`process.stdout`

A writable stream connected to standard output.

Since Node 0.x Spec ↗

Syntax

process.stdout.write(chunk)

Parameters

Name	Type	Required	Description
`chunk`	`string \| Buffer`	Yes	The data to write to stdout.

Returns

boolean — false if the buffer is full and you should wait for drain.

Examples

process.stdout.write('progress: ');
process.stdout.write('50%\n');

Output

progress: 50%

if (process.stdout.isTTY) {
  console.log('interactive terminal,', process.stdout.columns, 'cols');
}

Output

interactive terminal, 120 cols

Notes

Unlike `console.log`, `write` adds no newline and does not format objects. `stdout` is synchronous for files/TTYs but async for pipes. Check `isTTY` before emitting ANSI color codes so piped output stays clean.