# Constant Case [![NPM version][npm-image]][npm-url] [![NPM downloads][downloads-image]][downloads-url] [![Build status][travis-image]][travis-url] [![Test coverage][coveralls-image]][coveralls-url] Constant case a string. Supports Unicode (non-ASCII characters) and non-string entities, such as objects with a `toString` property, numbers and booleans. Empty values (`null` and `undefined`) will result in an empty string. ## Installation ``` npm install constant-case --save ``` ## Usage ```javascript var constantCase = require('constant-case') constantCase('string') //=> "STRING" constantCase('PascalCase') //=> "PASCAL_CASE" constantCase('myString', 'tr') //=> "MY_STRÄ°NG" ``` ## Typings Includes a [TypeScript definition](constant-case.d.ts). ## License MIT [npm-image]: https://img.shields.io/npm/v/constant-case.svg?style=flat [npm-url]: https://npmjs.org/package/constant-case [downloads-image]: https://img.shields.io/npm/dm/constant-case.svg?style=flat [downloads-url]: https://npmjs.org/package/constant-case [travis-image]: https://img.shields.io/travis/blakeembrey/constant-case.svg?style=flat [travis-url]: https://travis-ci.org/blakeembrey/constant-case [coveralls-image]: https://img.shields.io/coveralls/blakeembrey/constant-case.svg?style=flat [coveralls-url]: https://coveralls.io/r/blakeembrey/constant-case?branch=master