express-intlayer/dist/esm/index.mjs.map

Manage internationalization i18n in a simple way for express application.

{"version":3,"file":"index.mjs","names":["negotiatorHeaders: Record<string, string>","t","getIntlayer: typeof getIntlayerFunction","getIntlayerFunction","getDictionary: typeof getDictionaryFunction","getDictionaryFunction","getIntlayer","getDictionary"],"sources":["../../src/index.ts"],"sourcesContent":["import { prepareIntlayer } from '@intlayer/chokidar';\nimport { getConfiguration } from '@intlayer/config';\nimport {\n  getDictionary as getDictionaryFunction,\n  getIntlayer as getIntlayerFunction,\n  getLocaleFromStorage,\n  getTranslation,\n  localeDetector,\n} from '@intlayer/core';\nimport type { Locale, StrictModeLocaleMap } from '@intlayer/types';\nimport { createNamespace } from 'cls-hooked';\nimport type { NextFunction, Request, RequestHandler, Response } from 'express';\n\nconst configuration = getConfiguration();\nconst { internationalization } = configuration;\n\n/**\n * Retrieves the locale from storage (cookies, localStorage, sessionStorage).\n */\nconst getStorageLocale = (req: Request): Locale | undefined =>\n  getLocaleFromStorage({\n    getCookie: (name: string) => req.cookies?.[name],\n    getHeader: (name: string) => req.headers?.[name] as string | undefined,\n  });\n\nconst appNamespace = createNamespace('app');\n\nprepareIntlayer(configuration);\n\nexport const translateFunction =\n  (_req: Request, res: Response, _next?: NextFunction) =>\n  <T extends string>(\n    content: StrictModeLocaleMap<T> | string,\n    locale?: Locale\n  ): T => {\n    const { locale: currentLocale, defaultLocale } = res.locals as {\n      locale: Locale;\n      defaultLocale: Locale;\n    };\n\n    const targetLocale = locale ?? currentLocale;\n\n    if (typeof content === 'undefined') {\n      return '' as unknown as T;\n    }\n\n    if (typeof content === 'string') {\n      return content as unknown as T;\n    }\n\n    if (\n      typeof content?.[\n        targetLocale as unknown as keyof StrictModeLocaleMap<T>\n      ] === 'undefined'\n    ) {\n      if (\n        typeof content?.[\n          defaultLocale as unknown as keyof StrictModeLocaleMap<T>\n        ] === 'undefined'\n      ) {\n        return content as unknown as T;\n      } else {\n        return getTranslation(content, defaultLocale);\n      }\n    }\n\n    return getTranslation(content, targetLocale);\n  };\n\n/**\n * Detect locale used by the user and load it into res locale storage\n *\n * @returns\n */\nexport const intlayer = (): RequestHandler => async (req, res, next) => {\n  // Detect if locale is set by intlayer frontend lib in the headers\n  const localeFromStorage = getStorageLocale(req);\n  // Interpret browser locale\n\n  const negotiatorHeaders: Record<string, string> = {};\n\n  // // Check if req.headers exists and is an object\n  if (req && typeof