TLDR Index
TLDR Dev

TLDR DEV 2025-11-24

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01ARTICLES & TUTORIALS

SHADERS

Shaders are small programs that run in parallel, using mathematical calculations and knowledge of x and y coordinates to create high-fidelity graphics. The graphics pipeline consists of vertex shading, rasterization, and fragment shading, each playing a specific role in determining the final color of each pixel. Various APIs like OpenGL, DirectX, Metal, and CUDA facilitate interaction with the GPU for both graphics rendering and general-purpose computing tasks.

makingsoftware.com29 min read

TIL: `SATISFIES` IS MY FAVORITE TYPESCRIPT KEYWORD

The `satisfies` keyword in TypeScript acts as a type-safe cast, making sure an assignment is assignable to a provided type while allowing TypeScript to infer a more specific type based on the value. It's different from explicit variable type annotations, as it's best when specific type enforcement and value-based type inference are needed.

sjer.red4 min read

ABSOLUTELY EVERYTHING YOU NEED TO KNOW ABOUT ACT() IN REACT TESTS

The `act()` function in React tests makes sure that all state changes and side effects are fully processed before assertions run, preventing tests from checking against outdated state values. While React Testing Library functions like `userEvent` and `findBy...` automatically wrap their operations in `act()`, you'll need to manually use it when testing hooks with state changes, directly calling DOM methods like `button.click()`, or manually dispatching events.

howtotestfrontend.com8 min read

02OPINIONS & ADVICE

ARE CONSUMERS JUST TECH DEBT TO MICROSOFT?

There's a potential shift in Windows market share among consumer computers. Microsoft's focus has shifted away from consumers towards AI and corporate clients, leading to a lack of excitement around Windows. The rumored affordable MacBook and Valve's Steam Machine are potential disruptors that could attract consumers and gamers away from Windows.

birchtree.me3 min read

MARKDOWN IS HOLDING YOU BACK

Markdown has limitations for technical content due to its lack of structure and semantic markup. While Markdown is easy to use, its implicit typing and inconsistent flavors make content reuse, machine consumption, and scalability harder. Alternatives like reStructuredText, AsciiDoc, DocBook, and DITA have improved content structure and transformation capabilities.

newsletter.bphogan.com11 min read

WHEN EVERYONE'S A DEVELOPER, HOW DO WE PROMOTE THE WEB PLATFORM OVER REACT?

AI code generation tools are undermining web platform adoption by defaulting to React/Next.js solutions, especially as "vibe coders" (non-programmers using AI to create apps) increasingly rely on these tools without understanding native web capabilities. This trend is creating worse web experiences, and some solutions include teaching people to prompt for vanilla web solutions, creating open datasets of framework-free code, and spotlighting projects that use modern web features without heavy frameworks.

webtechnology.news8 min read

03LAUNCHES & TOOLS

SMARTCOMMIT

Smartcommit is an AI-powered CLI tool for creating semantic, Conventional Commits messages. It analyzes staged changes, asks clarifying questions about the code's intent, and then generates a structured commit message.

github.comGitHub repository

TRAVELS

Travels is a fast, framework-agnostic undo/redo library that uses JSON patches to store only the differences between states. It is more memory-efficient than traditional snapshot-based systems. Travels uses Mutative for fast immutable updates and integrates with popular frameworks like React, Vue, and Zustand. It has a mutable mode for reactive states, an archive mode for controlling when changes are saved, and a maxHistory option to limit memory usage.

github.comGitHub repository

GITLOGUE

Gitlogue is a command-line tool that visually replays Git commit history with animated typing, syntax highlighting, and file tree transitions. It can be used as a screensaver, for educational purposes, presentations, or to create coding demos.

github.comGitHub repository

04MISCELLANEOUS

HOW WE PREPARE SHOPIFY FOR BFCM (2025)

Shopify prepared for Black Friday Cyber Monday (BFCM) from March to October by running bimonthly "fire drills" that simulated 150% of the previous year's peak traffic, conducting chaos engineering exercises called "Game Days," and systematically identifying and fixing infrastructure bottlenecks. Its preparation included capacity planning across multiple cloud regions, load testing with its tool, "Genghis," and creating a "Resiliency Matrix" to document vulnerabilities and response procedures.

shopify.engineering8 min read

IS AI CREATING A NEW CODE REVIEW BOTTLENECK FOR SENIOR ENGINEERS?

The increasing use of AI for code generation is creating a bottleneck in code review. Senior engineers are struggling to keep up. While AI can quickly produce code, integrating it with existing systems, ensuring security, and handling edge cases is still challenging.

thenewstack.io8 min read