taburetkin/marionette.yat

import _ from 'underscore';
// camelCase('asd:qwe:zxc') -> asdQweZxc
// camelCase('asd:qwe:zxc', true) -> AsdQweZxc
export default function camelCase(...args) {

    let text;
    let first;

    if (!args || !args.length) return;
    else if (args.length == 1) {
        text = args[0];
    } else {
        if (_.isBoolean(_.last(args))) {
            first = args.pop();
        }
        text = _.filter(args, chunk => chunk != null).join(':');
    }

    if (!text) return text;

    if (!_.isString(text)) return text.toString();

    text = text.replace(/:{2,}/gmi,':');

    let splitter = first === true ? /(^|:)(\w)/gi : /(:)(\w)/gi;

    text = text.replace(splitter, (match, prefix, rtext) => rtext.toUpperCase());

    if (!first) {
        text = text.replace(/(^)(\w)/gi, (match, prefix, rtext) => rtext.toLowerCase());
    }

    return text;

}