validateLanguageCode | /mod.ts | iso639_1@1.2.20090901

Type-safe ISO 639-1 language code (a.k.a. two-letter codes) for TypeScript

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function validateLanguageCode

import { validateLanguageCode } from "https://deno.land/x/iso639_1@1.2.20090901/mod.ts";

validateLanguageCode(code: string | null | undefined): asserts code is LanguageCode

Asserts that the given string is a valid language code. If the given string is not a valid language code, an InvalidLanguageCodeError is thrown.

Parameters

code: string | null | undefined

The string expected to be a language code.

asserts code is LanguageCode