Utility Types

The package includes a collection of useful TypeScript types that can help with common use-cases in TypeScript projects.

Type Aliases

Constructor<T>: (…args) => T

Defined in: index.ts:24

A type that represents a class constructor.

• T = any

The class.

…any[]

T

class MyClass {}
type MyConstructor = Constructor<MyClass>;

OmitFunctionMembers<T>: { [K in keyof T as T[K] extends Function ? never : K]: T[K] }

Defined in: index.ts:36

Creates a subsidiary type that omits all function members from a given type.

• T

The type to omit function members from.

interface MyInterface {
  foo: string;
  bar(): void;
}
type MyOmitted = OmitFunctionMembers<MyInterface>; // { foo: string; }

OptionalProperties<T>: { [K in keyof T as {} extends { [P in K]: T[K] } ? K : never]: T[K] }

Defined in: index.ts:12

A type that extracts the optional properties from another type.

• T

The type to extract optional properties from.

interface MyInterface {
  foo: string;
  bar?: string;
}
type MyOptional = OptionalProperties<MyInterface>; // { bar?: string; }