Category · 26 articles
Clean Code
DI, SOLID, and the Fundamentals That Actually Matter
I stared at the screen. Lesson 58: Dependency Injection. Five minutes. Checkbox checked. Done.
26 Jan 2026
Coding Principles for Better Code Quality
After 15 years of writing code, I keep coming back to the same ten principles. Not because they're trendy. Because every production incident I've lived th...
20 Jul 2024
Right Balance: Best Practices for Code Comments in TypeScript
I've seen both extremes. A codebase with zero comments where nobody could understand the business rules buried in the logic. And a codebase where every li...
19 Apr 2024
Best Practices for Writing Isolated Tests in TypeScript
Tests were passing on my machine. Failing in CI. Passing again when I ran them individually. Failing when I ran the full suite. The problem? One test was ...
19 Apr 2024
Meaningful Test Concepts: Best Practices for Writing Tests in TypeScript
A test failed. Its name: test1. Its body: 47 lines with 12 assertions covering three different features. I couldn't tell which behavior was broken without...
19 Apr 2024
Open-Closed Principle (OCP) Best Practices in TypeScript: Guidelines and Examples
Every time we added a new payment method, we modified the PaymentProcessor class. Add Stripe? Touch PaymentProcessor. Add PayPal? Touch PaymentProcessor. ...
19 Apr 2024
Secure Programming and Resilience (SPR) Best Practices in TypeScript
A user submitted a form with a <script> tag in the name field. The name rendered on the admin dashboard. The script executed. We had an XSS vulnerability ...
19 Apr 2024
Prefer Composition Over Inheritance in TypeScript: Best Practices and Examples
I once inherited a codebase with a class hierarchy six levels deep. BaseEntity → TimestampedEntity → SoftDeletableEntity → AuditableEntity → TenantAwareEn...
19 Apr 2024
Method Chaining in TypeScript: Best Practices and Examples
I was building a query builder. Without method chaining, every operation needed a temporary variable. Five lines of boilerplate to express a single query....
19 Apr 2024
Encapsulating Variables: Best Practices with TypeScript
A junior developer set the account balance to -500. Nothing stopped them. The field was public. No validation. The system happily processed a negative bal...
19 Apr 2024
Avoiding Negative Conditions: Best Practices with TypeScript
I once spent 20 minutes debugging a conditional that read if (!isNotDisabled). Three negations deep. My brain short-circuited.
19 Apr 2024
Avoiding Side Effects in Functions: Best Practices with TypeScript
I once called a function named getUser(). It returned a user. It also sent an email, updated a counter, and wrote to a log file. None of that was obvious ...
19 Apr 2024
Avoiding Overwriting Function Inputs: Best Practices in TypeScript
A colleague passed an array to a utility function. The function returned the correct total. But the original array was destroyed — every element had been ...
19 Apr 2024
Decoupling Functions and Methods: Best Practices in TypeScript
I was staring at a 200-line function called processOrder. It calculated subtotals, applied discounts, computed tax, validated inventory, updated stock, se...
19 Apr 2024
Reducing Input Variables in TypeScript Functions
I looked at a function signature: createUser(name, email, age, role, department, managerId, startDate, isActive). Eight parameters. I had to read the impl...
19 Apr 2024
Naming Conventions in TypeScript: Best Practices for Classes, Functions, Types, Interfaces, Variables and Parameters
I've reviewed code where a variable named data was used 14 times in one file. Each one meant something different. The person who wrote it understood it pe...
19 Apr 2024
YAGNI, You Aren't Gonna Need It, Software Development, TypeScript, Clean Code
I built a plugin system for an internal tool. Configurable pipelines. Dynamic loading. Extension points. The tool had three users and never needed a singl...
19 Apr 2024
KISS Principle: Keep It Simple, Stupid
I once wrote a configuration system with plugin loading, hot reloading, schema validation, environment-specific overrides, and remote config fetching. The...
16 Apr 2024
Embracing the DRY Principle: Best Practices for Don't Repeat Yourself in Programming
I found the same validation logic in four different controllers. Someone had fixed a bug in one of them. The other three still had the original defect. Us...
16 Apr 2024
Mid-Sized Components and Functions: Best Practices for Modular and Maintainable Code
I've seen two extremes. Functions that are 500 lines long, doing everything from validation to database writes to email sending. And functions that are 3 ...
16 Apr 2024
"Change is Local": Strategies for Flexible and Adaptable Programming
I changed a date format in a utility function. It broke checkout, invoice generation, and two reporting dashboards. A one-line change. Four teams involved...
16 Apr 2024
High Cohesion in Software Development: Best Practices and Implementation Strategies
I had a class called UserManager. It managed users. It also sent emails, generated reports, handled file uploads, and validated payment details. It was 2,...
16 Apr 2024
Decoupling Components: Best Practices for Loose Coupling
I needed to swap a payment provider. One class change. It took two weeks. The payment logic was tangled into the order service, the notification system, a...
16 Apr 2024
What is Refactoring?
Refactoring is changing the structure of code without changing its behavior. You don't add features. You don't fix bugs. You improve the design so the cod...
14 Oct 2023
Refactoring Bad Smells in Code
Code smells aren't bugs. Your program still runs. But something is off. There's friction when you try to understand it, change it, or extend it. The term ...
14 Oct 2023
How Senior Engineers Approach Code Review
14 Oct 2023