232 lines
8.2 KiB
JavaScript
232 lines
8.2 KiB
JavaScript
"use strict";
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function asyncGeneratorStep(gen, resolve, reject, _next, _throw, key, arg) { try { var info = gen[key](arg); var value = info.value; } catch (error) { reject(error); return; } if (info.done) { resolve(value); } else { Promise.resolve(value).then(_next, _throw); } }
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function _asyncToGenerator(fn) { return function () { var self = this, args = arguments; return new Promise(function (resolve, reject) { var gen = fn.apply(self, args); function _next(value) { asyncGeneratorStep(gen, resolve, reject, _next, _throw, "next", value); } function _throw(err) { asyncGeneratorStep(gen, resolve, reject, _next, _throw, "throw", err); } _next(undefined); }); }; }
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let babel;
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try {
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babel = require("@babel/core");
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} catch (err) {
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if (err.code === "MODULE_NOT_FOUND") {
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err.message += "\n babel-loader@8 requires Babel 7.x (the package '@babel/core'). " + "If you'd like to use Babel 6.x ('babel-core'), you should install 'babel-loader@7'.";
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}
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throw err;
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} // Since we've got the reverse bridge package at @babel/core@6.x, give
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// people useful feedback if they try to use it alongside babel-loader.
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if (/^6\./.test(babel.version)) {
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throw new Error("\n babel-loader@8 will not work with the '@babel/core@6' bridge package. " + "If you want to use Babel 6.x, install 'babel-loader@7'.");
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}
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const {
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version
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} = require("../package.json");
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const cache = require("./cache");
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const transform = require("./transform");
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const injectCaller = require("./injectCaller");
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const schema = require("./schema");
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const {
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isAbsolute
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} = require("path");
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const loaderUtils = require("loader-utils");
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const validateOptions = require("schema-utils");
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function subscribe(subscriber, metadata, context) {
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if (context[subscriber]) {
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context[subscriber](metadata);
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}
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}
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module.exports = makeLoader();
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module.exports.custom = makeLoader;
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function makeLoader(callback) {
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const overrides = callback ? callback(babel) : undefined;
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return function (source, inputSourceMap) {
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// Make the loader async
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const callback = this.async();
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loader.call(this, source, inputSourceMap, overrides).then(args => callback(null, ...args), err => callback(err));
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};
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}
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function loader(_x, _x2, _x3) {
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return _loader.apply(this, arguments);
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}
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function _loader() {
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_loader = _asyncToGenerator(function* (source, inputSourceMap, overrides) {
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const filename = this.resourcePath;
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let loaderOptions = loaderUtils.getOptions(this) || {};
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validateOptions(schema, loaderOptions, {
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name: "Babel loader"
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});
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if (loaderOptions.customize != null) {
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if (typeof loaderOptions.customize !== "string") {
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throw new Error("Customized loaders must be implemented as standalone modules.");
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}
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if (!isAbsolute(loaderOptions.customize)) {
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throw new Error("Customized loaders must be passed as absolute paths, since " + "babel-loader has no way to know what they would be relative to.");
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}
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if (overrides) {
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throw new Error("babel-loader's 'customize' option is not available when already " + "using a customized babel-loader wrapper.");
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}
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let override = require(loaderOptions.customize);
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if (override.__esModule) override = override.default;
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if (typeof override !== "function") {
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throw new Error("Custom overrides must be functions.");
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}
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overrides = override(babel);
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}
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let customOptions;
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if (overrides && overrides.customOptions) {
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const result = yield overrides.customOptions.call(this, loaderOptions, {
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source,
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map: inputSourceMap
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});
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customOptions = result.custom;
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loaderOptions = result.loader;
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} // Deprecation handling
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if ("forceEnv" in loaderOptions) {
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console.warn("The option `forceEnv` has been removed in favor of `envName` in Babel 7.");
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}
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if (typeof loaderOptions.babelrc === "string") {
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console.warn("The option `babelrc` should not be set to a string anymore in the babel-loader config. " + "Please update your configuration and set `babelrc` to true or false.\n" + "If you want to specify a specific babel config file to inherit config from " + "please use the `extends` option.\nFor more information about this options see " + "https://babeljs.io/docs/core-packages/#options");
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} // Standardize on 'sourceMaps' as the key passed through to Webpack, so that
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// users may safely use either one alongside our default use of
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// 'this.sourceMap' below without getting error about conflicting aliases.
