Run results for: Is odd package vs simple function

Run details:

User agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10.15; rv:109.0) Gecko/20100101 Firefox/117.0

Browser: Firefox 117

Operating system: Mac OS X 10.15

Device Platform: Desktop

Date tested: one year ago

Test name	Executions per second
is-odd package	1417727.0 Ops/sec
simple function	4452732.0 Ops/sec
manually inlined	5044005.0 Ops/sec

Script Preparation code:

function isNumber(num) {
  if (typeof num === 'number') {
    return num - num === 0;
  }
  if (typeof num === 'string' && num.trim() !== '') {
    return Number.isFinite ? Number.isFinite(+num) : isFinite(+num);
  }
  return false;
};

var isOdd = (value) => {
  const n = Math.abs(value);
  if (!isNumber(n)) {
    throw new TypeError('expected a number');
  }
  if (!Number.isInteger(n)) {
    throw new Error('expected an integer');
  }
  if (!Number.isSafeInteger(n)) {
    throw new Error('value exceeds maximum safe integer');
  }
  return (n % 2) === 1;
};

var isOdd2 = (v) => ((v | 0) === v && v % 2 === 1);

var testData = Array.from({length: 40}, () => Math.floor(Math.random() * 40));

Tests:

is-odd package
let odd = 0 for (const v of testData) { if (isOdd(v)) odd++ }
simple function
let odd = 0 for (const v of testData) { if (isOdd2(v)) odd++ }
manually inlined
let odd = 0 for (const v of testData) { if ((v|0) === v && (v%2) === 1) odd++; }

Run results for: Is odd package vs simple function

The "is-odd" package is weird but how much slower is it?

is-odd package

simple function

manually inlined