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barata0/vue.global.js

Created November 11, 2019 01:53
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vue 3 global js vue next preview
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vue.global.js
var Vue = (function (exports) {
'use strict';
// Make a map and return a function for checking if a key
// is in that map.
//
// IMPORTANT: all calls of this function must be prefixed with /*#__PURE__*/
// So that rollup can tree-shake them if necessary.
function makeMap(str, expectsLowerCase) {
const map = Object.create(null);
const list = str.split(',');
for (let i = 0; i < list.length; i++) {
map[list[i]] = true;
}
return expectsLowerCase ? val => !!map[val.toLowerCase()] : val => !!map[val];
}
// Patch flags are optimization hints generated by the compiler.
// when a block with dynamicChildren is encountered during diff, the algorithm
// enters "optimized mode". In this mode, we know that the vdom is produced by
// a render function generated by the compiler, so the algorithm only needs to
// handle updates explicitly marked by these patch flags.
// runtime object for public consumption
const PublicPatchFlags = {
TEXT: 1 /* TEXT */,
CLASS: 2 /* CLASS */,
STYLE: 4 /* STYLE */,
PROPS: 8 /* PROPS */,
NEED_PATCH: 32 /* NEED_PATCH */,
FULL_PROPS: 16 /* FULL_PROPS */,
KEYED_FRAGMENT: 64 /* KEYED_FRAGMENT */,
UNKEYED_FRAGMENT: 128 /* UNKEYED_FRAGMENT */,
DYNAMIC_SLOTS: 256 /* DYNAMIC_SLOTS */,
BAIL: -1 /* BAIL */
};
// dev only flag -> name mapping
const PatchFlagNames = {
[1 /* TEXT */]: `TEXT`,
[2 /* CLASS */]: `CLASS`,
[4 /* STYLE */]: `STYLE`,
[8 /* PROPS */]: `PROPS`,
[32 /* NEED_PATCH */]: `NEED_PATCH`,
[16 /* FULL_PROPS */]: `FULL_PROPS`,
[64 /* KEYED_FRAGMENT */]: `KEYED_FRAGMENT`,
[128 /* UNKEYED_FRAGMENT */]: `UNKEYED_FRAGMENT`,
[256 /* DYNAMIC_SLOTS */]: `DYNAMIC_SLOTS`,
[-1 /* BAIL */]: `BAIL`
};
const GLOBALS_WHITE_LISTED = 'Infinity,undefined,NaN,isFinite,isNaN,parseFloat,parseInt,decodeURI,' +
'decodeURIComponent,encodeURI,encodeURIComponent,Math,Number,Date,Array,' +
'Object,Boolean,String,RegExp,Map,Set,JSON,Intl';
const isGloballyWhitelisted = /*#__PURE__*/ makeMap(GLOBALS_WHITE_LISTED);
const range = 2;
function generateCodeFrame(source, start = 0, end = source.length) {
const lines = source.split(/\r?\n/);
let count = 0;
const res = [];
for (let i = 0; i < lines.length; i++) {
count += lines[i].length + 1;
if (count >= start) {
for (let j = i - range; j <= i + range || end > count; j++) {
if (j < 0 || j >= lines.length)
continue;
res.push(`${j + 1}${' '.repeat(3 - String(j + 1).length)}| ${lines[j]}`);
const lineLength = lines[j].length;
if (j === i) {
// push underline
const pad = start - (count - lineLength) + 1;
const length = end > count ? lineLength - pad : end - start;
res.push(` | ` + ' '.repeat(pad) + '^'.repeat(length));
}
else if (j > i) {
if (end > count) {
const length = Math.min(end - count, lineLength);
res.push(` | ` + '^'.repeat(length));
}
count += lineLength + 1;
}
}
break;
}
}
return res.join('\n');
}
// These tag configs are shared between compiler-dom and runtime-dom, so they
// https://developer.mozilla.org/en-US/docs/Web/HTML/Element
const HTML_TAGS = 'html,body,base,head,link,meta,style,title,address,article,aside,footer,' +
'header,h1,h2,h3,h4,h5,h6,hgroup,nav,section,div,dd,dl,dt,figcaption,' +
'figure,picture,hr,img,li,main,ol,p,pre,ul,a,b,abbr,bdi,bdo,br,cite,code,' +
'data,dfn,em,i,kbd,mark,q,rp,rt,rtc,ruby,s,samp,small,span,strong,sub,sup,' +
'time,u,var,wbr,area,audio,map,track,video,embed,object,param,source,' +
'canvas,script,noscript,del,ins,caption,col,colgroup,table,thead,tbody,td,' +
'th,tr,button,datalist,fieldset,form,input,label,legend,meter,optgroup,' +
'option,output,progress,select,textarea,details,dialog,menu,menuitem,' +
'summary,content,element,shadow,template,blockquote,iframe,tfoot';
// https://developer.mozilla.org/en-US/docs/Web/SVG/Element
const SVG_TAGS = 'svg,animate,animateMotion,animateTransform,circle,clipPath,color-profile,' +
'defs,desc,discard,ellipse,feBlend,feColorMatrix,feComponentTransfer,' +
'feComposite,feConvolveMatrix,feDiffuseLighting,feDisplacementMap,' +
'feDistanceLight,feDropShadow,feFlood,feFuncA,feFuncB,feFuncG,feFuncR,' +
'feGaussianBlur,feImage,feMerge,feMergeNode,feMorphology,feOffset,' +
'fePointLight,feSpecularLighting,feSpotLight,feTile,feTurbulence,filter,' +
'foreignObject,g,hatch,hatchpath,image,line,lineGradient,marker,mask,' +
'mesh,meshgradient,meshpatch,meshrow,metadata,mpath,path,pattern,' +
'polygon,polyline,radialGradient,rect,set,solidcolor,stop,switch,symbol,' +
'text,textPath,title,tspan,unknown,use,view';
const VOID_TAGS = 'area,base,br,col,embed,hr,img,input,link,meta,param,source,track,wbr';
const isHTMLTag = /*#__PURE__*/ makeMap(HTML_TAGS);
const isSVGTag = /*#__PURE__*/ makeMap(SVG_TAGS);
const isVoidTag = /*#__PURE__*/ makeMap(VOID_TAGS);
const EMPTY_OBJ = Object.freeze({})
;
const EMPTY_ARR = [];
const NOOP = () => { };
/**
* Always return false.
*/
const NO = () => false;
const isOn = (key) => key[0] === 'o' && key[1] === 'n';
const extend = (a, b) => {
for (const key in b) {
a[key] = b[key];
}
return a;
};
const hasOwnProperty = Object.prototype.hasOwnProperty;
const hasOwn = (val, key) => hasOwnProperty.call(val, key);
const isArray = Array.isArray;
const isFunction = (val) => typeof val === 'function';
const isString = (val) => typeof val === 'string';
const isSymbol = (val) => typeof val === 'symbol';
const isObject = (val) => val !== null && typeof val === 'object';
function isPromise(val) {
return isObject(val) && isFunction(val.then) && isFunction(val.catch);
}
const objectToString = Object.prototype.toString;
const toTypeString = (value) => objectToString.call(value);
function toRawType(value) {
return toTypeString(value).slice(8, -1);
}
const isPlainObject = (val) => toTypeString(val) === '[object Object]';
const isReservedProp = /*#__PURE__*/ makeMap('key,ref,' +
'onVnodeBeforeMount,onVnodeMounted,' +
'onVnodeBeforeUpdate,onVnodeUpdated,' +
'onVnodeBeforeUnmount,onVnodeUnmounted');
const camelizeRE = /-(\w)/g;
const camelize = (str) => {
return str.replace(camelizeRE, (_, c) => (c ? c.toUpperCase() : ''));
};
const hyphenateRE = /\B([A-Z])/g;
const hyphenate = (str) => {
return str.replace(hyphenateRE, '-$1').toLowerCase();
};
const capitalize = (str) => {
return str.charAt(0).toUpperCase() + str.slice(1);
};
// compare whether a value has changed, accounting for NaN.
const hasChanged = (value, oldValue) => value !== oldValue && (value === value || oldValue === oldValue);
function defaultOnError(error) {
throw error;
}
function createCompilerError(code, loc, messages) {
const msg = (messages || errorMessages)[code] ;
const locInfo = loc ? ` (${loc.start.line}:${loc.start.column})` : ``;
const error = new SyntaxError(msg + locInfo);
error.code = code;
error.loc = loc;
return error;
}
const errorMessages = {
// parse errors
[0 /* ABRUPT_CLOSING_OF_EMPTY_COMMENT */]: 'Illegal comment.',
[1 /* ABSENCE_OF_DIGITS_IN_NUMERIC_CHARACTER_REFERENCE */]: 'Illegal numeric character reference: invalid character.',
[2 /* CDATA_IN_HTML_CONTENT */]: 'CDATA section is allowed only in XML context.',
[3 /* CHARACTER_REFERENCE_OUTSIDE_UNICODE_RANGE */]: 'Illegal numeric character reference: too big.',
[4 /* CONTROL_CHARACTER_REFERENCE */]: 'Illegal numeric character reference: control character.',
[5 /* DUPLICATE_ATTRIBUTE */]: 'Duplicate attribute.',
[6 /* END_TAG_WITH_ATTRIBUTES */]: 'End tag cannot have attributes.',
[7 /* END_TAG_WITH_TRAILING_SOLIDUS */]: "Illegal '/' in tags.",
[8 /* EOF_BEFORE_TAG_NAME */]: 'Unexpected EOF in tag.',
[9 /* EOF_IN_CDATA */]: 'Unexpected EOF in CDATA section.',
[10 /* EOF_IN_COMMENT */]: 'Unexpected EOF in comment.',
[11 /* EOF_IN_SCRIPT_HTML_COMMENT_LIKE_TEXT */]: 'Unexpected EOF in script.',
[12 /* EOF_IN_TAG */]: 'Unexpected EOF in tag.',
[13 /* INCORRECTLY_CLOSED_COMMENT */]: 'Incorrectly closed comment.',
[14 /* INCORRECTLY_OPENED_COMMENT */]: 'Incorrectly opened comment.',
[15 /* INVALID_FIRST_CHARACTER_OF_TAG_NAME */]: "Illegal tag name. Use '&lt;' to print '<'.",
[16 /* MISSING_ATTRIBUTE_VALUE */]: 'Attribute value was expected.',
[17 /* MISSING_END_TAG_NAME */]: 'End tag name was expected.',
[18 /* MISSING_SEMICOLON_AFTER_CHARACTER_REFERENCE */]: 'Semicolon was expected.',
[19 /* MISSING_WHITESPACE_BETWEEN_ATTRIBUTES */]: 'Whitespace was expected.',
[20 /* NESTED_COMMENT */]: "Unexpected '<!--' in comment.",
[21 /* NONCHARACTER_CHARACTER_REFERENCE */]: 'Illegal numeric character reference: non character.',
[22 /* NULL_CHARACTER_REFERENCE */]: 'Illegal numeric character reference: null character.',
[23 /* SURROGATE_CHARACTER_REFERENCE */]: 'Illegal numeric character reference: non-pair surrogate.',
[24 /* UNEXPECTED_CHARACTER_IN_ATTRIBUTE_NAME */]: 'Attribute name cannot contain U+0022 ("), U+0027 (\'), and U+003C (<).',
[25 /* UNEXPECTED_CHARACTER_IN_UNQUOTED_ATTRIBUTE_VALUE */]: 'Unquoted attribute value cannot contain U+0022 ("), U+0027 (\'), U+003C (<), U+003D (=), and U+0060 (`).',
[26 /* UNEXPECTED_EQUALS_SIGN_BEFORE_ATTRIBUTE_NAME */]: "Attribute name cannot start with '='.",
[28 /* UNEXPECTED_QUESTION_MARK_INSTEAD_OF_TAG_NAME */]: "'<?' is allowed only in XML context.",
[29 /* UNEXPECTED_SOLIDUS_IN_TAG */]: "Illegal '/' in tags.",
[30 /* UNKNOWN_NAMED_CHARACTER_REFERENCE */]: 'Unknown entity name.',
// Vue-specific parse errors
[31 /* X_INVALID_END_TAG */]: 'Invalid end tag.',
[32 /* X_MISSING_END_TAG */]: 'End tag was not found.',
[33 /* X_MISSING_INTERPOLATION_END */]: 'Interpolation end sign was not found.',
[34 /* X_MISSING_DYNAMIC_DIRECTIVE_ARGUMENT_END */]: 'End bracket for dynamic directive argument was not found. ' +
'Note that dynamic directive argument cannot contain spaces.',
// transform errors
[35 /* X_V_IF_NO_EXPRESSION */]: `v-if/v-else-if is missing expression.`,
[36 /* X_V_ELSE_NO_ADJACENT_IF */]: `v-else/v-else-if has no adjacent v-if.`,
[37 /* X_V_FOR_NO_EXPRESSION */]: `v-for is missing expression.`,
[38 /* X_V_FOR_MALFORMED_EXPRESSION */]: `v-for has invalid expression.`,
[39 /* X_V_BIND_NO_EXPRESSION */]: `v-bind is missing expression.`,
[40 /* X_V_ON_NO_EXPRESSION */]: `v-on is missing expression.`,
[41 /* X_V_SLOT_UNEXPECTED_DIRECTIVE_ON_SLOT_OUTLET */]: `Unexpected custom directive on <slot> outlet.`,
[42 /* X_V_SLOT_NAMED_SLOT_ON_COMPONENT */]: `Named v-slot on component. ` +
`Named slots should use <template v-slot> syntax nested inside the component.`,
[43 /* X_V_SLOT_MIXED_SLOT_USAGE */]: `Mixed v-slot usage on both the component and nested <template>.` +
`The default slot should also use <template> syntax when there are other ` +
`named slots to avoid scope ambiguity.`,
[44 /* X_V_SLOT_DUPLICATE_SLOT_NAMES */]: `Duplicate slot names found. `,
[45 /* X_V_SLOT_EXTRANEOUS_NON_SLOT_CHILDREN */]: `Extraneous children found when component has explicit slots. ` +
`These children will be ignored.`,
[46 /* X_V_SLOT_MISPLACED */]: `v-slot can only be used on components or <template> tags.`,
[47 /* X_V_MODEL_NO_EXPRESSION */]: `v-model is missing expression.`,
[48 /* X_V_MODEL_MALFORMED_EXPRESSION */]: `v-model value must be a valid JavaScript member expression.`,
[49 /* X_V_MODEL_ON_SCOPE_VARIABLE */]: `v-model cannot be used on v-for or v-slot scope variables because they are not writable.`,
[50 /* X_INVALID_EXPRESSION */]: `Invalid JavaScript expression.`,
// generic errors
[51 /* X_PREFIX_ID_NOT_SUPPORTED */]: `"prefixIdentifiers" option is not supported in this build of compiler.`,
[52 /* X_MODULE_MODE_NOT_SUPPORTED */]: `ES module mode is not supported in this build of compiler.`
};
// AST Utilities ---------------------------------------------------------------
// Some expressions, e.g. sequence and conditional expressions, are never
// associated with template nodes, so their source locations are just a stub.
// Container types like CompoundExpression also don't need a real location.
const locStub = {
source: '',
start: { line: 1, column: 1, offset: 0 },
end: { line: 1, column: 1, offset: 0 }
};
function createArrayExpression(elements, loc = locStub) {
return {
type: 16 /* JS_ARRAY_EXPRESSION */,
loc,
elements
};
}
function createObjectExpression(properties, loc = locStub) {
return {
type: 14 /* JS_OBJECT_EXPRESSION */,
loc,
properties
};
}
function createObjectProperty(key, value) {
return {
type: 15 /* JS_PROPERTY */,
loc: locStub,
key: isString(key) ? createSimpleExpression(key, true) : key,
value
};
}
function createSimpleExpression(content, isStatic, loc = locStub, isConstant = false) {
return {
type: 4 /* SIMPLE_EXPRESSION */,
loc,
isConstant,
content,
isStatic
};
}
function createCompoundExpression(children, loc = locStub) {
return {
type: 8 /* COMPOUND_EXPRESSION */,
loc,
children
};
}
function createCallExpression(callee, args = [], loc = locStub) {
return {
type: 13 /* JS_CALL_EXPRESSION */,
loc,
callee,
arguments: args
};
}
function createFunctionExpression(params, returns, newline = false, loc = locStub) {
return {
type: 17 /* JS_FUNCTION_EXPRESSION */,
params,
returns,
newline,
loc
};
}
function createSequenceExpression(expressions) {
return {
type: 18 /* JS_SEQUENCE_EXPRESSION */,
expressions,
loc: locStub
};
}
function createConditionalExpression(test, consequent, alternate) {
return {
type: 19 /* JS_CONDITIONAL_EXPRESSION */,
test,
consequent,
alternate,
loc: locStub
};
}
function createCacheExpression(index, value, isVNode = false) {
return {
type: 20 /* JS_CACHE_EXPRESSION */,
index,
value,
isVNode,
loc: locStub
};
}
const FRAGMENT = Symbol( `Fragment` );
const PORTAL = Symbol( `Portal` );
const SUSPENSE = Symbol( `Suspense` );
const KEEP_ALIVE = Symbol( `KeepAlive` );
const OPEN_BLOCK = Symbol( `openBlock` );
const CREATE_BLOCK = Symbol( `createBlock` );
const CREATE_VNODE = Symbol( `createVNode` );
const CREATE_COMMENT = Symbol( `createCommentVNode` );
const CREATE_TEXT = Symbol( `createTextVNode` );
const RESOLVE_COMPONENT = Symbol( `resolveComponent` );
const RESOLVE_DYNAMIC_COMPONENT = Symbol( `resolveDynamicComponent` );
const RESOLVE_DIRECTIVE = Symbol( `resolveDirective` );
const WITH_DIRECTIVES = Symbol( `withDirectives` );
const RENDER_LIST = Symbol( `renderList` );
const RENDER_SLOT = Symbol( `renderSlot` );
const CREATE_SLOTS = Symbol( `createSlots` );
const TO_STRING = Symbol( `toString` );
const MERGE_PROPS = Symbol( `mergeProps` );
const TO_HANDLERS = Symbol( `toHandlers` );
const CAMELIZE = Symbol( `camelize` );
const SET_BLOCK_TRACKING = Symbol( `setBlockTracking` );
// Name mapping for runtime helpers that need to be imported from 'vue' in
// generated code. Make sure these are correctly exported in the runtime!
// Using `any` here because TS doesn't allow symbols as index type.
const helperNameMap = {
[FRAGMENT]: `Fragment`,
[PORTAL]: `Portal`,
[SUSPENSE]: `Suspense`,
[KEEP_ALIVE]: `KeepAlive`,
[OPEN_BLOCK]: `openBlock`,
[CREATE_BLOCK]: `createBlock`,
[CREATE_VNODE]: `createVNode`,
[CREATE_COMMENT]: `createCommentVNode`,
[CREATE_TEXT]: `createTextVNode`,
[RESOLVE_COMPONENT]: `resolveComponent`,
[RESOLVE_DYNAMIC_COMPONENT]: `resolveDynamicComponent`,
[RESOLVE_DIRECTIVE]: `resolveDirective`,
[WITH_DIRECTIVES]: `withDirectives`,
[RENDER_LIST]: `renderList`,
[RENDER_SLOT]: `renderSlot`,
[CREATE_SLOTS]: `createSlots`,
[TO_STRING]: `toString`,
[MERGE_PROPS]: `mergeProps`,
[TO_HANDLERS]: `toHandlers`,
[CAMELIZE]: `camelize`,
[SET_BLOCK_TRACKING]: `setBlockTracking`
};
function registerRuntimeHelpers(helpers) {
Object.getOwnPropertySymbols(helpers).forEach(s => {
helperNameMap[s] = helpers[s];
});
}
const nonIdentifierRE = /^\d|[^\$\w]/;
const isSimpleIdentifier = (name) => !nonIdentifierRE.test(name);
const memberExpRE = /^[A-Za-z_$][\w$]*(?:\.[A-Za-z_$][\w$]*|\[[^\]]+\])*$/;
const isMemberExpression = (path) => memberExpRE.test(path);
function getInnerRange(loc, offset, length) {
assert(offset <= loc.source.length);
const source = loc.source.substr(offset, length);
const newLoc = {
source,
start: advancePositionWithClone(loc.start, loc.source, offset),
end: loc.end
};
if (length != null) {
assert(offset + length <= loc.source.length);
newLoc.end = advancePositionWithClone(loc.start, loc.source, offset + length);
}
return newLoc;
}
function advancePositionWithClone(pos, source, numberOfCharacters = source.length) {
return advancePositionWithMutation({ ...pos }, source, numberOfCharacters);
}
// advance by mutation without cloning (for performance reasons), since this
// gets called a lot in the parser
function advancePositionWithMutation(pos, source, numberOfCharacters = source.length) {
let linesCount = 0;
let lastNewLinePos = -1;
for (let i = 0; i < numberOfCharacters; i++) {
if (source.charCodeAt(i) === 10 /* newline char code */) {
linesCount++;
lastNewLinePos = i;
}
}
pos.offset += numberOfCharacters;
pos.line += linesCount;
pos.column =
lastNewLinePos === -1
? pos.column + numberOfCharacters
: Math.max(1, numberOfCharacters - lastNewLinePos);
return pos;
}
function assert(condition, msg) {
/* istanbul ignore if */
if (!condition) {
throw new Error(msg || `unexpected compiler condition`);
}
}
function findDir(node, name, allowEmpty = false) {
for (let i = 0; i < node.props.length; i++) {
const p = node.props[i];
if (p.type === 7 /* DIRECTIVE */ &&
(allowEmpty || p.exp) &&
(isString(name) ? p.name === name : name.test(p.name))) {
return p;
}
}
}
function findProp(node, name, dynamicOnly = false) {
for (let i = 0; i < node.props.length; i++) {
const p = node.props[i];
if (p.type === 6 /* ATTRIBUTE */) {
if (dynamicOnly)
continue;
if (p.name === name && p.value) {
return p;
}
}
else if (p.name === 'bind' &&
p.arg &&
p.arg.type === 4 /* SIMPLE_EXPRESSION */ &&
p.arg.isStatic &&
p.arg.content === name &&
p.exp) {
return p;
}
}
}
function createBlockExpression(blockExp, context) {
return createSequenceExpression([
createCallExpression(context.helper(OPEN_BLOCK)),
blockExp
]);
}
function isVSlot(p) {
return p.type === 7 /* DIRECTIVE */ && p.name === 'slot';
}
function isTemplateNode(node) {
return (node.type === 1 /* ELEMENT */ && node.tagType === 3 /* TEMPLATE */);
}
function isSlotOutlet(node) {
return node.type === 1 /* ELEMENT */ && node.tagType === 2 /* SLOT */;
}
function injectProp(node, prop, context) {
let propsWithInjection;
const props = node.callee === RENDER_SLOT ? node.arguments[2] : node.arguments[1];
if (props == null || isString(props)) {
propsWithInjection = createObjectExpression([prop]);
}
else if (props.type === 13 /* JS_CALL_EXPRESSION */) {
// merged props... add ours
// only inject key to object literal if it's the first argument so that
// if doesn't override user provided keys
const first = props.arguments[0];
if (!isString(first) && first.type === 14 /* JS_OBJECT_EXPRESSION */) {
first.properties.unshift(prop);
}
else {
props.arguments.unshift(createObjectExpression([prop]));
}
propsWithInjection = props;
}
else if (props.type === 14 /* JS_OBJECT_EXPRESSION */) {
props.properties.unshift(prop);
propsWithInjection = props;
}
else {
// single v-bind with expression, return a merged replacement
propsWithInjection = createCallExpression(context.helper(MERGE_PROPS), [
createObjectExpression([prop]),
props
]);
}
if (node.callee === RENDER_SLOT) {
node.arguments[2] = propsWithInjection;
}
else {
node.arguments[1] = propsWithInjection;
}
}
function toValidAssetId(name, type) {
return `_${type}_${name.replace(/[^\w]/g, '_')}`;
}
// Portal and Fragment are native types, not components
const isBuiltInComponent = /*#__PURE__*/ makeMap(`suspense,keep-alive,keepalive,transition`, true);
const defaultParserOptions = {
delimiters: [`{{`, `}}`],
getNamespace: () => 0 /* HTML */,
getTextMode: () => 0 /* DATA */,
isVoidTag: NO,
isPreTag: NO,
isCustomElement: NO,
namedCharacterReferences: {
'gt;': '>',
'lt;': '<',
'amp;': '&',
'apos;': "'",
'quot;': '"'
},
onError: defaultOnError
};
function parse(content, options = {}) {
const context = createParserContext(content, options);
const start = getCursor(context);
return {
type: 0 /* ROOT */,
children: parseChildren(context, 0 /* DATA */, []),
helpers: [],
components: [],
directives: [],
hoists: [],
cached: 0,
codegenNode: undefined,
loc: getSelection(context, start)
};
}
function createParserContext(content, options) {
return {
options: {
...defaultParserOptions,
...options
},
column: 1,
line: 1,
offset: 0,
originalSource: content,
source: content,
maxCRNameLength: Object.keys(options.namedCharacterReferences ||
defaultParserOptions.namedCharacterReferences).reduce((max, name) => Math.max(max, name.length), 0),
inPre: false
};
}
function parseChildren(context, mode, ancestors) {
const parent = last(ancestors);
const ns = parent ? parent.ns : 0 /* HTML */;
const nodes = [];
while (!isEnd(context, mode, ancestors)) {
assert(context.source.length > 0);
const s = context.source;
let node = undefined;
if (!context.inPre && startsWith(s, context.options.delimiters[0])) {
// '{{'
node = parseInterpolation(context, mode);
}
else if (mode === 0 /* DATA */ && s[0] === '<') {
// https://html.spec.whatwg.org/multipage/parsing.html#tag-open-state
if (s.length === 1) {
emitError(context, 8 /* EOF_BEFORE_TAG_NAME */, 1);
}
else if (s[1] === '!') {
// https://html.spec.whatwg.org/multipage/parsing.html#markup-declaration-open-state
if (startsWith(s, '<!--')) {
node = parseComment(context);
}
else if (startsWith(s, '<!DOCTYPE')) {
// Ignore DOCTYPE by a limitation.
node = parseBogusComment(context);
}
else if (startsWith(s, '<![CDATA[')) {
if (ns !== 0 /* HTML */) {
node = parseCDATA(context, ancestors);
}
else {
emitError(context, 2 /* CDATA_IN_HTML_CONTENT */);
node = parseBogusComment(context);
}
}
else {
emitError(context, 14 /* INCORRECTLY_OPENED_COMMENT */);
node = parseBogusComment(context);
}
}
else if (s[1] === '/') {
// https://html.spec.whatwg.org/multipage/parsing.html#end-tag-open-state
if (s.length === 2) {
emitError(context, 8 /* EOF_BEFORE_TAG_NAME */, 2);
}
else if (s[2] === '>') {
emitError(context, 17 /* MISSING_END_TAG_NAME */, 2);
advanceBy(context, 3);
continue;
}
else if (/[a-z]/i.test(s[2])) {
emitError(context, 31 /* X_INVALID_END_TAG */);
parseTag(context, 1 /* End */, parent);
continue;
}
else {
emitError(context, 15 /* INVALID_FIRST_CHARACTER_OF_TAG_NAME */, 2);
node = parseBogusComment(context);
}
}
else if (/[a-z]/i.test(s[1])) {
node = parseElement(context, ancestors);
}
else if (s[1] === '?') {
emitError(context, 28 /* UNEXPECTED_QUESTION_MARK_INSTEAD_OF_TAG_NAME */, 1);
node = parseBogusComment(context);
}
else {
emitError(context, 15 /* INVALID_FIRST_CHARACTER_OF_TAG_NAME */, 1);
}
}
if (!node) {
node = parseText(context, mode);
}
if (isArray(node)) {
for (let i = 0; i < node.length; i++) {
pushNode(nodes, node[i]);
}
}
else {
pushNode(nodes, node);
}
}
// Whitespace management for more efficient output
// (same as v2 whitespance: 'condense')
let removedWhitespace = false;
if (mode !== 2 /* RAWTEXT */ &&
(!parent || !context.options.isPreTag(parent.tag))) {
for (let i = 0; i < nodes.length; i++) {
const node = nodes[i];
if (node.type === 2 /* TEXT */) {
if (!node.content.trim()) {
const prev = nodes[i - 1];
const next = nodes[i + 1];
// If:
// - the whitespace is the first or last node, or:
// - the whitespace is adjacent to a comment, or:
// - the whitespace is between two elements AND contains newline
// Then the whitespace is ignored.
if (!prev ||
!next ||
prev.type === 3 /* COMMENT */ ||
next.type === 3 /* COMMENT */ ||
(prev.type === 1 /* ELEMENT */ &&
next.type === 1 /* ELEMENT */ &&
/[\r\n]/.test(node.content))) {
removedWhitespace = true;
nodes[i] = null;
}
else {
// Otherwise, condensed consecutive whitespace inside the text down to
// a single space
node.content = ' ';
}
}
else {
node.content = node.content.replace(/\s+/g, ' ');
}
}
}
}
return removedWhitespace ? nodes.filter(node => node !== null) : nodes;
}
function pushNode(nodes, node) {
if (node.type === 2 /* TEXT */) {
const prev = last(nodes);
// Merge if both this and the previous node are text and those are
// consecutive. This happens for cases like "a < b".
if (prev &&
prev.type === 2 /* TEXT */ &&
prev.loc.end.offset === node.loc.start.offset) {
prev.content += node.content;
prev.loc.end = node.loc.end;
prev.loc.source += node.loc.source;
return;
}
}
nodes.push(node);
}
function parseCDATA(context, ancestors) {
assert(last(ancestors) == null || last(ancestors).ns !== 0 /* HTML */);
assert(startsWith(context.source, '<![CDATA['));
advanceBy(context, 9);
const nodes = parseChildren(context, 3 /* CDATA */, ancestors);
if (context.source.length === 0) {
emitError(context, 9 /* EOF_IN_CDATA */);
}
else {
assert(startsWith(context.source, ']]>'));
advanceBy(context, 3);
}
return nodes;
}
function parseComment(context) {
assert(startsWith(context.source, '<!--'));
const start = getCursor(context);
let content;
// Regular comment.
const match = /--(\!)?>/.exec(context.source);
if (!match) {
content = context.source.slice(4);
advanceBy(context, context.source.length);
emitError(context, 10 /* EOF_IN_COMMENT */);
}
else {
if (match.index <= 3) {
emitError(context, 0 /* ABRUPT_CLOSING_OF_EMPTY_COMMENT */);
}
if (match[1]) {
emitError(context, 13 /* INCORRECTLY_CLOSED_COMMENT */);
}
content = context.source.slice(4, match.index);
// Advancing with reporting nested comments.
const s = context.source.slice(0, match.index);
let prevIndex = 1, nestedIndex = 0;
while ((nestedIndex = s.indexOf('<!--', prevIndex)) !== -1) {
advanceBy(context, nestedIndex - prevIndex + 1);
if (nestedIndex + 4 < s.length) {
emitError(context, 20 /* NESTED_COMMENT */);
}
prevIndex = nestedIndex + 1;
}
advanceBy(context, match.index + match[0].length - prevIndex + 1);
}
return {
type: 3 /* COMMENT */,
content,
loc: getSelection(context, start)
};
}
function parseBogusComment(context) {
assert(/^<(?:[\!\?]|\/[^a-z>])/i.test(context.source));
const start = getCursor(context);
const contentStart = context.source[1] === '?' ? 1 : 2;
let content;
const closeIndex = context.source.indexOf('>');
if (closeIndex === -1) {
content = context.source.slice(contentStart);
advanceBy(context, context.source.length);
}
else {
content = context.source.slice(contentStart, closeIndex);
advanceBy(context, closeIndex + 1);
}
return {
type: 3 /* COMMENT */,
content,
loc: getSelection(context, start)
};
}
function parseElement(context, ancestors) {
assert(/^<[a-z]/i.test(context.source));
// Start tag.
const wasInPre = context.inPre;
const parent = last(ancestors);
const element = parseTag(context, 0 /* Start */, parent);
const isPreBoundary = context.inPre && !wasInPre;
if (element.isSelfClosing || context.options.isVoidTag(element.tag)) {
return element;
}
// Children.
ancestors.push(element);
const mode = context.options.getTextMode(element.tag, element.ns);
const children = parseChildren(context, mode, ancestors);
ancestors.pop();
element.children = children;
// End tag.
if (startsWithEndTagOpen(context.source, element.tag)) {
parseTag(context, 1 /* End */, parent);
}
else {
emitError(context, 32 /* X_MISSING_END_TAG */);
if (context.source.length === 0 && element.tag.toLowerCase() === 'script') {
const first = children[0];
if (first && startsWith(first.loc.source, '<!--')) {
emitError(context, 11 /* EOF_IN_SCRIPT_HTML_COMMENT_LIKE_TEXT */);
}
}
}
element.loc = getSelection(context, element.loc.start);
if (isPreBoundary) {
context.inPre = false;
}
return element;
}
/**
* Parse a tag (E.g. `<div id=a>`) with that type (start tag or end tag).
