function concatimport { concat } from "https://dotland.deno.dev/std@0.79.0/bytes/mod.ts"; concat(origin: Uint8Array, b: Uint8Array): Uint8ArrayConcatenate two binary arrays and return new one. Parametersorigin: Uint8Arrayorigin array to concatenate b: Uint8Arrayarray to concatenate with origin ReturnsUint8Array