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Deno.FsFile.prototype.write - Deno documentation
method Deno.FsFile.prototype.write
FsFile.prototype.write(p: Uint8Array): Promise<number>

Write the contents of the array buffer (p) to the file.

Resolves to the number of bytes written.

It is not guaranteed that the full buffer will be written in a single call.

const encoder = new TextEncoder();
const data = encoder.encode("Hello world");
using file = await Deno.open("/foo/bar.txt", { write: true });
const bytesWritten = await file.write(data); // 11

Parameters

p: Uint8Array

Return Type

Promise<number>