*/
function parseTag(context, type, parent) {
assert(/^<\/?[a-z]/i.test(context.source));
assert(type === (startsWith(context.source, '</') ? 1 /* End */ : 0 /* Start */));
// Tag open.
const start = getCursor(context);
const match = /^<\/?([a-z][^\t\r\n\f />]*)/i.exec(context.source);
const tag = match[1];
const ns = context.options.getNamespace(tag, parent);
advanceBy(context, match[0].length);
advanceSpaces(context);
// save current state in case we need to re-parse attributes with v-pre
const cursor = getCursor(context);
const currentSource = context.source;
// Attributes.
let props = parseAttributes(context, type);
// check v-pre
if (!context.inPre &&
props.some(p => p.type === 7 /* DIRECTIVE */ && p.name === 'pre')) {
context.inPre = true;
// reset context
extend(context, cursor);
context.source = currentSource;
// re-parse attrs and filter out v-pre itself
props = parseAttributes(context, type).filter(p => p.name !== 'v-pre');
}
// Tag close.
let isSelfClosing = false;
if (context.source.length === 0) {
emitError(context, 12 /* EOF_IN_TAG */);
}
else {
isSelfClosing = startsWith(context.source, '/>');
if (type === 1 /* End */ && isSelfClosing) {
emitError(context, 7 /* END_TAG_WITH_TRAILING_SOLIDUS */);
}
advanceBy(context, isSelfClosing ? 2 : 1);
}
let tagType = 0 /* ELEMENT */;
if (!context.inPre && !context.options.isCustomElement(tag)) {
if (context.options.isNativeTag) {
if (!context.options.isNativeTag(tag))
tagType = 1 /* COMPONENT */;
}
else if (isBuiltInComponent(tag) || /^[A-Z]/.test(tag)) {
tagType = 1 /* COMPONENT */;
}
if (tag === 'slot') {
tagType = 2 /* SLOT */;
}
else if (tag === 'template') {
tagType = 3 /* TEMPLATE */;
}
}
return {
type: 1 /* ELEMENT */,
ns,
tag,
tagType,
props,
isSelfClosing,
children: [],
loc: getSelection(context, start),
codegenNode: undefined // to be created during transform phase
};
}
function parseAttributes(context, type) {
const props = [];
const attributeNames = new Set();
while (context.source.length > 0 &&
!startsWith(context.source, '>') &&
!startsWith(context.source, '/>')) {
if (startsWith(context.source, '/')) {
emitError(context, 29 /* UNEXPECTED_SOLIDUS_IN_TAG */);
advanceBy(context, 1);
advanceSpaces(context);
continue;
}
if (type === 1 /* End */) {
emitError(context, 6 /* END_TAG_WITH_ATTRIBUTES */);
}
const attr = parseAttribute(context, attributeNames);
if (type === 0 /* Start */) {
props.push(attr);
}
if (/^[^\t\r\n\f />]/.test(context.source)) {
emitError(context, 19 /* MISSING_WHITESPACE_BETWEEN_ATTRIBUTES */);
}
advanceSpaces(context);
}
return props;
}
function parseAttribute(context, nameSet) {
assert(/^[^\t\r\n\f />]/.test(context.source));
// Name.
const start = getCursor(context);
const match = /^[^\t\r\n\f />][^\t\r\n\f />=]*/.exec(context.source);
const name = match[0];
if (nameSet.has(name)) {
emitError(context, 5 /* DUPLICATE_ATTRIBUTE */);
}
nameSet.add(name);
if (name[0] === '=') {
emitError(context, 26 /* UNEXPECTED_EQUALS_SIGN_BEFORE_ATTRIBUTE_NAME */);
}
{
const pattern = /["'<]/g;
let m;
while ((m = pattern.exec(name)) !== null) {
emitError(context, 24 /* UNEXPECTED_CHARACTER_IN_ATTRIBUTE_NAME */, m.index);
}
}
advanceBy(context, name.length);
// Value
let value = undefined;
if (/^[\t\r\n\f ]*=/.test(context.source)) {
advanceSpaces(context);
advanceBy(context, 1);
advanceSpaces(context);
value = parseAttributeValue(context);
if (!value) {
emitError(context, 16 /* MISSING_ATTRIBUTE_VALUE */);
}
}
const loc = getSelection(context, start);
if (!context.inPre && /^(v-|:|@|#)/.test(name)) {
const match = /(?:^v-([a-z0-9-]+))?(?:(?::|^@|^#)([^\.]+))?(.+)?$/i.exec(name);
let arg;
if (match[2]) {
const startOffset = name.split(match[2], 2).shift().length;
const loc = getSelection(context, getNewPosition(context, start, startOffset), getNewPosition(context, start, startOffset + match[2].length));
let content = match[2];
let isStatic = true;
if (content.startsWith('[')) {
isStatic = false;
if (!content.endsWith(']')) {
emitError(context, 34 /* X_MISSING_DYNAMIC_DIRECTIVE_ARGUMENT_END */);
}
content = content.substr(1, content.length - 2);
}
arg = {
type: 4 /* SIMPLE_EXPRESSION */,
content,
isStatic,
isConstant: isStatic,
loc
};
}
if (value && value.isQuoted) {
const valueLoc = value.loc;
valueLoc.start.offset++;
valueLoc.start.column++;
valueLoc.end = advancePositionWithClone(valueLoc.start, value.content);
valueLoc.source = valueLoc.source.slice(1, -1);
}
return {
type: 7 /* DIRECTIVE */,
name: match[1] ||
(startsWith(name, ':')
? 'bind'
: startsWith(name, '@')
? 'on'
: 'slot'),
exp: value && {
type: 4 /* SIMPLE_EXPRESSION */,
content: value.content,
isStatic: false,
// Treat as non-constant by default. This can be potentially set to
// true by `transformExpression` to make it eligible for hoisting.
isConstant: false,
loc: value.loc
},
arg,
modifiers: match[3] ? match[3].substr(1).split('.') : [],
loc
};
}
return {
type: 6 /* ATTRIBUTE */,
name,
value: value && {
type: 2 /* TEXT */,
content: value.content,
loc: value.loc
},
loc
};
}
function parseAttributeValue(context) {
const start = getCursor(context);
let content;
const quote = context.source[0];
const isQuoted = quote === `"` || quote === `'`;
if (isQuoted) {
// Quoted value.
advanceBy(context, 1);
const endIndex = context.source.indexOf(quote);
if (endIndex === -1) {
content = parseTextData(context, context.source.length, 4 /* ATTRIBUTE_VALUE */);
}
else {
content = parseTextData(context, endIndex, 4 /* ATTRIBUTE_VALUE */);
advanceBy(context, 1);
}
}
else {
// Unquoted
const match = /^[^\t\r\n\f >]+/.exec(context.source);
if (!match) {
return undefined;
}
let unexpectedChars = /["'<=`]/g;
let m;
while ((m = unexpectedChars.exec(match[0])) !== null) {
emitError(context, 25 /* UNEXPECTED_CHARACTER_IN_UNQUOTED_ATTRIBUTE_VALUE */, m.index);
}
content = parseTextData(context, match[0].length, 4 /* ATTRIBUTE_VALUE */);
}
return { content, isQuoted, loc: getSelection(context, start) };
}
function parseInterpolation(context, mode) {
const [open, close] = context.options.delimiters;
assert(startsWith(context.source, open));
const closeIndex = context.source.indexOf(close, open.length);
if (closeIndex === -1) {
emitError(context, 33 /* X_MISSING_INTERPOLATION_END */);
return undefined;
}
const start = getCursor(context);
advanceBy(context, open.length);
const innerStart = getCursor(context);
const innerEnd = getCursor(context);
const rawContentLength = closeIndex - open.length;
const rawContent = context.source.slice(0, rawContentLength);
const preTrimContent = parseTextData(context, rawContentLength, mode);
const content = preTrimContent.trim();
const startOffset = preTrimContent.indexOf(content);
if (startOffset > 0) {
advancePositionWithMutation(innerStart, rawContent, startOffset);
}
const endOffset = rawContentLength - (preTrimContent.length - content.length - startOffset);
advancePositionWithMutation(innerEnd, rawContent, endOffset);
advanceBy(context, close.length);
return {
type: 5 /* INTERPOLATION */,
content: {
type: 4 /* SIMPLE_EXPRESSION */,
isStatic: false,
// Set `isConstant` to false by default and will decide in transformExpression
isConstant: false,
content,
loc: getSelection(context, innerStart, innerEnd)
},
loc: getSelection(context, start)
};
}
function parseText(context, mode) {
assert(context.source.length > 0);
const [open] = context.options.delimiters;
// TODO could probably use some perf optimization
const endIndex = Math.min(...[
context.source.indexOf('<', 1),
context.source.indexOf(open, 1),
mode === 3 /* CDATA */ ? context.source.indexOf(']]>') : -1,
context.source.length
].filter(n => n !== -1));
assert(endIndex > 0);
const start = getCursor(context);
const content = parseTextData(context, endIndex, mode);
return {
type: 2 /* TEXT */,
content,
loc: getSelection(context, start)
};
}
/**
* Get text data with a given length from the current location.
* This translates HTML entities in the text data.
*/
function parseTextData(context, length, mode) {
if (mode === 2 /* RAWTEXT */ || mode === 3 /* CDATA */) {
const text = context.source.slice(0, length);
advanceBy(context, length);
return text;
}
// DATA or RCDATA. Entity decoding required.
const end = context.offset + length;
let text = '';
while (context.offset < end) {
const head = /&(?:#x?)?/i.exec(context.source);
if (!head || context.offset + head.index >= end) {
const remaining = end - context.offset;
text += context.source.slice(0, remaining);
advanceBy(context, remaining);
break;
}
// Advance to the "&".
text += context.source.slice(0, head.index);
advanceBy(context, head.index);
if (head[0] === '&') {
// Named character reference.
let name = '', value = undefined;
if (/[0-9a-z]/i.test(context.source[1])) {
for (let length = context.maxCRNameLength; !value && length > 0; --length) {
name = context.source.substr(1, length);
value = context.options.namedCharacterReferences[name];
}
if (value) {
const semi = name.endsWith(';');
if (mode === 4 /* ATTRIBUTE_VALUE */ &&
!semi &&
/[=a-z0-9]/i.test(context.source[1 + name.length] || '')) {
text += '&';
text += name;
advanceBy(context, 1 + name.length);
}
else {
text += value;
advanceBy(context, 1 + name.length);
if (!semi) {
emitError(context, 18 /* MISSING_SEMICOLON_AFTER_CHARACTER_REFERENCE */);
}
}
}
else {
emitError(context, 30 /* UNKNOWN_NAMED_CHARACTER_REFERENCE */);
text += '&';
text += name;
advanceBy(context, 1 + name.length);
}
}
else {
text += '&';
advanceBy(context, 1);
}
}
else {
// Numeric character reference.
const hex = head[0] === '&#x';
const pattern = hex ? /^&#x([0-9a-f]+);?/i : /^&#([0-9]+);?/;
const body = pattern.exec(context.source);
if (!body) {
text += head[0];
emitError(context, 1 /* ABSENCE_OF_DIGITS_IN_NUMERIC_CHARACTER_REFERENCE */);
advanceBy(context, head[0].length);
}
else {
// https://html.spec.whatwg.org/multipage/parsing.html#numeric-character-reference-end-state
let cp = Number.parseInt(body[1], hex ? 16 : 10);
if (cp === 0) {
emitError(context, 22 /* NULL_CHARACTER_REFERENCE */);
cp = 0xfffd;
}
else if (cp > 0x10ffff) {
emitError(context, 3 /* CHARACTER_REFERENCE_OUTSIDE_UNICODE_RANGE */);
cp = 0xfffd;
}
else if (cp >= 0xd800 && cp <= 0xdfff) {
emitError(context, 23 /* SURROGATE_CHARACTER_REFERENCE */);
cp = 0xfffd;
}
else if ((cp >= 0xfdd0 && cp <= 0xfdef) || (cp & 0xfffe) === 0xfffe) {
emitError(context, 21 /* NONCHARACTER_CHARACTER_REFERENCE */);
}
else if ((cp >= 0x01 && cp <= 0x08) ||
cp === 0x0b ||
(cp >= 0x0d && cp <= 0x1f) ||
(cp >= 0x7f && cp <= 0x9f)) {
emitError(context, 4 /* CONTROL_CHARACTER_REFERENCE */);
cp = CCR_REPLACEMENTS[cp] || cp;
}
text += String.fromCodePoint(cp);
advanceBy(context, body[0].length);
if (!body[0].endsWith(';')) {
emitError(context, 18 /* MISSING_SEMICOLON_AFTER_CHARACTER_REFERENCE */);
}
}
}
}
return text;
}
function getCursor(context) {
const { column, line, offset } = context;
return { column, line, offset };
}
function getSelection(context, start, end) {
end = end || getCursor(context);
return {
start,
end,
source: context.originalSource.slice(start.offset, end.offset)
};
}
function last(xs) {
return xs[xs.length - 1];
}
function startsWith(source, searchString) {
return source.startsWith(searchString);
}
function advanceBy(context, numberOfCharacters) {
const { source } = context;
assert(numberOfCharacters <= source.length);
advancePositionWithMutation(context, source, numberOfCharacters);
context.source = source.slice(numberOfCharacters);
}
function advanceSpaces(context) {
const match = /^[\t\r\n\f ]+/.exec(context.source);
if (match) {
advanceBy(context, match[0].length);
}
}
function getNewPosition(context, start, numberOfCharacters) {
return advancePositionWithClone(start, context.originalSource.slice(start.offset, numberOfCharacters), numberOfCharacters);
}
function emitError(context, code, offset) {
const loc = getCursor(context);
if (offset) {
loc.offset += offset;
loc.column += offset;
}
context.options.onError(createCompilerError(code, {
start: loc,
end: loc,
source: ''
}));
}
function isEnd(context, mode, ancestors) {
const s = context.source;
switch (mode) {
case 0 /* DATA */:
if (startsWith(s, '</')) {
//TODO: probably bad performance
for (let i = ancestors.length - 1; i >= 0; --i) {
if (startsWithEndTagOpen(s, ancestors[i].tag)) {
return true;
}
}
}
break;
case 1 /* RCDATA */:
case 2 /* RAWTEXT */: {
const parent = last(ancestors);
if (parent && startsWithEndTagOpen(s, parent.tag)) {
return true;
}
break;
}
case 3 /* CDATA */:
if (startsWith(s, ']]>')) {
return true;
}
break;
}
return !s;
}
function startsWithEndTagOpen(source, tag) {
return (startsWith(source, '</') &&
source.substr(2, tag.length).toLowerCase() === tag.toLowerCase() &&
/[\t\n\f />]/.test(source[2 + tag.length] || '>'));
}
// https://html.spec.whatwg.org/multipage/parsing.html#numeric-character-reference-end-state
const CCR_REPLACEMENTS = {
0x80: 0x20ac,
0x82: 0x201a,
0x83: 0x0192,
0x84: 0x201e,
0x85: 0x2026,
0x86: 0x2020,
0x87: 0x2021,
0x88: 0x02c6,
0x89: 0x2030,
0x8a: 0x0160,
0x8b: 0x2039,
0x8c: 0x0152,
0x8e: 0x017d,
0x91: 0x2018,
0x92: 0x2019,
0x93: 0x201c,
0x94: 0x201d,
0x95: 0x2022,
0x96: 0x2013,
0x97: 0x2014,
0x98: 0x02dc,
0x99: 0x2122,
0x9a: 0x0161,
0x9b: 0x203a,
0x9c: 0x0153,
0x9e: 0x017e,
0x9f: 0x0178
};
function hoistStatic(root, context) {
walk(root.children, context, new Map(), isSingleElementRoot(root, root.children[0]));
}
function isSingleElementRoot(root, child) {
const { children } = root;
return (children.length === 1 &&
child.type === 1 /* ELEMENT */ &&
!isSlotOutlet(child));
}
function walk(children, context, resultCache, doNotHoistNode = false) {
for (let i = 0; i < children.length; i++) {
const child = children[i];
// only plain elements are eligible for hoisting.
if (child.type === 1 /* ELEMENT */ &&
child.tagType === 0 /* ELEMENT */) {
if (!doNotHoistNode && isStaticNode(child, resultCache)) {
// whole tree is static
child.codegenNode = context.hoist(child.codegenNode);
continue;
}
else {
// node may contain dynamic children, but its props may be eligible for
// hoisting.
const codegenNode = child.codegenNode;
if (codegenNode.type === 13 /* JS_CALL_EXPRESSION */) {
const flag = getPatchFlag(codegenNode);
if ((!flag ||
flag === 32 /* NEED_PATCH */ ||
flag === 1 /* TEXT */) &&
!hasDynamicKeyOrRef(child) &&
!hasCachedProps()) {
const props = getNodeProps(child);
if (props && props !== `null`) {
getVNodeCall(codegenNode).arguments[1] = context.hoist(props);
}
}
}
}
}
if (child.type === 1 /* ELEMENT */) {
walk(child.children, context, resultCache);
}
else if (child.type === 11 /* FOR */) {
// Do not hoist v-for single child because it has to be a block
walk(child.children, context, resultCache, child.children.length === 1);
}
else if (child.type === 9 /* IF */) {
for (let i = 0; i < child.branches.length; i++) {
const branchChildren = child.branches[i].children;
// Do not hoist v-if single child because it has to be a block
walk(branchChildren, context, resultCache, branchChildren.length === 1);
}
}
}
}
function isStaticNode(node, resultCache = new Map()) {
switch (node.type) {
case 1 /* ELEMENT */:
if (node.tagType !== 0 /* ELEMENT */) {
return false;
}
const cached = resultCache.get(node);
if (cached !== undefined) {
return cached;
}
const codegenNode = node.codegenNode;
if (codegenNode.type !== 13 /* JS_CALL_EXPRESSION */) {
return false;
}
const flag = getPatchFlag(codegenNode);
if (!flag && !hasDynamicKeyOrRef(node) && !hasCachedProps()) {
// element self is static. check its children.
for (let i = 0; i < node.children.length; i++) {
if (!isStaticNode(node.children[i], resultCache)) {
resultCache.set(node, false);
return false;
}
}
resultCache.set(node, true);
return true;
}
else {
resultCache.set(node, false);
return false;
}
case 2 /* TEXT */:
case 3 /* COMMENT */:
return true;
case 9 /* IF */:
case 11 /* FOR */:
return false;
case 5 /* INTERPOLATION */:
case 12 /* TEXT_CALL */:
return isStaticNode(node.content, resultCache);
case 4 /* SIMPLE_EXPRESSION */:
return node.isConstant;
case 8 /* COMPOUND_EXPRESSION */:
return node.children.every(child => {
return (isString(child) || isSymbol(child) || isStaticNode(child, resultCache));
});
default:
return false;
}
}
function hasDynamicKeyOrRef(node) {
return !!(findProp(node, 'key', true) || findProp(node, 'ref', true));
}
function hasCachedProps(node) {
{
return false;
}
}
function getNodeProps(node) {
const codegenNode = node.codegenNode;
if (codegenNode.type === 13 /* JS_CALL_EXPRESSION */) {
return getVNodeArgAt(codegenNode, 1);
}
}
function getVNodeArgAt(node, index) {
return getVNodeCall(node).arguments[index];
}
function getVNodeCall(node) {
return node.callee === WITH_DIRECTIVES ? node.arguments[0] : node;
}
function getPatchFlag(node) {
const flag = getVNodeArgAt(node, 3);
return flag ? parseInt(flag, 10) : undefined;
}
function createTransformContext(root, { prefixIdentifiers = false, hoistStatic = false, cacheHandlers = false, nodeTransforms = [], directiveTransforms = {}, onError = defaultOnError }) {
const context = {
root,
helpers: new Set(),
components: new Set(),
directives: new Set(),
hoists: [],
cached: 0,
identifiers: {},
scopes: {
vFor: 0,
vSlot: 0,
vPre: 0,
vOnce: 0
},
prefixIdentifiers,
hoistStatic,
cacheHandlers,
nodeTransforms,
directiveTransforms,
onError,
parent: null,
currentNode: root,
childIndex: 0,
helper(name) {
context.helpers.add(name);
return name;
},
helperString(name) {
return ((context.prefixIdentifiers ? `` : `_`) +
helperNameMap[context.helper(name)]);
},
replaceNode(node) {
/* istanbul ignore if */
{
if (!context.currentNode) {
throw new Error(`Node being replaced is already removed.`);
}
if (!context.parent) {
throw new Error(`Cannot replace root node.`);
}
}
context.parent.children[context.childIndex] = context.currentNode = node;
},
removeNode(node) {
if ( !context.parent) {
throw new Error(`Cannot remove root node.`);
}
const list = context.parent.children;
const removalIndex = node
? list.indexOf(node)
: context.currentNode
? context.childIndex
: -1;
/* istanbul ignore if */
if ( removalIndex < 0) {
throw new Error(`node being removed is not a child of current parent`);
}
if (!node || node === context.currentNode) {
// current node removed
context.currentNode = null;
context.onNodeRemoved();
}
else {
// sibling node removed
if (context.childIndex > removalIndex) {
context.childIndex--;
context.onNodeRemoved();
}
}
context.parent.children.splice(removalIndex, 1);
},
onNodeRemoved: () => { },
addIdentifiers(exp) {
},
removeIdentifiers(exp) {
},
hoist(exp) {
context.hoists.push(exp);
return createSimpleExpression(`_hoisted_${context.hoists.length}`, false, exp.loc, true);
},
cache(exp, isVNode = false) {
return createCacheExpression(++context.cached, exp, isVNode);
}
};
return context;
}
function transform(root, options) {
const context = createTransformContext(root, options);
traverseNode(root, context);
if (options.hoistStatic) {
hoistStatic(root, context);
}
finalizeRoot(root, context);
}
function finalizeRoot(root, context) {
const { helper } = context;
const { children } = root;
const child = children[0];
if (children.length === 1) {
// if the single child is an element, turn it into a block.
if (isSingleElementRoot(root, child) && child.codegenNode) {
// single element root is never hoisted so codegenNode will never be
// SimpleExpressionNode
const codegenNode = child.codegenNode;
if (codegenNode.type !== 20 /* JS_CACHE_EXPRESSION */) {
if (codegenNode.callee === WITH_DIRECTIVES) {
codegenNode.arguments[0].callee = helper(CREATE_BLOCK);
}
else {
codegenNode.callee = helper(CREATE_BLOCK);
}
root.codegenNode = createBlockExpression(codegenNode, context);
}
else {
root.codegenNode = codegenNode;
}
}
else {
// - single <slot/>, IfNode, ForNode: already blocks.
// - single text node: always patched.
// root codegen falls through via genNode()
root.codegenNode = child;
}
}
else if (children.length > 1) {
// root has multiple nodes - return a fragment block.
root.codegenNode = createBlockExpression(createCallExpression(helper(CREATE_BLOCK), [
helper(FRAGMENT),
`null`,
root.children
]), context);
}
// finalize meta information
root.helpers = [...context.helpers];
root.components = [...context.components];
root.directives = [...context.directives];
root.hoists = context.hoists;
root.cached = context.cached;
}
function traverseChildren(parent, context) {
let i = 0;
const nodeRemoved = () => {
i--;
};
for (; i < parent.children.length; i++) {
const child = parent.children[i];
if (isString(child))
continue;
context.currentNode = child;
context.parent = parent;
context.childIndex = i;
context.onNodeRemoved = nodeRemoved;
traverseNode(child, context);
}
}
function traverseNode(node, context) {
// apply transform plugins
const { nodeTransforms } = context;
const exitFns = [];
for (let i = 0; i < nodeTransforms.length; i++) {
const onExit = nodeTransforms[i](node, context);
if (onExit) {
if (isArray(onExit)) {
exitFns.push(...onExit);
}
else {
exitFns.push(onExit);
}
}
if (!context.currentNode) {
// node was removed
return;
}
else {
// node may have been replaced
node = context.currentNode;
}
}
switch (node.type) {
case 3 /* COMMENT */:
// inject import for the Comment symbol, which is needed for creating
// comment nodes with `createVNode`
context.helper(CREATE_COMMENT);
break;
case 5 /* INTERPOLATION */:
// no need to traverse, but we need to inject toString helper
context.helper(TO_STRING);
break;
// for container types, further traverse downwards
case 9 /* IF */:
for (let i = 0; i < node.branches.length; i++) {
traverseChildren(node.branches[i], context);
}
break;
case 11 /* FOR */:
case 1 /* ELEMENT */:
case 0 /* ROOT */:
traverseChildren(node, context);
break;
}
// exit transforms
let i = exitFns.length;
while (i--) {
exitFns[i]();
}
}
function createStructuralDirectiveTransform(name, fn) {
const matches = isString(name)
? (n) => n === name
: (n) => name.test(n);
return (node, context) => {
if (node.type === 1 /* ELEMENT */) {
const { props } = node;
// structural directive transforms are not concerned with slots
// as they are handled separately in vSlot.ts
if (node.tagType === 3 /* TEMPLATE */ && props.some(isVSlot)) {
return;
}
const exitFns = [];
for (let i = 0; i < props.length; i++) {
const prop = props[i];
if (prop.type === 7 /* DIRECTIVE */ && matches(prop.name)) {
// structural directives are removed to avoid infinite recursion
// also we remove them *before* applying so that it can further
// traverse itself in case it moves the node around
props.splice(i, 1);
i--;
const onExit = fn(node, prop, context);
if (onExit)
exitFns.push(onExit);
}
}
return exitFns;
}
};
}
function createCodegenContext(ast, { mode = 'function', prefixIdentifiers = mode === 'module', sourceMap = false, filename = `template.vue.html` }) {
const context = {
mode,
prefixIdentifiers,
sourceMap,
filename,
source: ast.loc.source,
code: ``,
column: 1,
line: 1,
offset: 0,
indentLevel: 0,
// lazy require source-map implementation, only in non-browser builds!
map: undefined
,
helper(key) {
const name = helperNameMap[key];
return prefixIdentifiers ? name : `_${name}`;
},
push(code, node, openOnly) {
context.code += code;
},
resetMapping(loc) {
},
indent() {
newline(++context.indentLevel);
},
deindent(withoutNewLine = false) {
if (withoutNewLine) {
--context.indentLevel;
}
else {
newline(--context.indentLevel);
}
},
newline() {
newline(context.indentLevel);
}
};
function newline(n) {
context.push('\n' + ` `.repeat(n));
}
return context;
}
function generate(ast, options = {}) {
const context = createCodegenContext(ast, options);
const { mode, push, helper, prefixIdentifiers, indent, deindent, newline } = context;
const hasHelpers = ast.helpers.length > 0;
const useWithBlock = !prefixIdentifiers && mode !== 'module';
// preambles
if (mode === 'function') {
// Generate const declaration for helpers
// In prefix mode, we place the const declaration at top so it's done
// only once; But if we not prefixing, we place the declaration inside the
// with block so it doesn't incur the `in` check cost for every helper access.
if (hasHelpers) {
if (prefixIdentifiers) {
push(`const { ${ast.helpers.map(helper).join(', ')} } = Vue\n`);
}
else {
// "with" mode.
// save Vue in a separate variable to avoid collision
push(`const _Vue = Vue\n`);
// in "with" mode, helpers are declared inside the with block to avoid
// has check cost, but hoists are lifted out of the function - we need
// to provide the helper here.
if (ast.hoists.length) {
push(`const _${helperNameMap[CREATE_VNODE]} = Vue.${helperNameMap[CREATE_VNODE]}\n`);
if (ast.helpers.includes(CREATE_COMMENT)) {
push(`const _${helperNameMap[CREATE_COMMENT]} = Vue.${helperNameMap[CREATE_COMMENT]}\n`);
}
}
}
}
genHoists(ast.hoists, context);
newline();
push(`return `);
}
else {
// generate import statements for helpers
if (hasHelpers) {
push(`import { ${ast.helpers.map(helper).join(', ')} } from "vue"\n`);
}
genHoists(ast.hoists, context);
newline();
push(`export default `);
}
// enter render function
push(`function render() {`);
indent();
if (useWithBlock) {
push(`with (this) {`);
indent();
// function mode const declarations should be inside with block
// also they should be renamed to avoid collision with user properties
if (hasHelpers) {
push(`const { ${ast.helpers
.map(s => `${helperNameMap[s]}: _${helperNameMap[s]}`)
.join(', ')} } = _Vue`);
newline();
if (ast.cached > 0) {
push(`const _cache = $cache`);
newline();
}
newline();
}
}
else {
push(`const _ctx = this`);
if (ast.cached > 0) {
newline();
push(`const _cache = _ctx.$cache`);
}
newline();
}
// generate asset resolution statements
if (ast.components.length) {
genAssets(ast.components, 'component', context);
}
if (ast.directives.length) {
genAssets(ast.directives, 'directive', context);
}
if (ast.components.length || ast.directives.length) {
newline();
}
// generate the VNode tree expression
push(`return `);
if (ast.codegenNode) {
genNode(ast.codegenNode, context);
}
else {
push(`null`);
}
if (useWithBlock) {
deindent();
push(`}`);
}
deindent();
push(`}`);
return {
ast,
code: context.code,
map: context.map ? context.map.toJSON() : undefined
};
}
function genAssets(assets, type, context) {
const resolver = context.helper(type === 'component' ? RESOLVE_COMPONENT : RESOLVE_DIRECTIVE);
for (let i = 0; i < assets.length; i++) {
const id = assets[i];
context.push(`const ${toValidAssetId(id, type)} = ${resolver}(${JSON.stringify(id)})`);
context.newline();
}
}
function genHoists(hoists, context) {
if (!hoists.length) {
return;
}
context.newline();
hoists.forEach((exp, i) => {
context.push(`const _hoisted_${i + 1} = `);
genNode(exp, context);
context.newline();
});
}
function isText(n) {
return (isString(n) ||
n.type === 4 /* SIMPLE_EXPRESSION */ ||
n.type === 2 /* TEXT */ ||
n.type === 5 /* INTERPOLATION */ ||
n.type === 8 /* COMPOUND_EXPRESSION */);
}
function genNodeListAsArray(nodes, context) {
const multilines = nodes.length > 3 ||
( nodes.some(n => isArray(n) || !isText(n)));
context.push(`[`);
multilines && context.indent();
genNodeList(nodes, context, multilines);
multilines && context.deindent();
context.push(`]`);
}
function genNodeList(nodes, context, multilines = false) {
const { push, newline } = context;
for (let i = 0; i < nodes.length; i++) {
const node = nodes[i];
if (isString(node)) {
push(node);
}
else if (isArray(node)) {
genNodeListAsArray(node, context);
}
else {
genNode(node, context);
}
if (i < nodes.length - 1) {
if (multilines) {
push(',');
newline();
}
else {
push(', ');
}
}
}
}
function genNode(node, context) {
if (isString(node)) {
context.push(node);
return;
}
if (isSymbol(node)) {
context.push(context.helper(node));
return;
}
switch (node.type) {
case 1 /* ELEMENT */:
case 9 /* IF */:
case 11 /* FOR */:
assert(node.codegenNode != null, `Codegen node is missing for element/if/for node. ` +
`Apply appropriate transforms first.`);
genNode(node.codegenNode, context);
break;
case 2 /* TEXT */:
genText(node, context);
break;
case 4 /* SIMPLE_EXPRESSION */:
genExpression(node, context);
break;
case 5 /* INTERPOLATION */:
genInterpolation(node, context);
break;
case 12 /* TEXT_CALL */:
genNode(node.codegenNode, context);
break;
case 8 /* COMPOUND_EXPRESSION */:
genCompoundExpression(node, context);
break;
case 3 /* COMMENT */:
genComment(node, context);
break;
case 13 /* JS_CALL_EXPRESSION */:
genCallExpression(node, context);
break;
case 14 /* JS_OBJECT_EXPRESSION */:
genObjectExpression(node, context);
break;
case 16 /* JS_ARRAY_EXPRESSION */:
genArrayExpression(node, context);
break;
case 17 /* JS_FUNCTION_EXPRESSION */:
genFunctionExpression(node, context);
break;
case 18 /* JS_SEQUENCE_EXPRESSION */:
genSequenceExpression(node, context);
break;
case 19 /* JS_CONDITIONAL_EXPRESSION */:
genConditionalExpression(node, context);
break;
case 20 /* JS_CACHE_EXPRESSION */:
genCacheExpression(node, context);
break;
/* istanbul ignore next */
default:
{
assert(false, `unhandled codegen node type: ${node.type}`);
// make sure we exhaust all possible types
const exhaustiveCheck = node;
return exhaustiveCheck;
}
}
}
function genText(node, context) {
context.push(JSON.stringify(node.content), node);
}
function genExpression(node, context) {
const { content, isStatic } = node;
context.push(isStatic ? JSON.stringify(content) : content, node);
}
function genInterpolation(node, context) {
const { push, helper } = context;
push(`${helper(TO_STRING)}(`);
genNode(node.content, context);
push(`)`);
}
function genCompoundExpression(node, context) {
for (let i = 0; i < node.children.length; i++) {
const child = node.children[i];
if (isString(child)) {
context.push(child);
}
else {
genNode(child, context);
}
}
}
function genExpressionAsPropertyKey(node, context) {
const { push } = context;
if (node.type === 8 /* COMPOUND_EXPRESSION */) {
push(`[`);
genCompoundExpression(node, context);
push(`]`);
}
else if (node.isStatic) {
// only quote keys if necessary
const text = isSimpleIdentifier(node.content)
? node.content
: JSON.stringify(node.content);
push(text, node);
}
else {
push(`[${node.content}]`, node);
}
}
function genComment(node, context) {
{
const { push, helper } = context;
push(`${helper(CREATE_COMMENT)}(${JSON.stringify(node.content)})`, node);
}
}
// JavaScript
function genCallExpression(node, context) {
const callee = isString(node.callee)
? node.callee
: context.helper(node.callee);
context.push(callee + `(`, node, true);
genNodeList(node.arguments, context);
context.push(`)`);
}
function genObjectExpression(node, context) {
const { push, indent, deindent, newline, resetMapping } = context;
const { properties } = node;
if (!properties.length) {
push(`{}`, node);
return;
}
const multilines = properties.length > 1 ||
(
properties.some(p => p.value.type !== 4 /* SIMPLE_EXPRESSION */));
push(multilines ? `{` : `{ `);
multilines && indent();
for (let i = 0; i < properties.length; i++) {
const { key, value, loc } = properties[i];
resetMapping(loc); // reset source mapping for every property.
