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Vladimir Klepov profile picture

Vladimir Klepov

An intercontinental hobo making browsers do tricks for money. And I have a blog!

Work

Front-end team lead @ Ozon Fintech

I conducted 60 interviews in 2 months — here's what I learned

I conducted 60 interviews in 2 months — here's what I learned

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6 min read

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I built Hippotable for in-browser data analysis

I built Hippotable for in-browser data analysis

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2 min read
Meet banditypes — the smallest TypeScript validation library

Meet banditypes — the smallest TypeScript validation library

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2 min read
I ditched Google analytics and went self-hosted

I ditched Google analytics and went self-hosted

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11 min read
Making sense of TypeScript using set theory

Making sense of TypeScript using set theory

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11 min read
Seven habits of bad interviewers

Seven habits of bad interviewers

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10 min read
5 coding interview questions I hate

5 coding interview questions I hate

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8 min read
Using global memoization in React

Using global memoization in React

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8 min read
Good advice on JSX conditionals

Good advice on JSX conditionals

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6 min read
Make useRef lazy — 4 ways

Make useRef lazy — 4 ways

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7 min read
Open source starter pack for JS devs

Open source starter pack for JS devs

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8 min read
useEffect sometimes fires before paint

useEffect sometimes fires before paint

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5 min read
SemVer: The Tricky Parts

SemVer: The Tricky Parts

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7 min read
Why I always wrap Context.Provider and useContext

Why I always wrap Context.Provider and useContext

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4 min read
Can we useRef, but without the .current? Let's try!

Can we useRef, but without the .current? Let's try!

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11 min read
How to replace useState with useRef and be a winner

How to replace useState with useRef and be a winner

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8 min read
Thanks React, I'm fine with an imperative setInterval

Thanks React, I'm fine with an imperative setInterval

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7 min read
Are many useStates better than useState(object)?

Are many useStates better than useState(object)?

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8 min read
Using babel's transform-runtime? It may not work well without "version" option.

Using babel's transform-runtime? It may not work well without "version" option.

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2 min read
How to destroy your app performance using React contexts

How to destroy your app performance using React contexts

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8 min read
7 things you may not know about useState

7 things you may not know about useState

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4 min read
Build better libraries, use dev warnings

Build better libraries, use dev warnings

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4 min read
How we made our pre-commit check 7x faster

How we made our pre-commit check 7x faster

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3 min read
Cleaner ways to build dynamic JS arrays

Cleaner ways to build dynamic JS arrays

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4 min read
Go beyond eslint limits with these 3 tricks

Go beyond eslint limits with these 3 tricks

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4 min read
Become the master of your eslint with no-restricted-syntax

Become the master of your eslint with no-restricted-syntax

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3 min read
How to increase test coverage FAST

How to increase test coverage FAST

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4 min read
So you think you know everything about React refs

So you think you know everything about React refs

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6 min read
I built grafar to visualize maths on the web

I built grafar to visualize maths on the web

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2 min read
Did I just build a better useCallback?

Did I just build a better useCallback?

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4 min read
How useRef turned out to be useMemo's father

How useRef turned out to be useMemo's father

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2 min read
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