Inferred type predicates not working on filtering objects if type is explicitly set
Can someone explain why inferred type predicates don’t work on an array of objects if the type is explicitly set?
TypeScript 5.5 Inferred Type Predicates not working on filtering objects if type is explicitly set
Can someone explain, why inferred type predicates don’t work on an array of objects if the type is explicitly set?
Why can’t typescript understand the exact type returned from a Promise catch method?
Type ‘Promise<boolean | “stuff and things”>’ is not assignable to type ‘Promise<string | false>’.
Deep type inference to avoid boilerplate generics
I would love to know if there is any way to avoid defining generics down a “long” chain of types. I am trying to use the type of parameter schema
to type the parameter values
.
Typescript infers type never on Union of two types
In the following example, in the getAdditionalData
function, Typescript infers the type of value
to never
after validating the type through isBarType
. I would expect the type to be FooEntity
since Entity
can be either FooEntity
OR BarEntity
.
Typescript wrongly infer type never on Union of two types
In the following example, in the getAdditionalData
function, Typescript infers the type of value
to never
after validating the type through isBarType
. I would expect the type to be FooEntity
since Entity
can be either FooEntity
OR BarEntity
.
Infer correct parameter type
Let’s assume having the following made-up example given.
Inter correct parameter type
Let’s assume having the following made-up example given.