如何衡量文本在Javascript中占用的空间？

const text = "Hello, world!";
const length = text.length;
console.log(`The length of the text is ${length}`);

The length of the text is 13

const text = "Hello, world!";
const byteLength = Buffer.byteLength(text, "utf8");
console.log(`The byte length of the text is ${byteLength}`);

The byte length of the text is 13