prepack/lib/intrinsics/ecma262/isNaN.js

Execute a JS bundle, serialize global state and side effects to a snapshot that can be quickly restored.

"use strict";

Object.defineProperty(exports, "__esModule", {
  value: true
});

exports.default = function (realm) {
  // ECMA262 18.2.3
  return new _index.NativeFunctionValue(realm, "isNaN", "isNaN", 1, (context, [number]) => {
    // 1. Let num be ? ToNumber(number).
    let num = _singletons.To.ToNumber(realm, number);

    // 2. If num is NaN, return true.
    if (isNaN(num)) return realm.intrinsics.true;

    // 3. Otherwise, return false.
    return realm.intrinsics.false;
  }, false);
};

var _index = require("../../values/index.js");

var _singletons = require("../../singletons.js");
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