Dev Tools · 2h ago
Extract Business Rules as Typed Seams, Not Config Files
The article argues that externalizing business rules should be a typed architectural seam, not a product decision. In TypeScript, this means defining typed inputs and outputs with a rule client, validated by a schema. The key is a contract test to catch silent breaks when rules change.
Meridian48 take
The advice is sound but understates the operational complexity of maintaining rule engines at scale—teams often underestimate the testing and monitoring burden.
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Pulling Business Rules Out of Your Service Isn't a Rewrite. It's a Seam. →
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