function bytes.indexOfimport { bytes } from "https://deno.land/x/aleph@v0.3.0-alpha.2/deps.ts"; const { indexOf } = bytes; indexOf(source: Uint8Array,pat: Uint8Array,start?,): numberFind first index of binary pattern from source. If not found, then return -1 Parameterssource: Uint8Arraysource array pat: Uint8Arraypattern to find in source array optionalstart = [UNSUPPORTED]the index to start looking in the source Returnsnumber