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Writing exhaustive switch statements in TypeScript (arendjr.nl)

submitted 9 months ago by arendjr to c/typescript

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Today I'm sharing a little trick that I like to use to make switch statements cleaner and more type-safe. Happy to hear other ideas!

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[–] arendjr 5 points 9 months ago

Generally, I would recommend against throwing in the default case, since it will actually reduce your type safety (exceptions bypass all your other types). But I learned that with another clever trick this can be avoided, giving both runtime and compile time safety: https://exploringjs.com/tackling-ts/ch_enums.html#exhaustiveness-checks

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