method default.prototype.copyimport { default } from "https://deno.land/std@0.57.0/node/buffer.ts"; copy(targetBuffer: Buffer | Uint8Array,targetStart?,sourceStart?,sourceEnd?,): numberCopies data from a region of buf to a region in target, even if the target memory region overlaps with buf. ParameterstargetBuffer: Buffer | Uint8ArrayoptionaltargetStart = [UNSUPPORTED]optionalsourceStart = [UNSUPPORTED]optionalsourceEnd = [UNSUPPORTED]Returnsnumber