// key
genExpressionAsPropertyKey(key, context);
push(`: `);
// value
genNode(value, context);
if (i < properties.length - 1) {
// will only reach this if it's multilines
push(`,`);
newline();
}
}
multilines && deindent();
const lastChar = context.code[context.code.length - 1];
push(multilines || /[\])}]/.test(lastChar) ? `}` : ` }`);
}
function genArrayExpression(node, context) {
genNodeListAsArray(node.elements, context);
}
function genFunctionExpression(node, context) {
const { push, indent, deindent } = context;
const { params, returns, newline } = node;
push(`(`, node);
if (isArray(params)) {
genNodeList(params, context);
}
else if (params) {
genNode(params, context);
}
push(`) => `);
if (newline) {
push(`{`);
indent();
push(`return `);
}
if (isArray(returns)) {
genNodeListAsArray(returns, context);
}
else {
genNode(returns, context);
}
if (newline) {
deindent();
push(`}`);
}
}
function genConditionalExpression(node, context) {
const { test, consequent, alternate } = node;
const { push, indent, deindent, newline } = context;
if (test.type === 4 /* SIMPLE_EXPRESSION */) {
const needsParens = !isSimpleIdentifier(test.content);
needsParens && push(`(`);
genExpression(test, context);
needsParens && push(`)`);
}
else {
push(`(`);
genCompoundExpression(test, context);
push(`)`);
}
indent();
context.indentLevel++;
push(`? `);
genNode(consequent, context);
context.indentLevel--;
newline();
push(`: `);
const isNested = alternate.type === 19 /* JS_CONDITIONAL_EXPRESSION */;
if (!isNested) {
context.indentLevel++;
}
genNode(alternate, context);
if (!isNested) {
context.indentLevel--;
}
deindent(true /* without newline */);
}
function genSequenceExpression(node, context) {
context.push(`(`);
genNodeList(node.expressions, context);
context.push(`)`);
}
function genCacheExpression(node, context) {
const { push, helper, indent, deindent, newline } = context;
push(`_cache[${node.index}] || (`);
if (node.isVNode) {
indent();
push(`${helper(SET_BLOCK_TRACKING)}(-1),`);
newline();
}
push(`_cache[${node.index}] = `);
genNode(node.value, context);
if (node.isVNode) {
push(`,`);
newline();
push(`${helper(SET_BLOCK_TRACKING)}(1),`);
newline();
push(`_cache[${node.index}]`);
deindent();
}
push(`)`);
}
const transformIf = createStructuralDirectiveTransform(/^(if|else|else-if)$/, (node, dir, context) => {
if (dir.name !== 'else' &&
(!dir.exp || !dir.exp.content.trim())) {
const loc = dir.exp ? dir.exp.loc : node.loc;
context.onError(createCompilerError(35 /* X_V_IF_NO_EXPRESSION */, dir.loc));
dir.exp = createSimpleExpression(`true`, false, loc);
}
if (dir.name === 'if') {
const branch = createIfBranch(node, dir);
const codegenNode = createSequenceExpression([
createCallExpression(context.helper(OPEN_BLOCK))
]);
context.replaceNode({
type: 9 /* IF */,
loc: node.loc,
branches: [branch],
codegenNode
});
// Exit callback. Complete the codegenNode when all children have been
// transformed.
return () => {
codegenNode.expressions.push(createCodegenNodeForBranch(branch, 0, context));
};
}
else {
// locate the adjacent v-if
const siblings = context.parent.children;
const comments = [];
let i = siblings.indexOf(node);
while (i-- >= -1) {
const sibling = siblings[i];
if ( sibling && sibling.type === 3 /* COMMENT */) {
context.removeNode(sibling);
comments.unshift(sibling);
continue;
}
if (sibling && sibling.type === 9 /* IF */) {
// move the node to the if node's branches
context.removeNode();
const branch = createIfBranch(node, dir);
if ( comments.length) {
branch.children = [...comments, ...branch.children];
}
sibling.branches.push(branch);
// since the branch was removed, it will not be traversed.
// make sure to traverse here.
traverseChildren(branch, context);
// make sure to reset currentNode after traversal to indicate this
// node has been removed.
context.currentNode = null;
// attach this branch's codegen node to the v-if root.
let parentCondition = sibling.codegenNode
.expressions[1];
while (true) {
if (parentCondition.alternate.type ===
19 /* JS_CONDITIONAL_EXPRESSION */) {
parentCondition = parentCondition.alternate;
}
else {
parentCondition.alternate = createCodegenNodeForBranch(branch, sibling.branches.length - 1, context);
break;
}
}
}
else {
context.onError(createCompilerError(36 /* X_V_ELSE_NO_ADJACENT_IF */, node.loc));
}
break;
}
}
});
function createIfBranch(node, dir) {
return {
type: 10 /* IF_BRANCH */,
loc: node.loc,
condition: dir.name === 'else' ? undefined : dir.exp,
children: node.tagType === 3 /* TEMPLATE */ ? node.children : [node]
};
}
function createCodegenNodeForBranch(branch, index, context) {
if (branch.condition) {
return createConditionalExpression(branch.condition, createChildrenCodegenNode(branch, index, context),
// make sure to pass in asBlock: true so that the comment node call
// closes the current block.
createCallExpression(context.helper(CREATE_COMMENT), [
'"v-if"' ,
'true'
]));
}
else {
return createChildrenCodegenNode(branch, index, context);
}
}
function createChildrenCodegenNode(branch, index, context) {
const { helper } = context;
const keyProperty = createObjectProperty(`key`, createSimpleExpression(index + '', false));
const { children } = branch;
const child = children[0];
const needFragmentWrapper = children.length !== 1 || child.type !== 1 /* ELEMENT */;
if (needFragmentWrapper) {
const blockArgs = [
helper(FRAGMENT),
createObjectExpression([keyProperty]),
children
];
if (children.length === 1 && child.type === 11 /* FOR */) {
// optimize away nested fragments when child is a ForNode
const forBlockArgs = child.codegenNode.expressions[1].arguments;
// directly use the for block's children and patchFlag
blockArgs[2] = forBlockArgs[2];
blockArgs[3] = forBlockArgs[3];
}
return createCallExpression(helper(CREATE_BLOCK), blockArgs);
}
else {
const childCodegen = child.codegenNode;
let vnodeCall = childCodegen;
// Element with custom directives. Locate the actual createVNode() call.
if (vnodeCall.callee === WITH_DIRECTIVES) {
vnodeCall = vnodeCall.arguments[0];
}
// Change createVNode to createBlock.
if (vnodeCall.callee === CREATE_VNODE) {
vnodeCall.callee = helper(CREATE_BLOCK);
}
// inject branch key
injectProp(vnodeCall, keyProperty, context);
return childCodegen;
}
}
const transformFor = createStructuralDirectiveTransform('for', (node, dir, context) => {
if (!dir.exp) {
context.onError(createCompilerError(37 /* X_V_FOR_NO_EXPRESSION */, dir.loc));
return;
}
const parseResult = parseForExpression(
// can only be simple expression because vFor transform is applied
// before expression transform.
dir.exp);
if (!parseResult) {
context.onError(createCompilerError(38 /* X_V_FOR_MALFORMED_EXPRESSION */, dir.loc));
return;
}
const { helper, addIdentifiers, removeIdentifiers, scopes } = context;
const { source, value, key, index } = parseResult;
// create the loop render function expression now, and add the
// iterator on exit after all children have been traversed
const renderExp = createCallExpression(helper(RENDER_LIST), [source]);
const keyProp = findProp(node, `key`);
const fragmentFlag = keyProp
? 64 /* KEYED_FRAGMENT */
: 128 /* UNKEYED_FRAGMENT */;
const codegenNode = createSequenceExpression([
// fragment blocks disable tracking since they always diff their children
createCallExpression(helper(OPEN_BLOCK), [`false`]),
createCallExpression(helper(CREATE_BLOCK), [
helper(FRAGMENT),
`null`,
renderExp,
fragmentFlag + ( ` /* ${PatchFlagNames[fragmentFlag]} */` )
])
]);
context.replaceNode({
type: 11 /* FOR */,
loc: dir.loc,
source,
valueAlias: value,
keyAlias: key,
objectIndexAlias: index,
children: node.tagType === 3 /* TEMPLATE */ ? node.children : [node],
codegenNode
});
// bookkeeping
scopes.vFor++;
return () => {
scopes.vFor--;
// finish the codegen now that all children have been traversed
let childBlock;
const isTemplate = isTemplateNode(node);
const slotOutlet = isSlotOutlet(node)
? node
: isTemplate &&
node.children.length === 1 &&
isSlotOutlet(node.children[0])
? node.children[0] // api-extractor somehow fails to infer this
: null;
const keyProperty = keyProp
? createObjectProperty(`key`, keyProp.type === 6 /* ATTRIBUTE */
? createSimpleExpression(keyProp.value.content, true)
: keyProp.exp)
: null;
if (slotOutlet) {
// <slot v-for="..."> or <template v-for="..."><slot/></template>
childBlock = slotOutlet.codegenNode;
if (isTemplate && keyProperty) {
// <template v-for="..." :key="..."><slot/></template>
// we need to inject the key to the renderSlot() call.
// the props for renderSlot is passed as the 3rd argument.
injectProp(childBlock, keyProperty, context);
}
}
else if (isTemplate) {
// <template v-for="...">
// should generate a fragment block for each loop
childBlock = createBlockExpression(createCallExpression(helper(CREATE_BLOCK), [
helper(FRAGMENT),
keyProperty ? createObjectExpression([keyProperty]) : `null`,
node.children
]), context);
}
else {
// Normal element v-for. Directly use the child's codegenNode
// arguments, but replace createVNode() with createBlock()
let codegenNode = node.codegenNode;
if (codegenNode.callee === WITH_DIRECTIVES) {
codegenNode.arguments[0].callee = helper(CREATE_BLOCK);
}
else {
codegenNode.callee = helper(CREATE_BLOCK);
}
childBlock = createBlockExpression(codegenNode, context);
}
renderExp.arguments.push(createFunctionExpression(createForLoopParams(parseResult), childBlock, true /* force newline */));
};
});
const forAliasRE = /([\s\S]*?)\s+(?:in|of)\s+([\s\S]*)/;
// This regex doesn't cover the case if key or index aliases have destructuring,
// but those do not make sense in the first place, so this works in practice.
const forIteratorRE = /,([^,\}\]]*)(?:,([^,\}\]]*))?$/;
const stripParensRE = /^\(|\)$/g;
function parseForExpression(input, context) {
const loc = input.loc;
const exp = input.content;
const inMatch = exp.match(forAliasRE);
if (!inMatch)
return;
const [, LHS, RHS] = inMatch;
const result = {
source: createAliasExpression(loc, RHS.trim(), exp.indexOf(RHS, LHS.length)),
value: undefined,
key: undefined,
index: undefined
};
let valueContent = LHS.trim()
.replace(stripParensRE, '')
.trim();
const trimmedOffset = LHS.indexOf(valueContent);
const iteratorMatch = valueContent.match(forIteratorRE);
if (iteratorMatch) {
valueContent = valueContent.replace(forIteratorRE, '').trim();
const keyContent = iteratorMatch[1].trim();
let keyOffset;
if (keyContent) {
keyOffset = exp.indexOf(keyContent, trimmedOffset + valueContent.length);
result.key = createAliasExpression(loc, keyContent, keyOffset);
}
if (iteratorMatch[2]) {
const indexContent = iteratorMatch[2].trim();
if (indexContent) {
result.index = createAliasExpression(loc, indexContent, exp.indexOf(indexContent, result.key
? keyOffset + keyContent.length
: trimmedOffset + valueContent.length));
}
}
}
if (valueContent) {
result.value = createAliasExpression(loc, valueContent, trimmedOffset);
}
return result;
}
function createAliasExpression(range, content, offset) {
return createSimpleExpression(content, false, getInnerRange(range, offset, content.length));
}
function createForLoopParams({ value, key, index }) {
const params = [];
if (value) {
params.push(value);
}
if (key) {
if (!value) {
params.push(createSimpleExpression(`_`, false));
}
params.push(key);
}
if (index) {
if (!key) {
if (!value) {
params.push(createSimpleExpression(`_`, false));
}
params.push(createSimpleExpression(`__`, false));
}
params.push(index);
}
return params;
}
const isStaticExp = (p) => p.type === 4 /* SIMPLE_EXPRESSION */ && p.isStatic;
const defaultFallback = createSimpleExpression(`undefined`, false);
// A NodeTransform that:
// 1. Tracks scope identifiers for scoped slots so that they don't get prefixed
// by transformExpression. This is only applied in non-browser builds with
// { prefixIdentifiers: true }.
// 2. Track v-slot depths so that we know a slot is inside another slot.
// Note the exit callback is executed before buildSlots() on the same node,
// so only nested slots see positive numbers.
const trackSlotScopes = (node, context) => {
if (node.type === 1 /* ELEMENT */ &&
(node.tagType === 1 /* COMPONENT */ ||
node.tagType === 3 /* TEMPLATE */)) {
// We are only checking non-empty v-slot here
// since we only care about slots that introduce scope variables.
const vSlot = findDir(node, 'slot');
if (vSlot) {
const slotProps = vSlot.exp;
context.scopes.vSlot++;
return () => {
context.scopes.vSlot--;
};
}
}
};
// Instead of being a DirectiveTransform, v-slot processing is called during
// transformElement to build the slots object for a component.
function buildSlots(node, context) {
const { children, loc } = node;
const slotsProperties = [];
const dynamicSlots = [];
// If the slot is inside a v-for or another v-slot, force it to be dynamic
// since it likely uses a scope variable.
let hasDynamicSlots = context.scopes.vSlot > 0 || context.scopes.vFor > 0;
// 1. Check for default slot with slotProps on component itself.
// <Comp v-slot="{ prop }"/>
const explicitDefaultSlot = findDir(node, 'slot', true);
if (explicitDefaultSlot) {
const { arg, exp, loc } = explicitDefaultSlot;
if (arg) {
context.onError(createCompilerError(42 /* X_V_SLOT_NAMED_SLOT_ON_COMPONENT */, loc));
}
slotsProperties.push(buildDefaultSlot(exp, children, loc));
}
// 2. Iterate through children and check for template slots
// <template v-slot:foo="{ prop }">
let hasTemplateSlots = false;
let extraneousChild = undefined;
const seenSlotNames = new Set();
for (let i = 0; i < children.length; i++) {
const slotElement = children[i];
let slotDir;
if (!isTemplateNode(slotElement) ||
!(slotDir = findDir(slotElement, 'slot', true))) {
// not a <template v-slot>, skip.
if (slotElement.type !== 3 /* COMMENT */ && !extraneousChild) {
extraneousChild = slotElement;
}
continue;
}
if (explicitDefaultSlot) {
// already has on-component default slot - this is incorrect usage.
context.onError(createCompilerError(43 /* X_V_SLOT_MIXED_SLOT_USAGE */, slotDir.loc));
break;
}
hasTemplateSlots = true;
const { children: slotChildren, loc: slotLoc } = slotElement;
const { arg: slotName = createSimpleExpression(`default`, true), exp: slotProps, loc: dirLoc } = slotDir;
// check if name is dynamic.
let staticSlotName;
if (isStaticExp(slotName)) {
staticSlotName = slotName ? slotName.content : `default`;
}
else {
hasDynamicSlots = true;
}
const slotFunction = createFunctionExpression(slotProps, slotChildren, false, slotChildren.length ? slotChildren[0].loc : slotLoc);
// check if this slot is conditional (v-if/v-for)
let vIf;
let vElse;
let vFor;
if ((vIf = findDir(slotElement, 'if'))) {
hasDynamicSlots = true;
dynamicSlots.push(createConditionalExpression(vIf.exp, buildDynamicSlot(slotName, slotFunction), defaultFallback));
}
else if ((vElse = findDir(slotElement, /^else(-if)?$/, true /* allowEmpty */))) {
// find adjacent v-if
let j = i;
let prev;
while (j--) {
prev = children[j];
if (prev.type !== 3 /* COMMENT */) {
break;
}
}
if (prev && isTemplateNode(prev) && findDir(prev, 'if')) {
// remove node
children.splice(i, 1);
i--;
assert(dynamicSlots.length > 0);
// attach this slot to previous conditional
let conditional = dynamicSlots[dynamicSlots.length - 1];
while (conditional.alternate.type === 19 /* JS_CONDITIONAL_EXPRESSION */) {
conditional = conditional.alternate;
}
conditional.alternate = vElse.exp
? createConditionalExpression(vElse.exp, buildDynamicSlot(slotName, slotFunction), defaultFallback)
: buildDynamicSlot(slotName, slotFunction);
}
else {
context.onError(createCompilerError(36 /* X_V_ELSE_NO_ADJACENT_IF */, vElse.loc));
}
}
else if ((vFor = findDir(slotElement, 'for'))) {
hasDynamicSlots = true;
const parseResult = vFor.parseResult ||
parseForExpression(vFor.exp);
if (parseResult) {
// Render the dynamic slots as an array and add it to the createSlot()
// args. The runtime knows how to handle it appropriately.
dynamicSlots.push(createCallExpression(context.helper(RENDER_LIST), [
parseResult.source,
createFunctionExpression(createForLoopParams(parseResult), buildDynamicSlot(slotName, slotFunction), true)
]));
}
else {
context.onError(createCompilerError(38 /* X_V_FOR_MALFORMED_EXPRESSION */, vFor.loc));
}
}
else {
// check duplicate static names
if (staticSlotName) {
if (seenSlotNames.has(staticSlotName)) {
context.onError(createCompilerError(44 /* X_V_SLOT_DUPLICATE_SLOT_NAMES */, dirLoc));
continue;
}
seenSlotNames.add(staticSlotName);
}
slotsProperties.push(createObjectProperty(slotName, slotFunction));
}
}
if (hasTemplateSlots && extraneousChild) {
context.onError(createCompilerError(45 /* X_V_SLOT_EXTRANEOUS_NON_SLOT_CHILDREN */, extraneousChild.loc));
}
if (!explicitDefaultSlot && !hasTemplateSlots) {
// implicit default slot.
slotsProperties.push(buildDefaultSlot(undefined, children, loc));
}
let slots = createObjectExpression(slotsProperties.concat(createObjectProperty(`_compiled`, createSimpleExpression(`true`, false))), loc);
if (dynamicSlots.length) {
slots = createCallExpression(context.helper(CREATE_SLOTS), [
slots,
createArrayExpression(dynamicSlots)
]);
}
return {
slots,
hasDynamicSlots
};
}
function buildDefaultSlot(slotProps, children, loc) {
return createObjectProperty(`default`, createFunctionExpression(slotProps, children, false, children.length ? children[0].loc : loc));
}
function buildDynamicSlot(name, fn) {
return createObjectExpression([
createObjectProperty(`name`, name),
createObjectProperty(`fn`, fn)
]);
}
// some directive transforms (e.g. v-model) may return a symbol for runtime
// import, which should be used instead of a resolveDirective call.
const directiveImportMap = new WeakMap();
// generate a JavaScript AST for this element's codegen
const transformElement = (node, context) => {
if (node.type !== 1 /* ELEMENT */ ||
// handled by transformSlotOutlet
node.tagType === 2 /* SLOT */ ||
// <template v-if/v-for> should have already been replaced
// <templte v-slot> is handled by buildSlots
(node.tagType === 3 /* TEMPLATE */ && node.props.some(isVSlot))) {
return;
}
// perform the work on exit, after all child expressions have been
// processed and merged.
return () => {
const { tag, tagType, props } = node;
const isPortal = tag === 'portal' || tag === 'Portal';
const isSuspense = tag === 'suspense' || tag === 'Suspense';
const isKeepAlive = tag === 'keep-alive' || tag === 'KeepAlive';
const isComponent = tagType === 1 /* COMPONENT */;
let hasProps = props.length > 0;
let patchFlag = 0;
let runtimeDirectives;
let dynamicPropNames;
let dynamicComponent;
// handle dynamic component
const isProp = findProp(node, 'is');
if (tag === 'component') {
if (isProp) {
// static <component is="foo" />
if (isProp.type === 6 /* ATTRIBUTE */) {
const tag = isProp.value && isProp.value.content;
if (tag) {
context.helper(RESOLVE_COMPONENT);
context.components.add(tag);
dynamicComponent = toValidAssetId(tag, `component`);
}
}
// dynamic <component :is="asdf" />
else if (isProp.exp) {
dynamicComponent = createCallExpression(context.helper(RESOLVE_DYNAMIC_COMPONENT), [isProp.exp]);
}
}
}
let nodeType;
if (dynamicComponent) {
nodeType = dynamicComponent;
}
else if (isPortal) {
nodeType = context.helper(PORTAL);
}
else if (isSuspense) {
nodeType = context.helper(SUSPENSE);
}
else if (isKeepAlive) {
nodeType = context.helper(KEEP_ALIVE);
}
else if (isComponent) {
// user component w/ resolve
context.helper(RESOLVE_COMPONENT);
context.components.add(tag);
nodeType = toValidAssetId(tag, `component`);
}
else {
// plain element
nodeType = `"${node.tag}"`;
}
const args = [nodeType];
// props
if (hasProps) {
const propsBuildResult = buildProps(node, context,
// skip reserved "is" prop <component is>
node.props.filter(p => p !== isProp));
patchFlag = propsBuildResult.patchFlag;
dynamicPropNames = propsBuildResult.dynamicPropNames;
runtimeDirectives = propsBuildResult.directives;
if (!propsBuildResult.props) {
hasProps = false;
}
else {
args.push(propsBuildResult.props);
}
}
// children
const hasChildren = node.children.length > 0;
if (hasChildren) {
if (!hasProps) {
args.push(`null`);
}
// Portal should have normal children instead of slots
if (isComponent && !isPortal) {
const { slots, hasDynamicSlots } = buildSlots(node, context);
args.push(slots);
if (hasDynamicSlots) {
patchFlag |= 256 /* DYNAMIC_SLOTS */;
}
}
else if (node.children.length === 1) {
const child = node.children[0];
const type = child.type;
// check for dynamic text children
const hasDynamicTextChild = type === 5 /* INTERPOLATION */ ||
type === 8 /* COMPOUND_EXPRESSION */;
if (hasDynamicTextChild && !isStaticNode(child)) {
patchFlag |= 1 /* TEXT */;
}
// pass directly if the only child is a text node
// (plain / interpolation / expression)
if (hasDynamicTextChild || type === 2 /* TEXT */) {
args.push(child);
}
else {
args.push(node.children);
}
}
else {
args.push(node.children);
}
}
// patchFlag & dynamicPropNames
if (patchFlag !== 0) {
if (!hasChildren) {
if (!hasProps) {
args.push(`null`);
}
args.push(`null`);
}
{
const flagNames = Object.keys(PatchFlagNames)
.map(Number)
.filter(n => n > 0 && patchFlag & n)
.map(n => PatchFlagNames[n])
.join(`, `);
args.push(patchFlag + ` /* ${flagNames} */`);
}
if (dynamicPropNames && dynamicPropNames.length) {
args.push(`[${dynamicPropNames.map(n => JSON.stringify(n)).join(`, `)}]`);
}
}
const { loc } = node;
const vnode = createCallExpression(context.helper(CREATE_VNODE), args, loc);
if (runtimeDirectives && runtimeDirectives.length) {
node.codegenNode = createCallExpression(context.helper(WITH_DIRECTIVES), [
vnode,
createArrayExpression(runtimeDirectives.map(dir => buildDirectiveArgs(dir, context)), loc)
], loc);
}
else {
node.codegenNode = vnode;
}
};
};
function buildProps(node, context, props = node.props) {
const elementLoc = node.loc;
const isComponent = node.tagType === 1 /* COMPONENT */;
let properties = [];
const mergeArgs = [];
const runtimeDirectives = [];
// patchFlag analysis
let patchFlag = 0;
let hasRef = false;
let hasClassBinding = false;
let hasStyleBinding = false;
let hasDynamicKeys = false;
const dynamicPropNames = [];
const analyzePatchFlag = ({ key, value }) => {
if (key.type === 4 /* SIMPLE_EXPRESSION */ && key.isStatic) {
if (value.type === 20 /* JS_CACHE_EXPRESSION */ ||
((value.type === 4 /* SIMPLE_EXPRESSION */ ||
value.type === 8 /* COMPOUND_EXPRESSION */) &&
isStaticNode(value))) {
return;
}
const name = key.content;
if (name === 'ref') {
hasRef = true;
}
else if (name === 'class') {
hasClassBinding = true;
}
else if (name === 'style') {
hasStyleBinding = true;
}
else if (name !== 'key') {
dynamicPropNames.push(name);
}
}
else {
hasDynamicKeys = true;
}
};
for (let i = 0; i < props.length; i++) {
// static attribute
const prop = props[i];
if (prop.type === 6 /* ATTRIBUTE */) {
const { loc, name, value } = prop;
if (name === 'ref') {
hasRef = true;
}
properties.push(createObjectProperty(createSimpleExpression(name, true, getInnerRange(loc, 0, name.length)), createSimpleExpression(value ? value.content : '', true, value ? value.loc : loc)));
}
else {
// directives
const { name, arg, exp, loc } = prop;
// skip v-slot - it is handled by its dedicated transform.
if (name === 'slot') {
if (!isComponent) {
context.onError(createCompilerError(46 /* X_V_SLOT_MISPLACED */, loc));
}
continue;
}
// skip v-once - it is handled by its dedicated transform.
if (name === 'once') {
continue;
}
// special case for v-bind and v-on with no argument
const isBind = name === 'bind';
const isOn = name === 'on';
if (!arg && (isBind || isOn)) {
hasDynamicKeys = true;
if (exp) {
if (properties.length) {
mergeArgs.push(createObjectExpression(dedupeProperties(properties), elementLoc));
properties = [];
}
if (isBind) {
mergeArgs.push(exp);
}
else {
// v-on="obj" -> toHandlers(obj)
mergeArgs.push({
type: 13 /* JS_CALL_EXPRESSION */,
loc,
callee: context.helper(TO_HANDLERS),
arguments: [exp]
});
}
}
else {
context.onError(createCompilerError(isBind
? 39 /* X_V_BIND_NO_EXPRESSION */
: 40 /* X_V_ON_NO_EXPRESSION */, loc));
}
continue;
}
const directiveTransform = context.directiveTransforms[name];
if (directiveTransform) {
// has built-in directive transform.
const { props, needRuntime } = directiveTransform(prop, node, context);
props.forEach(analyzePatchFlag);
properties.push(...props);
if (needRuntime) {
runtimeDirectives.push(prop);
if (isSymbol(needRuntime)) {
directiveImportMap.set(prop, needRuntime);
}
}
}
else {
// no built-in transform, this is a user custom directive.
runtimeDirectives.push(prop);
}
}
}
let propsExpression = undefined;
// has v-bind="object" or v-on="object", wrap with mergeProps
if (mergeArgs.length) {
if (properties.length) {
mergeArgs.push(createObjectExpression(dedupeProperties(properties), elementLoc));
}
if (mergeArgs.length > 1) {
propsExpression = createCallExpression(context.helper(MERGE_PROPS), mergeArgs, elementLoc);
}
else {
// single v-bind with nothing else - no need for a mergeProps call
propsExpression = mergeArgs[0];
}
}
else if (properties.length) {
propsExpression = createObjectExpression(dedupeProperties(properties), elementLoc);
}
// patchFlag analysis
if (hasDynamicKeys) {
patchFlag |= 16 /* FULL_PROPS */;
}
else {
if (hasClassBinding) {
patchFlag |= 2 /* CLASS */;
}
if (hasStyleBinding) {
patchFlag |= 4 /* STYLE */;
}
if (dynamicPropNames.length) {
patchFlag |= 8 /* PROPS */;
}
}
if (patchFlag === 0 && (hasRef || runtimeDirectives.length > 0)) {
patchFlag |= 32 /* NEED_PATCH */;
}
return {
props: propsExpression,
directives: runtimeDirectives,
patchFlag,
dynamicPropNames
};
}
// Dedupe props in an object literal.
// Literal duplicated attributes would have been warned during the parse phase,
// however, it's possible to encounter duplicated `onXXX` handlers with different
// modifiers. We also need to merge static and dynamic class / style attributes.
// - onXXX handlers / style: merge into array
// - class: merge into single expression with concatenation
function dedupeProperties(properties) {
const knownProps = {};
const deduped = [];
for (let i = 0; i < properties.length; i++) {
const prop = properties[i];
// dynamic keys are always allowed
if (prop.key.type === 8 /* COMPOUND_EXPRESSION */ || !prop.key.isStatic) {
deduped.push(prop);
continue;
}
const name = prop.key.content;
const existing = knownProps[name];
if (existing) {
if (name === 'style' ||
name === 'class' ||
name.startsWith('on') ||
name.startsWith('vnode')) {
mergeAsArray(existing, prop);
}
// unexpected duplicate, should have emitted error during parse
}
else {
knownProps[name] = prop;
deduped.push(prop);
}
}
return deduped;
}
function mergeAsArray(existing, incoming) {
if (existing.value.type === 16 /* JS_ARRAY_EXPRESSION */) {
existing.value.elements.push(incoming.value);
}
else {
existing.value = createArrayExpression([existing.value, incoming.value], existing.loc);
}
}
function buildDirectiveArgs(dir, context) {
const dirArgs = [];
const runtime = directiveImportMap.get(dir);
if (runtime) {
context.helper(runtime);
dirArgs.push(context.helperString(runtime));
}
else {
// inject statement for resolving directive
context.helper(RESOLVE_DIRECTIVE);
context.directives.add(dir.name);
dirArgs.push(toValidAssetId(dir.name, `directive`));
}
const { loc } = dir;
if (dir.exp)
dirArgs.push(dir.exp);
if (dir.arg) {
if (!dir.exp) {
dirArgs.push(`void 0`);
}
dirArgs.push(dir.arg);
}
if (Object.keys(dir.modifiers).length) {
if (!dir.arg) {
if (!dir.exp) {
dirArgs.push(`void 0`);
}
dirArgs.push(`void 0`);
}
dirArgs.push(createObjectExpression(dir.modifiers.map(modifier => createObjectProperty(modifier, createSimpleExpression(`true`, false, loc))), loc));
}
return createArrayExpression(dirArgs, dir.loc);
}
const transformSlotOutlet = (node, context) => {
if (isSlotOutlet(node)) {
const { props, children, loc } = node;
const $slots = context.prefixIdentifiers ? `_ctx.$slots` : `$slots`;
let slotName = `"default"`;
// check for <slot name="xxx" OR :name="xxx" />
let nameIndex = -1;
for (let i = 0; i < props.length; i++) {
const prop = props[i];
if (prop.type === 6 /* ATTRIBUTE */) {
if (prop.name === `name` && prop.value) {
// static name="xxx"
slotName = JSON.stringify(prop.value.content);
nameIndex = i;
break;
}
}
else if (prop.name === `bind`) {
const { arg, exp } = prop;
if (arg &&
exp &&
arg.type === 4 /* SIMPLE_EXPRESSION */ &&
arg.isStatic &&
arg.content === `name`) {
// dynamic :name="xxx"
slotName = exp;
nameIndex = i;
break;
}
}
}
const slotArgs = [$slots, slotName];
const propsWithoutName = nameIndex > -1
? props.slice(0, nameIndex).concat(props.slice(nameIndex + 1))
: props;
let hasProps = propsWithoutName.length > 0;
if (hasProps) {
const { props: propsExpression, directives } = buildProps(node, context, propsWithoutName);
if (directives.length) {
context.onError(createCompilerError(41 /* X_V_SLOT_UNEXPECTED_DIRECTIVE_ON_SLOT_OUTLET */, directives[0].loc));
}
if (propsExpression) {
slotArgs.push(propsExpression);
}
else {
hasProps = false;
}
}
if (children.length) {
if (!hasProps) {
slotArgs.push(`{}`);
}
slotArgs.push(children);
}
node.codegenNode = createCallExpression(context.helper(RENDER_SLOT), slotArgs, loc);
}
};
const fnExpRE = /^([\w$_]+|\([^)]*?\))\s*=>|^function(?:\s+[\w$]+)?\s*\(/;
const transformOn = (dir, node, context, augmentor) => {
const { loc, modifiers, arg } = dir;
if (!dir.exp && !modifiers.length) {
context.onError(createCompilerError(40 /* X_V_ON_NO_EXPRESSION */, loc));
}
let eventName;
if (arg.type === 4 /* SIMPLE_EXPRESSION */) {
if (arg.isStatic) {
eventName = createSimpleExpression(`on${capitalize(arg.content)}`, true, arg.loc);
}
else {
eventName = createCompoundExpression([`"on" + (`, arg, `)`]);
}
}
else {
// already a compound expression.
eventName = arg;
eventName.children.unshift(`"on" + (`);
eventName.children.push(`)`);
}
// handler processing
let exp = dir.exp;
let isCacheable = !exp;
if (exp) {
const isMemberExp = isMemberExpression(exp.content);
const isInlineStatement = !(isMemberExp || fnExpRE.test(exp.content));
if (isInlineStatement || (isCacheable && isMemberExp)) {
// wrap inline statement in a function expression
exp = createCompoundExpression([
`$event => (`,
...(exp.type === 4 /* SIMPLE_EXPRESSION */ ? [exp] : exp.children),
`)`
]);
}
}
let ret = {
props: [
createObjectProperty(eventName, exp || createSimpleExpression(`() => {}`, false, loc))
],
needRuntime: false
};
// apply extended compiler augmentor
if (augmentor) {
ret = augmentor(ret);
}
if (isCacheable) {
// cache handlers so that it's always the same handler being passed down.
