"use strict";

/* prettier-ignore */

/**
 * @desc camelCase
 * @since 0.2.0
 * @symb 🐫
 *
 * @param  {string} str string to turn into camelCase
 * @return {string} camelCased string
 *
 * @tutorial https://github.com/substack/camelize/blob/master/test/camel.js
 * @tutorial https://github.com/andrewplummer/Sugar/blob/9c018a257a38714b81f7df033b74d236dbf1e861/lib/string.js
 * @tutorial http://stackoverflow.com/questions/2970525/converting-any-string-into-camel-case
 * @tutorial https://github.com/sindresorhus/camelcase
 * @see https://stackoverflow.com/questions/1533131/what-useful-bitwise-operator-code-tricks-should-a-developer-know-about
 * @TODO s.charAt(0).toLowerCase() + string.slice(1)
 *
 * @types deps
 * @tests deps/camelCase
 *
 * @example
 *
 *  camelCase('snake_case')
 *  //=> 'snakeCase'
 *
 */
module.exports = str => str // spaces with underscore
.replace(/\s+/g, '_') // < underscores & dashes until whitespace or end
// > .toUpperCase x & '_'
.replace(/[_.-](\w|$)/g, (m, x) => x.toUpperCase());