22 lines
928 B
TypeScript
22 lines
928 B
TypeScript
import { IApplication } from '@/domain/IApplication';
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import { AsyncLazy } from '@/infrastructure/Threading/AsyncLazy';
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import { IApplicationFactory } from './IApplicationFactory';
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import { parseApplication } from './Parser/ApplicationParser';
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export type ApplicationGetter = () => IApplication;
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const ApplicationGetter: ApplicationGetter = parseApplication;
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export class ApplicationFactory implements IApplicationFactory {
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public static readonly Current: IApplicationFactory = new ApplicationFactory(ApplicationGetter);
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private readonly getter: AsyncLazy<IApplication>;
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protected constructor(costlyGetter: ApplicationGetter) {
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if (!costlyGetter) {
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throw new Error('undefined getter');
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}
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this.getter = new AsyncLazy<IApplication>(() => Promise.resolve(costlyGetter()));
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}
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public getAppAsync(): Promise<IApplication> {
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return this.getter.getValueAsync();
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}
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}
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