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authorGravatar Piotr Russ <mail@pruss.it> 2020-11-16 00:10:28 +0100
committerGravatar Piotr Russ <mail@pruss.it> 2020-11-16 00:10:28 +0100
commite06ec920f7a5d784e674c4c4b4e6d1da3dc7391d (patch)
tree55713f725f77b44ebfec86e4eec3ce33e71458ca /node_modules/babel-loader/lib/index.js
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Diffstat (limited to 'node_modules/babel-loader/lib/index.js')
-rw-r--r--node_modules/babel-loader/lib/index.js183
1 files changed, 183 insertions, 0 deletions
diff --git a/node_modules/babel-loader/lib/index.js b/node_modules/babel-loader/lib/index.js
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+"use strict";
+
+var babel = require("babel-core");
+var loaderUtils = require("loader-utils");
+var path = require("path");
+var cache = require("./fs-cache.js");
+var exists = require("./utils/exists");
+var relative = require("./utils/relative");
+var read = require("./utils/read");
+var resolveRc = require("./resolve-rc.js");
+var pkg = require("../package.json");
+var fs = require("fs");
+
+/**
+ * Error thrown by Babel formatted to conform to Webpack reporting.
+ */
+function BabelLoaderError(name, message, codeFrame, hideStack, error) {
+ Error.call(this);
+
+ this.name = "BabelLoaderError";
+ this.message = formatMessage(name, message, codeFrame);
+ this.hideStack = hideStack;
+ this.error = error;
+
+ Error.captureStackTrace(this, BabelLoaderError);
+}
+
+BabelLoaderError.prototype = Object.create(Error.prototype);
+BabelLoaderError.prototype.constructor = BabelLoaderError;
+
+var STRIP_FILENAME_RE = /^[^:]+: /;
+
+var formatMessage = function formatMessage(name, message, codeFrame) {
+ return (name ? name + ": " : "") + message + "\n\n" + codeFrame + "\n";
+};
+
+var transpile = function transpile(source, options) {
+ var forceEnv = options.forceEnv;
+ var tmpEnv = void 0;
+
+ delete options.forceEnv;
+
+ if (forceEnv) {
+ tmpEnv = process.env.BABEL_ENV;
+ process.env.BABEL_ENV = forceEnv;
+ }
+
+ var result = void 0;
+ try {
+ result = babel.transform(source, options);
+ } catch (error) {
+ if (forceEnv) restoreBabelEnv(tmpEnv);
+ if (error.message && error.codeFrame) {
+ var message = error.message;
+ var name = void 0;
+ var hideStack = void 0;
+ if (error instanceof SyntaxError) {
+ message = message.replace(STRIP_FILENAME_RE, "");
+ name = "SyntaxError";
+ hideStack = true;
+ } else if (error instanceof TypeError) {
+ message = message.replace(STRIP_FILENAME_RE, "");
+ hideStack = true;
+ }
+ throw new BabelLoaderError(name, message, error.codeFrame, hideStack, error);
+ } else {
+ throw error;
+ }
+ }
+ var code = result.code;
+ var map = result.map;
+ var metadata = result.metadata;
+
+ if (map && (!map.sourcesContent || !map.sourcesContent.length)) {
+ map.sourcesContent = [source];
+ }
+
+ if (forceEnv) restoreBabelEnv(tmpEnv);
+
+ return {
+ code: code,
+ map: map,
+ metadata: metadata
+ };
+};
+
+function restoreBabelEnv(prevValue) {
+ if (prevValue === undefined) {
+ delete process.env.BABEL_ENV;
+ } else {
+ process.env.BABEL_ENV = prevValue;
+ }
+}
+
+function passMetadata(s, context, metadata) {
+ if (context[s]) {
+ context[s](metadata);
+ }
+}
+
+module.exports = function (source, inputSourceMap) {
+ var _this = this;
+
+ var filename = this.resourcePath;
+
+ // Handle options
+ var loaderOptions = loaderUtils.getOptions(this) || {};
+ var fileSystem = this.fs ? this.fs : fs;
+ var babelrcPath = null;
+ if (loaderOptions.babelrc !== false) {
+ babelrcPath = typeof loaderOptions.babelrc === "string" && exists(fileSystem, loaderOptions.babelrc) ? loaderOptions.babelrc : resolveRc(fileSystem, path.dirname(filename));
+ }
+
+ if (babelrcPath) {
+ this.addDependency(babelrcPath);
+ }
+
+ var defaultOptions = {
+ metadataSubscribers: [],
+ inputSourceMap: inputSourceMap,
+ sourceRoot: process.cwd(),
+ filename: filename,
+ cacheIdentifier: JSON.stringify({
+ "babel-loader": pkg.version,
+ "babel-core": babel.version,
+ babelrc: babelrcPath ? read(fileSystem, babelrcPath) : null,
+ env: loaderOptions.forceEnv || process.env.BABEL_ENV || process.env.NODE_ENV || "development"
+ })
+ };
+
+ var options = Object.assign({}, defaultOptions, loaderOptions);
+
+ if (loaderOptions.sourceMap === undefined) {
+ options.sourceMap = this.sourceMap;
+ }
+
+ if (options.sourceFileName === undefined) {
+ options.sourceFileName = relative(options.sourceRoot, options.filename);
+ }
+
+ var cacheDirectory = options.cacheDirectory;
+ var cacheIdentifier = options.cacheIdentifier;
+ var metadataSubscribers = options.metadataSubscribers;
+
+ delete options.cacheDirectory;
+ delete options.cacheIdentifier;
+ delete options.metadataSubscribers;
+
+ if (cacheDirectory) {
+ var callback = this.async();
+ return cache({
+ directory: cacheDirectory,
+ identifier: cacheIdentifier,
+ source: source,
+ options: options,
+ transform: transpile
+ }, function (err) {
+ var _ref = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : {},
+ code = _ref.code,
+ map = _ref.map,
+ metadata = _ref.metadata;
+
+ if (err) return callback(err);
+
+ metadataSubscribers.forEach(function (s) {
+ return passMetadata(s, _this, metadata);
+ });
+
+ return callback(null, code, map);
+ });
+ }
+
+ var _transpile = transpile(source, options),
+ code = _transpile.code,
+ map = _transpile.map,
+ metadata = _transpile.metadata;
+
+ metadataSubscribers.forEach(function (s) {
+ return passMetadata(s, _this, metadata);
+ });
+
+ this.callback(null, code, map);
+}; \ No newline at end of file