/**
 * Transforms a kebab-case string to camelCase. A kebab-case string
 * is a string with hyphen character as word separator.
 *
 * @param {String} str The hyphenized string
 * @return {String} The camelized string
 */
export function kebabToCamel(str) {
    return str.replace(/-([a-z])/g, g => g[1].toUpperCase());
}

/**
 * Transforms a camelCase to kebab-case.
 *
 * @param {String} str The camelized string
 * @return {String} The hyphenized string
 */
export function camelToKebab(str) {
    let kebabCased = str.substr(1)
        .replace(/[A-Z]/g, g => `-${g[0]}`);
    return `${str.charAt(0)}${kebabCased}`.toLowerCase();
}

/**
 * Transforms the first letter of a string to uppercase.
 *
 * @param {String} str The input string
 * @return {String} The transformed string
 */
export function firstUpper(str) {
    return str.charAt(0).toUpperCase() + str.substr(1);
}