req.headers === 'object') {\n    // Copy all headers from the request to negotiatorHeaders\n    for (const key in req.headers) {\n      if (typeof req.headers[key] === 'string') {\n        negotiatorHeaders[key] = req.headers[key];\n      }\n    }\n  }\n\n  const localeDetected = localeDetector(\n    negotiatorHeaders,\n    internationalization.locales,\n    internationalization.defaultLocale\n  );\n\n  res.locals.locale_storage = localeFromStorage;\n  res.locals.locale_detected = localeDetected;\n  res.locals.locale = localeFromStorage ?? localeDetected;\n  res.locals.defaultLocale = internationalization.defaultLocale;\n\n  const t = translateFunction(req, res, next);\n\n  const getIntlayer: typeof getIntlayerFunction = (\n    key,\n    localeArg = localeDetected as Parameters<typeof getIntlayerFunction>[1],\n    ...props\n  ) => getIntlayerFunction(key, localeArg, ...props);\n\n  const getDictionary: typeof getDictionaryFunction = (\n    key,\n    localeArg = localeDetected as Parameters<typeof getDictionaryFunction>[1],\n    ...props\n  ) => getDictionaryFunction(key, localeArg, ...props);\n\n  res.locals.t = t;\n  res.locals.getIntlayer = getIntlayer;\n  res.locals.getDictionary = getDictionary;\n\n  appNamespace.run(() => {\n    appNamespace.set('t', t);\n    appNamespace.set('getIntlayer', getIntlayer);\n    appNamespace.set('getDictionary', getDictionary);\n\n    next();\n  });\n};\n\nexport const t = <Content = string>(\n  content: StrictModeLocaleMap<Content>,\n  locale?: Locale\n): Content => {\n  try {\n    if (typeof appNamespace === 'undefined') {\n      throw new Error(\n        'Intlayer is not initialized. Add the `app.use(intlayer());` middleware before using this function.'\n      );\n    }\n\n    if (typeof appNamespace.get('t') !== 'function') {\n      throw new Error(\n        'Using the import { t } from \"express-intlayer\" is not supported in your environment. Use the res.locals.t syntax instead.'\n      );\n    }\n\n    return appNamespace.get('t')(content, locale);\n  } catch (error) {\n    if (process.env.NODE_ENV === 'development') {\n      console.error((error as Error).message);\n    }\n\n    return getTranslation(\n      content,\n      locale ?? internationalization.defaultLocale\n    );\n  }\n};\n\nexport const getIntlayer: typeof getIntlayerFunction = (...args) => {\n  try {\n    if (typeof appNamespace === 'undefined') {\n      throw new Error(\n        'Intlayer is not initialized. Add the `app.use(intlayer());` middleware before using this function.'\n      );\n    }\n\n    if (typeof appNamespace.get('getIntlayer') !== 'function') {\n      throw new Error(\n        'Using the import { t } from \"express-intlayer\" is not supported in your environment. Use the res.locals.t syntax instead.'