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#18969 bug?
import Component from "@glimmer/component";
import { tracked } from "@glimmer/tracking";
import { action } from "@ember/object";
let id = 0;
export default class extends Component {
@tracked items = [];
@action
add() {
this.items.push({ id: id++, value: 'hello'})
this.items = this.items;
}
@action
remove() {
this.items.pop();
this.items = this.items;
}
@action
clearItems() {
this.items = [];
}
}
import { helper } from "@ember/component/helper";
export default helper(function mapBy([array, propertyName]) {
console.log("C", array);
return array.mapBy(propertyName);
});
<div style="padding: 4px; margin: 4px; background-color: lightyellow;">
Trying to reproduce https://github.com/emberjs/ember.js/issues/18969
</div>
<Outer />
<h1>List</h1>
There are {{@items.length}} items:
{{log 'A' @items}}
{{#if @items}}
{{log 'B' @items}}
{{#let (map-by @items 'id') as |itemIds|}}
itemIds: {{itemIds}}
{{/let}}
{{/if}}
<button {{on "click" this.add}}>Add</button>
<button {{on "click" this.remove}}>Remove</button>
<button {{on "click" this.clearItems}}>Clear</button>
<Inner @items={{this.items}} />
{
"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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