function Deno.readAllDeprecatedDeprecatedUse readAll from std/streams/conversion.ts instead. Deno.readAll will be removed in the future. DeprecatedUse readAll from std/streams/conversion.ts instead. Deno.readAll will be removed in the future. readAll(r: Reader): Promise<Uint8Array>Read Reader r until EOF (null) and resolve to the content as Uint8Array`. Read Reader r until EOF (null) and resolve to the content as Uint8Array`. Parametersr: ReaderReturnsPromise<Uint8Array>