\n      );\n    }\n\n    return appNamespace.get('getIntlayer')(...args);\n  } catch (error) {\n    if (process.env.NODE_ENV === 'development') {\n      console.error((error as Error).message);\n    }\n    return getIntlayerFunction(...args);\n  }\n};\n\nexport const getDictionary: typeof getDictionaryFunction = (...args) => {\n  try {\n    if (typeof appNamespace === 'undefined') {\n      throw new Error(\n        'Intlayer is not initialized. Add the `app.use(intlayer());` middleware before using this function.'\n      );\n    }\n\n    if (typeof appNamespace.get('getDictionary') !== 'function') {\n      throw new Error(\n        'Using the import { t } from \"express-intlayer\" is not supported in your environment. Use the res.locals.t syntax instead.'\n      );\n    }\n\n    return appNamespace.get('getDictionary')(...args);\n  } catch (error) {\n    if (process.env.NODE_ENV === 'development') {\n      console.error((error as Error).message);\n    }\n    return getDictionaryFunction(...args);\n  }\n};\n"],"mappings":";;;;;;AAaA,MAAM,gBAAgB,kBAAkB;AACxC,MAAM,EAAE,yBAAyB;;;;AAKjC,MAAM,oBAAoB,QACxB,qBAAqB;CACnB,YAAY,SAAiB,IAAI,UAAU;CAC3C,YAAY,SAAiB,IAAI,UAAU;CAC5C,CAAC;AAEJ,MAAM,eAAe,gBAAgB,MAAM;AAE3C,gBAAgB,cAAc;AAE9B,MAAa,qBACV,MAAe,KAAe,WAE7B,SACA,WACM;CACN,MAAM,EAAE,QAAQ,eAAe,kBAAkB,IAAI;CAKrD,MAAM,eAAe,UAAU;AAE/B,KAAI,OAAO,YAAY,YACrB,QAAO;AAGT,KAAI,OAAO,YAAY,SACrB,QAAO;AAGT,KACE,OAAO,UACL,kBACI,YAEN,KACE,OAAO,UACL,mBACI,YAEN,QAAO;KAEP,QAAO,eAAe,SAAS,cAAc;AAIjD,QAAO,eAAe,SAAS,aAAa;;;;;;;AAQhD,MAAa,iBAAiC,OAAO,KAAK,KAAK,SAAS;CAEtE,MAAM,oBAAoB,iBAAiB,IAAI;CAG/C,MAAMA,oBAA4C,EAAE;AAGpD,KAAI,OAAO,OAAO,IAAI,YAAY,UAEhC;OAAK,MAAM,OAAO,IAAI,QACpB,KAAI,OAAO,IAAI,QAAQ,SAAS,SAC9B,mBAAkB,OAAO,IAAI,QAAQ;;CAK3C,MAAM,iBAAiB,eACrB,mBACA,qBAAqB,SACrB,qBAAqB,cACtB;AAED,KAAI,OAAO,iBAAiB;AAC5B,KAAI,OAAO,kBAAkB;AAC7B,KAAI,OAAO,SAAS,qBAAqB;AACzC,KAAI,OAAO,gBAAgB,qBAAqB;CAEhD,MAAMC,MAAI,kBAAkB,KAAK,KAAK,KAAK;CAE3C,MAAMC,iBACJ,KACA,YAAY,gBACZ,GAAG,UACAC,cAAoB,KAAK,WAAW,GAAG,MAAM;CAElD,MAAMC,mBACJ,KACA,YAAY,gBACZ,GAAG,UACAC,gBAAsB,KAAK,WAAW,GAAG,MAAM;AAEpD,KAAI,OAAO,IAAIJ;AACf,KAAI,OAAO,cAAcK;AACzB,KAAI,OAAO,gBAAgBC;AAE3B,cAAa,UAAU;AACrB,eAAa,IAAI,KAAKN,IAAE;AACxB,eAAa,IAAI,eAAeK,cAAY;AAC5C,eAAa,IAAI,iBAAiBC,gBAAc;AAEhD,QAAM;GACN;;AAGJ,MAAa,KACX,SACA,WACY;AACZ,KAAI;AACF,MAAI,OAAO,iBAAiB,YAC1B,OAAM,IAAI,MACR,qGACD;AAGH,MAAI,OAAO,aAAa,IAAI,IAAI,KAAK,WACnC,OAAM,IAAI,MACR,8HACD;AAGH,SAAO,aAAa,IAAI,IAAI,CAAC,SAAS,OAAO;UACtC,OAAO;AAEZ,UAAQ,MAAO,MAAgB,QAAQ;AAGzC,SAAO,eACL,SACA,UAAU,qBAAqB,cAChC;;;AAIL,MAAaL,eAA2C,GAAG,SAAS;AAClE,KAAI;AACF,MAAI,OAAO,iBAAiB,YAC1B,OAAM,IAAI,MACR,qGACD;AAGH,MAAI,OAAO,aAAa,IAAI,cAAc,KAAK,WAC7C,OAAM,IAAI,MACR,8HACD;AAGH,SAAO,aAAa,IAAI,cAAc,CAAC,GAAG,KAAK;UACxC,OAAO;AAEZ,UAAQ,MAAO,MAAgB,QAAQ;AAEzC,SAAOC,cAAoB,GAAG,KAAK;;;AAIvC,MAAaC,iBAA+C,GAAG,SAAS;AACtE,KAAI;AACF,MAAI,OAAO,iBAAiB,YAC1B,OAAM,IAAI,MACR,qGACD;AAGH,MAAI,OAAO,aAAa,IAAI,gBAAgB,KAAK,WAC/C,OAAM,IAAI,MACR,8HACD;AAGH,SAAO,aAAa,IAAI,gBAAgB,CAAC,GAAG,KAAK;UAC1C,OAAO;AAEZ,UAAQ,MAAO,MAAgB,QAAQ;AAEzC,SAAOC,gBAAsB,GAAG,KAAK"}