Nodejs, checking external executable is available?

Question

How can I check that an executable is available, on the computer my on which my NodeJS application is installed?

I don't want to wait until I call child_process.exec() to find the executable is missing, rather I would prefer to do a preflight check at the application launch, so it can fail early and clearly. I was recently bitten by this, only finding out two days after server launch, so I would like to avoid this going forward.

At the moment I am looking at simply doing which <command>, assuming a Unix based environment, and then parsing the output. Is there a better way, possibly more portable?

Jason Livesay · Accepted Answer · 2016-09-28 22:33:33Z

1

Use the which module. Always search npmjs.com and npms.io.

answered Sep 28, 2016 at 22:33

Jason Livesay

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