127 lines
3.9 KiB
JavaScript
127 lines
3.9 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 HMRClient
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*/
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'use strict';
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const Platform = require('Platform');
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const invariant = require('invariant');
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const processColor = require('processColor');
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/**
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* HMR Client that receives from the server HMR updates and propagates them
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* runtime to reflects those changes.
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*/
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const HMRClient = {
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enable(platform, bundleEntry, host, port) {
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invariant(platform, 'Missing required parameter `platform`');
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invariant(bundleEntry, 'Missing required paramenter `bundleEntry`');
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invariant(host, 'Missing required paramenter `host`');
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// need to require WebSocket inside of `enable` function because
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// this module is defined as a `polyfillGlobal`.
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// See `InitializeJavascriptAppEngine.js`
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const WebSocket = require('WebSocket');
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const wsHostPort = port !== null && port !== ''
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? `${host}:${port}`
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: host;
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// Build the websocket url
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const wsUrl = `ws://${wsHostPort}/hot?` +
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`platform=${platform}&` +
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`bundleEntry=${bundleEntry.replace('.bundle', '.js')}`;
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const activeWS = new WebSocket(wsUrl);
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activeWS.onerror = (e) => {
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throw new Error(
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`Hot loading isn't working because it cannot connect to the development server.
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Ensure the following:
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- Node server is running and available on the same network
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- run 'npm start' from react-native root
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- Node server URL is correctly set in AppDelegate
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URL: ${host}:${port}
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Error: ${e.message}`
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);
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};
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activeWS.onmessage = ({data}) => {
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let DevLoadingView = require('NativeModules').DevLoadingView;
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if (!DevLoadingView) {
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DevLoadingView = {
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showMessage() {},
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hide() {},
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};
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}
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data = JSON.parse(data);
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switch (data.type) {
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case 'update-start': {
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DevLoadingView.showMessage(
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'Hot Loading...',
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processColor('#000000'),
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processColor('#aaaaaa'),
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);
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break;
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}
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case 'update': {
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const modules = data.body.modules;
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const sourceMappingURLs = data.body.sourceMappingURLs;
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const sourceURLs = data.body.sourceURLs;
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if (Platform.OS === 'ios') {
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const RCTRedBox = require('NativeModules').RedBox;
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RCTRedBox && RCTRedBox.dismiss && RCTRedBox.dismiss();
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} else {
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const RCTExceptionsManager = require('NativeModules').ExceptionsManager;
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RCTExceptionsManager && RCTExceptionsManager.dismissRedbox && RCTExceptionsManager.dismissRedbox();
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}
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modules.forEach((code, i) => {
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code = code + '\n\n' + sourceMappingURLs[i];
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require('SourceMapsCache').fetch({
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text: code,
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url: sourceURLs[i],
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sourceMappingURL: sourceMappingURLs[i],
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});
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// on JSC we need to inject from native for sourcemaps to work
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// (Safari doesn't support `sourceMappingURL` nor any variant when
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// evaluating code) but on Chrome we can simply use eval
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const injectFunction = typeof global.nativeInjectHMRUpdate === 'function'
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? global.nativeInjectHMRUpdate
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: eval;
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injectFunction(code, sourceURLs[i]);
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});
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DevLoadingView.hide();
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break;
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}
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case 'update-done': {
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DevLoadingView.hide();
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break;
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}
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case 'error': {
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DevLoadingView.hide();
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throw new Error(data.body.type + ' ' + data.body.description);
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}
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default: {
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throw new Error(`Unexpected message: ${data}`);
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}
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}
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};
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},
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};
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module.exports = HMRClient;
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