36 lines
1.3 KiB
TypeScript
36 lines
1.3 KiB
TypeScript
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import { TranslateLoader } from '@ngx-translate/core';
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import { HttpClient } from '@angular/common/http';
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import { map } from 'rxjs/operators/';
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/**
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* Translation loader that replaces empty strings with nothing.
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*
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* ngx-translate-extract writes empty strings into json files.
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* The problem is that these empty strings don't trigger
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* the MissingTranslationHandler - they are simply empty strings...
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*
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*/
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export class PruningTranslationLoader implements TranslateLoader {
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constructor(private http: HttpClient, private prefix: string = '/assets/i18n/', private suffix: string = '.json') {}
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public getTranslation(lang: string): any {
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return this.http.get(`${this.prefix}${lang}${this.suffix}`).pipe(map((res: Object) => this.process(res)));
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}
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private process(object: any) {
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const newObject = {};
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for (const key in object) {
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if (object.hasOwnProperty(key)) {
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if (typeof object[key] === 'object') {
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newObject[key] = this.process(object[key]);
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} else if (typeof object[key] === 'string' && object[key] === '') {
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// do not copy empty strings
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} else {
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newObject[key] = object[key];
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}
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}
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}
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return newObject;
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}
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}
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