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A comment on 38% of bugs at Airbnb could have been prevented by using types. Parent comment

Re:38% of bugs at Airbnb could have been prevented by using ... by smt88 on Sunday February 10, 2019 @11:08PM (#19131992)
> null/undefined is an inhabitant of every type in typescript

This isn't true as far the way you stated it. TypeScript types are not nullable by default.

How can you use existing JS libraries without supporting null anyway?

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