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trackedSpread
import Controller from '@ember/controller';
import { MyClass } from '../my-class'
import { action } from '@ember/object'
export default class ApplicationController extends Controller {
appName = 'Ember Twiddle';
myClass = new MyClass()
clone = new MyClass(trackedSpread(this.myClass, { a: 'foo' }))
get foo() {
console.log({ ...this.myClass })
console.log(trackedSpread(this.myClass))
return {
...this.myClass
}
}
@action updateClone() {
this.clone.a = 'bar'
}
}
export function trackedSpread(entry, options = {}) {
return {
...entry,
...Object.entries(Object.getOwnPropertyDescriptors(entry.__proto__))
.filter(([key, desc]) => desc.enumerable)
.reduce((acc, [key]) => {
acc[key] = entry[key]
return acc
}, {}),
...options
}
}
import { tracked } from '@glimmer/tracking'
export class MyClass {
constructor(args) {
Object.assign(this, args)
}
@tracked a = 'a'
@tracked b = 'b'
c = 'c'
get x() {
return 'x'
}
y() {
this.c = 'd'
}
}
<h1>Welcome to {{this.appName}}</h1>
<br>
<br>
<div>
original a = {{this.myClass.a}}
</div>
<div>
clone a = {{this.clone.a}}
</div>
<button {{on 'click' this.updateClone}}>Update clone</button>
<br>
<br>
{
"version": "0.17.1",
"EmberENV": {
"FEATURES": {},
"_TEMPLATE_ONLY_GLIMMER_COMPONENTS": false,
"_APPLICATION_TEMPLATE_WRAPPER": true,
"_JQUERY_INTEGRATION": true
},
"options": {
"use_pods": false,
"enable-testing": false
},
"dependencies": {
"jquery": "https://cdnjs.cloudflare.com/ajax/libs/jquery/3.5.1/jquery.js",
"ember": "3.18.1",
"ember-template-compiler": "3.18.1",
"ember-testing": "3.18.1"
},
"addons": {
"@glimmer/component": "1.0.0"
}
}
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