es6-tween/src/NodeCache.js

ES6 implementation of amazing tween.js

import { remove } from './core'

export const Store = {}
export default function (node, object, tween) {
  if (!node || !node.nodeType) {
    return object
  }
  const ID = node.queueID || 'q_' + Date.now()
  if (!node.queueID) {
    node.queueID = ID
  }
  const storeID = Store[ID]
  if (storeID) {
    if (storeID.object === object && node === storeID.tween.node && tween._startTime === storeID.tween._startTime) {
      remove(storeID.tween)
    } else if (typeof object === 'object' && !!object && !!storeID.object) {
      for (let prop in object) {
        if (prop in storeID.object) {
          if (tween._startTime === storeID.tween._startTime) {
            delete storeID.object[prop]
          } else {
            storeID.propNormaliseRequired = true
          }
        }
      }
      Object.assign(storeID.object, object)
    }
    return storeID.object
  }

  if (typeof object === 'object' && !!object) {
    Store[ID] = {
      tween,
      object,
      propNormaliseRequired: false
    }
    return Store[ID].object
  }

  return object
}