TypeScript
Object is of type unknown
Object is of type 'unknown'.
TypeScript blocked an operation because the current value is typed as unknown and has not been narrowed to a usable type.
Error AtlasError Documentation and ResolutionObserved message
Object is of type 'unknown'.
Why it happens
- A value from a catch block, external API, or generic source is typed as unknown.
- The code tries to read properties or call methods before narrowing the value.
- A helper returns unknown to force explicit type checking downstream.
How to fix it
- Narrow the value with runtime checks such as typeof, instanceof, or custom type guards.
- Use a type assertion only when you are certain of the runtime shape.
- Refactor APIs so callers receive a more specific type where appropriate.
Official reference
TypeScript Handbook: More on FunctionsRelated errors
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