Turn an array into an array of arrays...to batch process some data.

batcherize.js

function batcherize(batchSize, unbatchedData) {
	const batchedData = [];
	const batchNumber = Math.ceil(unbatchedData.length/batchSize)
	
	for (let batchIndex = 0; batchIndex < batchNumber; batchIndex++) {
		const currentBatchPosition = (batchIndex * batchSize);
		const currentBatchOffset = currentBatchPosition + (batchSize);
		const currentBatchData = unbatchedData.slice(currentBatchPosition, currentBatchOffset);

		batchedData.push(currentBatchData);
	}

	return batchedData;
}