Passing arguments within a script

Any idea how I’d replace all instances of breaknotes in this script with a argument?

I’m very close to writing a build script to write build scripts for each of my components. (not a good idea)

`scripts`:{
    "update:breaknotes": "cd ./generators/ && node component.js breaknotes && terminal-notifier -message 'breaknotes updated'",
}

sadly npm config set component "breaknotes doesn’t update the local package config even without the --global flag. $npm_package_config_component only pulls in the local

  "config": {
    "component": "breaknotes"
  },

Is there a way to write to the local config with a command because then we could write

npm config set component "breaknotes" && npm run update:component

[keithamus]

As I mentioned in the article you can override config vars using command line switches. So let’s say you had a package json something like:

"name": "myproject",
"config": {
    "component": "breaknotes"
},
"scripts" :{
    "update": "cd ./generators/ && node component.js $npm_package_config_component && terminal-notifier -message '$npm_package_config_component updated'",
}

You could run npm run update --myproject:component=foo and it would override the $npm_package_config_component var to be foo.

The reason your permanent npm config set command isn’t working, is because it needs the project namespace (it needs to be prefixed with the project name, plus a colon). So given my above example, I’d run the command npm config set myproject:component "foo" to set it permanently in my local ~/.npmrc

[keithamus]

Ah, unfortunately variables won’t work in Windows. You can use npm config still, but you have to use it inside of a Node.js script, so this will work:

{
  "name": "example",
  "version": "1.0.0",
  "description": "",
  "main": "index.js",
  "config":{
    "var": "hello world",
    "VAR": "HELLO WORLD"
  },
  "scripts": {
    "test": "echo \"Error: no test specified\" && exit 1",
    "example": "node -p 'process.env.npm_package_config_var'",
    "caps": "node -p 'process.env.npm_package_config_VAR'"
  },
  "author": "",
  "license": "ISC"
}

Alternatively if you’re ONLY using windows for this project, you can use the Windows variable syntax of %VAR%. I haven’t tested this but it should work:

{
  "name": "example",
  "version": "1.0.0",
  "description": "",
  "main": "index.js",
  "config":{
    "var": "hello world",
    "VAR": "HELLO WORLD"
  },
  "scripts": {
    "test": "echo \"Error: no test specified\" && exit 1",
    "example": "echo %npm_package_config_var%",
    "caps": "echo %npm_package_config_VAR%",
    "arg": "node -e 'console.log(process.argv)' %npm_package_config_var% %npm_package_config_VAR%"
  },
  "author": "",
  "license": "ISC"
}