Allow retrieval from languageHashes using environment (#2702)

src/ngx-translate-loaders/translate-browser.loader.ts

@@ -34,7 +34,7 @@ export class TranslateBrowserLoader implements TranslateLoader {
     if (hasValue(messages)) {
       return observableOf(messages);
     } else {
-      const translationHash: string = environment.production ? `.${(process.env.languageHashes as any)[lang + '.json5']}` : '';
+      const translationHash: string = environment.production ? `.${(environment['languageHashes'] !== undefined ? environment['languageHashes'] : process.env.languageHashes as any)[lang + '.json5']}` : '';
       // If they're not available on the transfer state (e.g. when running in dev mode), retrieve
       // them using HttpClient
       return this.http.get(`${this.prefix}${lang}${translationHash}${this.suffix}`, { responseType: 'text' }).pipe(

src/ngx-translate-loaders/translate-server.loader.ts

@@ -3,6 +3,7 @@ import { Observable, of as observableOf } from 'rxjs';
 import { readFileSync } from 'fs';
 import { TransferState } from '@angular/platform-browser';
 import { NGX_TRANSLATE_STATE, NgxTranslateState } from './ngx-translate-state';
+import { environment } from "../environments/environment";
 
 /**
  * A TranslateLoader for ngx-translate to parse json5 files server-side, and store them in the
@@ -23,7 +24,7 @@ export class TranslateServerLoader implements TranslateLoader {
    * @param lang the language code
    */
   public getTranslation(lang: string): Observable<any> {
-    const translationHash: string = (process.env.languageHashes as any)[lang + '.json5'];
+    const translationHash: string = (environment['languageHashes'] !== undefined ? environment['languageHashes'] : process.env.languageHashes  as any)[lang + '.json5'];
     // Retrieve the file for the given language, and parse it
     const messages = JSON.parse(readFileSync(`${this.prefix}${lang}.${translationHash}${this.suffix}`, 'utf8'));
     // Store the parsed messages in the transfer state so they'll be available immediately when the