Number Parsing

Zeus exposes JavaScript’s global number helpers. They are ambient — available in every module with no import, like console and Math.

console.log(parseInt("42"));        // 42
console.log(parseInt("  -17px"));   // -17  (leading numeric prefix)
console.log(parseInt("0xFF"));      // 255  (0x prefix -> base 16)
console.log(parseFloat("3.14abc")); // 3.14
console.log(parseFloat("1e3"));     // 1000

if (isNaN(parseInt("hello"))) {
  console.log("not a number");
}

Reference

parseInt(s: string): f64      // JS-lenient; 0x prefix -> hex; NaN if no digits
parseFloat(s: string): f64    // JS-lenient leading numeric prefix; NaN if none
isNaN(x: f64): boolean
isFinite(x: f64): boolean

Both parsers return f64 (JavaScript’s Number) so a failed parse can be represented as NaN:

let n: f64 = parseInt("nope");
if (isNaN(n)) { /* handle */ }