import * as mod from "https://dotland.deno.dev/std@0.102.0/bytes/mod.ts"; FunctionsfconcatConcatenate multiple binary arrays and return new one. fcontainsCheck source array contains pattern array. fcopyCopy bytes from one Uint8Array to another. Bytes from src which don't fit into dst will not be copied. fendsWithCheck whether binary array ends with suffix. fequalsCheck whether binary arrays are equal to each other. findexOfFind first index of binary pattern from source. If not found, then return -1 flastIndexOfFind last index of binary pattern from source. If not found, then return -1. frepeatRepeat bytes. returns a new byte slice consisting of count copies of b. fstartsWithCheck whether binary array starts with prefix.