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Module

std/io/mod.ts>readRange

The Deno Standard Library
Latest
function readRange
Deprecated
Deprecated

This will be removed in 1.0.0. Use the Web Streams API instead.

import { readRange } from "https://deno.land/std@0.224.0/io/mod.ts";

Read a range of bytes from a file or other resource that is readable and seekable. The range start and end are inclusive of the bytes within that range.

import { assertEquals } from "https://deno.land/std@0.224.0/assert/assert_equals.ts";
import { readRange } from "https://deno.land/std@0.224.0/io/read_range.ts";

// Read the first 10 bytes of a file
const file = await Deno.open("example.txt", { read: true });
const bytes = await readRange(file, { start: 0, end: 9 });
assertEquals(bytes.length, 10);

Returns

Promise<Uint8Array>