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test babel plugin
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const babel = require('@babel/core'); | |
const t = require('@babel/types'); | |
const sampleCode = `\ | |
import {uniq, extend, flatten, cloneDeep } from "lodash"; | |
export default function Test() { | |
return ( | |
<Sky.Card> | |
Test | |
<Wind.Button type="primary" loading>{intl('sas.baseline.inDetection')}</Wind.Button> | |
</Sky.Card> | |
); | |
}\ | |
`; | |
const babelOptions = { | |
plugins: ["@babel/plugin-transform-react-jsx"] | |
}; | |
const mapCommonComponents = { | |
'intl': '@ali/wind-intl', | |
}; | |
const importComponents = { | |
Sky: [], | |
Wind: [], | |
common: [], | |
}; | |
const visitor = { | |
ImportDeclaration(path, options={opts:{}}){ | |
const { specifiers, source } = path.node; | |
if (!t.isImportDefaultSpecifier(specifiers[0]) ) { | |
const declarations = []; | |
specifiers.forEach(specifier => { | |
declarations.push(`import ${ specifier.local.name } from "${ source.value }/${ specifier.local.name}";`) | |
}); | |
path.replaceWithMultiple( | |
babel.parse(declarations.join(''), babelOptions).program.body.map(c => ({ | |
type: c.type, | |
specifiers: c.specifiers, | |
source: { | |
type: c.source.type, | |
value: c.source.value, | |
} | |
})) | |
); | |
} | |
}, | |
JSXElement(path, { file }) { | |
const { node } = path; | |
const {object, property} = node.openingElement.name; | |
file.set('hasJSX', true); | |
if (object && ['Sky', 'Wind'].indexOf(object.name) + 1) { | |
let name = { | |
type: 'JSXIdentifier', | |
name: `${ object.name }${ property.name }`, | |
}; | |
node.openingElement.name = name; | |
if (node.closingElement) { | |
node.closingElement.name = name; | |
} | |
importComponents[object.name].push(property.name); | |
path.replaceWith(node); | |
} | |
}, | |
CallExpression({ node, scope }) { | |
if (node.callee.name in mapCommonComponents && !scope.hasBinding(node.callee.name)) { | |
importComponents.common.push(node.callee.name); | |
} | |
}, | |
Program: { | |
enter (_, { file }) { | |
file.set('hasJSX', false); | |
}, | |
exit({ node, scope }, { file }) { | |
let declaration; | |
if (importComponents.Sky.length) { | |
declaration = babel.parse(`import {${ importComponents.Sky.map(c => `${c} as Sky${c}`).join(',')}} from '@ali/sky'`); | |
node.body.unshift(declaration.program.body[0]); | |
} | |
if (importComponents.Wind.length) { | |
declaration = babel.parse(`import {${ importComponents.Wind.map(c => `${c} as Wind${c}`).join(',')}} from '@ali/wind'`); | |
node.body.unshift(declaration.program.body[0]); | |
} | |
[...new Set(importComponents.common)].forEach(name => { | |
node.body.unshift(babel.parse(`import ${ name } from '${ mapCommonComponents[name] }'`).program.body[0]); | |
}); | |
if (file.get('hasJSX') && !scope.hasBinding('React')) { | |
declaration = babel.parse(`import React from 'react'`); | |
node.body.unshift(declaration.program.body[0]); | |
} | |
} | |
} | |
}; | |
const result = babel.transform(sampleCode, { | |
plugins: babelOptions.plugins.concat([{ | |
visitor | |
}]) | |
}); | |
console.log('\n\ninput:'); | |
console.log(sampleCode); | |
console.log('\n\n\nout:'); | |
console.log(result.code, '\n\n'); |
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