locutus/esm/perl/core/join.js

Locutus other languages' standard libraries to JavaScript for fun and educational purposes

export function join(separator, ...parts) {
    //      discuss at: https://locutus.io/perl/join/
    // parity verified: Perl 5.40
    //     original by: Kevin van Zonneveld (https://kvz.io)
    //          note 1: Joins list values with separator (Perl-style list semantics).
    //       example 1: join('-', 'a', 'b', 'c')
    //       returns 1: 'a-b-c'
    //       example 2: join(' / ', 'usr', 'local', 'bin')
    //       returns 2: 'usr / local / bin'
    //       example 3: join('', 'a', 'b', 'c')
    //       returns 3: 'abc'
    const glue = String(separator);
    const values = parts.length === 1 && Array.isArray(parts[0]) ? parts[0] : parts;
    return values.map((value) => String(value)).join(glue);
}