freesewing/markdown/dev/howtos/code/store/en.md

title	for	about
Sharing data between parts	developers	Shows how you use the pattern store to share data between parts

Sometimes, you'll want to access data from one part into another part. For example, you may store the length of the armhole in your front and back parts, and then read that value when drafting the sleeve so you can verify the sleeve fits the armhole.

For this, you should use the Store, which is available via the shorthand call:

export default function(part) {
  let { store } = part.shorthand();
  store.set('hello', 'world');

  return part();
}

export default function(part) {
  let { store } = part.shorthand();
  store.get('hello'); // Returns 'world'

  return part();
}

In a case like this, the order in which parts are drafted becomes important, so you should reflect that in the pattern configuration.