Extract parameters of an instance method using TypeScript

extract-parameters-typeof-typescript.ts

// Playground link: https://www.typescriptlang.org/play/?ssl=1&ssc=1&pln=19&pc=49#code/C4TwDgpgBAKuEB4YD4oF4oDsIHcoAoA6YgQwCcBzAZwC4oTMQBtAXQEp1UYBuAKF4DGAGxJUqUAEoB7KQFsk6eo1QBvXlChVgJYBAD8dHuqhTMAYTIQdEfFLDAAlqdpKQHNRoC+vb4JFioAFkQaTkoCAAPXUwAE3FQ+RUYhwAzFIhLTGAAcQhsMgcBOi0CzApPVWNTCytdW3snTBcVLBJZCGLgUooAGighCAA3CCE6TABXWQAjDKhPd29fFPHMAUdTKBiIFIdsBUjouNh4BATkZHxjMhlZOEhDHqqG5zoABXI2iF0yKgQASSa2lWEDuiBQTAA5NVLNYISxkEwAAwsXjuHz8LY7bD4YIJPotTCfOgAIj+wCgOCkZAA1lQAITEvoDYajKAARjmbG4QA

type Type<T> = new (...args: any[]) => T;

class Room<T = any> {
  state?: T;
  onCreate(options: any) {
  }
}

class MyRoom extends Room<{differentGeneric: string}> {
  onCreate(options: { name: string, level: number }) {}
}

function define<T extends Type<Room>>(
  roomType: T,
  options: Parameters<InstanceType<T>['onCreate']>[0]
) {
}

define(MyRoom, { name: "It works!", level: 1 });