An post based on my public talk on the Podlodka Frontend Crew conference.

TDD: What, How, and Why

Collecting the most important tweets from my week in the collective developers account on Twitter.

My Week at @jsunderhood

I've wanted to rewrite Tzlvt for a long time. In this post, I show the process and the results of the app redesign.

Tzlvt. Why Rewrite in TypeScript

It's true when otherwise is too complicated.

When Consistency is More Important than Correctness

The book “97 Things Every Programmer Should Know” advises to write code in terms of domain concepts. In this post, I show the advantages of this approach are using a simple example.

Missing Abstraction

Michael Feathers in “Working Effectively with Legacy Code” advises to separate methods and functions into two categories: commands and queries. This is a very simple idea, but it helps to make the code more readable and predictable, and the ideas of methods and functions cleaner and more understandable.

Command-Query Separation

Copypaste in code is not a pure evil, but a tool.

Copypaste in Code

In the third part we talk about changing obscure code, giant classes and methods.

Working Effectively with Legacy Code. Part 3

In the second part, we talk about changing code when we run out of time, adding features, TDD and dependencies.

Working Effectively with Legacy Code. Part 2

Notes from the book and summary. The first part includes an introduction, reasons for code changes, stitches, and automated refactoring tools.

Working Effectively with Legacy Code by Michael C. Feathers

Frontenders like to complain that backenders are keen on breaking backward compatibility. “They describe data structures and APIs, we use this API to bind the interface, but a month later the structure changes and nothing works,” they say. Today I will show how to make your life a little easier in these situations.

Cure For Broken Backend Backward Compatibility

I finally got around to updating Scroller. Here's what changed.

Scroller Upgrade

Interactive online book about OOP principles with examples and self-tests.

Solidbook

TDD tutorial and guide with an example of building the Tic-Tac-Toe game.

TTT-TDD

A 5-hour live workshop about TDD and testing React applications. We'll cover everything from extracting and testing business logic to testing asynchronous functions and adapters for third-party libraries.

All posts and projects by the “Refactoring” tag

Notes Tagged by “Refactoring”

2021

2019

2018

2017

Public Talks

Testing React Applications in Practice

Projects

Solidbook

TTT-TDD