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function Deno.copy
Deprecated
Deprecated

Use copy from https://deno.land/std/streams/conversion.ts instead. Deno.copy will be removed in Deno 2.0.

Copies from src to dst until either EOF (null) is read from src or an error occurs. It resolves to the number of bytes copied or rejects with the first error encountered while copying.

const source = await Deno.open("my_file.txt");
const bytesCopied1 = await Deno.copy(source, Deno.stdout);
const destination = await Deno.create("my_file_2.txt");
const bytesCopied2 = await Deno.copy(source, destination);

Parameters

src: Reader

The source to copy from

dst: Writer

The destination to copy to

optional
options: { bufSize?: number; }

Can be used to tune size of the buffer. Default size is 32kB

Returns

Promise<number>