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// Copyright 2018-2024 the Deno authors. All rights reserved. MIT license.
// Forked from https://github.com/DefinitelyTyped/DefinitelyTyped/blob/d9df51e34526f48bef4e2546a006157b391ad96c/types/node/fs.d.ts
import { ErrnoException } from "ext:deno_node/_global.d.ts";
/**
* Write an array of `ArrayBufferView`s to the file specified by `fd` using`writev()`.
*
* `position` is the offset from the beginning of the file where this data
* should be written. If `typeof position !== 'number'`, the data will be written
* at the current position.
*
* The callback will be given three arguments: `err`, `bytesWritten`, and`buffers`. `bytesWritten` is how many bytes were written from `buffers`.
*
* If this method is `util.promisify()` ed, it returns a promise for an`Object` with `bytesWritten` and `buffers` properties.
*
* It is unsafe to use `fs.writev()` multiple times on the same file without
* waiting for the callback. For this scenario, use {@link createWriteStream}.
*
* On Linux, positional writes don't work when the file is opened in append mode.
* The kernel ignores the position argument and always appends the data to
* the end of the file.
* @since v12.9.0
*/
export function writev(
fd: number,
buffers: ReadonlyArray<ArrayBufferView>,
cb: (
err: ErrnoException | null,
bytesWritten: number,
buffers: ArrayBufferView[],
) => void,
): void;
export function writev(
fd: number,
buffers: ReadonlyArray<ArrayBufferView>,
position: number | null,
cb: (
err: ErrnoException | null,
bytesWritten: number,
buffers: ArrayBufferView[],
) => void,
): void;
export interface WriteVResult {
bytesWritten: number;
buffers: ArrayBufferView[];
}
export namespace writev {
function __promisify__(
fd: number,
buffers: ReadonlyArray<ArrayBufferView>,
position?: number,
): Promise<WriteVResult>;
}
/**
* For detailed information, see the documentation of the asynchronous version of
* this API: {@link writev}.
* @since v12.9.0
* @return The number of bytes written.
*/
export function writevSync(
fd: number,
buffers: ReadonlyArray<ArrayBufferView>,
position?: number,
): number;
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