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Replace any by unknown in definition files
See original GitHub issueSince the new unknown type was added, it makes sense to replace a lot (if not all) usage of any in the definition files with unknown. For example:
Array.isArray(a: unknown): a is unknown[];
JSON.parse(a: string): unknown;
However, this change will cause many errors in projects currently using the fact that the returned types are not type-checked. This means that the change could be controversial.
Issue Analytics
- State:
- Created 5 years ago
- Reactions:51
- Comments:16 (8 by maintainers)
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This is one of the biggest blind spots regarding type safety in big codebases. You can warn against using explicit
anywith linting, but you can’t change the types of all the declaration files@RyanCavanaugh now that you’ve backed off from strictAny, would you reconsider this? The original use case here (which motivated strictAny in the first place) would still be pretty valuable.