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246 lines
8.5 KiB
246 lines
8.5 KiB
"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 || loaderOptions.inputSourceMap, |
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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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} // babel.loadPartialConfigAsync is available in v7.8.0+ |
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const { |
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loadPartialConfigAsync = babel.loadPartialConfig |
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} = babel; |
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const config = yield loadPartialConfigAsync(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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} // Availabe since Babel 7.12 |
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// https://github.com/babel/babel/pull/11907 |
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if (config.files) { |
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config.files.forEach(configFile => this.addDependency(configFile)); |
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} else { |
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// .babelrc.json |
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if (typeof config.babelrc === "string") { |
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this.addDependency(config.babelrc); |
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} // babel.config.js |
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if (config.config) { |
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this.addDependency(config.config); |
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} |
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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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} |