// this avoids unnecessary re-renders when users use inline handlers on
// components.
ret.props[0].value = context.cache(ret.props[0].value);
}
return ret;
};
// v-bind without arg is handled directly in ./transformElements.ts due to it affecting
// codegen for the entire props object. This transform here is only for v-bind
// *with* args.
const transformBind = (dir, node, context) => {
const { exp, modifiers, loc } = dir;
const arg = dir.arg;
if (!exp) {
context.onError(createCompilerError(39 /* X_V_BIND_NO_EXPRESSION */, loc));
}
// .prop is no longer necessary due to new patch behavior
// .sync is replaced by v-model:arg
if (modifiers.includes('camel')) {
if (arg.type === 4 /* SIMPLE_EXPRESSION */) {
if (arg.isStatic) {
arg.content = camelize(arg.content);
}
else {
arg.content = `${context.helperString(CAMELIZE)}(${arg.content})`;
}
}
else {
arg.children.unshift(`${context.helperString(CAMELIZE)}(`);
arg.children.push(`)`);
}
}
return {
props: [
createObjectProperty(arg, exp || createSimpleExpression('', true, loc))
],
needRuntime: false
};
};
const isText$1 = (node) => node.type === 5 /* INTERPOLATION */ || node.type === 2 /* TEXT */;
// Merge adjacent text nodes and expressions into a single expression
// e.g. <div>abc {{ d }} {{ e }}</div> should have a single expression node as child.
const transformText = (node, context) => {
if (node.type === 0 /* ROOT */ || node.type === 1 /* ELEMENT */) {
// perform the transform on node exit so that all expressions have already
// been processed.
return () => {
const children = node.children;
let currentContainer = undefined;
let hasText = false;
for (let i = 0; i < children.length; i++) {
const child = children[i];
if (isText$1(child)) {
hasText = true;
for (let j = i + 1; j < children.length; j++) {
const next = children[j];
if (isText$1(next)) {
if (!currentContainer) {
currentContainer = children[i] = {
type: 8 /* COMPOUND_EXPRESSION */,
loc: child.loc,
children: [child]
};
}
// merge adjacent text node into current
currentContainer.children.push(` + `, next);
children.splice(j, 1);
j--;
}
else {
currentContainer = undefined;
break;
}
}
}
}
if (hasText && children.length > 1) {
// when an element has mixed text/element children, convert text nodes
// into createTextVNode(text) calls.
for (let i = 0; i < children.length; i++) {
const child = children[i];
if (isText$1(child) || child.type === 8 /* COMPOUND_EXPRESSION */) {
const callArgs = [];
// createTextVNode defaults to single whitespace, so if it is a
// single space the code could be an empty call to save bytes.
if (child.type !== 2 /* TEXT */ || child.content !== ' ') {
callArgs.push(child);
}
// mark dynamic text with flag so it gets patched inside a block
if (child.type !== 2 /* TEXT */) {
callArgs.push(`${1 /* TEXT */} /* ${PatchFlagNames[1 /* TEXT */]} */`);
}
children[i] = {
type: 12 /* TEXT_CALL */,
content: child,
loc: child.loc,
codegenNode: createCallExpression(context.helper(CREATE_TEXT), callArgs)
};
}
}
}
};
}
};
const transformOnce = (node, context) => {
if (node.type === 1 /* ELEMENT */ && findDir(node, 'once', true)) {
context.helper(SET_BLOCK_TRACKING);
return () => {
if (node.codegenNode) {
node.codegenNode = context.cache(node.codegenNode, true /* isVNode */);
}
};
}
};
const transformModel = (dir, node, context) => {
const { exp, arg } = dir;
if (!exp) {
context.onError(createCompilerError(47 /* X_V_MODEL_NO_EXPRESSION */, dir.loc));
return createTransformProps();
}
const expString = exp.type === 4 /* SIMPLE_EXPRESSION */ ? exp.content : exp.loc.source;
if (!isMemberExpression(expString)) {
context.onError(createCompilerError(48 /* X_V_MODEL_MALFORMED_EXPRESSION */, exp.loc));
return createTransformProps();
}
const propName = arg ? arg : createSimpleExpression('modelValue', true);
const eventName = arg
? arg.type === 4 /* SIMPLE_EXPRESSION */ && arg.isStatic
? `onUpdate:${arg.content}`
: createCompoundExpression([
'"onUpdate:" + ',
...(arg.type === 4 /* SIMPLE_EXPRESSION */ ? [arg] : arg.children)
])
: `onUpdate:modelValue`;
const props = [
// modelValue: foo
createObjectProperty(propName, dir.exp),
// "onUpdate:modelValue": $event => (foo = $event)
createObjectProperty(eventName, createCompoundExpression([
`$event => (`,
...(exp.type === 4 /* SIMPLE_EXPRESSION */ ? [exp] : exp.children),
` = $event)`
]))
];
// modelModifiers: { foo: true, "bar-baz": true }
if (dir.modifiers.length && node.tagType === 1 /* COMPONENT */) {
const modifiers = dir.modifiers
.map(m => (isSimpleIdentifier(m) ? m : JSON.stringify(m)) + `: true`)
.join(`, `);
const modifiersKey = arg
? arg.type === 4 /* SIMPLE_EXPRESSION */ && arg.isStatic
? `${arg.content}Modifiers`
: createCompoundExpression([
...(arg.type === 4 /* SIMPLE_EXPRESSION */
? [arg]
: arg.children),
' + "Modifiers"'
])
: `modelModifiers`;
props.push(createObjectProperty(modifiersKey, createSimpleExpression(`{ ${modifiers} }`, false, dir.loc, true)));
}
return createTransformProps(props);
};
function createTransformProps(props = []) {
return { props, needRuntime: false };
}
// we name it `baseCompile` so that higher order compilers like @vue/compiler-dom
// can export `compile` while re-exporting everything else.
function baseCompile(template, options = {}) {
/* istanbul ignore if */
{
const onError = options.onError || defaultOnError;
if (options.prefixIdentifiers === true) {
onError(createCompilerError(51 /* X_PREFIX_ID_NOT_SUPPORTED */));
}
else if (options.mode === 'module') {
onError(createCompilerError(52 /* X_MODULE_MODE_NOT_SUPPORTED */));
}
}
const ast = isString(template) ? parse(template, options) : template;
const prefixIdentifiers = !true &&
(options.prefixIdentifiers === true || options.mode === 'module');
transform(ast, {
...options,
prefixIdentifiers,
nodeTransforms: [
transformOnce,
transformIf,
transformFor,
...( []),
transformSlotOutlet,
transformElement,
trackSlotScopes,
transformText,
...(options.nodeTransforms || []) // user transforms
],
directiveTransforms: {
on: transformOn,
bind: transformBind,
model: transformModel,
...(options.directiveTransforms || {}) // user transforms
}
});
return generate(ast, {
...options,
prefixIdentifiers
});
}
const isRawTextContainer = /*#__PURE__*/ makeMap('style,iframe,script,noscript', true);
const parserOptionsMinimal = {
isVoidTag,
isNativeTag: tag => isHTMLTag(tag) || isSVGTag(tag),
isPreTag: tag => tag === 'pre',
// https://html.spec.whatwg.org/multipage/parsing.html#tree-construction-dispatcher
getNamespace(tag, parent) {
let ns = parent ? parent.ns : 0 /* HTML */;
if (parent && ns === 2 /* MATH_ML */) {
if (parent.tag === 'annotation-xml') {
if (tag === 'svg') {
return 1 /* SVG */;
}
if (parent.props.some(a => a.type === 6 /* ATTRIBUTE */ &&
a.name === 'encoding' &&
a.value != null &&
(a.value.content === 'text/html' ||
a.value.content === 'application/xhtml+xml'))) {
ns = 0 /* HTML */;
}
}
else if (/^m(?:[ions]|text)$/.test(parent.tag) &&
tag !== 'mglyph' &&
tag !== 'malignmark') {
ns = 0 /* HTML */;
}
}
else if (parent && ns === 1 /* SVG */) {
if (parent.tag === 'foreignObject' ||
parent.tag === 'desc' ||
parent.tag === 'title') {
ns = 0 /* HTML */;
}
}
if (ns === 0 /* HTML */) {
if (tag === 'svg') {
return 1 /* SVG */;
}
if (tag === 'math') {
return 2 /* MATH_ML */;
}
}
return ns;
},
// https://html.spec.whatwg.org/multipage/parsing.html#parsing-html-fragments
getTextMode(tag, ns) {
if (ns === 0 /* HTML */) {
if (tag === 'textarea' || tag === 'title') {
return 1 /* RCDATA */;
}
if (isRawTextContainer(tag)) {
return 2 /* RAWTEXT */;
}
}
return 0 /* DATA */;
}
};
// Parse inline CSS strings for static style attributes into an object.
// This is a NodeTransform since it works on the static `style` attribute and
// converts it into a dynamic equivalent:
// style="color: red" -> :style='{ "color": "red" }'
// It is then processed by `transformElement` and included in the generated
// props.
const transformStyle = (node, context) => {
if (node.type === 1 /* ELEMENT */) {
node.props.forEach((p, i) => {
if (p.type === 6 /* ATTRIBUTE */ && p.name === 'style' && p.value) {
// replace p with an expression node
const parsed = JSON.stringify(parseInlineCSS(p.value.content));
const exp = context.hoist(createSimpleExpression(parsed, false, p.loc));
node.props[i] = {
type: 7 /* DIRECTIVE */,
name: `bind`,
arg: createSimpleExpression(`style`, true, p.loc),
exp,
modifiers: [],
loc: p.loc
};
}
});
}
};
const listDelimiterRE = /;(?![^(]*\))/g;
const propertyDelimiterRE = /:(.+)/;
function parseInlineCSS(cssText) {
const res = {};
cssText.split(listDelimiterRE).forEach(function (item) {
if (item) {
const tmp = item.split(propertyDelimiterRE);
tmp.length > 1 && (res[tmp[0].trim()] = tmp[1].trim());
}
});
return res;
}
const transformCloak = (node, context) => {
return { props: [], needRuntime: false };
};
function createDOMCompilerError(code, loc) {
return createCompilerError(code, loc, DOMErrorMessages );
}
const DOMErrorMessages = {
[53 /* X_V_HTML_NO_EXPRESSION */]: `v-html is missing expression.`,
[54 /* X_V_HTML_WITH_CHILDREN */]: `v-html will override element children.`,
[55 /* X_V_TEXT_NO_EXPRESSION */]: `v-text is missing expression.`,
[56 /* X_V_TEXT_WITH_CHILDREN */]: `v-text will override element children.`,
[57 /* X_V_MODEL_ON_INVALID_ELEMENT */]: `v-model can only be used on <input>, <textarea> and <select> elements.`,
[58 /* X_V_MODEL_ARG_ON_ELEMENT */]: `v-model argument is not supported on plain elements.`,
[59 /* X_V_MODEL_ON_FILE_INPUT_ELEMENT */]: `v-model cannot used on file inputs since they are read-only. Use a v-on:change listener instead.`
};
const transformVHtml = (dir, node, context) => {
const { exp, loc } = dir;
if (!exp) {
context.onError(createDOMCompilerError(53 /* X_V_HTML_NO_EXPRESSION */, loc));
}
if (node.children.length) {
context.onError(createDOMCompilerError(54 /* X_V_HTML_WITH_CHILDREN */, loc));
node.children.length = 0;
}
return {
props: [
createObjectProperty(createSimpleExpression(`innerHTML`, true, loc), exp || createSimpleExpression('', true))
],
needRuntime: false
};
};
const transformVText = (dir, node, context) => {
const { exp, loc } = dir;
if (!exp) {
context.onError(createDOMCompilerError(55 /* X_V_TEXT_NO_EXPRESSION */, loc));
}
if (node.children.length) {
context.onError(createDOMCompilerError(56 /* X_V_TEXT_WITH_CHILDREN */, loc));
node.children.length = 0;
}
return {
props: [
createObjectProperty(createSimpleExpression(`textContent`, true, loc), exp || createSimpleExpression('', true))
],
needRuntime: false
};
};
const V_MODEL_RADIO = Symbol( `vModelRadio` );
const V_MODEL_CHECKBOX = Symbol( `vModelCheckbox` );
const V_MODEL_TEXT = Symbol( `vModelText` );
const V_MODEL_SELECT = Symbol( `vModelSelect` );
const V_MODEL_DYNAMIC = Symbol( `vModelDynamic` );
const V_ON_WITH_MODIFIERS = Symbol( `vOnModifiersGuard` );
const V_ON_WITH_KEYS = Symbol( `vOnKeysGuard` );
registerRuntimeHelpers({
[V_MODEL_RADIO]: `vModelRadio`,
[V_MODEL_CHECKBOX]: `vModelCheckbox`,
[V_MODEL_TEXT]: `vModelText`,
[V_MODEL_SELECT]: `vModelSelect`,
[V_MODEL_DYNAMIC]: `vModelDynamic`,
[V_ON_WITH_MODIFIERS]: `withModifiers`,
[V_ON_WITH_KEYS]: `withKeys`
});
const transformModel$1 = (dir, node, context) => {
const baseResult = transformModel(dir, node, context);
// base transform has errors
if (!baseResult.props.length) {
return baseResult;
}
const { tag, tagType } = node;
if (tagType === 0 /* ELEMENT */) {
if (dir.arg) {
context.onError(createDOMCompilerError(58 /* X_V_MODEL_ARG_ON_ELEMENT */, dir.arg.loc));
}
if (tag === 'input' || tag === 'textarea' || tag === 'select') {
let directiveToUse = V_MODEL_TEXT;
let isInvalidType = false;
if (tag === 'input') {
const type = findProp(node, `type`);
if (type) {
if (type.type === 7 /* DIRECTIVE */) {
// :type="foo"
directiveToUse = V_MODEL_DYNAMIC;
}
else if (type.value) {
switch (type.value.content) {
case 'radio':
directiveToUse = V_MODEL_RADIO;
break;
case 'checkbox':
directiveToUse = V_MODEL_CHECKBOX;
break;
case 'file':
isInvalidType = true;
context.onError(createDOMCompilerError(59 /* X_V_MODEL_ON_FILE_INPUT_ELEMENT */, dir.loc));
break;
}
}
}
}
else if (tag === 'select') {
directiveToUse = V_MODEL_SELECT;
}
// inject runtime directive
// by returning the helper symbol via needRuntime
// the import will replaced a resolveDirective call.
if (!isInvalidType) {
baseResult.needRuntime = context.helper(directiveToUse);
}
}
else {
context.onError(createDOMCompilerError(57 /* X_V_MODEL_ON_INVALID_ELEMENT */, dir.loc));
}
}
return baseResult;
};
const isEventOptionModifier = /*#__PURE__*/ makeMap(`passive,once,capture`);
const isNonKeyModifier = /*#__PURE__*/ makeMap(
// event propagation management
`stop,prevent,self,` +
// system modifiers + exact
`ctrl,shift,alt,meta,exact,` +
// mouse
`left,middle,right`);
const isKeyboardEvent = /*#__PURE__*/ makeMap(`onkeyup,onkeydown,onkeypress`, true);
const transformOn$1 = (dir, node, context) => {
return transformOn(dir, node, context, baseResult => {
const { modifiers } = dir;
if (!modifiers.length)
return baseResult;
let { key, value: handlerExp } = baseResult.props[0];
// modifiers for addEventListener() options, e.g. .passive & .capture
const eventOptionModifiers = modifiers.filter(isEventOptionModifier);
// modifiers that needs runtime guards
const runtimeModifiers = modifiers.filter(m => !isEventOptionModifier(m));
// built-in modifiers that are not keys
const nonKeyModifiers = runtimeModifiers.filter(isNonKeyModifier);
if (nonKeyModifiers.length) {
handlerExp = createCallExpression(context.helper(V_ON_WITH_MODIFIERS), [
handlerExp,
JSON.stringify(nonKeyModifiers)
]);
}
const keyModifiers = runtimeModifiers.filter(m => !isNonKeyModifier(m));
if (keyModifiers.length &&
// if event name is dynamic, always wrap with keys guard
(key.type === 8 /* COMPOUND_EXPRESSION */ ||
!key.isStatic ||
isKeyboardEvent(key.content))) {
handlerExp = createCallExpression(context.helper(V_ON_WITH_KEYS), [
handlerExp,
JSON.stringify(keyModifiers)
]);
}
if (eventOptionModifiers.length) {
handlerExp = createObjectExpression([
createObjectProperty('handler', handlerExp),
createObjectProperty('options', createObjectExpression(eventOptionModifiers.map(modifier => createObjectProperty(modifier, createSimpleExpression('true', false)))))
]);
}
return {
props: [createObjectProperty(key, handlerExp)],
needRuntime: false
};
});
};
function compile(template, options = {}) {
return baseCompile(template, {
...options,
...( parserOptionsMinimal ),
nodeTransforms: [transformStyle, ...(options.nodeTransforms || [])],
directiveTransforms: {
cloak: transformCloak,
html: transformVHtml,
text: transformVText,
model: transformModel$1,
on: transformOn$1,
...(options.directiveTransforms || {})
}
});
}
// global immutability lock
let LOCKED = true;
function lock() {
LOCKED = true;
}
function unlock() {
LOCKED = false;
}
const builtInSymbols = new Set(Object.getOwnPropertyNames(Symbol)
.map(key => Symbol[key])
.filter(isSymbol));
function createGetter(isReadonly, unwrap = true) {
return function get(target, key, receiver) {
let res = Reflect.get(target, key, receiver);
if (isSymbol(key) && builtInSymbols.has(key)) {
return res;
}
if (unwrap && isRef(res)) {
res = res.value;
}
else {
track(target, "get" /* GET */, key);
}
return isObject(res)
? isReadonly
? // need to lazy access readonly and reactive here to avoid
// circular dependency
readonly(res)
: reactive(res)
: res;
};
}
function set(target, key, value, receiver) {
value = toRaw(value);
const oldValue = target[key];
if (isRef(oldValue) && !isRef(value)) {
oldValue.value = value;
return true;
}
const hadKey = hasOwn(target, key);
const result = Reflect.set(target, key, value, receiver);
// don't trigger if target is something up in the prototype chain of original
if (target === toRaw(receiver)) {
/* istanbul ignore else */
{
const extraInfo = { oldValue, newValue: value };
if (!hadKey) {
trigger(target, "add" /* ADD */, key, extraInfo);
}
else if (hasChanged(value, oldValue)) {
trigger(target, "set" /* SET */, key, extraInfo);
}
}
}
return result;
}
function deleteProperty(target, key) {
const hadKey = hasOwn(target, key);
const oldValue = target[key];
const result = Reflect.deleteProperty(target, key);
if (result && hadKey) {
/* istanbul ignore else */
{
trigger(target, "delete" /* DELETE */, key, { oldValue });
}
}
return result;
}
function has(target, key) {
const result = Reflect.has(target, key);
track(target, "has" /* HAS */, key);
return result;
}
function ownKeys(target) {
track(target, "iterate" /* ITERATE */);
return Reflect.ownKeys(target);
}
const mutableHandlers = {
get: createGetter(false),
set,
deleteProperty,
has,
ownKeys
};
const readonlyHandlers = {
get: createGetter(true),
set(target, key, value, receiver) {
if (LOCKED) {
{
console.warn(`Set operation on key "${String(key)}" failed: target is readonly.`, target);
}
return true;
}
else {
return set(target, key, value, receiver);
}
},
deleteProperty(target, key) {
if (LOCKED) {
{
console.warn(`Delete operation on key "${String(key)}" failed: target is readonly.`, target);
}
return true;
}
else {
return deleteProperty(target, key);
}
},
has,
ownKeys
};
// props handlers are special in the sense that it should not unwrap top-level
// refs (in order to allow refs to be explicitly passed down), but should
// retain the reactivity of the normal readonly object.
const readonlyPropsHandlers = {
...readonlyHandlers,
get: createGetter(true, false)
};
const toReactive = (value) => isObject(value) ? reactive(value) : value;
const toReadonly = (value) => isObject(value) ? readonly(value) : value;
const getProto = (v) => Reflect.getPrototypeOf(v);
function get(target, key, wrap) {
target = toRaw(target);
key = toRaw(key);
track(target, "get" /* GET */, key);
return wrap(getProto(target).get.call(target, key));
}
function has$1(key) {
const target = toRaw(this);
key = toRaw(key);
track(target, "has" /* HAS */, key);
return getProto(target).has.call(target, key);
}
function size(target) {
target = toRaw(target);
track(target, "iterate" /* ITERATE */);
return Reflect.get(getProto(target), 'size', target);
}
function add(value) {
value = toRaw(value);
const target = toRaw(this);
const proto = getProto(target);
const hadKey = proto.has.call(target, value);
const result = proto.add.call(target, value);
if (!hadKey) {
/* istanbul ignore else */
{
trigger(target, "add" /* ADD */, value, { newValue: value });
}
}
return result;
}
function set$1(key, value) {
value = toRaw(value);
const target = toRaw(this);
const proto = getProto(target);
const hadKey = proto.has.call(target, key);
const oldValue = proto.get.call(target, key);
const result = proto.set.call(target, key, value);
/* istanbul ignore else */
{
const extraInfo = { oldValue, newValue: value };
if (!hadKey) {
trigger(target, "add" /* ADD */, key, extraInfo);
}
else if (hasChanged(value, oldValue)) {
trigger(target, "set" /* SET */, key, extraInfo);
}
}
return result;
}
function deleteEntry(key) {
const target = toRaw(this);
const proto = getProto(target);
const hadKey = proto.has.call(target, key);
const oldValue = proto.get ? proto.get.call(target, key) : undefined;
// forward the operation before queueing reactions
const result = proto.delete.call(target, key);
if (hadKey) {
/* istanbul ignore else */
{
trigger(target, "delete" /* DELETE */, key, { oldValue });
}
}
return result;
}
function clear() {
const target = toRaw(this);
const hadItems = target.size !== 0;
const oldTarget = target instanceof Map
? new Map(target)
: new Set(target)
;
// forward the operation before queueing reactions
const result = getProto(target).clear.call(target);
if (hadItems) {
/* istanbul ignore else */
{
trigger(target, "clear" /* CLEAR */, void 0, { oldTarget });
}
}
return result;
}
function createForEach(isReadonly) {
return function forEach(callback, thisArg) {
const observed = this;
const target = toRaw(observed);
const wrap = isReadonly ? toReadonly : toReactive;
track(target, "iterate" /* ITERATE */);
// important: create sure the callback is
// 1. invoked with the reactive map as `this` and 3rd arg
// 2. the value received should be a corresponding reactive/readonly.
function wrappedCallback(value, key) {
return callback.call(observed, wrap(value), wrap(key), observed);
}
return getProto(target).forEach.call(target, wrappedCallback, thisArg);
};
}
function createIterableMethod(method, isReadonly) {
return function (...args) {
const target = toRaw(this);
const isPair = method === 'entries' ||
(method === Symbol.iterator && target instanceof Map);
const innerIterator = getProto(target)[method].apply(target, args);
const wrap = isReadonly ? toReadonly : toReactive;
track(target, "iterate" /* ITERATE */);
// return a wrapped iterator which returns observed versions of the
// values emitted from the real iterator
return {
// iterator protocol
next() {
const { value, done } = innerIterator.next();
return done
? { value, done }
: {
value: isPair ? [wrap(value[0]), wrap(value[1])] : wrap(value),
done
};
},
// iterable protocol
[Symbol.iterator]() {
return this;
}
};
};
}
function createReadonlyMethod(method, type) {
return function (...args) {
if (LOCKED) {
{
const key = args[0] ? `on key "${args[0]}" ` : ``;
console.warn(`${capitalize(type)} operation ${key}failed: target is readonly.`, toRaw(this));
}
return type === "delete" /* DELETE */ ? false : this;
}
else {
return method.apply(this, args);
}
};
}
const mutableInstrumentations = {
get(key) {
return get(this, key, toReactive);
},
get size() {
return size(this);
},
has: has$1,
add,
set: set$1,
delete: deleteEntry,
clear,
forEach: createForEach(false)
};
const readonlyInstrumentations = {
get(key) {
return get(this, key, toReadonly);
},
get size() {
return size(this);
},
has: has$1,
add: createReadonlyMethod(add, "add" /* ADD */),
set: createReadonlyMethod(set$1, "set" /* SET */),
delete: createReadonlyMethod(deleteEntry, "delete" /* DELETE */),
clear: createReadonlyMethod(clear, "clear" /* CLEAR */),
forEach: createForEach(true)
};
const iteratorMethods = ['keys', 'values', 'entries', Symbol.iterator];
iteratorMethods.forEach(method => {
mutableInstrumentations[method] = createIterableMethod(method, false);
readonlyInstrumentations[method] = createIterableMethod(method, true);
});
function createInstrumentationGetter(instrumentations) {
return (target, key, receiver) => Reflect.get(hasOwn(instrumentations, key) && key in target
? instrumentations
: target, key, receiver);
}
const mutableCollectionHandlers = {
get: createInstrumentationGetter(mutableInstrumentations)
};
const readonlyCollectionHandlers = {
get: createInstrumentationGetter(readonlyInstrumentations)
};
const targetMap = new WeakMap();
// WeakMaps that store {raw <-> observed} pairs.
const rawToReactive = new WeakMap();
const reactiveToRaw = new WeakMap();
const rawToReadonly = new WeakMap();
const readonlyToRaw = new WeakMap();
// WeakSets for values that are marked readonly or non-reactive during
// observable creation.
const readonlyValues = new WeakSet();
const nonReactiveValues = new WeakSet();
const collectionTypes = new Set([Set, Map, WeakMap, WeakSet]);
const isObservableType = /*#__PURE__*/ makeMap('Object,Array,Map,Set,WeakMap,WeakSet');
const canObserve = (value) => {
return (!value._isVue &&
!value._isVNode &&
isObservableType(toRawType(value)) &&
!nonReactiveValues.has(value));
};
function reactive(target) {
// if trying to observe a readonly proxy, return the readonly version.
if (readonlyToRaw.has(target)) {
return target;
}
// target is explicitly marked as readonly by user
if (readonlyValues.has(target)) {
return readonly(target);
}
return createReactiveObject(target, rawToReactive, reactiveToRaw, mutableHandlers, mutableCollectionHandlers);
}
function readonly(target) {
// value is a mutable observable, retrieve its original and return
// a readonly version.
if (reactiveToRaw.has(target)) {
target = reactiveToRaw.get(target);
}
return createReactiveObject(target, rawToReadonly, readonlyToRaw, readonlyHandlers, readonlyCollectionHandlers);
}
// @internal
// Return a readonly-copy of a props object, without unwrapping refs at the root
// level. This is intended to allow explicitly passing refs as props.
// Technically this should use different global cache from readonly(), but
// since it is only used on internal objects so it's not really necessary.
function readonlyProps(target) {
return createReactiveObject(target, rawToReadonly, readonlyToRaw, readonlyPropsHandlers, readonlyCollectionHandlers);
}
function createReactiveObject(target, toProxy, toRaw, baseHandlers, collectionHandlers) {
if (!isObject(target)) {
{
console.warn(`value cannot be made reactive: ${String(target)}`);
}
return target;
}
// target already has corresponding Proxy
let observed = toProxy.get(target);
if (observed !== void 0) {
return observed;
}
// target is already a Proxy
if (toRaw.has(target)) {
return target;
}
// only a whitelist of value types can be observed.
if (!canObserve(target)) {
return target;
}
const handlers = collectionTypes.has(target.constructor)
? collectionHandlers
: baseHandlers;
observed = new Proxy(target, handlers);
toProxy.set(target, observed);
toRaw.set(observed, target);
if (!targetMap.has(target)) {
targetMap.set(target, new Map());
}
return observed;
}
function isReactive(value) {
return reactiveToRaw.has(value) || readonlyToRaw.has(value);
}
function isReadonly(value) {
return readonlyToRaw.has(value);
}
function toRaw(observed) {
return reactiveToRaw.get(observed) || readonlyToRaw.get(observed) || observed;
}
function markReadonly(value) {
readonlyValues.add(value);
return value;
}
function markNonReactive(value) {
nonReactiveValues.add(value);
return value;
}
const effectStack = [];
const ITERATE_KEY = Symbol('iterate');
function isEffect(fn) {
return fn != null && fn._isEffect === true;
}
function effect(fn, options = EMPTY_OBJ) {
if (isEffect(fn)) {
fn = fn.raw;
}
const effect = createReactiveEffect(fn, options);
if (!options.lazy) {
effect();
}
return effect;
}
function stop(effect) {
if (effect.active) {
cleanup(effect);
if (effect.options.onStop) {
effect.options.onStop();
}
effect.active = false;
}
}
function createReactiveEffect(fn, options) {
const effect = function reactiveEffect(...args) {
return run(effect, fn, args);
};
effect._isEffect = true;
effect.active = true;
effect.raw = fn;
effect.deps = [];
effect.options = options;
return effect;
}
function run(effect, fn, args) {
if (!effect.active) {
return fn(...args);
}
if (!effectStack.includes(effect)) {
cleanup(effect);
try {
effectStack.push(effect);
return fn(...args);
}
finally {
effectStack.pop();
}
}
}
function cleanup(effect) {
const { deps } = effect;
if (deps.length) {
for (let i = 0; i < deps.length; i++) {
deps[i].delete(effect);
}
deps.length = 0;
}
}
let shouldTrack = true;
function pauseTracking() {
shouldTrack = false;
}
function resumeTracking() {
shouldTrack = true;
}
function track(target, type, key) {
if (!shouldTrack || effectStack.length === 0) {
return;
}
const effect = effectStack[effectStack.length - 1];
if (type === "iterate" /* ITERATE */) {
key = ITERATE_KEY;
}
let depsMap = targetMap.get(target);
if (depsMap === void 0) {
targetMap.set(target, (depsMap = new Map()));
}
let dep = depsMap.get(key);
if (dep === void 0) {
depsMap.set(key, (dep = new Set()));
}
if (!dep.has(effect)) {
dep.add(effect);
effect.deps.push(dep);
if ( effect.options.onTrack) {
effect.options.onTrack({
effect,
target,
type,
key
});
}
}
}
function trigger(target, type, key, extraInfo) {
const depsMap = targetMap.get(target);
if (depsMap === void 0) {
// never been tracked
return;
}
const effects = new Set();
const computedRunners = new Set();
if (type === "clear" /* CLEAR */) {
// collection being cleared, trigger all effects for target
depsMap.forEach(dep => {
addRunners(effects, computedRunners, dep);
});
}
else {
// schedule runs for SET | ADD | DELETE
if (key !== void 0) {
addRunners(effects, computedRunners, depsMap.get(key));
}
// also run for iteration key on ADD | DELETE
if (type === "add" /* ADD */ || type === "delete" /* DELETE */) {
const iterationKey = isArray(target) ? 'length' : ITERATE_KEY;
addRunners(effects, computedRunners, depsMap.get(iterationKey));
}
}
const run = (effect) => {
scheduleRun(effect, target, type, key, extraInfo);
};
// Important: computed effects must be run first so that computed getters
// can be invalidated before any normal effects that depend on them are run.
computedRunners.forEach(run);
effects.forEach(run);
}
function addRunners(effects, computedRunners, effectsToAdd) {
if (effectsToAdd !== void 0) {
effectsToAdd.forEach(effect => {
if (effect.options.computed) {
computedRunners.add(effect);
}
else {
effects.add(effect);
}
});
}
}
function scheduleRun(effect, target, type, key, extraInfo) {
if ( effect.options.onTrigger) {
const event = {
effect,
target,
key,
type
};
effect.options.onTrigger(extraInfo ? extend(event, extraInfo) : event);
}
if (effect.options.scheduler !== void 0) {
effect.options.scheduler(effect);
}
else {
effect();
}
}
const convert = (val) => isObject(val) ? reactive(val) : val;
function isRef(r) {
return r ? r._isRef === true : false;
}
function ref(raw) {
if (isRef(raw)) {
return raw;
}
raw = convert(raw);
const r = {
_isRef: true,
get value() {
track(r, "get" /* GET */, 'value');
return raw;
},
set value(newVal) {
raw = convert(newVal);
trigger(r, "set" /* SET */, 'value', { newValue: newVal } );
}
};
return r;
}
function toRefs(object) {
if ( !isReactive(object)) {
console.warn(`toRefs() expects a reactive object but received a plain one.`);
}
const ret = {};
for (const key in object) {
ret[key] = toProxyRef(object, key);
}
return ret;
}
function toProxyRef(object, key) {
return {
_isRef: true,
get value() {
return object[key];
},
set value(newVal) {
object[key] = newVal;
}
};
}
function computed(getterOrOptions) {
let getter;
let setter;
if (isFunction(getterOrOptions)) {
getter = getterOrOptions;
setter = () => {
console.warn('Write operation failed: computed value is readonly');
}
;
}
else {
getter = getterOrOptions.get;
setter = getterOrOptions.set;
}
let dirty = true;
let value;
const runner = effect(getter, {
lazy: true,
// mark effect as computed so that it gets priority during trigger
computed: true,
scheduler: () => {
dirty = true;
}
});
return {
_isRef: true,
// expose effect so computed can be stopped
effect: runner,
get value() {
if (dirty) {
value = runner();
dirty = false;
}
// When computed effects are accessed in a parent effect, the parent
// should track all the dependencies the computed property has tracked.
