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# decamelize-keys [](https://travis-ci.org/dsblv/decamelize-keys)
> Convert object keys from camelCase to lowercase with a custom separator using [`decamelize`](https://github.com/sindresorhus/decamelize)
*This project was forked from [`camelcase-keys`](https://github.com/sindresorhus/camelcase-keys) and converted to do the opposite*
## Install
```sh
$ npm install --save decamelize-keys
```
## Usage
```js
const decamelizeKeys = require('decamelize-keys');
decamelizeKeys({fooBar: true}, '-');
//=> {'foo-bar': true}
```
## API
### decamelizeKeys(input, [separator], [options])
### input
Type: `object`
*Required*
Object to decamelize.
### separator
Type: `string`
Default: `_`
A string to insert between words.
### options
Type: `object`
#### separator
Type: `string`
Default: `_`
Alternative way to specify [separator](#separator).
#### exclude
Type: `array`
Default: `[]`
Exclude keys from being decamelized.
## Related
See [`camelcase-keys`](https://github.com/sindresorhus/camelcase-keys) for the inverse.
## License
MIT © [Sindre Sorhus](http://sindresorhus.com), [Dmirty Sobolev](https://github.com/dsblv)
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