84 lines
2.3 KiB
JavaScript
84 lines
2.3 KiB
JavaScript
/**
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* Copyright (c) 2015-present, Facebook, Inc.
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* All rights reserved.
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*
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* This source code is licensed under the BSD-style license found in the
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* LICENSE file in the root directory of this source tree. An additional grant
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* of patent rights can be found in the PATENTS file in the same directory.
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*
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* @providesModule SourceMapsUtils
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* @flow
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*/
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'use strict';
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var HMRClient = require('../../Utilities/HMRClient');
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var Promise = require('Promise');
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var NativeModules = require('NativeModules');
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var SourceMapConsumer = require('SourceMap').SourceMapConsumer;
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var SourceMapURL = require('./source-map-url');
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var RCTSourceCode = NativeModules.SourceCode;
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var RCTNetworking = NativeModules.Networking;
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var SourceMapsUtils = {
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fetchMainSourceMap(): Promise {
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return SourceMapsUtils._getMainSourceMapURL().then(url =>
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SourceMapsUtils.fetchSourceMap(url)
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);
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},
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fetchSourceMap(sourceMappingURL: string): Promise {
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return fetch(sourceMappingURL)
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.then(response => response.text())
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.then(map => new SourceMapConsumer(map));
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},
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extractSourceMapURL(data: ({url?:string, text?:string, fullSourceMappingURL?:string})): ?string {
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const url = data.url;
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const text = data.text;
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const fullSourceMappingURL = data.fullSourceMappingURL;
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if (fullSourceMappingURL) {
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return fullSourceMappingURL;
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}
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var mapURL = SourceMapURL.getFrom(text);
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if (!mapURL) {
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return null;
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}
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if (!url) {
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return null;
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}
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var baseURLs = url.match(/(.+:\/\/.*?)\//);
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if (!baseURLs || baseURLs.length < 2) {
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return null;
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}
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return baseURLs[1] + mapURL;
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},
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_getMainSourceMapURL(): Promise {
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if (global.RAW_SOURCE_MAP) {
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return Promise.resolve(global.RAW_SOURCE_MAP);
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}
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if (!RCTSourceCode) {
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return Promise.reject(new Error('RCTSourceCode module is not available'));
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}
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if (!RCTNetworking) {
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// Used internally by fetch
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return Promise.reject(new Error('RCTNetworking module is not available'));
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}
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return RCTSourceCode.getScriptText()
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.then(SourceMapsUtils.extractSourceMapURL)
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.then((url) => {
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if (url === null) {
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return Promise.reject(new Error('No source map URL found. May be running from bundled file.'));
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}
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return Promise.resolve(url);
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});
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},
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};
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module.exports = SourceMapsUtils;
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