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@glimmer/reference

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@glimmer/reference

Objects used to track values and their dirtiness in Glimmer

  • 0.93.0
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  • npm
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Weekly downloads
183K
increased by19.43%
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15
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What is @glimmer/reference?

@glimmer/reference is a package that provides a set of utilities for managing and observing references in the Glimmer VM. It is primarily used in the context of Ember.js and Glimmer.js to handle reactive data and bindings efficiently.

What are @glimmer/reference's main functionalities?

Creating References

This feature allows you to create constant references that hold a static value. The `createConstRef` function is used to create a reference with a given value and label.

const { createConstRef } = require('@glimmer/reference');
const ref = createConstRef('Hello, world!', 'greeting');
console.log(ref.value()); // Output: 'Hello, world!'

Updating References

This feature allows you to create updatable references that can change their value over time. The `createUpdatableRef` function is used to create a reference that can be updated with a new value.

const { createUpdatableRef } = require('@glimmer/reference');
const ref = createUpdatableRef('Initial value');
console.log(ref.value()); // Output: 'Initial value'
ref.update('Updated value');
console.log(ref.value()); // Output: 'Updated value'

Tracking References

This feature allows you to track changes to references and react to those changes. The `track` function is used to execute a callback whenever the value of a reference changes.

const { createConstRef, createUpdatableRef, track } = require('@glimmer/reference');
const constRef = createConstRef('Static value');
const updatableRef = createUpdatableRef('Dynamic value');
track(() => {
  console.log(constRef.value()); // Output: 'Static value'
  console.log(updatableRef.value()); // Output: 'Dynamic value'
});
updatableRef.update('New dynamic value');
track(() => {
  console.log(updatableRef.value()); // Output: 'New dynamic value'
});

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Package last updated on 22 Nov 2024

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