blob: 9767d1a43f398ca701588df4a52c219b1bd6da6e [file] [log] [blame]
/**
* @license
* Copyright (C) 2020 The Android Open Source Project
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
import {FlagsService} from './flags';
import {Finalizable} from '../registry';
declare global {
interface Window {
ENABLED_EXPERIMENTS?: string[];
}
}
/**
* Flags service.
*
* Provides all related methods / properties regarding on feature flags.
*/
export class FlagsServiceImplementation implements FlagsService, Finalizable {
private readonly _experiments: Set<string>;
constructor() {
// stores all enabled experiments
this._experiments = this._loadExperiments();
}
finalize() {}
isEnabled(experimentId: string): boolean {
return this._experiments.has(experimentId);
}
_loadExperiments(): Set<string> {
return new Set(window.ENABLED_EXPERIMENTS ?? []);
}
get enabledExperiments() {
return [...this._experiments];
}
}