byte-counter/utilities.js

Count bytes passing through a stream

const textEncoder = new TextEncoder();

export function byteLength(data) {
	if (typeof data === 'string') {
		return textEncoder.encode(data).byteLength;
	}

	if (ArrayBuffer.isView(data) || data instanceof ArrayBuffer || data instanceof SharedArrayBuffer) {
		return data.byteLength;
	}

	return 0;
}