* Uppercase the first letter of a string. * * @param {string} string * String to be uppercased * * @return {string} * The string

* Object.assign-style object shallow merge/extend. * * @param {Object} target * @param {Object} ...sources * @return {Object}

* Creates an element and applies properties. * * @param {string} [tagName='div'] * Name of tag to be created. * * @param {Object} [proper

* Deep-merge one or more options objects, recursively merging **only** plain * object properties. * * @param {Object[]} sources * One o

* Returns whether a value is an object of any kind - including DOM nodes, * arrays, regular expressions, etc. Not functions, though. * * This avoid

* Removes event listeners from an element * * @param {Element|Object} elem * Object to remove listeners from. * * @param {string|string[]}