react-native/Libraries/Utilities/HMRClient.js

97 lines
3.0 KiB
JavaScript

/**
* Copyright (c) Facebook, Inc. and its affiliates.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*
* @format
* @flow
*/
'use strict';
const Platform = require('Platform');
const invariant = require('fbjs/lib/invariant');
const MetroHMRClient = require('metro/src/lib/bundle-modules/HMRClient');
/**
* HMR Client that receives from the server HMR updates and propagates them
* runtime to reflects those changes.
*/
const HMRClient = {
enable(platform: string, bundleEntry: string, host: string, port: number) {
invariant(platform, 'Missing required parameter `platform`');
invariant(bundleEntry, 'Missing required paramenter `bundleEntry`');
invariant(host, 'Missing required paramenter `host`');
// Moving to top gives errors due to NativeModules not being initialized
const HMRLoadingView = require('HMRLoadingView');
const wsHostPort = port !== null && port !== '' ? `${host}:${port}` : host;
bundleEntry = bundleEntry.replace(/\.(bundle|delta)/, '.js');
// Build the websocket url
const wsUrl =
`ws://${wsHostPort}/hot?` +
`platform=${platform}&` +
`bundleEntry=${bundleEntry}`;
const hmrClient = new MetroHMRClient(wsUrl);
hmrClient.on('connection-error', e => {
let error = `Hot loading isn't working because it cannot connect to the development server.
Try the following to fix the issue:
- Ensure that the packager server is running and available on the same network`;
if (Platform.OS === 'ios') {
error += `
- Ensure that the Packager server URL is correctly set in AppDelegate`;
} else {
error += `
- Ensure that your device/emulator is connected to your machine and has USB debugging enabled - run 'adb devices' to see a list of connected devices
- If you're on a physical device connected to the same machine, run 'adb reverse tcp:8081 tcp:8081' to forward requests from your device
- If your device is on the same Wi-Fi network, set 'Debug server host & port for device' in 'Dev settings' to your machine's IP address and the port of the local dev server - e.g. 10.0.1.1:8081`;
}
error += `
URL: ${host}:${port}
Error: ${e.message}`;
throw new Error(error);
});
hmrClient.on('update-start', () => {
HMRLoadingView.showMessage('Hot Loading...');
});
hmrClient.on('update', () => {
if (Platform.OS === 'ios') {
const RCTRedBox = require('NativeModules').RedBox;
RCTRedBox && RCTRedBox.dismiss && RCTRedBox.dismiss();
} else {
const RCTExceptionsManager = require('NativeModules').ExceptionsManager;
RCTExceptionsManager &&
RCTExceptionsManager.dismissRedbox &&
RCTExceptionsManager.dismissRedbox();
}
});
hmrClient.on('update-done', () => {
HMRLoadingView.hide();
});
hmrClient.on('error', data => {
HMRLoadingView.hide();
throw new Error(`${data.type} ${data.message}`);
});
hmrClient.enable();
},
};
module.exports = HMRClient;