typescript
Invalid mapped type syntax with extra properties
A mapped type may not declare properties or methods
Fixes
- 1.Use intersection type to combine mapped type with additional properties: MappedType & { extra: string }
- 2.Move additional properties to a separate interface and intersect
- 3.Use the newer key remapping syntax: [K in keyof T as NewKey]: T[K]
typescriptmapped-types
Related Errors
typescript3 fixes
TS2304: Cannot find name 'X'
TS2304.*Cannot find name
- •Import the type/value
- •Install @types/ package
typescript3 fixes
TS2305: Module has no exported member
TS2305.*has no exported member
- •Check export name spelling
- •Verify package version has that export
typescript3 fixes
TS2307: Cannot find module or its type declarations
TS2307.*Cannot find module
- •Install the package or @types/ package
- •Add module declaration in .d.ts file