index.js
function makeHierarchyList( classes ) {
	if ( classes.length === 0 ) {
		return '';
	} else {
		var className = classes.shift();
		return '<ul><li>' + linkTo( className ) + ' ' + makeHierarchyList( classes ) + '</li></ul>'
	}
}
function makeHierarchyList( classes ) {
	if ( classes.length === 0 ) {
		return '';
	} else {
		var className = classes.shift();
		return '<ul><li>' + linkTo( className ) + ' ' + makeHierarchyList( classes ) + '</li></ul>'
	}
}
Recursive function that creates a nested list of a class' parents.

@param {string[]} classes Array of class' parent's names
@returns {string} HTML string of a `<ul>`