message: fix(chunk): materialize empty chunk
diff: @@ -263,6 +263,10 @@ export class Empty<A> extends ChunkInternal<A> {
  super()
  }
  + materialize() {
  + return array_([])
  + }
  +
  copyToArray(_n: number, _array: Array<A> | Uint8Array) {
  // no-op
  }
  