Nodejs: Need to assign the command line parameters

Question

Example of request:

node index.js --DIR="/Downloads" --PATTERN=\.js

I found out that process.argv store all command line params. But I'm can't assign some elements of process.argv to DIR and PATTERN constant.
And the order params can be different.

There's really not much more to say than "`process.argv` stores all command line parameters". — Pointy, Nov 30 '17 at 23:06
Possible duplicate of [How do I pass command line arguments?](https://stackoverflow.com/questions/4351521/how-do-i-pass-command-line-arguments) — AuxTaco, Nov 30 '17 at 23:56

score 2 · Accepted Answer · answered Nov 30 '17 at 23:53

process.argv stores command line parameters, yes. But they're just plain strings. Node doesn't know what you want to do with them; you'll need to parse them yourself. You'll loop through process.argv.slice(2), figure out which constant is being assigned, handle any quoting or escaping weirdness, and do the assignment manually.

Or, if you don't feel like reinventing the wheel, use something like Yargs:

const argv = require('yargs').argv;

console.log(argv.DIR);      // /Downloads
console.log(argv.PATTERN);  // \.js

Nodejs: Need to assign the command line parameters

1 Answers1