@fluent/langneg/esm/accepted_languages.js

Language Negotiation API for Fluent

export function acceptedLanguages(str = "") {
    if (typeof str !== "string") {
        throw new TypeError("Argument must be a string");
    }
    const tokens = str.split(",").map(t => t.trim());
    return tokens.filter(t => t !== "").map(t => t.split(";")[0]);
}