24 lines
602 B
TypeScript
24 lines
602 B
TypeScript
/// <reference path='./window.extension.d.ts'/>
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// #docregion
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import {Pipe, PipeTransform} from 'angular2/core';
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// #docregion pipe-metadata
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@Pipe({
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name: 'fetch',
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pure: false
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})
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// #enddocregion pipe-metadata
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export class FetchJsonPipe implements PipeTransform{
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private fetchedValue:any;
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private fetchPromise:Promise<any>;
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transform(value:string, args:string[]):any {
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if (!this.fetchPromise) {
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this.fetchPromise = window.fetch(value)
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.then((result:any) => result.json())
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.then((json:any) => this.fetchedValue = json);
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}
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return this.fetchedValue;
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}
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} |