Tracked built-ins

In this video we'll explore the tracked-built-ins package.


The tracked-built-ins package allows us use native JavaScript objects while tracking all the ways that they can change.

This means we can treat our arrays as mutable objects and tracked-built-ins will automatically propagate our changes to templates and computed properties.

import { tracked } from "tracked-built-ins";

class MyComponent extends Component {
  items = tracked([])

  @action addListItem() {


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