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144 lines
3.9 KiB
144 lines
3.9 KiB
"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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} // 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; // 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] : // 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; // 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) { |
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this.addDependency(sourceURL); |
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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 = { ...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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} |