locutus/perl/core/chr.js

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

"use strict";
Object.defineProperty(exports, "__esModule", { value: true });
exports.chr = chr;
function chr(code) {
    //      discuss at: https://locutus.io/perl/chr/
    // parity verified: Perl 5.40
    //     original by: Kevin van Zonneveld (https://kvz.io)
    //       example 1: chr(65)
    //       returns 1: 'A'
    //       example 2: chr(97)
    //       returns 2: 'a'
    //       example 3: chr(9731)
    //       returns 3: '☃'
    const normalized = Math.trunc(Number(code));
    if (!Number.isFinite(normalized) || normalized < 0 || normalized > 0x10ffff) {
        return '';
    }
    return String.fromCodePoint(normalized);
}