debounce.js

function debounce(fn, delay) {
  let timer;
  return function (...args) {
    clearTimeout(timer);
    timer = setTimeout(() => fn.apply(this, args), delay);
  };
}

debounce.test.js

const obj = {
  name: 'test',
  method: function() {
    console.log(this.name);
  },
  method2: debounce(function() {
    console.log(this.name);
  }, 100)
};

obj.method = debounce(obj.method, 100);
obj.method();
obj.method2();