@mswjs/interceptors/src/interceptors/XMLHttpRequest/utils/concatArrayBuffer.ts

Low-level HTTP/HTTPS/XHR/fetch request interception library.

/**
 * Concatenate two `Uint8Array` buffers.
 */
export function concatArrayBuffer(
  left: Uint8Array,
  right: Uint8Array
): Uint8Array {
  const result = new Uint8Array(left.byteLength + right.byteLength)
  result.set(left, 0)
  result.set(right, left.byteLength)
  return result
}