args-from

Turn package.json fields into a string of command arguments:

node-sass $(args-from sass)

Then,

{
  "name": "my-app",
  "author": "Jamen Marz",
  // ...
  "sass": {
    "_input": "src/app.scss",
    "output": "dist/"
  }
}

Install

npm i -D args-from

For example:

node-sass $(args-from sass)
node-sass foo.scss $(args-from scss) trailing

Any keys with _ become command input. For example:

"scss": {
  "_input": "src/app.scss",
  "output": "dist/"
}

Would procude:

node-sass src/app.scss --output=dist