Build Project References, Declarations & Fast Builds as a system involving module resolution, runtime validation, declaration output, incremental builds, CI, and package boundaries—not only a compiler concern. Remember that TypeScript types are erased at runtime.
Build a Complete Mental Model
Build Project References, Declarations & Fast Builds as a system involving module resolution, runtime validation, declaration output, incremental builds, CI, and package boundaries—not only a compiler concern. Remember that TypeScript types are erased at runtime.
Apply It in Production TypeScript
Type-check an original Project References, Declarations & Fast Builds example in strict mode, then test valid values, null/undefined, malformed API data, a new union variant, and module boundaries. Fix the contract or validation instead of silencing errors with assertions or any.
After This Lesson
{
"files": [],
"references": [
{ "path": "./packages/domain" },
{ "path": "./packages/web" }
]
}
Run: tsc --build --verboseProjects build in dependency order with incremental caches.Try It Yourself
Type-check an original Project References, Declarations & Fast Builds example in strict mode, then test valid values, null/undefined, malformed API data, a new union variant, and module boundaries. Fix the contract or validation instead of silencing errors with assertions or any.
Type Safety Warning
Assuming a successful TypeScript compile proves API data and runtime behavior are valid.
Announcing TypeScript 7.0 — TypeScript