@validatem/core/src/split-array.js

The last validation library you'll ever need.

"use strict";

// FIXME: Move this into its own package

module.exports = function splitArray(array, indexes) {
	let segments = [];
	let lastIndex = 0;

	for (let index of indexes) {
		if (index < array.length) {
			segments.push(array.slice(lastIndex, index));
			lastIndex = index;
		} else {
			throw new Error(`Attempted to split at index ${index}, but array only has ${array.length} items`);
		}
	}

	// Final segment, from last specified index to end of array; this is because the indexes only define the *split points*, and so the total amount of segments is always one more than that.
	segments.push(array.slice(lastIndex));

	return segments;
};