A Buffer view over a TypedArray and the original share an ArrayBuffer. Why can Buffer.prototype.slice (legacy semantics) be a footgun compared to Uint8Array.prototype.slice?
const u = new Uint8Array([1,2,3,4]);
const b = Buffer.from(u.buffer);
const s = b.slice(1, 3);
s[0] = 99;
console.log(u[1]);