'any' Considered Harmful, Except For These Cases
📰 typescript
Good advice to not send just a screenshot of your borken code ;)
weeklyfoo #22 / 2024-03-04typescriptplayground
A 10x Faster TypeScript
Today I’m excited to announce the next steps we’re taking to radically improve TypeScript performance.
weeklyfoo #76 / 2025-03-17typescriptperformance
A checklist for your tsconfig.json
In order to feel more confident about my tsconfig.json, I decided to go through the tsconfig.json documentation, collect all commonly used options and describe them below
weeklyfoo #68 / 2025-01-19tsconfigtypescript
Adding type safety to object IDs in TypeScript
That’s a neat approach: for example if you prefix your user ids with user_ you can implement a type check for it.
weeklyfoo #18 / 2024-02-05typescript
Announcing TypeScript 5.6
Clean React with TypeScript
How TypeScript can help you to implement React components.
weeklyfoo #52 / 2024-09-30typescriptreact
Enhancing TypeScript
Essential tsconfig.json options you should use
Explicit Resource Management: Exploring JavaScript's and TypeScript's new feature
<await using something = await something()> explained
weeklyfoo #16 / 2024-01-22javascripttypescript
How TypeScript can help in modelling business workflows
Interesting approach to implement workflows. Feels kind of overengineered but I like the concept. Especially if applications and workflows grow this would be very benificial.
weeklyfoo #18 / 2024-02-05typescriptworkflows
Hyper-Typing
In this article, I talk about an inherent trade-off in TypeScript’s type system: stricter types are safer, but often more complex.
weeklyfoo #85 / 2025-05-19typescript
Learn Zod So You Can Trust Your Data and Your Types
Zod is a convenient TypeScript validation library that lets you define how data should look, validate some data, and then enjoy the confidence of validated data with accurate types.
weeklyfoo #76 / 2025-03-17zodtypescript
Michigan TypeScript Founder Successfully Runs Doom Inside TypeScript's Type System
Michigan TypeScript founder Dimitri Mitropoulos implements WebAssembly runtime in TypeScript types, enabling Doom to run after processing 177 terabytes of type definitions.
weeklyfoo #74 / 2025-03-03typescriptdoom
Migrating 160,000 Lines of Production Banking JavaScript to TypeScript with Zero Downtime
TypeScript has become the de facto standard for building robust, maintainable, and scalable JavaScript applications. Yet, migrating a large production codebase to TypeScript can be a daunting task, especially when you’re dealing with 160,000 lines of mission-critical JavaScript and users with real money in your system, and their tax returns to submit.
weeklyfoo #74 / 2025-03-03typescript
My Backend Stack Is Just TypeScript + Postgres. Here’s Why That’s Enough
Most people overthink their backend way too early. You start building a new product and suddenly you’re researching Kafka, Redis, background workers, message queues, analytics pipelines, caching layers, and five microservices. But if you’re being honest, you probably don’t need most of that.
weeklyfoo #82 / 2025-04-28typescriptpostgres
Node.js Now Supports TypeScript By Default
Speeding up the JavaScript ecosystem - Isolated Declarations
TypeScript’s new isolated declaration feature is a game changer for sharing code among developers.
weeklyfoo #41 / 2024-07-14typescript
Testing Frontend
Lessons from over a million lines of TypeScript at Palantir
weeklyfoo #53 / 2024-10-07testingtypescript
The TSConfig Cheat Sheet
Total TypeScript Essentials
Essentials is a book for devs of all levels to learn advanced type manipulation and real-world application development patterns in TypeScript.
weeklyfoo #41 / 2024-07-14typescriptlearning
TypeScript - Branded Types
TypeScript 5.5 - A Blockbuster Release
Typescript support in Nodejs
It is possible to execute TypeScript files by setting the experimental flag —experimental-strip-types.
weeklyfoo #43 / 2024-07-29nodetypescript
Write your own Zod
If you’re interested how zod works under the hood and think about writing your own zod, then this is a great starting point.
weeklyfoo #2 / 2023-10-16typescriptzod