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https://github.com/status-im/react-native.git
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595eae8b67
Summary: So when I first started porting JS files over from LearnGitBranching into a react native project, I some had require errors (for whatever reason) and I hit this error message a decent amount. I eventually understood it had nothing to do with failing to register the component (which btw sounds like some sign-up process, not actually an internal concept) but I figured we could expand on this message and describe why it might be happening. I'm not 100% sure on what the second half should be, but open to feedback on this Closes https://github.com/facebook/react-native/pull/826 Github Author: Peter Cottle <pcottle@fb.com> Test Plan: Imported from GitHub, without a `Test Plan:` line.
86 lines
2.7 KiB
JavaScript
86 lines
2.7 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 AppRegistry
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* @flow
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*/
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'use strict';
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var invariant = require('invariant');
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var renderApplication = require('renderApplication');
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if (__DEV__) {
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// In order to use Cmd+P to record/dump perf data, we need to make sure
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// this module is available in the bundle
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require('RCTRenderingPerf');
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}
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var runnables = {};
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type AppConfig = {
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appKey: string;
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component: ReactClass<any, any, any>;
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run?: Function;
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};
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/**
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* `AppRegistry` is the JS entry point to running all React Native apps. App
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* root components should register themselves with
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* `AppRegistry.registerComponent`, then the native system can load the bundle
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* for the app and then actually run the app when it's ready by invoking
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* `AppRegistry.runApplication`.
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*
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* `AppRegistry` should be `require`d early in the `require` sequence to make
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* sure the JS execution environment is setup before other modules are
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* `require`d.
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*/
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var AppRegistry = {
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registerConfig: function(config: Array<AppConfig>) {
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for (var i = 0; i < config.length; ++i) {
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var appConfig = config[i];
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if (appConfig.run) {
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AppRegistry.registerRunnable(appConfig.appKey, appConfig.run);
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} else {
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AppRegistry.registerComponent(appConfig.appKey, appConfig.component);
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}
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}
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},
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registerComponent: function(appKey: string, getComponentFunc: Function): string {
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runnables[appKey] = {
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run: (appParameters) =>
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renderApplication(getComponentFunc(), appParameters.initialProps, appParameters.rootTag)
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};
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return appKey;
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},
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registerRunnable: function(appKey: string, func: Function): string {
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runnables[appKey] = {run: func};
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return appKey;
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},
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runApplication: function(appKey: string, appParameters: any): void {
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console.log(
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'Running application "' + appKey + '" with appParams: ' +
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JSON.stringify(appParameters) + '. ' +
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'__DEV__ === ' + __DEV__ +
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', development-level warning are ' + (__DEV__ ? 'ON' : 'OFF') +
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', performance optimizations are ' + (__DEV__ ? 'OFF' : 'ON')
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);
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invariant(
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runnables[appKey] && runnables[appKey].run,
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'Application ' + appKey + ' has not been registered. This ' +
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'is either due to a require() error during initialization ' +
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'or failure to call AppRegistry.registerComponent.'
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);
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runnables[appKey].run(appParameters);
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},
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};
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module.exports = AppRegistry;
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