craigtaub’s gists

craigtaub / under-the-hood of test runner: mocha run().js

Last active May 26, 2020 12:18

	Mocha.prototype.run = function (fn) {
	var suite = this.suite;
	var options = this.options;
	options.files = this.files;
	var runner = new Runner(suite, options.delay);
	createStatsCollector(runner);
	var reporter = new this._reporter(runner, options);

	const noop = () => "";
	function done(failures) {

craigtaub / under-the-hood of test runner: load files async.js

Last active May 26, 2020 12:03

	Mocha.prototype.loadFilesAsync = async function () {
	var self = this;
	var suite = this.suite;

	for (let file of this.files) {
	// preload
	suite.emit(Suite.constants.EVENT_FILE_PRE_REQUIRE, global, file, self);
	// load
	file = path.resolve(file);
	const result = await require(file);

craigtaub / under-the-hood of test runner: start execution.js

Last active May 26, 2020 11:49

	async function runMocha(mocha, options) {
	const { spec = [] } = options;

	// if options.watch watchRun()

	// singleRun
	// collectFiles and lookupFiles here
	mocha.files = spec;
	await mocha.loadFilesAsync();
	return mocha.run(exitMochaLater);

craigtaub / under-the-hood of test runner: mocha contructor.js

Created May 26, 2020 11:02

	function Mocha(options) {
	this.files = [];
	this.options = options;

	// lib/context.js. empty context
	function Context() {}
	// root suite
	this.suite = new Suite("", new Context(), true);

	this.ui(options.ui).reporter(options.reporter);

craigtaub / under-the-hood of test runner: bdd interface.js

Created May 26, 2020 10:57

	bdd: function bddInterface(suite) {
	var suites = [suite];

	suite.on(Suite.constants.EVENT_FILE_PRE_REQUIRE, function (
	context,
	file,
	mocha
	) {
	var common = Mocha.interfaces.common(suites, context, mocha);

craigtaub / under-the-hood of test runners: yargs.js

Created May 25, 2020 12:02

	// lib cli/cli.js main()
	const argv = process.argv.slice(2);
	// lib/cli/options loadOptions()
	var args = yargsParser.detailed(argv).argv;
	args._ = Array.from(new Set(args._));

	yargs()
	.scriptName("our_mocha")
	.command(commands.run)
	.fail((msg, err, yargs) => {

craigtaub / under-the-hood of test runner: parsing builder.js

Last active May 25, 2020 12:06

	const builder = (yargs) => {
	// cli/run.js builder()
	return yargs
	.options({
	config: {
	config: true,
	description: "Path to config file",
	},
	reporter: {
	default: defaults.reporter,

craigtaub / ssr architecture

Last active May 18, 2020 14:52

SSR architecture

craigtaub / under-the-hood of type systems: compiler process program.js

Created May 5, 2020 14:30

	// Process program
	ast.program.body.map(stnmt => {
	switch (stnmt.type) {
	case "FunctionDeclaration":
	stnmt.params.map(arg => {
	// Does arg has a type annotation?
	if (arg.typeAnnotation) {
	const argType = arg.typeAnnotation.typeAnnotation.type;
	// Is type annotation valid
	const isValid = typeChecks.annotationCheck(argType);

craigtaub / under-the-hood of type systems: type checks logic.js

Last active May 5, 2020 14:29

	const errors = [];

	const ANNOTATED_TYPES = {
	NumberTypeAnnotation: "number",
	GenericTypeAnnotation: true
	};

	// Logic for type checks
	const typeChecks = {
	expression: (declarationFullType, callerFullArg) => {

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