
The AppContext holds immortal singleton instances of services. It's a convenient way to provide singletons that can be swapped out for testing. Change-Id: I0bfde14e087cb75b634dac2bb9bb8e5be65f1b28
49 lines
1.2 KiB
JavaScript
49 lines
1.2 KiB
JavaScript
/**
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* @license
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* Copyright (C) 2020 The Android Open Source Project
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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/**
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* Flags service.
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*
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* Provides all related methods / properties regarding on feature flags.
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*/
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export class FlagsService {
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constructor() {
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// stores all enabled experiments
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this._experiments = new Set();
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this._loadExperiments();
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}
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/**
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* @param {string} experimentId
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* @returns {boolean}
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*/
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isEnabled(experimentId) {
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return this._experiments.has(experimentId);
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}
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_loadExperiments() {
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this._experiments = new Set(window.ENABLED_EXPERIMENTS);
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}
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/**
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* @returns {string[]} array of all enabled experiments.
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*/
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get enabledExperiments() {
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return [...this._experiments];
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}
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}
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