Quick summary ↬
Every now and again we have to deal with legacy code, wading through dark and eerie sides of the code base, often with a vague, ambiguous and unsettling documentation — if any is provided at all. In such cases, refactoring the component seems inevitable.
There are also many other useful resources worth taking a look at:
Learn Vanilla JS features books, courses, evergreen resources, communities, podcasts all around vanilla JS. A fantastic repository that’s worth keeping close.
Micro-Libraries Under 5K
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Single Line Of Code