Welldone Software

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Vitali Zaidman

An Overview of JavaScript Testing in 2020

This guide is intended to catch you up with the most important reasoning, terms, tools, and approaches to JavaScript testing.

Jan 27, 2022

An Overview of JavaScript Testing in 2020

Jan 27, 2022

Vitali Zaidman

Jest — How To Mock a Function Call Inside a Module

May 3, 2021

Jest — How To Mock a Function Call Inside a Module

May 3, 2021

Vitali Zaidman

useCallback Might Be What You Meant By useRef & useEffect

Sometimes we respond to React element mounts. The first instinct is to useRef & useEffect. But what you need is often useCallback.

Jan 14, 2021

useCallback Might Be What You Meant By useRef & useEffect

Jan 14, 2021

Vitali Zaidman

Two Ways to Run Tests on Different Versions of The Same Library F.E. React 17 + React 16

How can you run tests on version X and version Y of a library, with real-world examples of testing React 16 and React 17

Nov 24, 2020

Two Ways to Run Tests on Different Versions of The Same Library F.E. React 17 + React 16

Nov 24, 2020

Vitali Zaidman

React — When Should Pure Components Be Used?

React.memo / React.PureComponent usage guide

Oct 21, 2020

React profiler screenshot where Main re-renders often

Oct 21, 2020

Jenia Nemzer

Unit testing Styled Components

Unit testing React components isn’t always easy. In this short article i’ll show some tricks to make our lives a little easier, using…

Jun 8, 2020

Unit testing Styled Components

Jun 8, 2020

Vitali Zaidman

React- useCallback Invalidates Too Often in Practice

What is issue #14099 in React’s repo and how it affects you?

May 25, 2020

React- useCallback Invalidates Too Often in Practice

May 25, 2020

Vitali Zaidman

Forced to Work From Home? Maybe it’s a Blessing in Disguise?

When working remotely, you benefit much more from good working processes and proactive team members and you are punished much more…

Mar 18, 2020

Forced to Work From Home? Maybe it’s a Blessing in Disguise?

Mar 18, 2020

Vitali Zaidman

Why Did You Render v4 Released!

TypeScript support, Custom hooks tracking (like React-Redux’s useSelector), Tracking of all pure components.

Jan 27, 2020

Why Did You Render v4 Released!

Jan 27, 2020

Nir Avraham

How to Reduce Unnecessary Re-renders

How placing useState / useSelector in the right component can optimize performance?

Nov 11, 2019

How to Reduce Unnecessary Re-renders

Nov 11, 2019

Welldone Software

The leading full-stack software solutions company. Creating amazing frontends and rock-solid backends using top-notch technologies and practices. Visit us at https://welldone.software/

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Editors

Vitali Zaidman

https://twitter.com/vzaidman ⎝(•ω•)⎠ https://vzaidman.com

Dani Kenan

Owner and hands-on CTO of Welldone Software — the leading full-stack consultancy in Israel. Getting stuff done, well done.

Michael Rovinsky

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