67 lines
1.8 KiB
JavaScript
67 lines
1.8 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 loadSourceMap
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* @flow
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*/
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'use strict';
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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 RCTDataManager = NativeModules.DataManager;
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function loadSourceMap(): Promise {
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return fetchSourceMap()
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.then(map => new SourceMapConsumer(map));
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}
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function fetchSourceMap(): 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 (!RCTDataManager) {
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// Used internally by fetch
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return Promise.reject(new Error('RCTDataManager module is not available'));
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}
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return new Promise(RCTSourceCode.getScriptText)
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.then(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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.then(fetch)
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.then(response => response.text())
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}
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function extractSourceMapURL({url, text, fullSourceMappingURL}): ?string {
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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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var baseURL = url.match(/(.+:\/\/.*?)\//)[1];
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return baseURL + mapURL;
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}
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module.exports = loadSourceMap;
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