es-toolkit/dist/array/windowed.js

A state-of-the-art, high-performance JavaScript utility library with a small bundle size and strong type annotations.

'use strict';

Object.defineProperty(exports, Symbol.toStringTag, { value: 'Module' });

function windowed(arr, size, step = 1, { partialWindows = false } = {}) {
    if (size <= 0 || !Number.isInteger(size)) {
        throw new Error('Size must be a positive integer.');
    }
    if (step <= 0 || !Number.isInteger(step)) {
        throw new Error('Step must be a positive integer.');
    }
    const result = [];
    const end = partialWindows ? arr.length : arr.length - size + 1;
    for (let i = 0; i < end; i += step) {
        result.push(arr.slice(i, i + size));
    }
    return result;
}

exports.windowed = windowed;