The TypeScript handbook
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The official tour of the type system — worth reading once end to end rather than in search-result fragments.
External
TypeScript · typescriptlang.org#typescript
#reference
Catching a class of bug before the browser ever runs the code — and knowing where types stop helping.
3 articles
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The official tour of the type system — worth reading once end to end rather than in search-result fragments.
Listed inRuntime ValidationType Checkerson
Types vanish at runtime. Parsing untrusted input at the boundary is what makes them true.
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Structural typing, generics, narrowing, and the compiler flags that decide how much it catches.