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- /*
- * not type checking this file because flow doesn't play well with
- * dynamically accessing methods on Array prototype
- */
- import { def } from '../util/index'
- const arrayProto = Array.prototype
- export const arrayMethods = Object.create(arrayProto)
- const methodsToPatch = [
- 'push',
- 'pop',
- 'shift',
- 'unshift',
- 'splice',
- 'sort',
- 'reverse'
- ]
- /**
- * Intercept mutating methods and emit events
- */
- methodsToPatch.forEach(function (method) {
- // cache original method
- const original = arrayProto[method]
- def(arrayMethods, method, function mutator (...args) {
- const result = original.apply(this, args)
- const ob = this.__ob__
- let inserted
- switch (method) {
- case 'push':
- case 'unshift':
- inserted = args
- break
- case 'splice':
- inserted = args.slice(2)
- break
- }
- if (inserted) ob.observeArray(inserted)
- // notify change
- ob.dep.notify()
- return result
- })
- })
|
