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

Manage internationalization i18n in a simple way for express application.

{"version":3,"sources":["../../src/index.ts"],"sourcesContent":["import { createModuleAugmentation } from '@intlayer/chokidar';\nimport { type Locales, getConfiguration } from '@intlayer/config';\nimport {\n  getTranslation,\n  localeDetector,\n  type LanguageContent,\n} from '@intlayer/core';\nimport { createNamespace } from 'cls-hooked';\nimport type { NextFunction, RequestHandler, Request, Response } from 'express';\n\nconst { middleware, internationalization } = getConfiguration({\n  verbose: true,\n});\nconst { headerName, cookieName } = middleware;\n\nconst appNamespace = createNamespace('app');\n\ncreateModuleAugmentation();\n\nexport const translateFunction =\n  (_req: Request, res: Response, _next?: NextFunction) =>\n  <T extends string>(\n    content: LanguageContent<T> | string,\n    locale?: Locales\n  ): T => {\n    const { locale: currentLocale, defaultLocale } = res.locals as {\n      locale: Locales;\n      defaultLocale: Locales;\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?.[targetLocale as unknown as keyof LanguageContent<T>] ===\n      'undefined'\n    ) {\n      if (\n        typeof content?.[\n          defaultLocale as unknown as keyof LanguageContent<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 => (req, res, next) => {\n  // Detect if locale is set by intlayer frontend lib in the cookies\n  const localeCookie = req.cookies?.[cookieName];\n  // Detect if locale is set by intlayer frontend lib in the headers\n  const localeHeader = req.headers?.[headerName];\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_header = localeHeader;\n  res.locals.locale_cookie = localeCookie;\n  res.locals.locale_detected = localeDetected;\n  res.locals.locale = localeCookie ?? localeHeader ?? localeDetected;\n  res.locals.defaultLocale = internationalization.defaultLocale;\n\n  const t = translateFunction(req, res, next);\n  res.locals.t = t;\n\n  appNamespace.run(() => {\n    appNamespace.set('t', t);\n\n    next();\n  });\n};\n\nexport const t = <Content = string>(\n  content: LanguageContent<Content>,\n  locale?: Locales\n): Content => appNamespace.get('t')(content, locale);\n\nexport { LanguageContent };\n"],"mappings":"AAAA,SAAS,gCAAgC;AACzC,SAAuB,wBAAwB;AAC/C;AAAA,EACE;AAAA,EACA;AAAA,OAEK;AACP,SAAS,uBAAuB;AAGhC,MAAM,EAAE,YAAY,qBAAqB,IAAI,iBAAiB;AAAA,EAC5D,SAAS;AACX,CAAC;AACD,MAAM,EAAE,YAAY,WAAW,IAAI;AAEnC,MAAM,eAAe,gBAAgB,KAAK;AAE1C,yBAAyB;AAElB,MAAM,oBACX,CAAC,MAAe,KAAe,UAC/B,CACE,SACA,WACM;AACN,QAAM,EAAE,QAAQ,eAAe,cAAc,IAAI,IAAI;AAKrD,QAAM,eAAe,UAAU;AAE/B,MAAI,OAAO,YAAY,aAAa;AAClC,WAAO;AAAA,EACT;AAEA,MAAI,OAAO,YAAY,UAAU;AAC/B,WAAO;AAAA,EACT;AAEA,MACE,OAAO,UAAU,YAAmD,MACpE,aACA;AACA,QACE,OAAO,UACL,aACF,MAAM,aACN;AACA,aAAO;AAAA,IACT,OAAO;AACL,aAAO,eAAe,SAAS,aAAa;AAAA,IAC9C;AAAA,EACF;AAEA,SAAO,eAAe,SAAS,YAAY;AAC7C;AAOK,MAAM,WAAW,MAAsB,CAAC,KAAK,KAAK,SAAS;AAEhE,QAAM,eAAe,IAAI,UAAU,UAAU;AAE7C,QAAM,eAAe,IAAI,UAAU,UAAU;AAG7C,QAAM,oBAA4C,CAAC;AAGnD,MAAI,OAAO,OAAO,IAAI,YAAY,UAAU;AAE1C,eAAW,OAAO,IAAI,SAAS;AAC7B,UAAI,OAAO,IAAI,QAAQ,GAAG,MAAM,UAAU;AACxC,0BAAkB,GAAG,IAAI,IAAI,QAAQ,GAAG;AAAA,MAC1C;AAAA,IACF;AAAA,EACF;AAEA,QAAM,iBAAiB;AAAA,IACrB;AAAA,IACA,qBAAqB;AAAA,IACrB,qBAAqB;AAAA,EACvB;AAEA,MAAI,OAAO,gBAAgB;AAC3B,MAAI,OAAO,gBAAgB;AAC3B,MAAI,OAAO,kBAAkB;AAC7B,MAAI,OAAO,SAAS,gBAAgB,gBAAgB;AACpD,MAAI,OAAO,gBAAgB,qBAAqB;AAEhD,QAAMA,KAAI,kBAAkB,KAAK,KAAK,IAAI;AAC1C,MAAI,OAAO,IAAIA;AAEf,eAAa,IAAI,MAAM;AACrB,iBAAa,IAAI,KAAKA,EAAC;AAEvB,SAAK;AAAA,EACP,CAAC;AACH;AAEO,MAAM,IAAI,CACf,SACA,WACY,aAAa,IAAI,GAAG,EAAE,SAAS,MAAM;","names":["t"]}