Скачать или смотреть Polyfills for Classnames in React | Meta (Facebook) JavaScript interview question

This interview question was asked in META's E5 frontend interview for the London location.

It is a JavaScript interview question that tests your knowledge of writing polyfills.

The problem statement reads as:
Write a polyfill for Classnames, which is the most popular package to dynamically add classes to the JSX elements in ReactJS.

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