await/async transpilation question

[ShiMeiWo]

I tried this plugin and got stuck.

I made this two files:

// rollup.config.js
import nodent from 'rollup-plugin-nodent';

export default {
  entry: 'src/scripts/Main.js',
  dest: 'public/index.js',
  format: 'iife', 
  sourceMap: true,
  plugins: [
    nodent(),
  ],
}

// src/scripts/Main.js
async function waitable(param){
  return new Promise(function(resolve) {
    console.log("!");
    setTimeout(resolve, param);
  });
}

async function main() {
  console.log('A');
  await waitable(1000);
  console.log('B');
}

main();

I transpiled them and received it:

// public/index.js
(function () {
'use strict';

function waitable(param) {
    return (function ($return, $error) {
        return $return(new Promise(function (resolve) {
            console.log("!");
            setTimeout(resolve, param);
        }));
    }).$asyncbind(this, true);
}

function main() {
    return (function ($return, $error) {
        console.log('A');
        return waitable(1000).then((function ($await_1) {
            console.log('B');
            return $return();
        }).$asyncbind(this, $error), $error);
    }).$asyncbind(this, true);
}

main();

}());

// "Uncaught TypeError: (intermediate value)(intermediate value).$asyncbind is not a function"

1. How do I generate $asyncbind() function?
2. How can Promise in waitable() get transpiled?

Thanks.

[oligot]

1. There is this issue in nodent regarding the $asyncbind function, but what I generally do is pass some options to nodent so that it doesn't depend on this function:

import nodent from 'rollup-plugin-nodent';

export default {
  entry: 'main.js',
  dest: 'bundle.js',
  format: 'iife',
  plugins: [nodent(
    promises: true,
    noRuntime: true
)],
  sourceMap: true
};

2. Promise are not transpilable; you have to use a polyfill like for example es6-promise
   

[ShiMeiWo]

@oligot
I've tried them just now, and I get transpiled code what I want.
Thank you so much!