How does 'Tail-Recursive Conditional Types' optimize complex type manipulation?

TS 4.5+ supports tail-call optimization for recursive conditional types, allowing significantly deeper recursions[cite: 1].

Historically, recursive types hit a limit around 50 levels. By placing the recursive call in the 'tail' position of a conditional branch, the compiler flattens the evaluation. This allows for massive operations like deep string splitting or tuple manipulation that would otherwise crash the compiler[cite: 1].