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TypeScript Quiz Practice
Active Recall Drill Session
← Exit Session
Question 1 of 1
medium
TypeScript
What practical benefit can explicit variance annotations provide for large, complex generic library types?
A
They make the compiled JavaScript run faster
B
They can measurably speed up tsc's type-checking, since the compiler doesn't need to re-derive variance from scratch
C
They eliminate the need for any type-checking at all
D
They automatically fix all type errors in the codebase
Check Answer