mirror of
https://github.com/zhigang1992/react-native.git
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90781d3067
Summary: public This diff adds infra to both the Packager and the running app to have a WebSocket based connection between them. This connection is toggled by a new dev menu item, namely `Enable/Disable Hot Loading`. Reviewed By: vjeux Differential Revision: D2787621 fb-gh-sync-id: d1dee769348e4830c28782e7b650d025f2b3a786
41 lines
1.1 KiB
JavaScript
41 lines
1.1 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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let _activeWS;
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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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setEnabled(enabled) {
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if (_activeWS && _activeWS) {
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_activeWS.close();
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_activeWS = null;
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}
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if (enabled) {
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// TODO(martinb): parametrize the url and receive entryFile to minimize
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// the number of updates we want to receive from the server.
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_activeWS = new WebSocket('ws://localhost:8081/hot');
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_activeWS.onerror = (e) => {
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console.error('[Hot Module Replacement] Unexpected error', e);
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};
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_activeWS.onmessage = (m) => {
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// TODO(martinb): inject HMR update
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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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