// This should also apply for chained computed properties.
trackChildRun(runner);
return value;
},
set value(newValue) {
setter(newValue);
}
};
}
function trackChildRun(childRunner) {
if (effectStack.length === 0) {
return;
}
const parentRunner = effectStack[effectStack.length - 1];
for (let i = 0; i < childRunner.deps.length; i++) {
const dep = childRunner.deps[i];
if (!dep.has(parentRunner)) {
dep.add(parentRunner);
parentRunner.deps.push(dep);
}
}
}
const Fragment = Symbol( 'Fragment' );
const Portal = Symbol( 'Portal' );
const Text = Symbol( 'Text' );
const Comment = Symbol( 'Comment' );
// Since v-if and v-for are the two possible ways node structure can dynamically
// change, once we consider v-if branches and each v-for fragment a block, we
// can divide a template into nested blocks, and within each block the node
// structure would be stable. This allows us to skip most children diffing
// and only worry about the dynamic nodes (indicated by patch flags).
const blockStack = [];
let currentBlock = null;
// Open a block.
// This must be called before `createBlock`. It cannot be part of `createBlock`
// because the children of the block are evaluated before `createBlock` itself
// is called. The generated code typically looks like this:
//
// function render() {
// return (openBlock(),createBlock('div', null, [...]))
// }
//
// disableTracking is true when creating a fragment block, since a fragment
// always diffs its children.
function openBlock(disableTracking) {
blockStack.push((currentBlock = disableTracking ? null : []));
}
// Whether we should be tracking dynamic child nodes inside a block.
// Only tracks when this value is > 0
// We are not using a simple boolean because this value may need to be
// incremented/decremented by nested usage of v-once (see below)
let shouldTrack$1 = 1;
// Block tracking sometimes needs to be disabled, for example during the
// creation of a tree that needs to be cached by v-once. The compiler generates
// code like this:
// _cache[1] || (
// setBlockTracking(-1),
// _cache[1] = createVNode(...),
// setBlockTracking(1),
// _cache[1]
// )
function setBlockTracking(value) {
shouldTrack$1 += value;
}
// Create a block root vnode. Takes the same exact arguments as `createVNode`.
// A block root keeps track of dynamic nodes within the block in the
// `dynamicChildren` array.
function createBlock(type, props, children, patchFlag, dynamicProps) {
// avoid a block with patchFlag tracking itself
shouldTrack$1--;
const vnode = createVNode(type, props, children, patchFlag, dynamicProps);
shouldTrack$1++;
// save current block children on the block vnode
vnode.dynamicChildren = currentBlock || EMPTY_ARR;
// close block
blockStack.pop();
currentBlock = blockStack[blockStack.length - 1] || null;
// a block is always going to be patched, so track it as a child of its
// parent block
if (currentBlock !== null) {
currentBlock.push(vnode);
}
return vnode;
}
function isVNode(value) {
return value ? value._isVNode === true : false;
}
function createVNode(type, props = null, children = null, patchFlag = 0, dynamicProps = null) {
// class & style normalization.
if (props !== null) {
// for reactive or proxy objects, we need to clone it to enable mutation.
if (isReactive(props) || SetupProxySymbol in props) {
props = extend({}, props);
}
let { class: klass, style } = props;
if (klass != null && !isString(klass)) {
props.class = normalizeClass(klass);
}
if (style != null) {
// reactive state objects need to be cloned since they are likely to be
// mutated
if (isReactive(style) && !isArray(style)) {
style = extend({}, style);
}
props.style = normalizeStyle(style);
}
}
// encode the vnode type information into a bitmap
const shapeFlag = isString(type)
? 1 /* ELEMENT */
: type.__isSuspense === true
? 64 /* SUSPENSE */
: isObject(type)
? 4 /* STATEFUL_COMPONENT */
: isFunction(type)
? 2 /* FUNCTIONAL_COMPONENT */
: 0;
const vnode = {
_isVNode: true,
type,
props,
key: (props !== null && props.key) || null,
ref: (props !== null && props.ref) || null,
children: null,
component: null,
suspense: null,
dirs: null,
el: null,
anchor: null,
target: null,
shapeFlag,
patchFlag,
dynamicProps,
dynamicChildren: null,
appContext: null
};
normalizeChildren(vnode, children);
// presence of a patch flag indicates this node needs patching on updates.
// component nodes also should always be patched, because even if the
// component doesn't need to update, it needs to persist the instance on to
// the next vnode so that it can be properly unmounted later.
if (shouldTrack$1 > 0 &&
currentBlock !== null &&
(patchFlag > 0 ||
shapeFlag & 4 /* STATEFUL_COMPONENT */ ||
shapeFlag & 2 /* FUNCTIONAL_COMPONENT */)) {
currentBlock.push(vnode);
}
return vnode;
}
function cloneVNode(vnode, extraProps) {
// This is intentionally NOT using spread or extend to avoid the runtime
// key enumeration cost.
return {
_isVNode: true,
type: vnode.type,
props: extraProps
? vnode.props
? mergeProps(vnode.props, extraProps)
: extraProps
: vnode.props,
key: vnode.key,
ref: vnode.ref,
children: vnode.children,
target: vnode.target,
shapeFlag: vnode.shapeFlag,
patchFlag: vnode.patchFlag,
dynamicProps: vnode.dynamicProps,
dynamicChildren: vnode.dynamicChildren,
appContext: vnode.appContext,
dirs: vnode.dirs,
// These should technically only be non-null on mounted VNodes. However,
// they *should* be copied for kept-alive vnodes. So we just always copy
// them since them being non-null during a mount doesn't affect the logic as
// they will simply be overwritten.
component: vnode.component,
suspense: vnode.suspense,
el: vnode.el,
anchor: vnode.anchor
};
}
function createTextVNode(text = ' ', flag = 0) {
return createVNode(Text, null, text, flag);
}
function createCommentVNode(text = '',
// when used as the v-else branch, the comment node must be created as a
// block to ensure correct updates.
asBlock = false) {
return asBlock
? createBlock(Comment, null, text)
: createVNode(Comment, null, text);
}
function normalizeVNode(child) {
if (child == null) {
// empty placeholder
return createVNode(Comment);
}
else if (isArray(child)) {
// fragment
return createVNode(Fragment, null, child);
}
else if (typeof child === 'object') {
// already vnode, this should be the most common since compiled templates
// always produce all-vnode children arrays
return child.el === null ? child : cloneVNode(child);
}
else {
// primitive types
return createVNode(Text, null, child + '');
}
}
function normalizeChildren(vnode, children) {
let type = 0;
if (children == null) {
children = null;
}
else if (isArray(children)) {
type = 16 /* ARRAY_CHILDREN */;
}
else if (typeof children === 'object') {
type = 32 /* SLOTS_CHILDREN */;
}
else if (isFunction(children)) {
children = { default: children };
type = 32 /* SLOTS_CHILDREN */;
}
else {
children = isString(children) ? children : children + '';
type = 8 /* TEXT_CHILDREN */;
}
vnode.children = children;
vnode.shapeFlag |= type;
}
function normalizeStyle(value) {
if (isArray(value)) {
const res = {};
for (let i = 0; i < value.length; i++) {
const normalized = normalizeStyle(value[i]);
if (normalized) {
for (const key in normalized) {
res[key] = normalized[key];
}
}
}
return res;
}
else if (isObject(value)) {
return value;
}
}
function normalizeClass(value) {
let res = '';
if (isString(value)) {
res = value;
}
else if (isArray(value)) {
for (let i = 0; i < value.length; i++) {
res += normalizeClass(value[i]) + ' ';
}
}
else if (isObject(value)) {
for (const name in value) {
if (value[name]) {
res += name + ' ';
}
}
}
return res.trim();
}
const handlersRE = /^on|^vnode/;
function mergeProps(...args) {
const ret = {};
extend(ret, args[0]);
for (let i = 1; i < args.length; i++) {
const toMerge = args[i];
for (const key in toMerge) {
if (key === 'class') {
ret.class = normalizeClass([ret.class, toMerge.class]);
}
else if (key === 'style') {
ret.style = normalizeStyle([ret.style, toMerge.style]);
}
else if (handlersRE.test(key)) {
// on*, vnode*
const existing = ret[key];
ret[key] = existing
? [].concat(existing, toMerge[key])
: toMerge[key];
}
else {
ret[key] = toMerge[key];
}
}
}
return ret;
}
const stack = [];
function pushWarningContext(vnode) {
stack.push(vnode);
}
function popWarningContext() {
stack.pop();
}
function warn(msg, ...args) {
// avoid props formatting or warn handler tracking deps that might be mutated
// during patch, leading to infinite recursion.
pauseTracking();
const instance = stack.length ? stack[stack.length - 1].component : null;
const appWarnHandler = instance && instance.appContext.config.warnHandler;
const trace = getComponentTrace();
if (appWarnHandler) {
callWithErrorHandling(appWarnHandler, instance, 9 /* APP_WARN_HANDLER */, [
msg + args.join(''),
instance && instance.renderProxy,
trace
.map(({ vnode }) => `at <${formatComponentName(vnode)}>`)
.join('\n'),
trace
]);
}
else {
const warnArgs = [`[Vue warn]: ${msg}`, ...args];
if (trace.length &&
// avoid spamming console during tests
!false) {
warnArgs.push(`\n`, ...formatTrace(trace));
}
console.warn(...warnArgs);
}
resumeTracking();
}
function getComponentTrace() {
let currentVNode = stack[stack.length - 1];
if (!currentVNode) {
return [];
}
// we can't just use the stack because it will be incomplete during updates
// that did not start from the root. Re-construct the parent chain using
// instance parent pointers.
const normalizedStack = [];
while (currentVNode) {
const last = normalizedStack[0];
if (last && last.vnode === currentVNode) {
last.recurseCount++;
}
else {
normalizedStack.push({
vnode: currentVNode,
recurseCount: 0
});
}
const parentInstance = currentVNode.component
.parent;
currentVNode = parentInstance && parentInstance.vnode;
}
return normalizedStack;
}
function formatTrace(trace) {
const logs = [];
trace.forEach((entry, i) => {
logs.push(...(i === 0 ? [] : [`\n`]), ...formatTraceEntry(entry));
});
return logs;
}
function formatTraceEntry({ vnode, recurseCount }) {
const postfix = recurseCount > 0 ? `... (${recurseCount} recursive calls)` : ``;
const open = ` at <${formatComponentName(vnode)}`;
const close = `>` + postfix;
const rootLabel = vnode.component.parent == null ? `(Root)` : ``;
return vnode.props
? [open, ...formatProps(vnode.props), close, rootLabel]
: [open + close, rootLabel];
}
const classifyRE = /(?:^|[-_])(\w)/g;
const classify = (str) => str.replace(classifyRE, c => c.toUpperCase()).replace(/[-_]/g, '');
function formatComponentName(vnode, file) {
const Component = vnode.type;
let name = isFunction(Component)
? Component.displayName || Component.name
: Component.name;
if (!name && file) {
const match = file.match(/([^/\\]+)\.vue$/);
if (match) {
name = match[1];
}
}
return name ? classify(name) : 'Anonymous';
}
function formatProps(props) {
const res = [];
for (const key in props) {
res.push(...formatProp(key, props[key]));
}
return res;
}
function formatProp(key, value, raw) {
if (isString(value)) {
value = JSON.stringify(value);
return raw ? value : [`${key}=${value}`];
}
else if (typeof value === 'number' || value == null) {
return raw ? value : [`${key}=${value}`];
}
else if (isRef(value)) {
value = formatProp(key, toRaw(value.value), true);
return raw ? value : [`${key}=Ref<`, value, `>`];
}
else {
value = toRaw(value);
return raw ? value : [`${key}=`, value];
}
}
const ErrorTypeStrings = {
["bc" /* BEFORE_CREATE */]: 'beforeCreate hook',
["c" /* CREATED */]: 'created hook',
["bm" /* BEFORE_MOUNT */]: 'beforeMount hook',
["m" /* MOUNTED */]: 'mounted hook',
["bu" /* BEFORE_UPDATE */]: 'beforeUpdate hook',
["u" /* UPDATED */]: 'updated',
["bum" /* BEFORE_UNMOUNT */]: 'beforeUnmount hook',
["um" /* UNMOUNTED */]: 'unmounted hook',
["a" /* ACTIVATED */]: 'activated hook',
["da" /* DEACTIVATED */]: 'deactivated hook',
["ec" /* ERROR_CAPTURED */]: 'errorCaptured hook',
["rtc" /* RENDER_TRACKED */]: 'renderTracked hook',
["rtg" /* RENDER_TRIGGERED */]: 'renderTriggered hook',
[0 /* SETUP_FUNCTION */]: 'setup function',
[1 /* RENDER_FUNCTION */]: 'render function',
[2 /* WATCH_GETTER */]: 'watcher getter',
[3 /* WATCH_CALLBACK */]: 'watcher callback',
[4 /* WATCH_CLEANUP */]: 'watcher cleanup function',
[5 /* NATIVE_EVENT_HANDLER */]: 'native event handler',
[6 /* COMPONENT_EVENT_HANDLER */]: 'component event handler',
[7 /* DIRECTIVE_HOOK */]: 'directive hook',
[8 /* APP_ERROR_HANDLER */]: 'app errorHandler',
[9 /* APP_WARN_HANDLER */]: 'app warnHandler',
[10 /* FUNCTION_REF */]: 'ref function',
[11 /* SCHEDULER */]: 'scheduler flush. This is likely a Vue internals bug. ' +
'Please open an issue at https://new-issue.vuejs.org/?repo=vuejs/vue'
};
function callWithErrorHandling(fn, instance, type, args) {
let res;
try {
res = args ? fn(...args) : fn();
}
catch (err) {
handleError(err, instance, type);
}
return res;
}
function callWithAsyncErrorHandling(fn, instance, type, args) {
if (isFunction(fn)) {
const res = callWithErrorHandling(fn, instance, type, args);
if (res != null && !res._isVue && isPromise(res)) {
res.catch((err) => {
handleError(err, instance, type);
});
}
return res;
}
for (let i = 0; i < fn.length; i++) {
callWithAsyncErrorHandling(fn[i], instance, type, args);
}
}
function handleError(err, instance, type) {
const contextVNode = instance ? instance.vnode : null;
if (instance) {
let cur = instance.parent;
// the exposed instance is the render proxy to keep it consistent with 2.x
const exposedInstance = instance.renderProxy;
// in production the hook receives only the error code
const errorInfo = ErrorTypeStrings[type] ;
while (cur) {
const errorCapturedHooks = cur.ec;
if (errorCapturedHooks !== null) {
for (let i = 0; i < errorCapturedHooks.length; i++) {
if (errorCapturedHooks[i](err, exposedInstance, errorInfo)) {
return;
}
}
}
cur = cur.parent;
}
// app-level handling
const appErrorHandler = instance.appContext.config.errorHandler;
if (appErrorHandler) {
callWithErrorHandling(appErrorHandler, null, 8 /* APP_ERROR_HANDLER */, [err, exposedInstance, errorInfo]);
return;
}
}
logError(err, type, contextVNode);
}
// Test-only toggle for testing the uhandled warning behavior
let forceRecover = false;
function logError(err, type, contextVNode) {
// default behavior is crash in prod & test, recover in dev.
if ( (forceRecover || !false)) {
const info = ErrorTypeStrings[type];
if (contextVNode) {
pushWarningContext(contextVNode);
}
warn(`Unhandled error${info ? ` during execution of ${info}` : ``}`);
console.error(err);
if (contextVNode) {
popWarningContext();
}
}
else {
throw err;
}
}
const queue = [];
const postFlushCbs = [];
const p = Promise.resolve();
let isFlushing = false;
let isFlushPending = false;
function nextTick(fn) {
return fn ? p.then(fn) : p;
}
function queueJob(job) {
if (!queue.includes(job)) {
queue.push(job);
queueFlush();
}
}
function queuePostFlushCb(cb) {
if (!isArray(cb)) {
postFlushCbs.push(cb);
}
else {
postFlushCbs.push(...cb);
}
queueFlush();
}
function queueFlush() {
if (!isFlushing && !isFlushPending) {
isFlushPending = true;
nextTick(flushJobs);
}
}
const dedupe = (cbs) => [...new Set(cbs)];
function flushPostFlushCbs() {
if (postFlushCbs.length) {
const cbs = dedupe(postFlushCbs);
postFlushCbs.length = 0;
for (let i = 0; i < cbs.length; i++) {
cbs[i]();
}
}
}
const RECURSION_LIMIT = 100;
function flushJobs(seenJobs) {
isFlushPending = false;
isFlushing = true;
let job;
{
seenJobs = seenJobs || new Map();
}
while ((job = queue.shift())) {
{
const seen = seenJobs;
if (!seen.has(job)) {
seen.set(job, 1);
}
else {
const count = seen.get(job);
if (count > RECURSION_LIMIT) {
throw new Error('Maximum recursive updates exceeded. ' +
"You may have code that is mutating state in your component's " +
'render function or updated hook.');
}
else {
seen.set(job, count + 1);
}
}
}
callWithErrorHandling(job, null, 11 /* SCHEDULER */);
}
flushPostFlushCbs();
isFlushing = false;
// some postFlushCb queued jobs!
// keep flushing until it drains.
if (queue.length || postFlushCbs.length) {
flushJobs(seenJobs);
}
}
// mark the current rendering instance for asset resolution (e.g.
// resolveComponent, resolveDirective) during render
let currentRenderingInstance = null;
// dev only flag to track whether $attrs was used during render.
// If $attrs was used during render then the warning for failed attrs
// fallthrough can be suppressed.
let accessedAttrs = false;
function markAttrsAccessed() {
accessedAttrs = true;
}
function renderComponentRoot(instance) {
const { type: Component, vnode, renderProxy, props, slots, attrs, emit } = instance;
let result;
currentRenderingInstance = instance;
{
accessedAttrs = false;
}
try {
if (vnode.shapeFlag & 4 /* STATEFUL_COMPONENT */) {
result = normalizeVNode(instance.render.call(renderProxy));
}
else {
// functional
const render = Component;
const propsToPass = true ? readonlyProps(props) : props;
result = normalizeVNode(render.length > 1
? render(propsToPass, {
attrs,
slots,
emit
})
: render(propsToPass, null /* we know it doesn't need it */));
}
// attr merging
if (Component.props != null &&
Component.inheritAttrs !== false &&
attrs !== EMPTY_OBJ &&
Object.keys(attrs).length) {
if (result.shapeFlag & 1 /* ELEMENT */ ||
result.shapeFlag & 6 /* COMPONENT */) {
result = cloneVNode(result, attrs);
}
else if (true && !accessedAttrs) {
warn(`Extraneous non-props attributes (${Object.keys(attrs).join(',')}) ` +
`were passed to component but could not be automatically inhertied ` +
`because component renders fragment or text root nodes.`);
}
}
}
catch (err) {
handleError(err, instance, 1 /* RENDER_FUNCTION */);
result = createVNode(Comment);
}
currentRenderingInstance = null;
return result;
}
function shouldUpdateComponent(prevVNode, nextVNode, optimized) {
const { props: prevProps, children: prevChildren } = prevVNode;
const { props: nextProps, children: nextChildren, patchFlag } = nextVNode;
if (patchFlag > 0) {
if (patchFlag & 256 /* DYNAMIC_SLOTS */) {
// slot content that references values that might have changed,
// e.g. in a v-for
return true;
}
if (patchFlag & 16 /* FULL_PROPS */) {
// presence of this flag indicates props are always non-null
return hasPropsChanged(prevProps, nextProps);
}
else if (patchFlag & 8 /* PROPS */) {
const dynamicProps = nextVNode.dynamicProps;
for (let i = 0; i < dynamicProps.length; i++) {
const key = dynamicProps[i];
if (nextProps[key] !== prevProps[key]) {
return true;
}
}
}
}
else if (!optimized) {
// this path is only taken by manually written render functions
// so presence of any children leads to a forced update
if (prevChildren != null || nextChildren != null) {
return true;
}
if (prevProps === nextProps) {
return false;
}
if (prevProps === null) {
return nextProps !== null;
}
if (nextProps === null) {
return true;
}
return hasPropsChanged(prevProps, nextProps);
}
return false;
}
function hasPropsChanged(prevProps, nextProps) {
const nextKeys = Object.keys(nextProps);
if (nextKeys.length !== Object.keys(prevProps).length) {
return true;
}
for (let i = 0; i < nextKeys.length; i++) {
const key = nextKeys[i];
if (nextProps[key] !== prevProps[key]) {
return true;
}
}
return false;
}
function updateHOCHostEl({ vnode, parent }, el // HostNode
) {
while (parent && parent.subTree === vnode) {
(vnode = parent.vnode).el = el;
parent = parent.parent;
}
}
// resolve raw VNode data.
// - filter out reserved keys (key, ref, slots)
// - extract class and style into $attrs (to be merged onto child
// component root)
// - for the rest:
// - if has declared props: put declared ones in `props`, the rest in `attrs`
// - else: everything goes in `props`.
function resolveProps(instance, rawProps, _options) {
const hasDeclaredProps = _options != null;
const options = normalizePropsOptions(_options);
if (!rawProps && !hasDeclaredProps) {
return;
}
const props = {};
let attrs = void 0;
// update the instance propsProxy (passed to setup()) to trigger potential
// changes
const propsProxy = instance.propsProxy;
const setProp = propsProxy
? (key, val) => {
props[key] = val;
propsProxy[key] = val;
}
: (key, val) => {
props[key] = val;
};
// allow mutation of propsProxy (which is readonly by default)
unlock();
if (rawProps != null) {
for (const key in rawProps) {
// key, ref are reserved
if (isReservedProp(key))
continue;
// prop option names are camelized during normalization, so to support
// kebab -> camel conversion here we need to camelize the key.
const camelKey = camelize(key);
if (hasDeclaredProps && !hasOwn(options, camelKey)) {
(attrs || (attrs = {}))[key] = rawProps[key];
}
else {
setProp(camelKey, rawProps[key]);
}
}
}
// set default values, cast booleans & run validators
if (hasDeclaredProps) {
for (const key in options) {
let opt = options[key];
if (opt == null)
continue;
const isAbsent = !hasOwn(props, key);
const hasDefault = hasOwn(opt, 'default');
const currentValue = props[key];
// default values
if (hasDefault && currentValue === undefined) {
const defaultValue = opt.default;
setProp(key, isFunction(defaultValue) ? defaultValue() : defaultValue);
}
// boolean casting
if (opt["1" /* shouldCast */]) {
if (isAbsent && !hasDefault) {
setProp(key, false);
}
else if (opt["2" /* shouldCastTrue */] &&
(currentValue === '' || currentValue === hyphenate(key))) {
setProp(key, true);
}
}
// runtime validation
if ( rawProps) {
let rawValue;
if (!(key in rawProps) && hyphenate(key) in rawProps) {
rawValue = rawProps[hyphenate(key)];
}
else {
rawValue = rawProps[key];
}
validateProp(key, toRaw(rawValue), opt, isAbsent);
}
}
}
else {
// if component has no declared props, $attrs === $props
attrs = props;
}
// in case of dynamic props, check if we need to delete keys from
// the props proxy
const { patchFlag } = instance.vnode;
if (propsProxy !== null &&
(patchFlag === 0 || patchFlag & 16 /* FULL_PROPS */)) {
const rawInitialProps = toRaw(propsProxy);
for (const key in rawInitialProps) {
if (!hasOwn(props, key)) {
delete propsProxy[key];
}
}
}
// lock readonly
lock();
instance.props = props;
instance.attrs = options ? attrs || EMPTY_OBJ : props;
}
const normalizationMap = new WeakMap();
function normalizePropsOptions(raw) {
if (!raw) {
return null;
}
if (normalizationMap.has(raw)) {
return normalizationMap.get(raw);
}
const normalized = {};
normalizationMap.set(raw, normalized);
if (isArray(raw)) {
for (let i = 0; i < raw.length; i++) {
if ( !isString(raw[i])) {
warn(`props must be strings when using array syntax.`, raw[i]);
}
const normalizedKey = camelize(raw[i]);
if (normalizedKey[0] !== '$') {
normalized[normalizedKey] = EMPTY_OBJ;
}
else {
warn(`Invalid prop name: "${normalizedKey}" is a reserved property.`);
}
}
}
else {
if ( !isObject(raw)) {
warn(`invalid props options`, raw);
}
for (const key in raw) {
const normalizedKey = camelize(key);
if (normalizedKey[0] !== '$') {
const opt = raw[key];
const prop = (normalized[normalizedKey] =
isArray(opt) || isFunction(opt) ? { type: opt } : opt);
if (prop != null) {
const booleanIndex = getTypeIndex(Boolean, prop.type);
const stringIndex = getTypeIndex(String, prop.type);
prop["1" /* shouldCast */] = booleanIndex > -1;
prop["2" /* shouldCastTrue */] = booleanIndex < stringIndex;
}
}
else {
warn(`Invalid prop name: "${normalizedKey}" is a reserved property.`);
}
}
}
return normalized;
}
// use function string name to check type constructors
// so that it works across vms / iframes.
function getType(ctor) {
const match = ctor && ctor.toString().match(/^\s*function (\w+)/);
return match ? match[1] : '';
}
function isSameType(a, b) {
return getType(a) === getType(b);
}
function getTypeIndex(type, expectedTypes) {
if (isArray(expectedTypes)) {
for (let i = 0, len = expectedTypes.length; i < len; i++) {
if (isSameType(expectedTypes[i], type)) {
return i;
}
}
}
else if (isObject(expectedTypes)) {
return isSameType(expectedTypes, type) ? 0 : -1;
}
return -1;
}
function validateProp(name, value, prop, isAbsent) {
const { type, required, validator } = prop;
// required!
if (required && isAbsent) {
warn('Missing required prop: "' + name + '"');
return;
}
// missing but optional
if (value == null && !prop.required) {
return;
}
// type check
if (type != null && type !== true) {
let isValid = false;
const types = isArray(type) ? type : [type];
const expectedTypes = [];
// value is valid as long as one of the specified types match
for (let i = 0; i < types.length && !isValid; i++) {
const { valid, expectedType } = assertType(value, types[i]);
expectedTypes.push(expectedType || '');
isValid = valid;
}
if (!isValid) {
warn(getInvalidTypeMessage(name, value, expectedTypes));
return;
}
}
// custom validator
if (validator && !validator(value)) {
warn('Invalid prop: custom validator check failed for prop "' + name + '".');
}
}
const isSimpleType = /*#__PURE__*/ makeMap('String,Number,Boolean,Function,Symbol');
function assertType(value, type) {
let valid;
const expectedType = getType(type);
if (isSimpleType(expectedType)) {
const t = typeof value;
valid = t === expectedType.toLowerCase();
// for primitive wrapper objects
if (!valid && t === 'object') {
valid = value instanceof type;
}
}
else if (expectedType === 'Object') {
valid = toRawType(value) === 'Object';
}
else if (expectedType === 'Array') {
valid = isArray(value);
}
else {
valid = value instanceof type;
}
return {
valid,
expectedType
};
}
function getInvalidTypeMessage(name, value, expectedTypes) {
let message = `Invalid prop: type check failed for prop "${name}".` +
` Expected ${expectedTypes.map(capitalize).join(', ')}`;
const expectedType = expectedTypes[0];
const receivedType = toRawType(value);
const expectedValue = styleValue(value, expectedType);
const receivedValue = styleValue(value, receivedType);
// check if we need to specify expected value
if (expectedTypes.length === 1 &&
isExplicable(expectedType) &&
!isBoolean(expectedType, receivedType)) {
message += ` with value ${expectedValue}`;
}
message += `, got ${receivedType} `;
// check if we need to specify received value
if (isExplicable(receivedType)) {
message += `with value ${receivedValue}.`;
}
return message;
}
function styleValue(value, type) {
if (type === 'String') {
return `"${value}"`;
}
else if (type === 'Number') {
return `${Number(value)}`;
}
else {
return `${value}`;
}
}
function isExplicable(type) {
const explicitTypes = ['string', 'number', 'boolean'];
return explicitTypes.some(elem => type.toLowerCase() === elem);
}
function isBoolean(...args) {
return args.some(elem => elem.toLowerCase() === 'boolean');
}
const normalizeSlotValue = (value) => isArray(value)
? value.map(normalizeVNode)
: [normalizeVNode(value)];
const normalizeSlot = (key, rawSlot) => (props) => {
if ( currentInstance != null) {
warn(`Slot "${key}" invoked outside of the render function: ` +
`this will not track dependencies used in the slot. ` +
`Invoke the slot function inside the render function instead.`);
}
return normalizeSlotValue(rawSlot(props));
};
function resolveSlots(instance, children) {
let slots;
if (instance.vnode.shapeFlag & 32 /* SLOTS_CHILDREN */) {
const rawSlots = children;
if (rawSlots._compiled) {
// pre-normalized slots object generated by compiler
slots = children;
}
else {
slots = {};
for (const key in rawSlots) {
const value = rawSlots[key];
if (isFunction(value)) {
slots[key] = normalizeSlot(key, value);
}
else if (value != null) {
{
warn(`Non-function value encountered for slot "${key}". ` +
`Prefer function slots for better performance.`);
}
const normalized = normalizeSlotValue(value);
slots[key] = () => normalized;
}
}
}
}
else if (children !== null) {
// non slot object children (direct value) passed to a component
{
warn(`Non-function value encountered for default slot. ` +
`Prefer function slots for better performance.`);
}
const normalized = normalizeSlotValue(children);
slots = { default: () => normalized };
}
if (slots !== void 0) {
instance.slots = slots;
}
}
/**
Runtime helper for applying directives to a vnode. Example usage:
const comp = resolveComponent('comp')
const foo = resolveDirective('foo')
const bar = resolveDirective('bar')
return withDirectives(h(comp), [
[foo, this.x],
[bar, this.y]
])
*/
const isBuiltInDirective = /*#__PURE__*/ makeMap('bind,cloak,else-if,else,for,html,if,model,on,once,pre,show,slot,text');
function validateDirectiveName(name) {
if (isBuiltInDirective(name)) {
warn('Do not use built-in directive ids as custom directive id: ' + name);
}
}
const directiveToVnodeHooksMap = /*#__PURE__*/ [
'beforeMount',
'mounted',
'beforeUpdate',
'updated',
'beforeUnmount',
'unmounted'
].reduce((map, key) => {
const vnodeKey = `onVnode` + key[0].toUpperCase() + key.slice(1);
const vnodeHook = (vnode, prevVnode) => {
const bindings = vnode.dirs;
const prevBindings = prevVnode ? prevVnode.dirs : EMPTY_ARR;
for (let i = 0; i < bindings.length; i++) {
const binding = bindings[i];
const hook = binding.dir[key];
if (hook != null) {
if (prevVnode != null) {
binding.oldValue = prevBindings[i].value;
}
hook(vnode.el, binding, vnode, prevVnode);
}
}
};
map[key] = [vnodeKey, vnodeHook];
return map;
}, {});
function withDirectives(vnode, directives) {
const internalInstance = currentRenderingInstance;
if (internalInstance === null) {
warn(`withDirectives can only be used inside render functions.`);
return vnode;
}
const instance = internalInstance.renderProxy;
const props = vnode.props || (vnode.props = {});
const bindings = vnode.dirs || (vnode.dirs = new Array(directives.length));
const injected = {};
for (let i = 0; i < directives.length; i++) {
let [dir, value, arg, modifiers = EMPTY_OBJ] = directives[i];
if (isFunction(dir)) {
dir = {
mounted: dir,
updated: dir
};
}
bindings[i] = {
dir,
instance,
value,
oldValue: void 0,
arg,
modifiers
};
// inject onVnodeXXX hooks
for (const key in dir) {
if (!injected[key]) {
const { 0: hookName, 1: hook } = directiveToVnodeHooksMap[key];
const existing = props[hookName];
props[hookName] = existing ? [].concat(existing, hook) : hook;
injected[key] = true;
}
}
}
return vnode;
}
function invokeDirectiveHook(hook, instance, vnode, prevVNode = null) {
callWithAsyncErrorHandling(hook, instance, 7 /* DIRECTIVE_HOOK */, [
vnode,
prevVNode
]);
}
function createAppContext() {
return {
config: {
devtools: true,
performance: false,
isNativeTag: NO,
isCustomElement: NO,
errorHandler: undefined,
warnHandler: undefined
},
mixins: [],
components: {},
directives: {},
provides: {}
};
}
function createAppAPI(render) {
return function createApp() {
const context = createAppContext();
const installedPlugins = new Set();
let isMounted = false;
const app = {
get config() {
return context.config;
},
set config(v) {
{
warn(`app.config cannot be replaced. Modify individual options instead.`);
}
},
use(plugin) {
if (installedPlugins.has(plugin)) {
warn(`Plugin has already been applied to target app.`);
}
else if (isFunction(plugin)) {
installedPlugins.add(plugin);
plugin(app);
}
else if (isFunction(plugin.install)) {
installedPlugins.add(plugin);
plugin.install(app);
}
else {
warn(`A plugin must either be a function or an object with an "install" ` +
`function.`);
}
return app;
},
mixin(mixin) {
if (!context.mixins.includes(mixin)) {
context.mixins.push(mixin);
}
else {
warn('Mixin has already been applied to target app' +
(mixin.name ? `: ${mixin.name}` : ''));
}
return app;
},
component(name, component) {
{
validateComponentName(name, context.config);
}
if (!component) {
return context.components[name];
}
else {
if ( context.components[name]) {
warn(`Component "${name}" has already been registered in target app.`);
}
context.components[name] = component;
return app;
}
},
directive(name, directive) {
{
validateDirectiveName(name);
}
if (!directive) {
return context.directives[name];
}
else {
if ( context.directives[name]) {
warn(`Directive "${name}" has already been registered in target app.`);
}
context.directives[name] = directive;
return app;
}
},
mount(rootComponent, rootContainer, rootProps) {
if (!isMounted) {
const vnode = createVNode(rootComponent, rootProps);
// store app context on the root VNode.
