128 lines
4 KiB
JavaScript
128 lines
4 KiB
JavaScript
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"use strict";
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Object.defineProperty(exports, "__esModule", {
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value: true
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});
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exports.default = loader;
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var _path = _interopRequireDefault(require("path"));
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var _options = _interopRequireDefault(require("./options.json"));
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var _utils = require("./utils");
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function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }
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/*
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MIT License http://www.opensource.org/licenses/mit-license.php
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Author Tobias Koppers @sokra
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*/
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async function loader(input, inputMap) {
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const options = this.getOptions(_options.default);
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const {
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sourceMappingURL,
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replacementString
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} = (0, _utils.getSourceMappingURL)(input);
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const callback = this.async();
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if (!sourceMappingURL) {
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callback(null, input, inputMap);
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return;
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}
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let behaviourSourceMappingUrl;
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try {
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behaviourSourceMappingUrl = typeof options.filterSourceMappingUrl !== "undefined" ? options.filterSourceMappingUrl(sourceMappingURL, this.resourcePath) : "consume";
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} catch (error) {
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callback(error);
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return;
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}
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// eslint-disable-next-line default-case
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switch (behaviourSourceMappingUrl) {
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case "skip":
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callback(null, input, inputMap);
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return;
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case false:
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case "remove":
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callback(null, input.replace(replacementString, ""), inputMap);
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return;
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}
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let sourceURL;
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let sourceContent;
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try {
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({
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sourceURL,
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sourceContent
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} = await (0, _utils.fetchFromURL)(this, this.context, sourceMappingURL));
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} catch (error) {
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this.emitWarning(error);
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callback(null, input, inputMap);
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return;
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}
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if (sourceURL) {
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this.addDependency(sourceURL);
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}
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let map;
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try {
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map = JSON.parse(sourceContent.replace(/^\)\]\}'/, ""));
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} catch (parseError) {
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this.emitWarning(new Error(`Failed to parse source map from '${sourceMappingURL}': ${parseError}`));
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callback(null, input, inputMap);
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return;
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}
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const context = sourceURL ? _path.default.dirname(sourceURL) : this.context;
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if (map.sections) {
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// eslint-disable-next-line no-param-reassign
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map = await (0, _utils.flattenSourceMap)(map);
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}
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const resolvedSources = await Promise.all(map.sources.map(async (source, i) => {
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// eslint-disable-next-line no-shadow
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let sourceURL;
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// eslint-disable-next-line no-shadow
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let sourceContent;
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const originalSourceContent = map.sourcesContent && typeof map.sourcesContent[i] !== "undefined" && map.sourcesContent[i] !== null ? map.sourcesContent[i] :
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// eslint-disable-next-line no-undefined
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undefined;
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const skipReading = typeof originalSourceContent !== "undefined";
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let errored = false;
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// We do not skipReading here, because we need absolute paths in sources.
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// This is necessary so that for sourceMaps with the same file structure in sources, name collisions do not occur.
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// https://github.com/webpack-contrib/source-map-loader/issues/51
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try {
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({
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sourceURL,
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sourceContent
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} = await (0, _utils.fetchFromURL)(this, context, source, map.sourceRoot, skipReading));
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} catch (error) {
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errored = true;
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this.emitWarning(error);
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}
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if (skipReading) {
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sourceContent = originalSourceContent;
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} else if (!errored && sourceURL && !(0, _utils.isURL)(sourceURL)) {
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this.addDependency(sourceURL);
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}
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// Return original value of `source` when error happens
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return {
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sourceURL: errored ? source : sourceURL,
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sourceContent
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};
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}));
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const newMap = {
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...map
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};
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newMap.sources = [];
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newMap.sourcesContent = [];
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delete newMap.sourceRoot;
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resolvedSources.forEach(source => {
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// eslint-disable-next-line no-shadow
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const {
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sourceURL,
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sourceContent
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} = source;
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newMap.sources.push(sourceURL || "");
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newMap.sourcesContent.push(sourceContent || "");
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});
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const sourcesContentIsEmpty = newMap.sourcesContent.filter(entry => Boolean(entry)).length === 0;
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if (sourcesContentIsEmpty) {
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delete newMap.sourcesContent;
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}
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callback(null, input.replace(replacementString, ""), newMap);
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}
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