Type Alias MethodNames<T>

MethodNames: {
[K in keyof T]-?: T[K] extends (...args: any[]) => any ? K : never
}[keyof T]

Extract method names from a class.

Type Parameters

T
A class or object type

Remarks

Returns a union of all callable method names of the class. Does not include readonly or non-function properties.

Example

class Service { getData() {} setData() {} value = 123; }
type Methods = MethodNames< Service >; // "getData" | "setData"