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Marcin Wosinek profile picture

Marcin Wosinek

I'm a JavaScript developer with more than 10 years of experience. Now, I'm helping people get into IT & JS

Location Valencia, Spain Joined Joined on  Personal website https://how-to.dev/ github website twitter website
How to write a good bug report

How to write a good bug report

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4 min read

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Which technical skills are useful for test automation

Which technical skills are useful for test automation

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4 min read
What is manual testing?

What is manual testing?

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5 min read
All the moving parts in an end-to-end setup

All the moving parts in an end-to-end setup

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4 min read
What are the benefits of unit testing?

What are the benefits of unit testing?

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3 min read
How to set up a perfectly isolated end-to-end environment

How to set up a perfectly isolated end-to-end environment

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4 min read
How to manage the ever-growing execution time of E2E tests

How to manage the ever-growing execution time of E2E tests

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5 min read
What causes end-to-end flakiness and how to address it

What causes end-to-end flakiness and how to address it

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9 min read
How to prioritize test cases in end-to-end testing

How to prioritize test cases in end-to-end testing

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4 min read
Divider App: Improving edge cases

Divider App: Improving edge cases

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5 min read
Divider App: How many edge cases can have one operation

Divider App: How many edge cases can have one operation

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5 min read
How to squeeze information from your repository with the command line

How to squeeze information from your repository with the command line

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11 min read
Does My Web Application Need End-to-End and Unit Tests?

Does My Web Application Need End-to-End and Unit Tests?

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8 min read
Intro to the Terminal: Basic Commands That Will Help You Get Started

Intro to the Terminal: Basic Commands That Will Help You Get Started

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8 min read
Pros and Cons of Keeping Your Code in Monorepo

Pros and Cons of Keeping Your Code in Monorepo

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7 min read
How to keep your units testable in JavaScript

How to keep your units testable in JavaScript

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8 min read
What a security operations center analyst does and how to become one

What a security operations center analyst does and how to become one

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4 min read
The Hitchhiker’s Guide to the Command Line

The Hitchhiker’s Guide to the Command Line

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Getting into tech with no IT background: Tips & stories

Getting into tech with no IT background: Tips & stories

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8 min read
Why do developers use shell?

Why do developers use shell?

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5 min read
Is jQuery still relevant?

Is jQuery still relevant?

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4 min read
Rebases in Git and why you shouldn’t be afraid of them

Rebases in Git and why you shouldn’t be afraid of them

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7 min read
When Should I Register on GitHub As a Beginner Programmer?

When Should I Register on GitHub As a Beginner Programmer?

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How to keep your sanity while working with Git

How to keep your sanity while working with Git

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6 min read
Why Git is so complicated

Why Git is so complicated

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The "detached HEAD" state in Git: What it is and how to fix it

The "detached HEAD" state in Git: What it is and how to fix it

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Searching for an IT job: Comparing the workplace characteristics of IT companies

Searching for an IT job: Comparing the workplace characteristics of IT companies

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7 min read
Oh-My-Bill: Project Introduction

Oh-My-Bill: Project Introduction

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Minor imperfections that shout ‘beginner code’

Minor imperfections that shout ‘beginner code’

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What Tech Newbies Need According to Industry Insiders

What Tech Newbies Need According to Industry Insiders

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HTML + CSS project: website slicing

HTML + CSS project: website slicing

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How to Become a Faster Programmer

How to Become a Faster Programmer

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The README file: How to Help Others Understand Your Project

The README file: How to Help Others Understand Your Project

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Beginner Programmer’s Guide to Using Git in a Team

Beginner Programmer’s Guide to Using Git in a Team

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How To Set Up .gitignore for Your JavaScript Project

How To Set Up .gitignore for Your JavaScript Project

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How to Implement a Basic JavaScript Application

How to Implement a Basic JavaScript Application

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How to Collect Inputs for Your Project

How to Collect Inputs for Your Project

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How to Start Unit Testing with Jasmine

How to Start Unit Testing with Jasmine

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The Simplest Case for Unit Tests: Pure Functions

The Simplest Case for Unit Tests: Pure Functions

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Remote IT Mentoring: My Schema for Effective Collaboration

Remote IT Mentoring: My Schema for Effective Collaboration

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What should you learn next as a developer

What should you learn next as a developer

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How to use native ES modules

How to use native ES modules

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What’s the point of unit tests?

What’s the point of unit tests?

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How to professionalize your little work project

How to professionalize your little work project

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2 min read
How to learn data modeling

How to learn data modeling

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How to get the most value out of your git repository

How to get the most value out of your git repository

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3 min read
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