memoized debounce

activate.js

// debounce function if arguments do not change
// https://github.com/lodash/lodash/issues/2403#issuecomment-290760787
function activate(func, wait=0, options={}) {
  var mem = _.memoize(function() {
    return _.debounce(func, wait, options)
  }, options.resolver);
  return function(){mem.apply(this, arguments).apply(this, arguments)}
}