"Invalid" React example for debounce works properly

[nikita-rudenko]

I was reading the Debounce Vs Throttle: Definitive Visual Guide article and found out that both examples of "invalid" and "valid" debounce usages in React are actually valid.

Here is a demo: https://codesandbox.io/s/peaceful-water-0iudx?file=/src/App.js

I suppose the intended way for demonstrating an invalid debounce usage is with an inline arrow function:

<button onClick={() => debounce(this.handleButtonClick, 2000)}>