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function Deno.copy

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"my_file.txt");
const buffer = new Deno.Buffer()
const bytesCopied1 = await Deno.copy(source, Deno.stdout);
const bytesCopied2 = await Deno.copy(source, buffer);


src: Reader

The source to copy from

dst: Writer

The destination to copy to

options: { bufSize?: number; }

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