# ember/template-no-unbound

💼 This rule is enabled in the 📋 `template-lint-migration` [config](https://github.com/ember-cli/eslint-plugin-ember#-configurations).

<!-- end auto-generated rule header -->

`{{unbound}}` is a legacy hold over from the days in which Ember's template engine was less performant. Its use today
is vestigial, and it no longer offers performance benefits.

It is also a poor practice to use it for rendering only the initial value of a property that may later change.

## Examples

This rule **forbids** the following:

```gjs
<template>
  {{unbound aVar}}
</template>
```

```gjs
<template>
  {{some-component foo=(unbound aVar)}}
</template>
```

## References

- [deprecations/unbound block syntax](https://deprecations.emberjs.com/v1.x/#toc_block-and-multi-argument-unbound-helper)
- [Ember api/unbound helper](https://api.emberjs.com/ember/release/classes/Ember.Templates.helpers/methods/each?anchor=unbound)