@ject/mixin

import { Callable } from '@ject/mixin'
// inherit the class Callable
class CallableClass extends Callable {
  constructor (a, b) {
    super(row => this.a + this.b + row)
    this.a = a
    this.b = b
  }
}

const callableClass = new CallableClass(5, 4)
console.log(callableClass(3)) // 12