# Disallow repeating dependent keys (`no-duplicate-dependent-keys`)

## Rule Details

This rule makes it easy to spot repeating dependent keys in computed properties.

Examples of **incorrect** code for this rule:

```js
computed('foo.bar', 'foo.baz', 'foo.qux', 'foo.bar', function() {
  //...
})
// or using brace expansions
computed('foo.{bar,baz,qux}', 'foo.bar', function() {
  //...
})
```

Examples of **correct** code for this rule:

```js
computed('foo.bar', 'foo.baz', 'foo.qux', function() {
  //...
})
// or using brace expansions
computed('foo.{bar,baz,qux}', 'bar.foo', function() {
  //...
})
```