finprim: The TypeScript Library That Stops Teams From Rebuilding IBAN Validators for the Tenth Time
Every fintech team writes the same validators over and over. finprim is a zero-dependency TypeScript library that bundles financial primitives—IBAN validation, card checks, currency formatting, loan calculations—with branded types that catch bugs at compile time.
⚡ Key Takeaways
- finprim eliminates the repeated cycle of building and rebuilding financial validators across fintech teams 𝕏
- Branded types in TypeScript catch validation bugs at compile time, preventing entire categories of production errors 𝕏
- Zero dependencies, optional framework integrations, and built-in safety checks make it production-ready without rip-and-replace refactors 𝕏
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Originally reported by Dev.to
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