JavaScript Callable Object using proxy

index.js

'use strict'

class Callable extends Function {
  constructor() {
    super()    
    return new Proxy(this, {
      apply: (target, thisArg, args) => target._call(...args)
    })
  }
  
  _call(...args) {
    console.log(this, args)
  }
}

Thanks for the link, it's a good read.

you could also reuse the object itself!

class Callable extends Function {
  constructor() {
    super()    
    return new Proxy(this, this)
  }
  
  apply(...args) {
    console.log(this, args)
  }
}

@jed That one has a downside in that the arguments are going to be the normal arguments to apply, rather than just the arguments you call the object with. So calling new Callable()('foo') will call apply(object, undefined, ['foo']), rather than apply('foo').