codsenis-language-code
Is given string a language code (as per IANA)
Install
This package is pure ESM. If you're not ready yet, install an older version of this program, 3.1.0 (npm i is-language-code@3.1.0).
npm i is-language-code
Quick Take
import { strict as assert } from "assert";
import { isLangCode } from "is-language-code";
assert.deepEqual(isLangCode("de-419-DE"), {
res: false,
message: 'Two region subtags, "419" and "de".',
});
assert.deepEqual(isLangCode("sr-Latn"), {
res: true,
message: null,
});
Documentation
Please visit codsen.com for a full description of the API. Also, try the GUI playground.
Contributing
To report bugs or request features or assistance, raise an issue on GitHub.
Licence
MIT License.
Copyright © 2010-2025 Roy Revelt and other contributors.
