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by SebastianKra 607 days ago
I think you're misunderstanding the billion dollar mistake. It was not statically tracking null-references. In JS, everything is dynamic so it doesn't apply, and TS does check them.

> My goal was to ensure that all use of references should be absolutely safe, with checking performed automatically by the compiler. But I couldn't resist the temptation to put in a null reference

https://en.wikipedia.org/wiki/Tony_Hoare

(Emphasis mine)