67 строки
1.6 KiB
JavaScript
67 строки
1.6 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 BridgeProfiling
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* @flow
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*/
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'use strict';
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var GLOBAL = GLOBAL || this;
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var TRACE_TAG_REACT_APPS = 1 << 17;
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var _enabled = false;
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var _ReactPerf = null;
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function ReactPerf() {
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if (!_ReactPerf) {
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_ReactPerf = require('ReactPerf');
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}
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return _ReactPerf;
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}
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var BridgeProfiling = {
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setEnabled(enabled: boolean) {
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_enabled = enabled;
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ReactPerf().enableMeasure = enabled;
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},
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profile(profileName?: any) {
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if (_enabled) {
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profileName = typeof profileName === 'function' ?
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profileName() : profileName;
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console.profile(TRACE_TAG_REACT_APPS, profileName);
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}
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},
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profileEnd() {
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if (_enabled) {
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console.profileEnd(TRACE_TAG_REACT_APPS);
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}
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},
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reactPerfMeasure(objName: string, fnName: string, func: any): any {
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return function (component) {
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if (!_enabled) {
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return func.apply(this, arguments);
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}
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var name = objName === 'ReactCompositeComponent' && this.getName() || '';
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BridgeProfiling.profile(`${objName}.${fnName}(${name})`);
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var ret = func.apply(this, arguments);
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BridgeProfiling.profileEnd();
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return ret;
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};
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},
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swizzleReactPerf() {
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ReactPerf().injection.injectMeasure(BridgeProfiling.reactPerfMeasure);
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},
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};
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module.exports = BridgeProfiling;
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