front_end/testing/LocaleHelpers.ts

// Copyright 2025 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.

import * as i18n from '../core/i18n/i18n.js';
// eslint-disable-next-line @typescript-eslint/ban-ts-comment
// @ts-ignore TSC is not able to find type definitions but this error does not always happen
// eslint-disable-next-line  @devtools/es-modules-import
import EnUsLocaleData from '../core/i18n/locales/en-US.json' with {type : 'json'};

export async function initializeGlobalLocaleVars(): Promise<void> {
  // Expose the locale.
  i18n.DevToolsLocale.DevToolsLocale.instance({
    create: true,
    data: {
      navigatorLanguage: 'en-US',
      settingLanguage: 'en-US',
      lookupClosestDevToolsLocale: () => 'en-US',
    },
  });

  if (i18n.i18n.hasLocaleDataForTest('en-US')) {
    return;
  }

  i18n.i18n.registerLocaleDataForTest('en-US', EnUsLocaleData);
}

export function deinitializeGlobalLocaleVars(): void {
  i18n.DevToolsLocale.DevToolsLocale.removeInstance();
}

export function setupLocaleHooks(): void {
  beforeEach(async () => await initializeGlobalLocaleVars());
  afterEach(deinitializeGlobalLocaleVars);
}