I'm trying to create a TypeScript method that merges an arbitrary number of generic lists into a new list, where the new list's type is a union of the ...
I'm trying to create a TypeScript method that merges an arbitrary number of generic lists into a new list, where the new list's type is a union of the ...
The interpreter is smart enough to infer that the result of the filter function will be an array of strings, yet it thinks that is not assignable to t ...
I want to create a function that combines the values of string|number arrays. So after trying extending generic param with union type I get weird beha ...
I'm building a dropdown-style component the value and options are distinct props. I'm hoping to use Typescript to ensure that the value is a valid opt ...
consider this type and this generic: type Data = { item: number }; type Generic<T> = { obj: T; }; now this is an instance of it: const te ...
I have the following types type A = { foo: number bar: number } type B = { foo: string bar: string } And I want to write a function f() th ...
The code below defines a function stringsToDates that will take a primitive, object, or Promise and recursively convert any ISO8601 date strings that ...
So here the problem is that I want to pass T which could be string, number, boolean, object or array or a function the thing is I can't figure out how ...
So, I have interface for select. I need have type for value. If multiple is equal true, value type must be string[] or string if multiple disabled. ...
I want to make an interface that can infers a type T from the return value of the function data so the function step can receive as a parameter the ty ...
I want to type a JavaScript Proxy that allows access to arbitrary properties. A contrived example, an object that maps every property to it's own prop ...
I have some JSON data that I've strongly typed with an as const assertion. const myList = [ { type: 'uint256'}, { type: 'address'} ] as const; ...
I have function with generic type. But it return an error Type 'boolean' is not assignable to type 'string'. How can I fix this generic type issue ...
I have the following TS code with multiple interfaces, components and a key/interface map. interface FooProps { 'keyInFoo': string } const Foo = ...
I am writing a wrapper class that will contain functions for interacting with the user entity, such methods as checking that the user is a guest, func ...
I've got a function with a generic that is a tuple of 1 or a tuple of 2 elements. I want to ensure that all properties used in the function use the sa ...
Sorry if the title is not very clear, but I don't know how to phrase my problem better. I have a Process class: when instantiating a new Process O ...
I would like to have a generic type predicate that allows me to check the type of an object's property. To illustrate this, I want to achieve the fol ...
I've been scratching my head over this for a while now, so I've decided to ask the question here on Stackoverflow in the hopes that somebody will be a ...
I am working on a TypeScript library (here it is) for algebraic data types (or whatever one wishes to call them), and am struggling with some of the m ...