array.ts — vue Source File

Architecture documentation for array.ts, a typescript file in the vue codebase. 2 imports, 1 dependents.

File typescript VueCore 2 imports 1 dependents

Entity Profile

VueCore→ array.ts — vue Source File

Dependency Diagram

graph LR
  62074bbb_3339_ba82_2975_f5cd0be2308e["array.ts"]
  f0fec710_9627_fe4c_002d_7f657fb9e5d0["index.ts"]
  62074bbb_3339_ba82_2975_f5cd0be2308e --> f0fec710_9627_fe4c_002d_7f657fb9e5d0
  76672dd6_4e87_4468_a48b_f4da793fd211["index.ts"]
  62074bbb_3339_ba82_2975_f5cd0be2308e --> 76672dd6_4e87_4468_a48b_f4da793fd211
  af395f8e_1ac5_a239_71b7_fd29a1c03d2c["index.ts"]
  af395f8e_1ac5_a239_71b7_fd29a1c03d2c --> 62074bbb_3339_ba82_2975_f5cd0be2308e
  style 62074bbb_3339_ba82_2975_f5cd0be2308e fill:#6366f1,stroke:#818cf8,color:#fff

Relationship Graph

Source Code

/*
 * not type checking this file because flow doesn't play well with
 * dynamically accessing methods on Array prototype
 */

import { TriggerOpTypes } from '../../v3'
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
    if (__DEV__) {
      ob.dep.notify({
        type: TriggerOpTypes.ARRAY_MUTATION,
        target: this,
        key: method
      })
    } else {
      ob.dep.notify()
    }
    return result
  })
})