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