webpack transformed

app.bundle.js

!function(e,t){for(var r in t)e[r]=t[r]}(exports,function(e){var t={};function r(n){if(t[n])return t[n].exports;var o=t[n]={i:n,l:!1,exports:{}};return e[n].call(o.exports,o,o.exports,r),o.l=!0,o.exports}return r
.m=e,r.c=t,r.d=function(e,t,n){r.o(e,t)||Object.defineProperty(e,t,{enumerable:!0,get:n})},r.r=function(e){"undefined"!=typeof Symbol&&Symbol.toStringTag&&Object.defineProperty(e,Symbol.toStringTag,{value:"Module
"}),Object.defineProperty(e,"__esModule",{value:!0})},r.t=function(e,t){if(1&t&&(e=r(e)),8&t)return e;if(4&t&&"object"==typeof e&&e&&e.__esModule)return e;var n=Object.create(null);if(r.r(n),Object.defineProperty
(n,"default",{enumerable:!0,value:e}),2&t&&"string"!=typeof e)for(var o in e)r.d(n,o,function(t){return e[t]}.bind(null,o));return n},r.n=function(e){var t=e&&e.__esModule?function(){return e.default}:function(){
return e};return r.d(t,"a",t),t},r.o=function(e,t){return Object.prototype.hasOwnProperty.call(e,t)},r.p="",r(r.s=2)}([function(e,t){e.exports=require("k6/http")},function(e,t){e.exports=require("k6")},function(e
,t,r){"use strict";r.r(t);var n=r(0),o=r.n(n),u=r(1);t.default=function(){o.a.get("https://httpbin.test.loadimpact.com/get"),Object(u.sleep)(2*Math.random()+3)}}]));

custom_main.js

var http = require("k6/http");
var sleep = require("k6").sleep;

exports.default = function () {
    http.get("https://httpbin.test.loadimpact.com/get");
    sleep(Math.random() * 2 + 3);
}

main.js

import http from "k6/http";
import { sleep } from "k6";

export default function() {
    http.get("https://httpbin.test.loadimpact.com/get");
    sleep(Math.random() * 2 + 3);
}