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if (Object.prototype.hasOwnProperty.call(loaderOptions, "sourceMap") && !Object.prototype.hasOwnProperty.call(loaderOptions, "sourceMaps")) {
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loaderOptions = Object.assign({}, loaderOptions, {
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sourceMaps: loaderOptions.sourceMap
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});
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delete loaderOptions.sourceMap;
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}
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const programmaticOptions = Object.assign({}, loaderOptions, {
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filename,
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inputSourceMap: inputSourceMap || undefined,
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// Set the default sourcemap behavior based on Webpack's mapping flag,
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// but allow users to override if they want.
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sourceMaps: loaderOptions.sourceMaps === undefined ? this.sourceMap : loaderOptions.sourceMaps,
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// Ensure that Webpack will get a full absolute path in the sourcemap
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// so that it can properly map the module back to its internal cached
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// modules.
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sourceFileName: filename
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}); // Remove loader related options
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delete programmaticOptions.customize;
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delete programmaticOptions.cacheDirectory;
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delete programmaticOptions.cacheIdentifier;
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delete programmaticOptions.cacheCompression;
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delete programmaticOptions.metadataSubscribers;
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if (!babel.loadPartialConfig) {
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throw new Error(`babel-loader ^8.0.0-beta.3 requires @babel/core@7.0.0-beta.41, but ` + `you appear to be using "${babel.version}". Either update your ` + `@babel/core version, or pin you babel-loader version to 8.0.0-beta.2`);
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}
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const config = babel.loadPartialConfig(injectCaller(programmaticOptions, this.target));
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if (config) {
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let options = config.options;
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if (overrides && overrides.config) {
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options = yield overrides.config.call(this, config, {
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source,
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map: inputSourceMap,
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customOptions
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});
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}
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if (options.sourceMaps === "inline") {
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// Babel has this weird behavior where if you set "inline", we
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// inline the sourcemap, and set 'result.map = null'. This results
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// in bad behavior from Babel since the maps get put into the code,
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// which Webpack does not expect, and because the map we return to
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// Webpack is null, which is also bad. To avoid that, we override the
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// behavior here so "inline" just behaves like 'true'.
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options.sourceMaps = true;
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}
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const {
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cacheDirectory = null,
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cacheIdentifier = JSON.stringify({
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options,
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"@babel/core": transform.version,
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"@babel/loader": version
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}),
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cacheCompression = true,
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metadataSubscribers = []
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} = loaderOptions;
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let result;
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if (cacheDirectory) {
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result = yield cache({
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source,
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options,
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transform,
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cacheDirectory,
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cacheIdentifier,
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cacheCompression
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});
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} else {
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result = yield transform(source, options);
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} // TODO: Babel should really provide the full list of config files that
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// were used so that this can also handle files loaded with 'extends'.
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if (typeof config.babelrc === "string") {
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this.addDependency(config.babelrc);
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}
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if (result) {
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if (overrides && overrides.result) {
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result = yield overrides.result.call(this, result, {
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source,
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map: inputSourceMap,
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customOptions,
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config,
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options
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});
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}
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const {
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code,
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map,
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metadata
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} = result;
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metadataSubscribers.forEach(subscriber => {
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subscribe(subscriber, metadata, this);
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});
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return [code, map];
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}
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} // If the file was ignored, pass through the original content.
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return [source, inputSourceMap];
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});
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return _loader.apply(this, arguments);
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} |