client/src/app/app.service.ts

   1 /* tslint:disable */
   2
   3 import { Injectable } from '@angular/core'
   4
   5 export type InternalStateType = {
   6   [key: string]: any
   7 }
   8
   9 @Injectable()
  10 export class AppState {
  11
  12   public _state: InternalStateType = { }
  13
  14   /**
  15    * Already return a clone of the current state.
  16    */
  17   public get state() {
  18     return this._state = this._clone(this._state)
  19   }
  20   /**
  21    * Never allow mutation
  22    */
  23   public set state(value) {
  24     throw new Error('do not mutate the `.state` directly')
  25   }
  26
  27   public get(prop?: any) {
  28     /**
  29      * Use our state getter for the clone.
  30      */
  31     const state = this.state
  32     return state.hasOwnProperty(prop) ? state[prop] : state
  33   }
  34
  35   public set(prop: string, value: any) {
  36     /**
  37      * Internally mutate our state.
  38      */
  39     return this._state[prop] = value
  40   }
  41
  42   private _clone(object: InternalStateType) {
  43     /**
  44      * Simple object clone.
  45      */
  46     return JSON.parse(JSON.stringify( object ))
  47   }
  48 }