Is there any way I can detect if the output from my Node.js script is being piped to something other then the terminal?
I would like some way of detecting if this is happening:
node myscript.js | less
Or if this is happening:
node myscript.js
The easiest way would be process.stdout.isTTY (0.8 +):
$ node -p -e "Boolean(process.stdout.isTTY)"
true
$ node -p -e "Boolean(process.stdout.isTTY)" | cat
false
(example from the official documentation)
Alternatively you can use the tty module for finer grained control:
if (require('tty').isatty(1)) {
// terminal
}
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