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• I havesearched for related issues and found none that match my proposal.
• I have searched thecurrent rule list and found no rules that match my proposal.
• I haveread the FAQ and my problem is not listed.

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Link to the rule's documentation

https://typescript-eslint.io/rules/switch-exhaustiveness-check/

Description

This issue is there to discuss whether therequireDefaultForNonUnionoption should be enabled by default.
This issue isnot about whether theswitch-exhaustiveness-check should be part of any preset or the option to be removed entirely.

Fail

declareconstvalue:number;switch(value){case0:return0;case1:return1;}

Pass

declareconstvalue:number;switch(value){case0:return0;case1:return1;default:return-1;}

Additional Info

Based on#7880 (comment)

• feat(eslint-plugin): [switch-exhaustiveness-check] add requireDefaultForNonUnion option #7880 (comment)

Partial previous discussion:#2959

• [switch-exhaustiveness-check] Require default case if discriminant type is not a union #2959