// this will be set on the root instance on initial mount.
vnode.appContext = context;
render(vnode, rootContainer);
isMounted = true;
return vnode.component.renderProxy;
}
else {
warn(`App has already been mounted. Create a new app instance instead.`);
}
},
provide(key, value) {
if ( key in context.provides) {
warn(`App already provides property with key "${key}". ` +
`It will be overwritten with the new value.`);
}
// TypeScript doesn't allow symbols as index type
// https://github.com/Microsoft/TypeScript/issues/24587
context.provides[key] = value;
return app;
}
};
return app;
};
}
// Suspense exposes a component-like API, and is treated like a component
// in the compiler, but internally it's a special built-in type that hooks
// directly into the renderer.
const SuspenseImpl = {
// In order to make Suspense tree-shakable, we need to avoid importing it
// directly in the renderer. The renderer checks for the __isSuspense flag
// on a vnode's type and calls the `process` method, passing in renderer
// internals.
__isSuspense: true,
process(n1, n2, container, anchor, parentComponent, parentSuspense, isSVG, optimized,
// platform-specific impl passed from renderer
rendererInternals) {
if (n1 == null) {
mountSuspense(n2, container, anchor, parentComponent, parentSuspense, isSVG, optimized, rendererInternals);
}
else {
patchSuspense(n1, n2, container, anchor, parentComponent, isSVG, optimized, rendererInternals);
}
}
};
// Force-casted public typing for h and TSX props inference
const Suspense = ( SuspenseImpl
);
function mountSuspense(n2, container, anchor, parentComponent, parentSuspense, isSVG, optimized, rendererInternals) {
const { patch, options: { createElement } } = rendererInternals;
const hiddenContainer = createElement('div');
const suspense = (n2.suspense = createSuspenseBoundary(n2, parentSuspense, parentComponent, container, hiddenContainer, anchor, isSVG, optimized, rendererInternals));
const { content, fallback } = normalizeSuspenseChildren(n2);
suspense.subTree = content;
suspense.fallbackTree = fallback;
// start mounting the content subtree in an off-dom container
patch(null, content, hiddenContainer, null, parentComponent, suspense, isSVG, optimized);
// now check if we have encountered any async deps
if (suspense.deps > 0) {
// mount the fallback tree
patch(null, fallback, container, anchor, parentComponent, null, // fallback tree will not have suspense context
isSVG, optimized);
n2.el = fallback.el;
}
else {
// Suspense has no async deps. Just resolve.
suspense.resolve();
}
}
function patchSuspense(n1, n2, container, anchor, parentComponent, isSVG, optimized, { patch }) {
const suspense = (n2.suspense = n1.suspense);
suspense.vnode = n2;
const { content, fallback } = normalizeSuspenseChildren(n2);
const oldSubTree = suspense.subTree;
const oldFallbackTree = suspense.fallbackTree;
if (!suspense.isResolved) {
patch(oldSubTree, content, suspense.hiddenContainer, null, parentComponent, suspense, isSVG, optimized);
if (suspense.deps > 0) {
// still pending. patch the fallback tree.
patch(oldFallbackTree, fallback, container, anchor, parentComponent, null, // fallback tree will not have suspense context
isSVG, optimized);
n2.el = fallback.el;
}
// If deps somehow becomes 0 after the patch it means the patch caused an
// async dep component to unmount and removed its dep. It will cause the
// suspense to resolve and we don't need to do anything here.
}
else {
// just normal patch inner content as a fragment
patch(oldSubTree, content, container, anchor, parentComponent, suspense, isSVG, optimized);
n2.el = content.el;
}
suspense.subTree = content;
suspense.fallbackTree = fallback;
}
function createSuspenseBoundary(vnode, parent, parentComponent, container, hiddenContainer, anchor, isSVG, optimized, rendererInternals) {
const { patch, move, unmount, next, options: { parentNode } } = rendererInternals;
const suspense = {
vnode,
parent,
parentComponent,
isSVG,
optimized,
container,
hiddenContainer,
anchor,
deps: 0,
subTree: null,
fallbackTree: null,
isResolved: false,
isUnmounted: false,
effects: [],
resolve() {
{
if (suspense.isResolved) {
throw new Error(`resolveSuspense() is called on an already resolved suspense boundary.`);
}
if (suspense.isUnmounted) {
throw new Error(`resolveSuspense() is called on an already unmounted suspense boundary.`);
}
}
const { vnode, subTree, fallbackTree, effects, parentComponent, container } = suspense;
// this is initial anchor on mount
let { anchor } = suspense;
// unmount fallback tree
if (fallbackTree.el) {
// if the fallback tree was mounted, it may have been moved
// as part of a parent suspense. get the latest anchor for insertion
anchor = next(fallbackTree);
unmount(fallbackTree, parentComponent, suspense, true);
}
// move content from off-dom container to actual container
move(subTree, container, anchor);
const el = (vnode.el = subTree.el);
// suspense as the root node of a component...
if (parentComponent && parentComponent.subTree === vnode) {
parentComponent.vnode.el = el;
updateHOCHostEl(parentComponent, el);
}
// check if there is a pending parent suspense
let parent = suspense.parent;
let hasUnresolvedAncestor = false;
while (parent) {
if (!parent.isResolved) {
// found a pending parent suspense, merge buffered post jobs
// into that parent
parent.effects.push(...effects);
hasUnresolvedAncestor = true;
break;
}
parent = parent.parent;
}
// no pending parent suspense, flush all jobs
if (!hasUnresolvedAncestor) {
queuePostFlushCb(effects);
}
suspense.isResolved = true;
// invoke @resolve event
const onResolve = vnode.props && vnode.props.onResolve;
if (isFunction(onResolve)) {
onResolve();
}
},
recede() {
suspense.isResolved = false;
const { vnode, subTree, fallbackTree, parentComponent, container, hiddenContainer, isSVG, optimized } = suspense;
// move content tree back to the off-dom container
const anchor = next(subTree);
move(subTree, hiddenContainer, null);
// remount the fallback tree
patch(null, fallbackTree, container, anchor, parentComponent, null, // fallback tree will not have suspense context
isSVG, optimized);
const el = (vnode.el = fallbackTree.el);
// suspense as the root node of a component...
if (parentComponent && parentComponent.subTree === vnode) {
parentComponent.vnode.el = el;
updateHOCHostEl(parentComponent, el);
}
// invoke @recede event
const onRecede = vnode.props && vnode.props.onRecede;
if (isFunction(onRecede)) {
onRecede();
}
},
move(container, anchor) {
move(suspense.isResolved ? suspense.subTree : suspense.fallbackTree, container, anchor);
suspense.container = container;
},
next() {
return next(suspense.isResolved ? suspense.subTree : suspense.fallbackTree);
},
registerDep(instance, setupRenderEffect) {
// suspense is already resolved, need to recede.
// use queueJob so it's handled synchronously after patching the current
// suspense tree
if (suspense.isResolved) {
queueJob(() => {
suspense.recede();
});
}
suspense.deps++;
instance
.asyncDep.catch(err => {
handleError(err, instance, 0 /* SETUP_FUNCTION */);
})
.then(asyncSetupResult => {
// retry when the setup() promise resolves.
// component may have been unmounted before resolve.
if (instance.isUnmounted || suspense.isUnmounted) {
return;
}
suspense.deps--;
// retry from this component
instance.asyncResolved = true;
const { vnode } = instance;
{
pushWarningContext(vnode);
}
handleSetupResult(instance, asyncSetupResult, suspense);
setupRenderEffect(instance, parentComponent, suspense, vnode,
// component may have been moved before resolve
parentNode(instance.subTree.el), next(instance.subTree), isSVG);
updateHOCHostEl(instance, vnode.el);
{
popWarningContext();
}
if (suspense.deps === 0) {
suspense.resolve();
}
});
},
unmount(parentSuspense, doRemove) {
suspense.isUnmounted = true;
unmount(suspense.subTree, parentComponent, parentSuspense, doRemove);
if (!suspense.isResolved) {
unmount(suspense.fallbackTree, parentComponent, parentSuspense, doRemove);
}
}
};
return suspense;
}
function normalizeSuspenseChildren(vnode) {
const { shapeFlag, children } = vnode;
if (shapeFlag & 32 /* SLOTS_CHILDREN */) {
const { default: d, fallback } = children;
return {
content: normalizeVNode(isFunction(d) ? d() : d),
fallback: normalizeVNode(isFunction(fallback) ? fallback() : fallback)
};
}
else {
return {
content: normalizeVNode(children),
fallback: normalizeVNode(null)
};
}
}
function queueEffectWithSuspense(fn, suspense) {
if (suspense !== null && !suspense.isResolved) {
if (isArray(fn)) {
suspense.effects.push(...fn);
}
else {
suspense.effects.push(fn);
}
}
else {
queuePostFlushCb(fn);
}
}
function createDevEffectOptions(instance) {
return {
scheduler: queueJob,
onTrack: instance.rtc ? e => invokeHooks(instance.rtc, e) : void 0,
onTrigger: instance.rtg ? e => invokeHooks(instance.rtg, e) : void 0
};
}
function isSameType$1(n1, n2) {
return n1.type === n2.type && n1.key === n2.key;
}
function invokeHooks(hooks, arg) {
for (let i = 0; i < hooks.length; i++) {
hooks[i](arg);
}
}
const queuePostRenderEffect = queueEffectWithSuspense
;
/**
* The createRenderer function accepts two generic arguments:
* HostNode and HostElement, corresponding to Node and Element types in the
* host environment. For example, for runtime-dom, HostNode would be the DOM
* `Node` interface and HostElement would be the DOM `Element` interface.
*
* Custom renderers can pass in the platform specific types like this:
*
* ``` js
* const { render, createApp } = createRenderer<Node, Element>({
* patchProp,
* ...nodeOps
* })
* ```
*/
function createRenderer(options) {
const { insert: hostInsert, remove: hostRemove, patchProp: hostPatchProp, createElement: hostCreateElement, createText: hostCreateText, createComment: hostCreateComment, setText: hostSetText, setElementText: hostSetElementText, parentNode: hostParentNode, nextSibling: hostNextSibling, querySelector: hostQuerySelector } = options;
const internals = {
patch,
unmount,
move,
next: getNextHostNode,
options
};
function patch(n1, // null means this is a mount
n2, container, anchor = null, parentComponent = null, parentSuspense = null, isSVG = false, optimized = false) {
// patching & not same type, unmount old tree
if (n1 != null && !isSameType$1(n1, n2)) {
anchor = getNextHostNode(n1);
unmount(n1, parentComponent, parentSuspense, true);
n1 = null;
}
const { type, shapeFlag } = n2;
switch (type) {
case Text:
processText(n1, n2, container, anchor);
break;
case Comment:
processCommentNode(n1, n2, container, anchor);
break;
case Fragment:
processFragment(n1, n2, container, anchor, parentComponent, parentSuspense, isSVG, optimized);
break;
case Portal:
processPortal(n1, n2, container, anchor, parentComponent, parentSuspense, isSVG, optimized);
break;
default:
if (shapeFlag & 1 /* ELEMENT */) {
processElement(n1, n2, container, anchor, parentComponent, parentSuspense, isSVG, optimized);
}
else if (shapeFlag & 6 /* COMPONENT */) {
processComponent(n1, n2, container, anchor, parentComponent, parentSuspense, isSVG, optimized);
}
else if ( shapeFlag & 64 /* SUSPENSE */) {
type.process(n1, n2, container, anchor, parentComponent, parentSuspense, isSVG, optimized, internals);
}
else {
warn('Invalid HostVNode type:', n2.type, `(${typeof n2.type})`);
}
}
}
function processText(n1, n2, container, anchor) {
if (n1 == null) {
hostInsert((n2.el = hostCreateText(n2.children)), container, anchor);
}
else {
const el = (n2.el = n1.el);
if (n2.children !== n1.children) {
hostSetText(el, n2.children);
}
}
}
function processCommentNode(n1, n2, container, anchor) {
if (n1 == null) {
hostInsert((n2.el = hostCreateComment(n2.children || '')), container, anchor);
}
else {
// there's no support for dynamic comments
n2.el = n1.el;
}
}
function processElement(n1, n2, container, anchor, parentComponent, parentSuspense, isSVG, optimized) {
if (n1 == null) {
mountElement(n2, container, anchor, parentComponent, parentSuspense, isSVG, optimized);
}
else {
patchElement(n1, n2, parentComponent, parentSuspense, isSVG, optimized);
}
if (n2.ref !== null && parentComponent !== null) {
setRef(n2.ref, n1 && n1.ref, parentComponent, n2.el);
}
}
function mountElement(vnode, container, anchor, parentComponent, parentSuspense, isSVG, optimized) {
const tag = vnode.type;
isSVG = isSVG || tag === 'svg';
const el = (vnode.el = hostCreateElement(tag, isSVG));
const { props, shapeFlag } = vnode;
if (props != null) {
for (const key in props) {
if (isReservedProp(key))
continue;
hostPatchProp(el, key, props[key], null, isSVG);
}
if (props.onVnodeBeforeMount != null) {
invokeDirectiveHook(props.onVnodeBeforeMount, parentComponent, vnode);
}
}
if (shapeFlag & 8 /* TEXT_CHILDREN */) {
hostSetElementText(el, vnode.children);
}
else if (shapeFlag & 16 /* ARRAY_CHILDREN */) {
mountChildren(vnode.children, el, null, parentComponent, parentSuspense, isSVG, optimized || vnode.dynamicChildren !== null);
}
hostInsert(el, container, anchor);
if (props != null && props.onVnodeMounted != null) {
queuePostRenderEffect(() => {
invokeDirectiveHook(props.onVnodeMounted, parentComponent, vnode);
}, parentSuspense);
}
}
function mountChildren(children, container, anchor, parentComponent, parentSuspense, isSVG, optimized, start = 0) {
for (let i = start; i < children.length; i++) {
const child = optimized
? children[i]
: (children[i] = normalizeVNode(children[i]));
patch(null, child, container, anchor, parentComponent, parentSuspense, isSVG, optimized);
}
}
function patchElement(n1, n2, parentComponent, parentSuspense, isSVG, optimized) {
const el = (n2.el = n1.el);
const { patchFlag, dynamicChildren } = n2;
const oldProps = (n1 && n1.props) || EMPTY_OBJ;
const newProps = n2.props || EMPTY_OBJ;
if (newProps.onVnodeBeforeUpdate != null) {
invokeDirectiveHook(newProps.onVnodeBeforeUpdate, parentComponent, n2, n1);
}
if (patchFlag > 0) {
// the presence of a patchFlag means this element's render code was
// generated by the compiler and can take the fast path.
// in this path old node and new node are guaranteed to have the same shape
// (i.e. at the exact same position in the source template)
if (patchFlag & 16 /* FULL_PROPS */) {
// element props contain dynamic keys, full diff needed
patchProps(el, n2, oldProps, newProps, parentComponent, parentSuspense, isSVG);
}
else {
// class
// this flag is matched when the element has dynamic class bindings.
if (patchFlag & 2 /* CLASS */) {
if (oldProps.class !== newProps.class) {
hostPatchProp(el, 'class', newProps.class, null, isSVG);
}
}
// style
// this flag is matched when the element has dynamic style bindings
if (patchFlag & 4 /* STYLE */) {
hostPatchProp(el, 'style', newProps.style, oldProps.style, isSVG);
}
// props
// This flag is matched when the element has dynamic prop/attr bindings
// other than class and style. The keys of dynamic prop/attrs are saved for
// faster iteration.
// Note dynamic keys like :[foo]="bar" will cause this optimization to
// bail out and go through a full diff because we need to unset the old key
if (patchFlag & 8 /* PROPS */) {
// if the flag is present then dynamicProps must be non-null
const propsToUpdate = n2.dynamicProps;
for (let i = 0; i < propsToUpdate.length; i++) {
const key = propsToUpdate[i];
const prev = oldProps[key];
const next = newProps[key];
if (prev !== next) {
hostPatchProp(el, key, next, prev, isSVG, n1.children, parentComponent, parentSuspense, unmountChildren);
}
}
}
}
// text
// This flag is matched when the element has only dynamic text children.
// this flag is terminal (i.e. skips children diffing).
if (patchFlag & 1 /* TEXT */) {
if (n1.children !== n2.children) {
hostSetElementText(el, n2.children);
}
return; // terminal
}
}
else if (!optimized && dynamicChildren == null) {
// unoptimized, full diff
patchProps(el, n2, oldProps, newProps, parentComponent, parentSuspense, isSVG);
}
if (dynamicChildren != null) {
patchBlockChildren(n1.dynamicChildren, dynamicChildren, el, parentComponent, parentSuspense, isSVG);
}
else if (!optimized) {
// full diff
patchChildren(n1, n2, el, null, parentComponent, parentSuspense, isSVG);
}
if (newProps.onVnodeUpdated != null) {
queuePostRenderEffect(() => {
invokeDirectiveHook(newProps.onVnodeUpdated, parentComponent, n2, n1);
}, parentSuspense);
}
}
// The fast path for blocks.
function patchBlockChildren(oldChildren, newChildren, fallbackContainer, parentComponent, parentSuspense, isSVG) {
for (let i = 0; i < newChildren.length; i++) {
const oldVNode = oldChildren[i];
patch(oldVNode, newChildren[i],
// in the case of a Fragment, we need to provide the actual parent
// of the Fragment itself so it can move its children. In other cases,
// the parent container is not actually used so we just pass the
// block element here to avoid a DOM parentNode call.
oldVNode.type === Fragment
? hostParentNode(oldVNode.el)
: fallbackContainer, null, parentComponent, parentSuspense, isSVG, true);
}
}
function patchProps(el, vnode, oldProps, newProps, parentComponent, parentSuspense, isSVG) {
if (oldProps !== newProps) {
for (const key in newProps) {
if (isReservedProp(key))
continue;
const next = newProps[key];
const prev = oldProps[key];
if (next !== prev) {
hostPatchProp(el, key, next, prev, isSVG, vnode.children, parentComponent, parentSuspense, unmountChildren);
}
}
if (oldProps !== EMPTY_OBJ) {
for (const key in oldProps) {
if (isReservedProp(key))
continue;
if (!(key in newProps)) {
hostPatchProp(el, key, null, null, isSVG, vnode.children, parentComponent, parentSuspense, unmountChildren);
}
}
}
}
}
let devFragmentID = 0;
function processFragment(n1, n2, container, anchor, parentComponent, parentSuspense, isSVG, optimized) {
const fragmentStartAnchor = (n2.el = n1
? n1.el
: hostCreateComment( `fragment-${devFragmentID}-start` ));
const fragmentEndAnchor = (n2.anchor = n1
? n1.anchor
: hostCreateComment( `fragment-${devFragmentID}-end` ));
{
devFragmentID++;
}
if (n1 == null) {
hostInsert(fragmentStartAnchor, container, anchor);
hostInsert(fragmentEndAnchor, container, anchor);
// a fragment can only have array children
// since they are either generated by the compiler, or implicitly created
// from arrays.
mountChildren(n2.children, container, fragmentEndAnchor, parentComponent, parentSuspense, isSVG, optimized);
}
else {
patchChildren(n1, n2, container, fragmentEndAnchor, parentComponent, parentSuspense, isSVG, optimized);
}
}
function processPortal(n1, n2, container, anchor, parentComponent, parentSuspense, isSVG, optimized) {
const targetSelector = n2.props && n2.props.target;
const { patchFlag, shapeFlag, children } = n2;
if (n1 == null) {
const target = (n2.target = isString(targetSelector)
? hostQuerySelector(targetSelector)
: targetSelector);
if (target != null) {
if (shapeFlag & 8 /* TEXT_CHILDREN */) {
hostSetElementText(target, children);
}
else if (shapeFlag & 16 /* ARRAY_CHILDREN */) {
mountChildren(children, target, null, parentComponent, parentSuspense, isSVG, optimized);
}
}
else {
warn('Invalid Portal target on mount:', target, `(${typeof target})`);
}
}
else {
// update content
const target = (n2.target = n1.target);
if (patchFlag === 1 /* TEXT */) {
hostSetElementText(target, children);
}
else if (n2.dynamicChildren) {
// fast path when the portal happens to be a block root
patchBlockChildren(n1.dynamicChildren, n2.dynamicChildren, container, parentComponent, parentSuspense, isSVG);
}
else if (!optimized) {
patchChildren(n1, n2, target, null, parentComponent, parentSuspense, isSVG);
}
// target changed
if (targetSelector !== (n1.props && n1.props.target)) {
const nextTarget = (n2.target = isString(targetSelector)
? hostQuerySelector(targetSelector)
: targetSelector);
if (nextTarget != null) {
// move content
if (shapeFlag & 8 /* TEXT_CHILDREN */) {
hostSetElementText(target, '');
hostSetElementText(nextTarget, children);
}
else if (shapeFlag & 16 /* ARRAY_CHILDREN */) {
for (let i = 0; i < children.length; i++) {
move(children[i], nextTarget, null);
}
}
}
else {
warn('Invalid Portal target on update:', target, `(${typeof target})`);
}
}
}
// insert an empty node as the placeholder for the portal
processCommentNode(n1, n2, container, anchor);
}
function processComponent(n1, n2, container, anchor, parentComponent, parentSuspense, isSVG, optimized) {
if (n1 == null) {
if (n2.shapeFlag & 256 /* COMPONENT_KEPT_ALIVE */) {
parentComponent.sink.activate(n2, container, anchor);
}
else {
mountComponent(n2, container, anchor, parentComponent, parentSuspense, isSVG);
}
}
else {
const instance = (n2.component = n1.component);
if (shouldUpdateComponent(n1, n2, optimized)) {
if (
instance.asyncDep &&
!instance.asyncResolved) {
// async & still pending - just update props and slots
// since the component's reactive effect for render isn't set-up yet
{
pushWarningContext(n2);
}
updateComponentPreRender(instance, n2);
{
popWarningContext();
}
return;
}
else {
// normal update
instance.next = n2;
// instance.update is the reactive effect runner.
instance.update();
}
}
else {
// no update needed. just copy over properties
n2.component = n1.component;
n2.el = n1.el;
}
}
if (n2.ref !== null && parentComponent !== null) {
if ( !(n2.shapeFlag & 4 /* STATEFUL_COMPONENT */)) {
pushWarningContext(n2);
warn(`Functional components do not support "ref" because they do not ` +
`have instances.`);
popWarningContext();
}
setRef(n2.ref, n1 && n1.ref, parentComponent, n2.component.renderProxy);
}
}
function mountComponent(initialVNode, container, anchor, parentComponent, parentSuspense, isSVG) {
const instance = (initialVNode.component = createComponentInstance(initialVNode, parentComponent));
{
pushWarningContext(initialVNode);
}
const Comp = initialVNode.type;
// inject renderer internals for keepAlive
if (Comp.__isKeepAlive) {
const sink = instance.sink;
sink.renderer = internals;
sink.parentSuspense = parentSuspense;
}
// resolve props and slots for setup context
const propsOptions = Comp.props;
resolveProps(instance, initialVNode.props, propsOptions);
resolveSlots(instance, initialVNode.children);
// setup stateful logic
if (initialVNode.shapeFlag & 4 /* STATEFUL_COMPONENT */) {
setupStatefulComponent(instance, parentSuspense);
}
// setup() is async. This component relies on async logic to be resolved
// before proceeding
if ( instance.asyncDep) {
if (!parentSuspense) {
warn('async setup() is used without a suspense boundary!');
return;
}
parentSuspense.registerDep(instance, setupRenderEffect);
// give it a placeholder
const placeholder = (instance.subTree = createVNode(Comment));
processCommentNode(null, placeholder, container, anchor);
initialVNode.el = placeholder.el;
return;
}
setupRenderEffect(instance, parentComponent, parentSuspense, initialVNode, container, anchor, isSVG);
{
popWarningContext();
}
}
function setupRenderEffect(instance, parentComponent, parentSuspense, initialVNode, container, anchor, isSVG) {
// create reactive effect for rendering
let mounted = false;
instance.update = effect(function componentEffect() {
if (!mounted) {
const subTree = (instance.subTree = renderComponentRoot(instance));
// beforeMount hook
if (instance.bm !== null) {
invokeHooks(instance.bm);
}
patch(null, subTree, container, anchor, instance, parentSuspense, isSVG);
initialVNode.el = subTree.el;
// mounted hook
if (instance.m !== null) {
queuePostRenderEffect(instance.m, parentSuspense);
}
// activated hook for keep-alive roots.
if (instance.a !== null &&
instance.vnode.shapeFlag & 128 /* COMPONENT_SHOULD_KEEP_ALIVE */) {
queuePostRenderEffect(instance.a, parentSuspense);
}
mounted = true;
}
else {
// updateComponent
// This is triggered by mutation of component's own state (next: null)
// OR parent calling processComponent (next: HostVNode)
const { next } = instance;
{
pushWarningContext(next || instance.vnode);
}
if (next !== null) {
updateComponentPreRender(instance, next);
}
const prevTree = instance.subTree;
const nextTree = (instance.subTree = renderComponentRoot(instance));
// beforeUpdate hook
if (instance.bu !== null) {
invokeHooks(instance.bu);
}
// reset refs
// only needed if previous patch had refs
if (instance.refs !== EMPTY_OBJ) {
instance.refs = {};
}
patch(prevTree, nextTree,
// parent may have changed if it's in a portal
hostParentNode(prevTree.el),
// anchor may have changed if it's in a fragment
getNextHostNode(prevTree), instance, parentSuspense, isSVG);
instance.vnode.el = nextTree.el;
if (next === null) {
// self-triggered update. In case of HOC, update parent component
// vnode el. HOC is indicated by parent instance's subTree pointing
// to child component's vnode
updateHOCHostEl(instance, nextTree.el);
}
// updated hook
if (instance.u !== null) {
queuePostRenderEffect(instance.u, parentSuspense);
}
{
popWarningContext();
}
}
}, createDevEffectOptions(instance) );
}
function updateComponentPreRender(instance, nextVNode) {
nextVNode.component = instance;
instance.vnode = nextVNode;
instance.next = null;
resolveProps(instance, nextVNode.props, nextVNode.type.props);
resolveSlots(instance, nextVNode.children);
}
function patchChildren(n1, n2, container, anchor, parentComponent, parentSuspense, isSVG, optimized = false) {
const c1 = n1 && n1.children;
const prevShapeFlag = n1 ? n1.shapeFlag : 0;
const c2 = n2.children;
const { patchFlag, shapeFlag } = n2;
if (patchFlag === -1 /* BAIL */) {
optimized = false;
}
// fast path
if (patchFlag > 0) {
if (patchFlag & 64 /* KEYED_FRAGMENT */) {
// this could be either fully-keyed or mixed (some keyed some not)
// presence of patchFlag means children are guaranteed to be arrays
patchKeyedChildren(c1, c2, container, anchor, parentComponent, parentSuspense, isSVG, optimized);
return;
}
else if (patchFlag & 128 /* UNKEYED_FRAGMENT */) {
// unkeyed
patchUnkeyedChildren(c1, c2, container, anchor, parentComponent, parentSuspense, isSVG, optimized);
return;
}
}
// children has 3 possibilities: text, array or no children.
if (shapeFlag & 8 /* TEXT_CHILDREN */) {
// text children fast path
if (prevShapeFlag & 16 /* ARRAY_CHILDREN */) {
unmountChildren(c1, parentComponent, parentSuspense);
}
if (c2 !== c1) {
hostSetElementText(container, c2);
}
}
else {
if (prevShapeFlag & 16 /* ARRAY_CHILDREN */) {
// prev children was array
if (shapeFlag & 16 /* ARRAY_CHILDREN */) {
// two arrays, cannot assume anything, do full diff
patchKeyedChildren(c1, c2, container, anchor, parentComponent, parentSuspense, isSVG, optimized);
}
else {
// no new children, just unmount old
unmountChildren(c1, parentComponent, parentSuspense, true);
}
}
else {
// prev children was text OR null
// new children is array OR null
if (prevShapeFlag & 8 /* TEXT_CHILDREN */) {
hostSetElementText(container, '');
}
// mount new if array
if (shapeFlag & 16 /* ARRAY_CHILDREN */) {
mountChildren(c2, container, anchor, parentComponent, parentSuspense, isSVG, optimized);
}
}
}
}
function patchUnkeyedChildren(c1, c2, container, anchor, parentComponent, parentSuspense, isSVG, optimized) {
c1 = c1 || EMPTY_ARR;
c2 = c2 || EMPTY_ARR;
const oldLength = c1.length;
const newLength = c2.length;
const commonLength = Math.min(oldLength, newLength);
let i;
for (i = 0; i < commonLength; i++) {
const nextChild = optimized
? c2[i]
: (c2[i] = normalizeVNode(c2[i]));
patch(c1[i], nextChild, container, null, parentComponent, parentSuspense, isSVG, optimized);
}
if (oldLength > newLength) {
// remove old
unmountChildren(c1, parentComponent, parentSuspense, true, commonLength);
}
else {
// mount new
mountChildren(c2, container, anchor, parentComponent, parentSuspense, isSVG, optimized, commonLength);
}
}
// can be all-keyed or mixed
function patchKeyedChildren(c1, c2, container, parentAnchor, parentComponent, parentSuspense, isSVG, optimized) {
let i = 0;
const l2 = c2.length;
let e1 = c1.length - 1; // prev ending index
let e2 = l2 - 1; // next ending index
// 1. sync from start
// (a b) c
// (a b) d e
while (i <= e1 && i <= e2) {
const n1 = c1[i];
const n2 = optimized
? c2[i]
: (c2[i] = normalizeVNode(c2[i]));
if (isSameType$1(n1, n2)) {
patch(n1, n2, container, parentAnchor, parentComponent, parentSuspense, isSVG, optimized);
}
else {
break;
}
i++;
}
// 2. sync from end
// a (b c)
// d e (b c)
while (i <= e1 && i <= e2) {
const n1 = c1[e1];
const n2 = optimized
? c2[i]
: (c2[e2] = normalizeVNode(c2[e2]));
if (isSameType$1(n1, n2)) {
patch(n1, n2, container, parentAnchor, parentComponent, parentSuspense, isSVG, optimized);
}
else {
break;
}
e1--;
e2--;
}
// 3. common sequence + mount
// (a b)
// (a b) c
// i = 2, e1 = 1, e2 = 2
// (a b)
// c (a b)
// i = 0, e1 = -1, e2 = 0
if (i > e1) {
if (i <= e2) {
const nextPos = e2 + 1;
const anchor = nextPos < l2 ? c2[nextPos].el : parentAnchor;
while (i <= e2) {
patch(null, optimized ? c2[i] : (c2[i] = normalizeVNode(c2[i])), container, anchor, parentComponent, parentSuspense, isSVG);
i++;
}
}
}
// 4. common sequence + unmount
// (a b) c
// (a b)
// i = 2, e1 = 2, e2 = 1
// a (b c)
// (b c)
// i = 0, e1 = 0, e2 = -1
else if (i > e2) {
while (i <= e1) {
unmount(c1[i], parentComponent, parentSuspense, true);
i++;
}
}
// 5. unknown sequence
// [i ... e1 + 1]: a b [c d e] f g
// [i ... e2 + 1]: a b [e d c h] f g
// i = 2, e1 = 4, e2 = 5
else {
const s1 = i; // prev starting index
const s2 = i; // next starting index
// 5.1 build key:index map for newChildren
const keyToNewIndexMap = new Map();
for (i = s2; i <= e2; i++) {
const nextChild = optimized
? c2[i]
: (c2[i] = normalizeVNode(c2[i]));
if (nextChild.key != null) {
if ( keyToNewIndexMap.has(nextChild.key)) {
warn(`Duplicate keys found during update:`, JSON.stringify(nextChild.key), `Make sure keys are unique.`);
}
keyToNewIndexMap.set(nextChild.key, i);
}
}
// 5.2 loop through old children left to be patched and try to patch
// matching nodes & remove nodes that are no longer present
let j;
let patched = 0;
const toBePatched = e2 - s2 + 1;
let moved = false;
// used to track whether any node has moved
let maxNewIndexSoFar = 0;
// works as Map<newIndex, oldIndex>
// Note that oldIndex is offset by +1
// and oldIndex = 0 is a special value indicating the new node has
// no corresponding old node.
