Option flag doesn't works when running commander from script using NPM

[shahafa]

Hi,

I'm following the pizza example in the documentation

index.js

const { program } = require('commander');

program
  .option('-d, --debug', 'output extra debugging')
  .option('-s, --small', 'small pizza size')
  .option('-p, --pizza-type <type>', 'flavour of pizza');

program.parse(process.argv);

if (program.debug) console.log(program.opts());
console.log('pizza details:');
if (program.small) console.log('- small pizza size');
if (program.pizzaType) console.log(`- ${program.pizzaType}`);

package.json

{
  "name": "test",
  "scripts": {
    "start": "node index.js",
  },
  "dependencies": {
    "commander": "^5.1.0"
  }
}

when I'm running yarn start -p cheese everything works as expected and the console prints

pizza details:
- cheese

however when I'm running npm run start -p cheese the pizza type flag is missing, the console prints

pizza details:

[shadowspawn]

Short version: try npm run start -- -p cheese

Long version

npm is still looking for options and gobbles the -p so it does not get passed along to node and your program. Like Commander, npm supports the convention to stop looking for options after seeing a -- in the arguments.

https://docs.npmjs.com/cli/run-script

A good debugging check when you have commands chained together like this is to dump out the arguments that reached your program:

console.log(process.argv);

[shahafa]

Thanks, @shadowspawn!