function Deno.readAllSync DeprecatedThis will be removed in Deno 2.0. See the Deno 1.x to 2.x Migration Guide for migration instructions. readAllSync(r: ReaderSync): Uint8Array Synchronously reads Reader r until EOF (null) and returns the content as Uint8Array. Synchronously reads Reader r until EOF (null) and returns the content as Uint8Array. Parameters r: ReaderSync Return Type Uint8Array