Scoped Property Store

Stores and retrieves properties associated with CSS selectors.

Currently, this library only supports the combinations of the following elements. More could be added pretty easily.

• Element names: div
• Class names: .foo
• Simple attributes: [foo=bar]
• Descendant selectors: .foo .bar
• Child selectors: .foo > .bar

Usage:

ScopedPropertyScore = require 'scoped-property-store'
store = new ScopedPropertyScore

# First associate some properties with selectors
disposable = store.addProperties 'some-description',
  '.foo.bar .baz':
    x:
      y: 1
      z: 2

  '.foo':
    x:
      y: 3

# Then query properties based on a string description of a path in the DOM.
store.get('div.foo.bar p.baz', 'x.y') # ==> 1
store.get('div.foo.bar p.baz', 'x.z') # ==> 2

# Falls back to selectors matching an *ancestor* if necessary
store.get('div.foo p.baz', 'x.y') # ==> 3

# You can also remove properties via the returned Disposable
disposable.dispose()