Usage in Deno
import { write } from "node:fs";
write<TBuffer extends ArrayBufferView>(fd: number,buffer: TBuffer,offset: number
| undefined
| null,length: number
| undefined
| null,position: number
| undefined
| null,callback: (err: ErrnoException | null,written: number,buffer: TBuffer,) => void,): void
Write buffer to the file specified by fd.
offset determines the part of the buffer to be written, and length is
an integer specifying the number of bytes to write.
position refers to 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. See pwrite(2).
The callback will be given three arguments (err, bytesWritten, buffer) wherebytesWritten specifies how many bytes were written from buffer.
If this method is invoked as its util.promisify() ed version, it returns
a promise for an Object with bytesWritten and buffer properties.
It is unsafe to use fs.write() multiple times on the same file without waiting
for the callback. For this scenario, createWriteStream is
recommended.
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.
void
write<TBuffer extends ArrayBufferView>(fd: number,buffer: TBuffer,offset: number
| undefined
| null,length: number
| undefined
| null,callback: (err: ErrnoException | null,written: number,buffer: TBuffer,) => void,): void
Asynchronously writes buffer to the file referenced by the supplied file descriptor.
buffer: TBuffer
The part of the buffer to be written. If not supplied, defaults to 0.
The number of bytes to write. If not supplied, defaults to buffer.length - offset.
void
write<TBuffer extends ArrayBufferView>(fd: number,buffer: TBuffer,offset: number
| undefined
| null,callback: (err: ErrnoException | null,written: number,buffer: TBuffer,) => void,): void
Asynchronously writes buffer to the file referenced by the supplied file descriptor.
void
write<TBuffer extends ArrayBufferView>(fd: number,buffer: TBuffer,callback: (err: ErrnoException | null,written: number,buffer: TBuffer,) => void,): void
write(fd: number,string: string,position: number
| undefined
| null,encoding: BufferEncoding
| undefined
| null,callback: (err: ErrnoException | null,written: number,str: string,) => void,): void
Asynchronously writes string to the file referenced by the supplied file descriptor.
The offset from the beginning of the file where this data should be written. If not supplied, defaults to the current position.
void
write(fd: number,string: string,position: number
| undefined
| null,callback: (err: ErrnoException | null,written: number,str: string,) => void,): void
Asynchronously writes string to the file referenced by the supplied file descriptor.
The offset from the beginning of the file where this data should be written. If not supplied, defaults to the current position.
void