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Notes for curious frontend developers

Practical React, JavaScript and performance notes from problems solved, talks prepared and things relearned.

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Closures and use cases in React
Server state vs client state
Avoiding waterfalls with Suspense and streaming
Generics
Throttle and debounce
Reference vs Value
Cleanup function
Regular variables and useState
When does a component rerender?
Paint vs Render
Two effects in React
All about reduce
Group by method
Spread and rest operator
Reintroduction to sort method
What is a lexical scope?
What is a pure function?
How to fetch data in React?
Double question mark operator
When to use useRef and useState?
String incrementer