Run results for: Array of strings | Some vs Includes (+ spread)

Run details:

User agent: Mozilla/5.0 (Android 16; Mobile; rv:149.0) Gecko/149.0 Firefox/149.0

Browser: Firefox Mobile 149

Operating system: Android

Device Platform: Mobile

Date tested: 3 months ago

Some

20.3M/s

Includes

17.2M/s

Includes + spread (when TypeScript readonly)

6.7M/s

View exact numbers

Test name	Executions per second
✓ Some	20,349,758 Ops/sec
Includes	17,158,466 Ops/sec
Includes + spread (when TypeScript readonly)	6,720,569 Ops/sec

Script Preparation code:

// Preparation: create an array of 10 string values
const values = [
  "alpha", "bravo", "charlie", "delta", "echo",
  "foxtrot", "golf", "hotel", "india", "juliet"
];

// Function to pick a random string from the array
function getRandomValue() {
  const index = Math.floor(Math.random() * values.length);
  return values[index];
}

Tests:

Some
const target = getRandomValue(); const found = values.some(v => v === target);
Includes
const target = getRandomValue(); const found = values.includes(target);
Includes + spread (when TypeScript readonly)
const target = getRandomValue(); const found = [...values].includes(target);