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Module

x/deno/std/io/ioutil.ts>readLong

A modern runtime for JavaScript and TypeScript.
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function readLong
import { readLong } from "https://deno.land/x/deno@v0.28.0/std/io/ioutil.ts";

Read big endian 64bit long from BufReader

Returns

Promise<number | Deno.EOF>