106 lines
3.8 KiB
JavaScript
106 lines
3.8 KiB
JavaScript
/**
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* Copyright (c) 2013-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 BugReporting
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* @flow
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*/
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'use strict';
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const RCTDeviceEventEmitter = require('RCTDeviceEventEmitter');
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const Map = require('Map');
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const infoLog = require('infoLog');
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import type EmitterSubscription from 'EmitterSubscription';
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type ExtraData = { [key: string]: string };
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type SourceCallback = () => string;
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type DebugData = { extras: ExtraData, files: ExtraData };
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function defaultExtras() {
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BugReporting.addFileSource('react_hierarchy.txt', () => require('dumpReactTree')());
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}
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/**
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* A simple class for collecting bug report data. Components can add sources that will be queried when a bug report
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* is created via `collectExtraData`. For example, a list component might add a source that provides the list of rows
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* that are currently visible on screen. Components should also remember to call `remove()` on the object that is
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* returned by `addSource` when they are unmounted.
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*/
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class BugReporting {
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static _extraSources: Map<string, SourceCallback> = new Map();
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static _fileSources: Map<string, SourceCallback> = new Map();
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static _subscription: ?EmitterSubscription = null;
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static _maybeInit() {
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if (!BugReporting._subscription) {
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BugReporting._subscription = RCTDeviceEventEmitter
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.addListener('collectBugExtraData', BugReporting.collectExtraData, null);
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defaultExtras();
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}
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}
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/**
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* Maps a string key to a simple callback that should return a string payload to be attached
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* to a bug report. Source callbacks are called when `collectExtraData` is called.
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*
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* Returns an object to remove the source when the component unmounts.
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*
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* Conflicts trample with a warning.
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*/
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static addSource(key: string, callback: SourceCallback): {remove: () => void} {
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return this._addSource(key, callback, BugReporting._extraSources);
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}
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/**
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* Maps a string key to a simple callback that should return a string payload to be attached
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* to a bug report. Source callbacks are called when `collectExtraData` is called.
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*
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* Returns an object to remove the source when the component unmounts.
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*
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* Conflicts trample with a warning.
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*/
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static addFileSource(key: string, callback: SourceCallback): {remove: () => void} {
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return this._addSource(key, callback, BugReporting._fileSources);
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}
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static _addSource(key: string, callback: SourceCallback, source: Map<string, SourceCallback>): {remove: () => void} {
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BugReporting._maybeInit();
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if (source.has(key)) {
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console.warn(`BugReporting.add* called multiple times for same key '${key}'`);
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}
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source.set(key, callback);
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return {remove: () => { source.delete(key); }};
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}
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/**
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* This can be called from a native bug reporting flow, or from JS code.
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*
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* If available, this will call `NativeModules.BugReporting.setExtraData(extraData)`
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* after collecting `extraData`.
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*/
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static collectExtraData(): DebugData {
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const extraData: ExtraData = {};
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for (const [key, callback] of BugReporting._extraSources) {
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extraData[key] = callback();
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}
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const fileData: ExtraData = {};
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for (const [key, callback] of BugReporting._fileSources) {
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fileData[key] = callback();
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}
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infoLog('BugReporting extraData:', extraData);
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const BugReportingNativeModule = require('NativeModules').BugReporting;
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BugReportingNativeModule &&
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BugReportingNativeModule.setExtraData &&
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BugReportingNativeModule.setExtraData(extraData, fileData);
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return { extras: extraData, files: fileData };
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}
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}
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module.exports = BugReporting;
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