locutus/golang/strconv/ParseInt.js

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

"use strict";
Object.defineProperty(exports, "__esModule", { value: true });
exports.ParseInt = ParseInt;
function ParseInt(s, base, _bitSize) {
    //      discuss at: https://locutus.io/golang/strconv/ParseInt
    // parity verified: Go 1.23
    //     original by: Kevin van Zonneveld (https://kvz.io)
    //          note 1: Interprets a string s in the given base (0, 2 to 36).
    //          note 1: Returns [value, null] on success, [0, error] on failure.
    //       example 1: ParseInt('42', 10, 64)[0]
    //       returns 1: 42
    //       example 2: ParseInt('ff', 16, 64)[0]
    //       returns 2: 255
    //       example 3: ParseInt('1010', 2, 64)[0]
    //       returns 3: 10
    s = (s + '').trim();
    base = Number.parseInt(String(base), 10) || 10;
    if (base < 2 || base > 36) {
        return [0, new Error('strconv.ParseInt: invalid base ' + base)];
    }
    const result = parseInt(s, base);
    if (isNaN(result)) {
        return [0, new Error('strconv.ParseInt: parsing "' + s + '": invalid syntax')];
    }
    return [result, null];
}