substance/util/getKeyForPath.js

Substance is a JavaScript library for web-based content editing. It provides building blocks for realizing custom text editors and web-based publishing system. It is developed to power our online editing platform [Substance](http://substance.io).

export default function getKeyForPath (path) {
  if (path._key === undefined) {
    Object.defineProperty(path, '_key', {
      value: path.join('.'),
      writable: false,
      enumerable: false
    })
  }
  return path._key
}