Government systems have a specific lifecycle: built in months, maintained for years, touched by developers who weren't in the room when decisions were made. That's the environment types were invented for.
A TypeScript interface for a citizen record is a contract the compiler enforces. When the next maintainer adds a field, the type system walks them through every place that field matters. Documentation drifts; types can't.
The payoff shows up at refactor time. Renaming a field across a records system in plain JavaScript is a search-and-pray exercise. In TypeScript it's a compiler error list, which is to say, a checklist.
Strictness is the point. `strict: true`, no `any` escapes without a comment, and domain types that mirror the actual record, `PhilHealthNumber`, not `string`. The compiler becomes the first reviewer on every change.