// used for determining longest stable subsequence
const newIndexToOldIndexMap = new Array(toBePatched);
for (i = 0; i < toBePatched; i++)
newIndexToOldIndexMap[i] = 0;
for (i = s1; i <= e1; i++) {
const prevChild = c1[i];
if (patched >= toBePatched) {
// all new children have been patched so this can only be a removal
unmount(prevChild, parentComponent, parentSuspense, true);
continue;
}
let newIndex;
if (prevChild.key != null) {
newIndex = keyToNewIndexMap.get(prevChild.key);
}
else {
// key-less node, try to locate a key-less node of the same type
for (j = s2; j <= e2; j++) {
if (newIndexToOldIndexMap[j - s2] === 0 &&
isSameType$1(prevChild, c2[j])) {
newIndex = j;
break;
}
}
}
if (newIndex === undefined) {
unmount(prevChild, parentComponent, parentSuspense, true);
}
else {
newIndexToOldIndexMap[newIndex - s2] = i + 1;
if (newIndex >= maxNewIndexSoFar) {
maxNewIndexSoFar = newIndex;
}
else {
moved = true;
}
patch(prevChild, c2[newIndex], container, null, parentComponent, parentSuspense, isSVG, optimized);
patched++;
}
}
// 5.3 move and mount
// generate longest stable subsequence only when nodes have moved
const increasingNewIndexSequence = moved
? getSequence(newIndexToOldIndexMap)
: EMPTY_ARR;
j = increasingNewIndexSequence.length - 1;
// looping backwards so that we can use last patched node as anchor
for (i = toBePatched - 1; i >= 0; i--) {
const nextIndex = s2 + i;
const nextChild = c2[nextIndex];
const anchor = nextIndex + 1 < l2
? c2[nextIndex + 1].el
: parentAnchor;
if (newIndexToOldIndexMap[i] === 0) {
// mount new
patch(null, nextChild, container, anchor, parentComponent, parentSuspense, isSVG);
}
else if (moved) {
// move if:
// There is no stable subsequence (e.g. a reverse)
// OR current node is not among the stable sequence
if (j < 0 || i !== increasingNewIndexSequence[j]) {
move(nextChild, container, anchor);
}
else {
j--;
}
}
}
}
}
function move(vnode, container, anchor) {
if (vnode.shapeFlag & 6 /* COMPONENT */) {
move(vnode.component.subTree, container, anchor);
return;
}
if ( vnode.shapeFlag & 64 /* SUSPENSE */) {
vnode.suspense.move(container, anchor);
return;
}
if (vnode.type === Fragment) {
hostInsert(vnode.el, container, anchor);
const children = vnode.children;
for (let i = 0; i < children.length; i++) {
move(children[i], container, anchor);
}
hostInsert(vnode.anchor, container, anchor);
}
else {
hostInsert(vnode.el, container, anchor);
}
}
function unmount(vnode, parentComponent, parentSuspense, doRemove) {
const { props, ref, type, children, dynamicChildren, shapeFlag, anchor } = vnode;
// unset ref
if (ref !== null && parentComponent !== null) {
setRef(ref, null, parentComponent, null);
}
if (shapeFlag & 6 /* COMPONENT */) {
if (shapeFlag & 128 /* COMPONENT_SHOULD_KEEP_ALIVE */) {
parentComponent.sink.deactivate(vnode);
}
else {
unmountComponent(vnode.component, parentSuspense, doRemove);
}
return;
}
if ( shapeFlag & 64 /* SUSPENSE */) {
vnode.suspense.unmount(parentSuspense, doRemove);
return;
}
if (props != null && props.onVnodeBeforeUnmount != null) {
invokeDirectiveHook(props.onVnodeBeforeUnmount, parentComponent, vnode);
}
const shouldRemoveChildren = type === Fragment && doRemove;
if (dynamicChildren != null) {
unmountChildren(dynamicChildren, parentComponent, parentSuspense, shouldRemoveChildren);
}
else if (shapeFlag & 16 /* ARRAY_CHILDREN */) {
unmountChildren(children, parentComponent, parentSuspense, shouldRemoveChildren);
}
if (doRemove) {
hostRemove(vnode.el);
if (anchor != null)
hostRemove(anchor);
}
if (props != null && props.onVnodeUnmounted != null) {
queuePostRenderEffect(() => {
invokeDirectiveHook(props.onVnodeUnmounted, parentComponent, vnode);
}, parentSuspense);
}
}
function unmountComponent(instance, parentSuspense, doRemove) {
const { bum, effects, update, subTree, um, da, isDeactivated } = instance;
// beforeUnmount hook
if (bum !== null) {
invokeHooks(bum);
}
if (effects !== null) {
for (let i = 0; i < effects.length; i++) {
stop(effects[i]);
}
}
// update may be null if a component is unmounted before its async
// setup has resolved.
if (update !== null) {
stop(update);
unmount(subTree, instance, parentSuspense, doRemove);
}
// unmounted hook
if (um !== null) {
queuePostRenderEffect(um, parentSuspense);
}
// deactivated hook
if (da !== null &&
!isDeactivated &&
instance.vnode.shapeFlag & 128 /* COMPONENT_SHOULD_KEEP_ALIVE */) {
queuePostRenderEffect(da, parentSuspense);
}
queuePostFlushCb(() => {
instance.isUnmounted = true;
});
// A component with async dep inside a pending suspense is unmounted before
// its async dep resolves. This should remove the dep from the suspense, and
// cause the suspense to resolve immediately if that was the last dep.
if (
parentSuspense !== null &&
!parentSuspense.isResolved &&
!parentSuspense.isUnmounted &&
instance.asyncDep !== null &&
!instance.asyncResolved) {
parentSuspense.deps--;
if (parentSuspense.deps === 0) {
parentSuspense.resolve();
}
}
}
function unmountChildren(children, parentComponent, parentSuspense, doRemove, start = 0) {
for (let i = start; i < children.length; i++) {
unmount(children[i], parentComponent, parentSuspense, doRemove);
}
}
function getNextHostNode(vnode) {
if (vnode.shapeFlag & 6 /* COMPONENT */) {
return getNextHostNode(vnode.component.subTree);
}
if ( vnode.shapeFlag & 64 /* SUSPENSE */) {
return vnode.suspense.next();
}
return hostNextSibling((vnode.anchor || vnode.el));
}
function setRef(ref, oldRef, parent, value) {
const refs = parent.refs === EMPTY_OBJ ? (parent.refs = {}) : parent.refs;
const renderContext = toRaw(parent.renderContext);
// unset old ref
if (oldRef !== null && oldRef !== ref) {
if (isString(oldRef)) {
refs[oldRef] = null;
const oldSetupRef = renderContext[oldRef];
if (isRef(oldSetupRef)) {
oldSetupRef.value = null;
}
}
else if (isRef(oldRef)) {
oldRef.value = null;
}
}
if (isString(ref)) {
const setupRef = renderContext[ref];
if (isRef(setupRef)) {
setupRef.value = value;
}
refs[ref] = value;
}
else if (isRef(ref)) {
ref.value = value;
}
else if (isFunction(ref)) {
callWithErrorHandling(ref, parent, 10 /* FUNCTION_REF */, [value, refs]);
}
else {
warn('Invalid template ref type:', value, `(${typeof value})`);
}
}
const render = (vnode, container) => {
if (vnode == null) {
if (container._vnode) {
unmount(container._vnode, null, null, true);
}
}
else {
patch(container._vnode || null, vnode, container);
}
flushPostFlushCbs();
container._vnode = vnode;
};
return {
render,
createApp: createAppAPI(render)
};
}
// https://en.wikipedia.org/wiki/Longest_increasing_subsequence
function getSequence(arr) {
const p = arr.slice();
const result = [0];
let i, j, u, v, c;
const len = arr.length;
for (i = 0; i < len; i++) {
const arrI = arr[i];
if (arrI !== 0) {
j = result[result.length - 1];
if (arr[j] < arrI) {
p[i] = j;
result.push(i);
continue;
}
u = 0;
v = result.length - 1;
while (u < v) {
c = ((u + v) / 2) | 0;
if (arr[result[c]] < arrI) {
u = c + 1;
}
else {
v = c;
}
}
if (arrI < arr[result[u]]) {
if (u > 0) {
p[i] = result[u - 1];
}
result[u] = i;
}
}
}
u = result.length;
v = result[u - 1];
while (u-- > 0) {
result[u] = v;
v = p[v];
}
return result;
}
const KeepAliveImpl = {
name: `KeepAlive`,
// Marker for special handling inside the renderer. We are not using a ===
// check directly on KeepAlive in the renderer, because importing it directly
// would prevent it from being tree-shaken.
__isKeepAlive: true,
setup(props, { slots }) {
const cache = new Map();
const keys = new Set();
let current = null;
const instance = getCurrentInstance();
// KeepAlive communicates with the instantiated renderer via the "sink"
// where the renderer passes in platform-specific functions, and the
// KeepAlivei instance expses activcate/decativate implementations.
// The whole point of this is to avoid importing KeepAlive directly in the
// renderer to facilitate tree-shaking.
const sink = instance.sink;
const { renderer: { move, unmount: _unmount, options: { createElement } }, parentSuspense } = sink;
const storageContainer = createElement('div');
sink.activate = (vnode, container, anchor) => {
move(vnode, container, anchor);
queuePostRenderEffect(() => {
const component = vnode.component;
component.isDeactivated = false;
if (component.a !== null) {
invokeHooks(component.a);
}
}, parentSuspense);
};
sink.deactivate = (vnode) => {
move(vnode, storageContainer, null);
queuePostRenderEffect(() => {
const component = vnode.component;
if (component.da !== null) {
invokeHooks(component.da);
}
component.isDeactivated = true;
}, parentSuspense);
};
function unmount(vnode) {
// reset the shapeFlag so it can be properly unmounted
vnode.shapeFlag = 4 /* STATEFUL_COMPONENT */;
_unmount(vnode, instance, parentSuspense);
}
function pruneCache(filter) {
cache.forEach((vnode, key) => {
const name = getName(vnode.type);
if (name && (!filter || !filter(name))) {
pruneCacheEntry(key);
}
});
}
function pruneCacheEntry(key) {
const cached = cache.get(key);
if (!current || cached.type !== current.type) {
unmount(cached);
}
else if (current) {
// current active instance should no longer be kept-alive.
// we can't unmount it now but it might be later, so reset its flag now.
current.shapeFlag = 4 /* STATEFUL_COMPONENT */;
}
cache.delete(key);
keys.delete(key);
}
watch(() => [props.include, props.exclude], ([include, exclude]) => {
include && pruneCache(name => matches(include, name));
exclude && pruneCache(name => matches(exclude, name));
}, { lazy: true });
onBeforeUnmount(() => {
cache.forEach(unmount);
});
return () => {
if (!slots.default) {
return null;
}
const children = slots.default();
let vnode = children[0];
if (children.length > 1) {
{
warn(`KeepAlive should contain exactly one component child.`);
}
current = null;
return children;
}
else if (!isVNode(vnode) ||
!(vnode.shapeFlag & 4 /* STATEFUL_COMPONENT */)) {
current = null;
return vnode;
}
const comp = vnode.type;
const name = getName(comp);
const { include, exclude, max } = props;
if ((include && (!name || !matches(include, name))) ||
(exclude && name && matches(exclude, name))) {
return vnode;
}
const key = vnode.key == null ? comp : vnode.key;
const cached = cache.get(key);
// clone vnode if it's reused because we are going to mutate it
if (vnode.el) {
vnode = cloneVNode(vnode);
}
cache.set(key, vnode);
if (cached) {
// copy over mounted state
vnode.el = cached.el;
vnode.anchor = cached.anchor;
vnode.component = cached.component;
// avoid vnode being mounted as fresh
vnode.shapeFlag |= 256 /* COMPONENT_KEPT_ALIVE */;
// make this key the freshest
keys.delete(key);
keys.add(key);
}
else {
keys.add(key);
// prune oldest entry
if (max && keys.size > parseInt(max, 10)) {
pruneCacheEntry(Array.from(keys)[0]);
}
}
// avoid vnode being unmounted
vnode.shapeFlag |= 128 /* COMPONENT_SHOULD_KEEP_ALIVE */;
current = vnode;
return vnode;
};
}
};
{
KeepAliveImpl.props = {
include: [String, RegExp, Array],
exclude: [String, RegExp, Array],
max: [String, Number]
};
}
// export the public type for h/tsx inference
const KeepAlive = KeepAliveImpl;
function getName(comp) {
return comp.displayName || comp.name;
}
function matches(pattern, name) {
if (isArray(pattern)) {
return pattern.some((p) => matches(p, name));
}
else if (isString(pattern)) {
return pattern.split(',').indexOf(name) > -1;
}
else if (pattern.test) {
return pattern.test(name);
}
/* istanbul ignore next */
return false;
}
function onActivated(hook, target) {
registerKeepAliveHook(hook, "a" /* ACTIVATED */, target);
}
function onDeactivated(hook, target) {
registerKeepAliveHook(hook, "da" /* DEACTIVATED */, target);
}
function registerKeepAliveHook(hook, type, target = currentInstance) {
// cache the deactivate branch check wrapper for injected hooks so the same
// hook can be properly deduped by the scheduler. "__wdc" stands for "with
// deactivation check".
const wrappedHook = hook.__wdc ||
(hook.__wdc = () => {
// only fire the hook if the target instance is NOT in a deactivated branch.
let current = target;
while (current) {
if (current.isDeactivated) {
return;
}
current = current.parent;
}
hook();
});
injectHook(type, wrappedHook, target);
// In addition to registering it on the target instance, we walk up the parent
// chain and register it on all ancestor instances that are keep-alive roots.
// This avoids the need to walk the entire component tree when invoking these
// hooks, and more importantly, avoids the need to track child components in
// arrays.
if (target) {
let current = target.parent;
while (current && current.parent) {
if (current.parent.type === KeepAliveImpl) {
injectToKeepAliveRoot(wrappedHook, type, target, current);
}
current = current.parent;
}
}
}
function injectToKeepAliveRoot(hook, type, target, keepAliveRoot) {
injectHook(type, hook, keepAliveRoot, true /* prepend */);
onUnmounted(() => {
const hooks = keepAliveRoot[type];
hooks.splice(hooks.indexOf(hook), 1);
}, target);
}
function injectHook(type, hook, target = currentInstance, prepend = false) {
if (target) {
const hooks = target[type] || (target[type] = []);
// cache the error handling wrapper for injected hooks so the same hook
// can be properly deduped by the scheduler. "__weh" stands for "with error
// handling".
const wrappedHook = hook.__weh ||
(hook.__weh = (...args) => {
if (target.isUnmounted) {
return;
}
// disable tracking inside all lifecycle hooks
// since they can potentially be called inside effects.
pauseTracking();
// Set currentInstance during hook invocation.
// This assumes the hook does not synchronously trigger other hooks, which
// can only be false when the user does something really funky.
setCurrentInstance(target);
const res = callWithAsyncErrorHandling(hook, target, type, args);
setCurrentInstance(null);
resumeTracking();
return res;
});
if (prepend) {
hooks.unshift(wrappedHook);
}
else {
hooks.push(wrappedHook);
}
}
else {
const apiName = `on${capitalize(ErrorTypeStrings[type].replace(/ hook$/, ''))}`;
warn(`${apiName} is called when there is no active component instance to be ` +
`associated with. ` +
`Lifecycle injection APIs can only be used during execution of setup().` +
( ` If you are using async setup(), make sure to register lifecycle ` +
`hooks before the first await statement.`
));
}
}
const createHook = (lifecycle) => (hook, target = currentInstance) => injectHook(lifecycle, hook, target);
const onBeforeMount = createHook("bm" /* BEFORE_MOUNT */);
const onMounted = createHook("m" /* MOUNTED */);
const onBeforeUpdate = createHook("bu" /* BEFORE_UPDATE */);
const onUpdated = createHook("u" /* UPDATED */);
const onBeforeUnmount = createHook("bum" /* BEFORE_UNMOUNT */);
const onUnmounted = createHook("um" /* UNMOUNTED */);
const onRenderTriggered = createHook("rtg" /* RENDER_TRIGGERED */);
const onRenderTracked = createHook("rtc" /* RENDER_TRACKED */);
const onErrorCaptured = createHook("ec" /* ERROR_CAPTURED */);
const invoke = (fn) => fn();
// implementation
function watch(effectOrSource, cbOrOptions, options) {
if (isFunction(cbOrOptions)) {
// effect callback as 2nd argument - this is a source watcher
return doWatch(effectOrSource, cbOrOptions, options);
}
else {
// 2nd argument is either missing or an options object
// - this is a simple effect watcher
return doWatch(effectOrSource, null, cbOrOptions);
}
}
function doWatch(source, cb, { lazy, deep, flush, onTrack, onTrigger } = EMPTY_OBJ) {
const instance = currentInstance;
const suspense = currentSuspense;
let getter;
if (isArray(source)) {
getter = () => source.map(s => isRef(s)
? s.value
: callWithErrorHandling(s, instance, 2 /* WATCH_GETTER */));
}
else if (isRef(source)) {
getter = () => source.value;
}
else if (cb) {
// getter with cb
getter = () => callWithErrorHandling(source, instance, 2 /* WATCH_GETTER */);
}
else {
// no cb -> simple effect
getter = () => {
if (instance && instance.isUnmounted) {
return;
}
if (cleanup) {
cleanup();
}
return callWithErrorHandling(source, instance, 3 /* WATCH_CALLBACK */, [registerCleanup]);
};
}
if (deep) {
const baseGetter = getter;
getter = () => traverse(baseGetter());
}
let cleanup;
const registerCleanup = (fn) => {
cleanup = runner.options.onStop = () => {
callWithErrorHandling(fn, instance, 4 /* WATCH_CLEANUP */);
};
};
let oldValue = isArray(source) ? [] : undefined;
const applyCb = cb
? () => {
if (instance && instance.isUnmounted) {
return;
}
const newValue = runner();
if (deep || hasChanged(newValue, oldValue)) {
// cleanup before running cb again
if (cleanup) {
cleanup();
}
callWithAsyncErrorHandling(cb, instance, 3 /* WATCH_CALLBACK */, [
newValue,
oldValue,
registerCleanup
]);
oldValue = newValue;
}
}
: void 0;
let scheduler;
if (flush === 'sync') {
scheduler = invoke;
}
else if (flush === 'pre') {
scheduler = job => {
if (!instance || instance.vnode.el != null) {
queueJob(job);
}
else {
// with 'pre' option, the first call must happen before
// the component is mounted so it is called synchronously.
job();
}
};
}
else {
scheduler = job => {
queuePostRenderEffect(job, suspense);
};
}
const runner = effect(getter, {
lazy: true,
// so it runs before component update effects in pre flush mode
computed: true,
onTrack,
onTrigger,
scheduler: applyCb ? () => scheduler(applyCb) : scheduler
});
if (!lazy) {
if (applyCb) {
scheduler(applyCb);
}
else {
scheduler(runner);
}
}
else {
oldValue = runner();
}
recordEffect(runner);
return () => {
stop(runner);
};
}
// this.$watch
function instanceWatch(source, cb, options) {
const ctx = this.renderProxy;
const getter = isString(source) ? () => ctx[source] : source.bind(ctx);
const stop = watch(getter, cb.bind(ctx), options);
onBeforeUnmount(stop, this);
return stop;
}
function traverse(value, seen = new Set()) {
if (!isObject(value) || seen.has(value)) {
return;
}
seen.add(value);
if (isArray(value)) {
for (let i = 0; i < value.length; i++) {
traverse(value[i], seen);
}
}
else if (value instanceof Map) {
value.forEach((v, key) => {
// to register mutation dep for existing keys
traverse(value.get(key), seen);
});
}
else if (value instanceof Set) {
value.forEach(v => {
traverse(v, seen);
});
}
else {
for (const key in value) {
traverse(value[key], seen);
}
}
return value;
}
const publicPropertiesMap = {
$data: 'data',
$props: 'propsProxy',
$attrs: 'attrs',
$slots: 'slots',
$refs: 'refs',
$parent: 'parent',
$root: 'root',
$emit: 'emit',
$options: 'type'
};
const PublicInstanceProxyHandlers = {
get(target, key) {
// fast path for unscopables when using `with` block
if ( key === Symbol.unscopables) {
return;
}
const { renderContext, data, props, propsProxy, accessCache, type, sink } = target;
// This getter gets called for every property access on the render context
// during render and is a major hotspot. The most expensive part of this
// is the multiple hasOwn() calls. It's much faster to do a simple property
// access on a plain object, so we use an accessCache object (with null
// prototype) to memoize what access type a key corresponds to.
const n = accessCache[key];
if (n !== undefined) {
switch (n) {
case 0 /* DATA */:
return data[key];
case 1 /* CONTEXT */:
return renderContext[key];
case 2 /* PROPS */:
return propsProxy[key];
}
}
else if (data !== EMPTY_OBJ && hasOwn(data, key)) {
accessCache[key] = 0 /* DATA */;
return data[key];
}
else if (hasOwn(renderContext, key)) {
accessCache[key] = 1 /* CONTEXT */;
return renderContext[key];
}
else if (hasOwn(props, key)) {
// only cache props access if component has declared (thus stable) props
if (type.props != null) {
accessCache[key] = 2 /* PROPS */;
}
// return the value from propsProxy for ref unwrapping and readonly
return propsProxy[key];
}
else if (key === '$cache') {
return target.renderCache || (target.renderCache = []);
}
else if (key === '$el') {
return target.vnode.el;
}
else if (hasOwn(publicPropertiesMap, key)) {
if ( key === '$attrs') {
markAttrsAccessed();
}
return target[publicPropertiesMap[key]];
}
// methods are only exposed when options are supported
{
switch (key) {
case '$forceUpdate':
return target.update;
case '$nextTick':
return nextTick;
case '$watch':
return instanceWatch.bind(target);
}
}
if (hasOwn(sink, key)) {
return sink[key];
}
else if ( currentRenderingInstance != null) {
warn(`Property ${JSON.stringify(key)} was accessed during render ` +
`but is not defined on instance.`);
}
},
set(target, key, value) {
const { data, renderContext } = target;
if (data !== EMPTY_OBJ && hasOwn(data, key)) {
data[key] = value;
}
else if (hasOwn(renderContext, key)) {
renderContext[key] = value;
}
else if (key[0] === '$' && key.slice(1) in target) {
warn(`Attempting to mutate public property "${key}". ` +
`Properties starting with $ are reserved and readonly.`, target);
return false;
}
else if (key in target.props) {
warn(`Attempting to mutate prop "${key}". Props are readonly.`, target);
return false;
}
else {
target.sink[key] = value;
}
return true;
}
};
{
// this trap is only called in browser-compiled render functions that use
// `with (this) {}`
PublicInstanceProxyHandlers.has = (_, key) => {
return key[0] !== '_' && !isGloballyWhitelisted(key);
};
}
function provide(key, value) {
if (!currentInstance) {
{
warn(`provide() can only be used inside setup().`);
}
}
else {
let provides = currentInstance.provides;
// by default an instance inherits its parent's provides object
// but when it needs to provide values of its own, it creates its
// own provides object using parent provides object as prototype.
// this way in `inject` we can simply look up injections from direct
// parent and let the prototype chain do the work.
const parentProvides = currentInstance.parent && currentInstance.parent.provides;
if (parentProvides === provides) {
provides = currentInstance.provides = Object.create(parentProvides);
}
// TS doesn't allow symbol as index type
provides[key] = value;
}
}
function inject(key, defaultValue) {
// fallback to `currentRenderingInstance` so that this can be called in
// a functional component
const instance = currentInstance || currentRenderingInstance;
if (instance) {
const provides = instance.provides;
if (key in provides) {
// TS doesn't allow symbol as index type
return provides[key];
}
else if (defaultValue !== undefined) {
return defaultValue;
}
else {
warn(`injection "${String(key)}" not found.`);
}
}
else {
warn(`inject() can only be used inside setup() or functional components.`);
}
}
function createDuplicateChecker() {
const cache = Object.create(null);
return (type, key) => {
if (cache[key]) {
warn(`${type} property "${key}" is already defined in ${cache[key]}.`);
}
else {
cache[key] = type;
}
};
}
function applyOptions(instance, options, asMixin = false) {
const renderContext = instance.renderContext === EMPTY_OBJ
? (instance.renderContext = reactive({}))
: instance.renderContext;
const ctx = instance.renderProxy;
const {
// composition
mixins, extends: extendsOptions,
// state
props: propsOptions, data: dataOptions, computed: computedOptions, methods, watch: watchOptions, provide: provideOptions, inject: injectOptions,
// assets
components, directives,
// lifecycle
beforeMount, mounted, beforeUpdate, updated, activated, deactivated, beforeUnmount, unmounted, renderTracked, renderTriggered, errorCaptured } = options;
const globalMixins = instance.appContext.mixins;
// call it only during dev
const checkDuplicateProperties = createDuplicateChecker() ;
// applyOptions is called non-as-mixin once per instance
if (!asMixin) {
callSyncHook('beforeCreate', options, ctx, globalMixins);
// global mixins are applied first
applyMixins(instance, globalMixins);
}
// extending a base component...
if (extendsOptions) {
applyOptions(instance, extendsOptions, true);
}
// local mixins
if (mixins) {
applyMixins(instance, mixins);
}
if ( propsOptions) {
for (const key in propsOptions) {
checkDuplicateProperties("Props" /* PROPS */, key);
}
}
// state options
if (dataOptions) {
const data = isFunction(dataOptions) ? dataOptions.call(ctx) : dataOptions;
if (!isObject(data)) {
warn(`data() should return an object.`);
}
else if (instance.data === EMPTY_OBJ) {
{
for (const key in data) {
checkDuplicateProperties("Data" /* DATA */, key);
}
}
instance.data = reactive(data);
}
else {
// existing data: this is a mixin or extends.
extend(instance.data, data);
}
}
if (computedOptions) {
for (const key in computedOptions) {
const opt = computedOptions[key];
checkDuplicateProperties("Computed" /* COMPUTED */, key);
if (isFunction(opt)) {
renderContext[key] = computed$1(opt.bind(ctx));
}
else {
const { get, set } = opt;
if (isFunction(get)) {
renderContext[key] = computed$1({
get: get.bind(ctx),
set: isFunction(set)
? set.bind(ctx)
: () => {
warn(`Computed property "${key}" was assigned to but it has no setter.`);
}
});
}
else {
warn(`Computed property "${key}" has no getter.`);
}
}
}
}
if (methods) {
for (const key in methods) {
const methodHandler = methods[key];
if (isFunction(methodHandler)) {
checkDuplicateProperties("Methods" /* METHODS */, key);
renderContext[key] = methodHandler.bind(ctx);
}
else {
warn(`Method "${key}" has type "${typeof methodHandler}" in the component definition. ` +
`Did you reference the function correctly?`);
}
}
}
if (watchOptions) {
for (const key in watchOptions) {
createWatcher(watchOptions[key], renderContext, ctx, key);
}
}
if (provideOptions) {
const provides = isFunction(provideOptions)
? provideOptions.call(ctx)
: provideOptions;
for (const key in provides) {
provide(key, provides[key]);
}
}
if (injectOptions) {
if (isArray(injectOptions)) {
for (let i = 0; i < injectOptions.length; i++) {
const key = injectOptions[i];
checkDuplicateProperties("Inject" /* INJECT */, key);
renderContext[key] = inject(key);
}
}
else {
for (const key in injectOptions) {
checkDuplicateProperties("Inject" /* INJECT */, key);
const opt = injectOptions[key];
if (isObject(opt)) {
renderContext[key] = inject(opt.from, opt.default);
}
else {
renderContext[key] = inject(opt);
}
}
}
}
// asset options
if (components) {
extend(instance.components, components);
}
if (directives) {
extend(instance.directives, directives);
}
// lifecycle options
if (!asMixin) {
callSyncHook('created', options, ctx, globalMixins);
}
if (beforeMount) {
onBeforeMount(beforeMount.bind(ctx));
}
if (mounted) {
onMounted(mounted.bind(ctx));
}
if (beforeUpdate) {
onBeforeUpdate(beforeUpdate.bind(ctx));
}
if (updated) {
onUpdated(updated.bind(ctx));
}
if (activated) {
onActivated(activated.bind(ctx));
}
if (deactivated) {
onDeactivated(deactivated.bind(ctx));
}
if (errorCaptured) {
onErrorCaptured(errorCaptured.bind(ctx));
}
if (renderTracked) {
onRenderTracked(renderTracked.bind(ctx));
}
if (renderTriggered) {
onRenderTriggered(renderTriggered.bind(ctx));
}
if (beforeUnmount) {
onBeforeUnmount(beforeUnmount.bind(ctx));
}
if (unmounted) {
onUnmounted(unmounted.bind(ctx));
}
}
function callSyncHook(name, options, ctx, globalMixins) {
callHookFromMixins(name, globalMixins, ctx);
const baseHook = options.extends && options.extends[name];
if (baseHook) {
baseHook.call(ctx);
}
const mixins = options.mixins;
if (mixins) {
callHookFromMixins(name, mixins, ctx);
}
const selfHook = options[name];
if (selfHook) {
selfHook.call(ctx);
}
}
function callHookFromMixins(name, mixins, ctx) {
for (let i = 0; i < mixins.length; i++) {
const fn = mixins[i][name];
if (fn) {
fn.call(ctx);
}
}
}
function applyMixins(instance, mixins) {
for (let i = 0; i < mixins.length; i++) {
applyOptions(instance, mixins[i], true);
}
}
function createWatcher(raw, renderContext, ctx, key) {
const getter = () => ctx[key];
if (isString(raw)) {
const handler = renderContext[raw];
if (isFunction(handler)) {
watch(getter, handler);
}
else {
warn(`Invalid watch handler specified by key "${raw}"`, handler);
}
}
else if (isFunction(raw)) {
watch(getter, raw.bind(ctx));
}
else if (isObject(raw)) {
if (isArray(raw)) {
raw.forEach(r => createWatcher(r, renderContext, ctx, key));
}
else {
watch(getter, raw.handler.bind(ctx), raw);
}
}
else {
warn(`Invalid watch option: "${key}"`);
}
}
const emptyAppContext = createAppContext();
function createComponentInstance(vnode, parent) {
// inherit parent app context - or - if root, adopt from root vnode
const appContext = (parent ? parent.appContext : vnode.appContext) || emptyAppContext;
const instance = {
vnode,
parent,
appContext,
type: vnode.type,
root: null,
next: null,
subTree: null,
update: null,
render: null,
renderProxy: null,
propsProxy: null,
setupContext: null,
effects: null,
provides: parent ? parent.provides : Object.create(appContext.provides),
accessCache: null,
renderCache: null,
// setup context properties
renderContext: EMPTY_OBJ,
data: EMPTY_OBJ,
props: EMPTY_OBJ,
attrs: EMPTY_OBJ,
slots: EMPTY_OBJ,
refs: EMPTY_OBJ,
// per-instance asset storage (mutable during options resolution)
components: Object.create(appContext.components),
directives: Object.create(appContext.directives),
// async dependency management
asyncDep: null,
asyncResult: null,
asyncResolved: false,
// user namespace for storing whatever the user assigns to `this`
// can also be used as a wildcard storage for ad-hoc injections internally
sink: {},
// lifecycle hooks
// not using enums here because it results in computed properties
isUnmounted: false,
isDeactivated: false,
bc: null,
c: null,
bm: null,
m: null,
bu: null,
u: null,
um: null,
bum: null,
da: null,
a: null,
rtg: null,
rtc: null,
ec: null,
emit: (event, ...args) => {
const props = instance.vnode.props || EMPTY_OBJ;
const handler = props[`on${event}`] || props[`on${capitalize(event)}`];
if (handler) {
callWithAsyncErrorHandling(handler, instance, 6 /* COMPONENT_EVENT_HANDLER */, args);
}
}
};
instance.root = parent ? parent.root : instance;
return instance;
}
let currentInstance = null;
let currentSuspense = null;
const getCurrentInstance = () => currentInstance;
const setCurrentInstance = (instance) => {
currentInstance = instance;
};
const isBuiltInTag = /*#__PURE__*/ makeMap('slot,component');
function validateComponentName(name, config) {
const appIsNativeTag = config.isNativeTag || NO;
if (isBuiltInTag(name) || appIsNativeTag(name)) {
warn('Do not use built-in or reserved HTML elements as component id: ' + name);
}
}
function setupStatefulComponent(instance, parentSuspense) {
const Component = instance.type;
{
if (Component.name) {
validateComponentName(Component.name, instance.appContext.config);
}
if (Component.components) {
const names = Object.keys(Component.components);
for (let i = 0; i < names.length; i++) {
validateComponentName(names[i], instance.appContext.config);
}
}
if (Component.directives) {
const names = Object.keys(Component.directives);
for (let i = 0; i < names.length; i++) {
validateDirectiveName(names[i]);
}
}
}
// 0. create render proxy property access cache
instance.accessCache = {};
// 1. create render proxy
instance.renderProxy = new Proxy(instance, PublicInstanceProxyHandlers);
// 2. create props proxy
// the propsProxy is a reactive AND readonly proxy to the actual props.
