Patterns you can use
Practical TypeScript, Effect, React, and XState techniques you can apply to real projects.
Every Wednesday · 5 minutes · Free
Build type-safe software that lasts.
One focused email about TypeScript, Effect, React, XState, local-first architecture, and AI-assisted development, drawn from what I am building and teaching.
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Ideas behind the code
Typeonce shows the implementation.
The newsletter explores the thinking, decisions, and lessons that shaped it.
Architecture decisions
The constraints, tradeoffs, and boundaries behind software that remains reliable as it grows.
Notes from active work
What I am learning while building courses, tools, local-first applications, and AI-assisted workflows.
Written by Sandro Maglione
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