/**
 * Returns camel-cased equivalent of (lower-case) hyphenated string.
 *
 * To enable round-tripping, hyphens not followed by a-z are left intact
 * (can be checked for and/or removed manually if required).
 * 
 * Only transforms ASCII capitals (lack of JavaScript Unicode regexp).
 */
function hyphenToCamel(str) {
    // for Unicode transforms, replace [a-z] with \p{Ll} if available
    return str
        .toLowerCase()
        .replace(/^[a-z]/g, function(letter) {
            return letter.toUpperCase();
        })
        .replace(/\-[a-z]/g, function(letter) {
            return letter.slice(1).toUpperCase();
        });
}


/**
 * Returns hyphenated equivalent of camel-cased string
 * 
 * Only transforms ASCII capitals (lack of JavaScript Unicode regexp).
 */
function camelToHyphen(str) {
    // for Unicode transforms, replace [A-Z] with \p{Lu} if available
    return str
        .replace(/^[A-Z]/g, function(letter) {
            return letter.toLowerCase();
        })
        .replace(/[A-Z]/g, function(letter) { 
            return '-'+letter.toLowerCase();
        });
}