// it will be updated in resolveProps() on updates before render
const propsProxy = (instance.propsProxy = readonlyProps(instance.props));
// 3. call setup()
const { setup } = Component;
if (setup) {
const setupContext = (instance.setupContext =
setup.length > 1 ? createSetupContext(instance) : null);
currentInstance = instance;
currentSuspense = parentSuspense;
const setupResult = callWithErrorHandling(setup, instance, 0 /* SETUP_FUNCTION */, [propsProxy, setupContext]);
currentInstance = null;
currentSuspense = null;
if (isPromise(setupResult)) {
{
// async setup returned Promise.
// bail here and wait for re-entry.
instance.asyncDep = setupResult;
}
return;
}
else {
handleSetupResult(instance, setupResult, parentSuspense);
}
}
else {
finishComponentSetup(instance, parentSuspense);
}
}
function handleSetupResult(instance, setupResult, parentSuspense) {
if (isFunction(setupResult)) {
// setup returned an inline render function
instance.render = setupResult;
}
else if (isObject(setupResult)) {
if ( isVNode(setupResult)) {
warn(`setup() should not return VNodes directly - ` +
`return a render function instead.`);
}
// setup returned bindings.
// assuming a render function compiled from template is present.
instance.renderContext = reactive(setupResult);
}
else if ( setupResult !== undefined) {
warn(`setup() should return an object. Received: ${setupResult === null ? 'null' : typeof setupResult}`);
}
finishComponentSetup(instance, parentSuspense);
}
let compile$1;
// exported method uses any to avoid d.ts relying on the compiler types.
function registerRuntimeCompiler(_compile) {
compile$1 = _compile;
}
function finishComponentSetup(instance, parentSuspense) {
const Component = instance.type;
if (!instance.render) {
if ( Component.template && !Component.render) {
// true ensures `compile` is provided
Component.render = compile$1(Component.template, {
isCustomElement: instance.appContext.config.isCustomElement || NO,
onError(err) {
{
const message = `Template compilation error: ${err.message}`;
const codeFrame = err.loc &&
generateCodeFrame(Component.template, err.loc.start.offset, err.loc.end.offset);
warn(codeFrame ? `${message}\n${codeFrame}` : message);
}
}
});
}
if ( !Component.render) {
/* istanbul ignore if */
{
warn(`Component is missing${ ` template or` } render function.`);
}
}
instance.render = (Component.render || NOOP);
}
// support for 2.x options
{
currentInstance = instance;
currentSuspense = parentSuspense;
applyOptions(instance, Component);
currentInstance = null;
currentSuspense = null;
}
if (instance.renderContext === EMPTY_OBJ) {
instance.renderContext = reactive({});
}
}
// used to identify a setup context proxy
const SetupProxySymbol = Symbol();
const SetupProxyHandlers = {};
['attrs', 'slots'].forEach((type) => {
SetupProxyHandlers[type] = {
get: (instance, key) => instance[type][key],
has: (instance, key) => key === SetupProxySymbol || key in instance[type],
ownKeys: instance => Reflect.ownKeys(instance[type]),
// this is necessary for ownKeys to work properly
getOwnPropertyDescriptor: (instance, key) => Reflect.getOwnPropertyDescriptor(instance[type], key),
set: () => false,
deleteProperty: () => false
};
});
function createSetupContext(instance) {
const context = {
// attrs & slots are non-reactive, but they need to always expose
// the latest values (instance.xxx may get replaced during updates) so we
// need to expose them through a proxy
attrs: new Proxy(instance, SetupProxyHandlers.attrs),
slots: new Proxy(instance, SetupProxyHandlers.slots),
emit: instance.emit
};
return Object.freeze(context) ;
}
// record effects created during a component's setup() so that they can be
// stopped when the component unmounts
function recordEffect(effect) {
if (currentInstance) {
(currentInstance.effects || (currentInstance.effects = [])).push(effect);
}
}
function computed$1(getterOrOptions) {
const c = computed(getterOrOptions);
recordEffect(c.effect);
return c;
}
// implementation, close to no-op
function createComponent(options) {
return isFunction(options) ? { setup: options } : options;
}
// Actual implementation
function h(type, propsOrChildren, children) {
if (arguments.length === 2) {
if (isObject(propsOrChildren) && !isArray(propsOrChildren)) {
// single vnode without props
if (isVNode(propsOrChildren)) {
return createVNode(type, null, [propsOrChildren]);
}
// props without children
return createVNode(type, propsOrChildren);
}
else {
// omit props
return createVNode(type, null, propsOrChildren);
}
}
else {
if (isVNode(children)) {
children = [children];
}
return createVNode(type, propsOrChildren, children);
}
}
// For runtime consumption
const PublicShapeFlags = {
ELEMENT: 1 /* ELEMENT */,
FUNCTIONAL_COMPONENT: 2 /* FUNCTIONAL_COMPONENT */,
STATEFUL_COMPONENT: 4 /* STATEFUL_COMPONENT */,
TEXT_CHILDREN: 8 /* TEXT_CHILDREN */,
ARRAY_CHILDREN: 16 /* ARRAY_CHILDREN */,
SLOTS_CHILDREN: 32 /* SLOTS_CHILDREN */,
SUSPENSE: 64 /* SUSPENSE */,
COMPONENT_SHOULD_KEEP_ALIVE: 128 /* COMPONENT_SHOULD_KEEP_ALIVE */,
COMPONENT_KEPT_ALIVE: 256 /* COMPONENT_KEPT_ALIVE */,
COMPONENT: 6 /* COMPONENT */
};
function resolveComponent(name) {
return resolveAsset('components', name);
}
function resolveDynamicComponent(component) {
if (!component)
return;
if (isString(component)) {
return resolveAsset('components', component);
}
else if (isFunction(component) || isObject(component)) {
return component;
}
}
function resolveDirective(name) {
return resolveAsset('directives', name);
}
function resolveAsset(type, name) {
const instance = currentRenderingInstance || currentInstance;
if (instance) {
let camelized;
const registry = instance[type];
const res = registry[name] ||
registry[(camelized = camelize(name))] ||
registry[capitalize(camelized)];
if ( !res) {
warn(`Failed to resolve ${type.slice(0, -1)}: ${name}`);
}
return res;
}
else {
warn(`resolve${capitalize(type.slice(0, -1))} ` +
`can only be used in render() or setup().`);
}
}
function renderList(source, renderItem) {
let ret;
if (isArray(source) || isString(source)) {
ret = new Array(source.length);
for (let i = 0, l = source.length; i < l; i++) {
ret[i] = renderItem(source[i], i);
}
}
else if (typeof source === 'number') {
ret = new Array(source);
for (let i = 0; i < source; i++) {
ret[i] = renderItem(i + 1, i);
}
}
else if (isObject(source)) {
if (source[Symbol.iterator]) {
ret = Array.from(source, renderItem);
}
else {
const keys = Object.keys(source);
ret = new Array(keys.length);
for (let i = 0, l = keys.length; i < l; i++) {
const key = keys[i];
ret[i] = renderItem(source[key], key, i);
}
}
}
return ret;
}
// for converting {{ interpolation }} values to displayed strings.
function toString(val) {
return val == null
? ''
: isArray(val) || (isPlainObject(val) && val.toString === objectToString)
? JSON.stringify(val, null, 2)
: String(val);
}
// For prefixing keys in v-on="obj" with "on"
function toHandlers(obj) {
const ret = {};
if ( !isObject(obj)) {
warn(`v-on with no argument expects an object value.`);
return ret;
}
for (const key in obj) {
ret[`on${key}`] = obj[key];
}
return ret;
}
function renderSlot(slots, name, props = {},
// this is not a user-facing function, so the fallback is always generated by
// the compiler and guaranteed to be an array
fallback) {
const slot = slots[name];
return (openBlock(),
createBlock(Fragment, { key: props.key }, slot ? slot(props) : fallback || [], slots._compiled ? 0 : -1 /* BAIL */));
}
function createSlots(slots, dynamicSlots) {
for (let i = 0; i < dynamicSlots.length; i++) {
const slot = dynamicSlots[i];
// array of dynamic slot generated by <template v-for="..." #[...]>
if (isArray(slot)) {
for (let j = 0; j < slot.length; j++) {
slots[slot[j].name] = slot[j].fn;
}
}
else {
// conditional single slot generated by <template v-if="..." #foo>
slots[slot.name] = slot.fn;
}
}
return slots;
}
// Public API ------------------------------------------------------------------
const version = "3.0.0-alpha.1";
const PatchFlags = PublicPatchFlags;
const capitalize$1 = capitalize;
const camelize$1 = camelize;
const doc = document;
const svgNS = 'http://www.w3.org/2000/svg';
const nodeOps = {
insert: (child, parent, anchor) => {
if (anchor != null) {
parent.insertBefore(child, anchor);
}
else {
parent.appendChild(child);
}
},
remove: (child) => {
const parent = child.parentNode;
if (parent != null) {
parent.removeChild(child);
}
},
createElement: (tag, isSVG) => isSVG ? doc.createElementNS(svgNS, tag) : doc.createElement(tag),
createText: (text) => doc.createTextNode(text),
createComment: (text) => doc.createComment(text),
setText: (node, text) => {
node.nodeValue = text;
},
setElementText: (el, text) => {
el.textContent = text;
},
parentNode: (node) => node.parentNode,
nextSibling: (node) => node.nextSibling,
querySelector: (selector) => doc.querySelector(selector)
};
// compiler should normalize class + :class bindings on the same element
// into a single binding ['staticClass', dynamic]
function patchClass(el, value, isSVG) {
// directly setting className should be faster than setAttribute in theory
if (isSVG) {
el.setAttribute('class', value);
}
else {
el.className = value;
}
}
function patchStyle(el, prev, next) {
const style = el.style;
if (!next) {
el.removeAttribute('style');
}
else if (isString(next)) {
style.cssText = next;
}
else {
for (const key in next) {
setStyle(style, key, next[key]);
}
if (prev && !isString(prev)) {
for (const key in prev) {
if (!next[key]) {
setStyle(style, key, '');
}
}
}
}
}
const importantRE = /\s*!important$/;
function setStyle(style, name, val) {
if (name.startsWith('--')) {
// custom property definition
style.setProperty(name, val);
}
else {
const prefixed = autoPrefix(style, name);
if (importantRE.test(val)) {
// !important
style.setProperty(hyphenate(prefixed), val.replace(importantRE, ''), 'important');
}
else {
style[prefixed] = val;
}
}
}
const prefixes = ['Webkit', 'Moz', 'ms'];
const prefixCache = {};
function autoPrefix(style, rawName) {
const cached = prefixCache[rawName];
if (cached) {
return cached;
}
let name = camelize$1(rawName);
if (name !== 'filter' && name in style) {
return (prefixCache[rawName] = name);
}
name = capitalize(name);
for (let i = 0; i < prefixes.length; i++) {
const prefixed = prefixes[i] + name;
if (prefixed in style) {
return (prefixCache[rawName] = prefixed);
}
}
return rawName;
}
function patchAttr(el, key, value) {
if (value == null) {
el.removeAttribute(key);
}
else {
el.setAttribute(key, value);
}
}
function patchDOMProp(el, key, value,
// the following args are passed only due to potential innerHTML/textContent
// overriding existing VNodes, in which case the old tree must be properly
// unmounted.
prevChildren, parentComponent, parentSuspense, unmountChildren) {
if ((key === 'innerHTML' || key === 'textContent') && prevChildren != null) {
unmountChildren(prevChildren, parentComponent, parentSuspense);
}
if (key === 'value' && el.tagName !== 'PROGRESS') {
// store value as _value as well since
// non-string values will be stringified.
el._value = value;
}
if (value === '' && typeof el[key] === 'boolean') {
// e.g. <select multiple> compiles to { multiple: '' }
el[key] = true;
}
else {
el[key] = value == null ? '' : value;
}
}
// Async edge case fix requires storing an event listener's attach timestamp.
let _getNow = Date.now;
// Determine what event timestamp the browser is using. Annoyingly, the
// timestamp can either be hi-res ( relative to page load) or low-res
// (relative to UNIX epoch), so in order to compare time we have to use the
// same timestamp type when saving the flush timestamp.
if (typeof document !== 'undefined' &&
_getNow() > document.createEvent('Event').timeStamp) {
// if the low-res timestamp which is bigger than the event timestamp
// (which is evaluated AFTER) it means the event is using a hi-res timestamp,
// and we need to use the hi-res version for event listeners as well.
_getNow = () => performance.now();
}
// To avoid the overhead of repeatedly calling performance.now(), we cache
// and use the same timestamp for all event listeners attached in the same tick.
let cachedNow = 0;
const p$1 = Promise.resolve();
const reset = () => {
cachedNow = 0;
};
const getNow = () => cachedNow || (p$1.then(reset), (cachedNow = _getNow()));
function addEventListener(el, event, handler, options) {
el.addEventListener(event, handler, options);
}
function removeEventListener(el, event, handler, options) {
el.removeEventListener(event, handler, options);
}
function patchEvent(el, name, prevValue, nextValue, instance = null) {
const prevOptions = prevValue && 'options' in prevValue && prevValue.options;
const nextOptions = nextValue && 'options' in nextValue && nextValue.options;
const invoker = prevValue && prevValue.invoker;
const value = nextValue && 'handler' in nextValue ? nextValue.handler : nextValue;
if (prevOptions || nextOptions) {
const prev = prevOptions || EMPTY_OBJ;
const next = nextOptions || EMPTY_OBJ;
if (prev.capture !== next.capture ||
prev.passive !== next.passive ||
prev.once !== next.once) {
if (invoker) {
removeEventListener(el, name, invoker, prev);
}
if (nextValue && value) {
const invoker = createInvoker(value, instance);
nextValue.invoker = invoker;
addEventListener(el, name, invoker, next);
}
return;
}
}
if (nextValue && value) {
if (invoker) {
prevValue.invoker = null;
invoker.value = value;
nextValue.invoker = invoker;
invoker.lastUpdated = getNow();
}
else {
addEventListener(el, name, createInvoker(value, instance), nextOptions || void 0);
}
}
else if (invoker) {
removeEventListener(el, name, invoker, prevOptions || void 0);
}
}
function createInvoker(initialValue, instance) {
const invoker = (e) => {
// async edge case #6566: inner click event triggers patch, event handler
// attached to outer element during patch, and triggered again. This
// happens because browsers fire microtask ticks between event propagation.
// the solution is simple: we save the timestamp when a handler is attached,
// and the handler would only fire if the event passed to it was fired
// AFTER it was attached.
if (e.timeStamp >= invoker.lastUpdated - 1) {
callWithAsyncErrorHandling(invoker.value, instance, 5 /* NATIVE_EVENT_HANDLER */, [e]);
}
};
invoker.value = initialValue;
initialValue.invoker = invoker;
invoker.lastUpdated = getNow();
return invoker;
}
function patchProp(el, key, nextValue, prevValue, isSVG, prevChildren, parentComponent, parentSuspense, unmountChildren) {
switch (key) {
// special
case 'class':
patchClass(el, nextValue, isSVG);
break;
case 'style':
patchStyle(el, prevValue, nextValue);
break;
case 'modelValue':
case 'onUpdate:modelValue':
// Do nothing. This is handled by v-model directives.
break;
default:
if (isOn(key)) {
patchEvent(el, key.slice(2).toLowerCase(), prevValue, nextValue, parentComponent);
}
else if (!isSVG && key in el) {
patchDOMProp(el, key, nextValue, prevChildren, parentComponent, parentSuspense, unmountChildren);
}
else {
patchAttr(el, key, nextValue);
}
break;
}
}
const getModelAssigner = (vnode) => vnode.props['onUpdate:modelValue'];
function onCompositionStart(e) {
e.target.composing = true;
}
function onCompositionEnd(e) {
const target = e.target;
if (target.composing) {
target.composing = false;
trigger$1(target, 'input');
}
}
function trigger$1(el, type) {
const e = document.createEvent('HTMLEvents');
e.initEvent(type, true, true);
el.dispatchEvent(e);
}
function toNumber(val) {
const n = parseFloat(val);
return isNaN(n) ? val : n;
}
// We are exporting the v-model runtime directly as vnode hooks so that it can
// be tree-shaken in case v-model is never used.
const vModelText = {
beforeMount(el, { value, modifiers: { lazy, trim, number } }, vnode) {
el.value = value;
const assign = getModelAssigner(vnode);
const castToNumber = number || el.type === 'number';
addEventListener(el, lazy ? 'change' : 'input', () => {
let domValue = el.value;
if (trim) {
domValue = domValue.trim();
}
else if (castToNumber) {
domValue = toNumber(domValue);
}
assign(domValue);
});
if (trim) {
addEventListener(el, 'change', () => {
el.value = el.value.trim();
});
}
if (!lazy) {
addEventListener(el, 'compositionstart', onCompositionStart);
addEventListener(el, 'compositionend', onCompositionEnd);
// Safari < 10.2 & UIWebView doesn't fire compositionend when
// switching focus before confirming composition choice
// this also fixes the issue where some browsers e.g. iOS Chrome
// fires "change" instead of "input" on autocomplete.
addEventListener(el, 'change', onCompositionEnd);
}
},
beforeUpdate(el, { value, oldValue, modifiers: { trim, number } }) {
if (value === oldValue) {
return;
}
if (document.activeElement === el) {
if (trim && el.value.trim() === value) {
return;
}
if ((number || el.type === 'number') && toNumber(el.value) === value) {
return;
}
}
el.value = value;
}
};
const vModelCheckbox = {
beforeMount(el, binding, vnode) {
setChecked(el, binding, vnode);
const assign = getModelAssigner(vnode);
addEventListener(el, 'change', () => {
const modelValue = el._modelValue;
const elementValue = getValue(el);
const checked = el.checked;
if (isArray(modelValue)) {
const index = looseIndexOf(modelValue, elementValue);
const found = index !== -1;
if (checked && !found) {
assign(modelValue.concat(elementValue));
}
else if (!checked && found) {
const filtered = [...modelValue];
filtered.splice(index, 1);
assign(filtered);
}
}
else {
assign(checked);
}
});
},
beforeUpdate: setChecked
};
function setChecked(el, { value, oldValue }, vnode) {
el._modelValue = value;
if (isArray(value)) {
el.checked = looseIndexOf(value, vnode.props.value) > -1;
}
else if (value !== oldValue) {
el.checked = !!value;
}
}
const vModelRadio = {
beforeMount(el, { value }, vnode) {
el.checked = looseEqual(value, vnode.props.value);
const assign = getModelAssigner(vnode);
addEventListener(el, 'change', () => {
assign(getValue(el));
});
},
beforeUpdate(el, { value, oldValue }, vnode) {
if (value !== oldValue) {
el.checked = looseEqual(value, vnode.props.value);
}
}
};
const vModelSelect = {
// use mounted & updated because <select> relies on its children <option>s.
mounted(el, { value }, vnode) {
setSelected(el, value);
const assign = getModelAssigner(vnode);
addEventListener(el, 'change', () => {
const selectedVal = Array.prototype.filter
.call(el.options, (o) => o.selected)
.map(getValue);
assign(el.multiple ? selectedVal : selectedVal[0]);
});
},
updated(el, { value }) {
setSelected(el, value);
}
};
function setSelected(el, value) {
const isMultiple = el.multiple;
if (isMultiple && !isArray(value)) {
warn(`<select multiple v-model> expects an Array value for its binding, ` +
`but got ${Object.prototype.toString.call(value).slice(8, -1)}.`);
return;
}
for (let i = 0, l = el.options.length; i < l; i++) {
const option = el.options[i];
const optionValue = getValue(option);
if (isMultiple) {
option.selected = looseIndexOf(value, optionValue) > -1;
}
else {
if (looseEqual(getValue(option), value)) {
el.selectedIndex = i;
return;
}
}
}
if (!isMultiple) {
el.selectedIndex = -1;
}
}
function looseEqual(a, b) {
if (a === b)
return true;
const isObjectA = isObject(a);
const isObjectB = isObject(b);
if (isObjectA && isObjectB) {
try {
const isArrayA = isArray(a);
const isArrayB = isArray(b);
if (isArrayA && isArrayB) {
return (a.length === b.length &&
a.every((e, i) => looseEqual(e, b[i])));
}
else if (a instanceof Date && b instanceof Date) {
return a.getTime() === b.getTime();
}
else if (!isArrayA && !isArrayB) {
const keysA = Object.keys(a);
const keysB = Object.keys(b);
return (keysA.length === keysB.length &&
keysA.every(key => looseEqual(a[key], b[key])));
}
else {
/* istanbul ignore next */
return false;
}
}
catch (e) {
/* istanbul ignore next */
return false;
}
}
else if (!isObjectA && !isObjectB) {
return String(a) === String(b);
}
else {
return false;
}
}
function looseIndexOf(arr, val) {
return arr.findIndex(item => looseEqual(item, val));
}
// retrieve raw value set via :value bindings
function getValue(el) {
return '_value' in el ? el._value : el.value;
}
const vModelDynamic = {
beforeMount(el, binding, vnode) {
callModelHook(el, binding, vnode, null, 'beforeMount');
},
mounted(el, binding, vnode) {
callModelHook(el, binding, vnode, null, 'mounted');
},
beforeUpdate(el, binding, vnode, prevVNode) {
callModelHook(el, binding, vnode, prevVNode, 'beforeUpdate');
},
updated(el, binding, vnode, prevVNode) {
callModelHook(el, binding, vnode, prevVNode, 'updated');
}
};
function callModelHook(el, binding, vnode, prevVNode, hook) {
let modelToUse;
switch (el.tagName) {
case 'SELECT':
modelToUse = vModelSelect;
break;
case 'TEXTAREA':
modelToUse = vModelText;
break;
default:
switch (el.type) {
case 'checkbox':
modelToUse = vModelCheckbox;
break;
case 'radio':
modelToUse = vModelRadio;
break;
default:
modelToUse = vModelText;
}
}
const fn = modelToUse[hook];
fn && fn(el, binding, vnode, prevVNode);
}
const systemModifiers = ['ctrl', 'shift', 'alt', 'meta'];
const modifierGuards = {
stop: e => e.stopPropagation(),
prevent: e => e.preventDefault(),
self: e => e.target !== e.currentTarget,
ctrl: e => !e.ctrlKey,
shift: e => !e.shiftKey,
alt: e => !e.altKey,
meta: e => !e.metaKey,
left: e => 'button' in e && e.button !== 0,
middle: e => 'button' in e && e.button !== 1,
right: e => 'button' in e && e.button !== 2,
exact: (e, modifiers) => systemModifiers.some(m => e[`${m}Key`] && !modifiers.includes(m))
};
const withModifiers = (fn, modifiers) => {
return (event) => {
for (let i = 0; i < modifiers.length; i++) {
const guard = modifierGuards[modifiers[i]];
if (guard && guard(event, modifiers))
return;
}
return fn(event);
};
};
// Kept for 2.x compat.
// Note: IE11 compat for `spacebar` and `del` is removed for now.
const keyNames = {
esc: 'escape',
space: ' ',
up: 'arrow-up',
left: 'arrow-left',
right: 'arrow-right',
down: 'arrow-down',
delete: 'backspace'
};
const withKeys = (fn, modifiers) => {
return (event) => {
if (!('key' in event))
return;
const eventKey = hyphenate(event.key);
if (
// None of the provided key modifiers match the current event key
!modifiers.some(k => k === eventKey || keyNames[k] === eventKey)) {
return;
}
return fn(event);
};
};
const { render: baseRender, createApp: baseCreateApp } = createRenderer({
patchProp,
...nodeOps
});
// use explicit type casts here to avoid import() calls in rolled-up d.ts
const render = baseRender;
const createApp = () => {
const app = baseCreateApp();
{
// Inject `isNativeTag`
// this is used for component name validation (dev only)
Object.defineProperty(app.config, 'isNativeTag', {
value: (tag) => isHTMLTag(tag) || isSVGTag(tag),
writable: false
});
}
const mount = app.mount;
app.mount = (component, container, props) => {
if (isString(container)) {
container = document.querySelector(container);
if (!container) {
warn(`Failed to mount app: mount target selector returned null.`);
return;
}
}
if (
!isFunction(component) &&
!component.render &&
!component.template) {
component.template = container.innerHTML;
}
// clear content before mounting
container.innerHTML = '';
return mount(component, container, props);
};
return app;
};
var runtimeDom = /*#__PURE__*/Object.freeze({
__proto__: null,
render: render,
createApp: createApp,
vModelText: vModelText,
vModelCheckbox: vModelCheckbox,
vModelRadio: vModelRadio,
vModelSelect: vModelSelect,
vModelDynamic: vModelDynamic,
withModifiers: withModifiers,
withKeys: withKeys,
version: version,
PatchFlags: PatchFlags,
capitalize: capitalize$1,
camelize: camelize$1,
nextTick: nextTick,
createComponent: createComponent,
getCurrentInstance: getCurrentInstance,
h: h,
createVNode: createVNode,
cloneVNode: cloneVNode,
mergeProps: mergeProps,
openBlock: openBlock,
createBlock: createBlock,
Text: Text,
Comment: Comment,
Fragment: Fragment,
Portal: Portal,
Suspense: Suspense,
KeepAlive: KeepAlive,
ShapeFlags: PublicShapeFlags,
createRenderer: createRenderer,
warn: warn,
handleError: handleError,
callWithErrorHandling: callWithErrorHandling,
callWithAsyncErrorHandling: callWithAsyncErrorHandling,
withDirectives: withDirectives,
resolveComponent: resolveComponent,
resolveDirective: resolveDirective,
resolveDynamicComponent: resolveDynamicComponent,
renderList: renderList,
toString: toString,
toHandlers: toHandlers,
renderSlot: renderSlot,
createSlots: createSlots,
setBlockTracking: setBlockTracking,
createTextVNode: createTextVNode,
createCommentVNode: createCommentVNode,
registerRuntimeCompiler: registerRuntimeCompiler,
recordEffect: recordEffect,
computed: computed$1,
ref: ref,
isRef: isRef,
toRefs: toRefs,
reactive: reactive,
isReactive: isReactive,
readonly: readonly,
isReadonly: isReadonly,
toRaw: toRaw,
markReadonly: markReadonly,
markNonReactive: markNonReactive,
effect: effect,
watch: watch,
instanceWatch: instanceWatch,
injectHook: injectHook,
createHook: createHook,
onBeforeMount: onBeforeMount,
onMounted: onMounted,
onBeforeUpdate: onBeforeUpdate,
onUpdated: onUpdated,
onBeforeUnmount: onBeforeUnmount,
onUnmounted: onUnmounted,
onRenderTriggered: onRenderTriggered,
onRenderTracked: onRenderTracked,
onErrorCaptured: onErrorCaptured,
onActivated: onActivated,
onDeactivated: onDeactivated,
provide: provide,
inject: inject
});
// This package is the "full-build" that includes both the runtime
function compileToFunction(template, options) {
const { code } = compile(template, {
hoistStatic: true,
...options
});
return new Function('Vue', code)(runtimeDom);
}
registerRuntimeCompiler(compileToFunction);
{
console[console.info ? 'info' : 'log'](`You are running a development build of Vue.\n` +
`Make sure to use the production build (*.prod.js) when deploying for production.`);
}
exports.Comment = Comment;
exports.Fragment = Fragment;
exports.KeepAlive = KeepAlive;
exports.PatchFlags = PatchFlags;
exports.Portal = Portal;
exports.ShapeFlags = PublicShapeFlags;
exports.Suspense = Suspense;
exports.Text = Text;
exports.callWithAsyncErrorHandling = callWithAsyncErrorHandling;
exports.callWithErrorHandling = callWithErrorHandling;
exports.camelize = camelize$1;
exports.capitalize = capitalize$1;
exports.cloneVNode = cloneVNode;
exports.compile = compileToFunction;
exports.computed = computed$1;
exports.createApp = createApp;
exports.createBlock = createBlock;
exports.createCommentVNode = createCommentVNode;
exports.createComponent = createComponent;
exports.createHook = createHook;
exports.createRenderer = createRenderer;
exports.createSlots = createSlots;
exports.createTextVNode = createTextVNode;
exports.createVNode = createVNode;
exports.effect = effect;
exports.getCurrentInstance = getCurrentInstance;
exports.h = h;
exports.handleError = handleError;
exports.inject = inject;
exports.injectHook = injectHook;
exports.instanceWatch = instanceWatch;
exports.isReactive = isReactive;
exports.isReadonly = isReadonly;
exports.isRef = isRef;
exports.markNonReactive = markNonReactive;
exports.markReadonly = markReadonly;
exports.mergeProps = mergeProps;
exports.nextTick = nextTick;
exports.onActivated = onActivated;
exports.onBeforeMount = onBeforeMount;
exports.onBeforeUnmount = onBeforeUnmount;
exports.onBeforeUpdate = onBeforeUpdate;
exports.onDeactivated = onDeactivated;
exports.onErrorCaptured = onErrorCaptured;
exports.onMounted = onMounted;
exports.onRenderTracked = onRenderTracked;
exports.onRenderTriggered = onRenderTriggered;
exports.onUnmounted = onUnmounted;
exports.onUpdated = onUpdated;
exports.openBlock = openBlock;
exports.provide = provide;
exports.reactive = reactive;
exports.readonly = readonly;
exports.recordEffect = recordEffect;
exports.ref = ref;
exports.registerRuntimeCompiler = registerRuntimeCompiler;
exports.render = render;
exports.renderList = renderList;
exports.renderSlot = renderSlot;
exports.resolveComponent = resolveComponent;
exports.resolveDirective = resolveDirective;
exports.resolveDynamicComponent = resolveDynamicComponent;
exports.setBlockTracking = setBlockTracking;
exports.toHandlers = toHandlers;
exports.toRaw = toRaw;
exports.toRefs = toRefs;
exports.toString = toString;
exports.vModelCheckbox = vModelCheckbox;
exports.vModelDynamic = vModelDynamic;
exports.vModelRadio = vModelRadio;
exports.vModelSelect = vModelSelect;
exports.vModelText = vModelText;
exports.version = version;
exports.warn = warn;
exports.watch = watch;
exports.withDirectives = withDirectives;
exports.withKeys = withKeys;
exports.withModifiers = withModifiers;
return exports;
}({}));
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