type-challenges/scripts/locales.ts

export const defaultLocale = 'en'

export const supportedLocales = ['en', 'zh-CN', 'ja', 'ko'] as const

export const messages = {
  'en': require('./locales/en.json'),
  'zh-CN': require('./locales/zh-CN.json'),
  'ja': require('./locales/ja.json'),
  'ko': require('./locales/ko.json'),
}

export type SupportedLocale = keyof typeof messages

export function t(locale: SupportedLocale, key: string): string {
  const result = (messages[locale] && messages[locale][key]) || messages[defaultLocale][key]
  if (!result)
    throw new Error(`Missing message for key "${key}"`)
  return result
}

export function f(name: string, locale: string, ext: string) {
  if (locale === defaultLocale)
    return `${name}.${ext}`
  return `${name}.${locale}.${ext}`
}