byte-rw/dist/utils/copy.js

Byte reader/writer for buffers and streams in typescript/javascript

export function copy(src, dst) {
    // Thanks for technique shown by stack overflow user Gleno
    // https://stackoverflow.com/a/22114687
    console.assert(src.byteLength === dst.byteLength);
    const dst_u8 = new Uint8Array(dst.buffer, dst.byteOffset, dst.byteLength);
    const src_u8 = new Uint8Array(src.buffer, src.byteOffset, src.byteLength);
    dst_u8.set(src_u8);
}