function readLongDeprecatedDeprecated(will be removed after 1.0.0) Use the [Web Streams API]https://developer.mozilla.org/en-US/docs/Web/API/Streams_API instead. import { readLong } from "https://deno.land/std@0.210.0/io/read_long.ts"; Deprecated(will be removed after 1.0.0) Use the [Web Streams API]https://developer.mozilla.org/en-US/docs/Web/API/Streams_API instead. readLong(buf: BufReader): Promise<number | null>Read big endian 64bit long from BufReader Parametersbuf: BufReaderReturnsPromise<number | null>