Stop Relying on TypeScript Interfaces for Financial Data: Why Strict Runtime Schema Validation with Zod is Non-Negotiable
This story is from 2026-10-10. It is preserved in the archive; the latest stories are on the live feed.
If you are building financial software, fintech applications, or double-entry accounting ledgers in TypeScript, we need to have an uncomfortable conversation. Every single day, senior engineers write code like this: interface IncomingPaymentRequest { amount : string ; currency : string ; sourceAcco…
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- 2026-10-10 20:00 · DEV Community — AI
Stop Relying on TypeScript Interfaces for Financial Data: Why Strict Runtime Schema Validation with Zod is Non-Negotiable