Dynamic imports in 4.29.0

[arunas-bendoraitis]

Bug report

After 4.29.0 was released (i had "webpack": "^4.25.1" in package.json) my build was failing because dynamic imports were not recognized. Got the following error:
Module parse failed: 'import' and 'export' may only appear at the top level.
I removed the caret from package json and with 4.25.1 it works as expected

What is the current behavior?
My build failed

If the current behavior is a bug, please provide the steps to reproduce.
Not completely sure but this piece of code was not working:
if (urls.is('')) {
import(/*webpackChunkName: "dashboard" */'../dashboard');
}

What is the expected behavior?
Dynamic imports work as expected

Other relevant information:
webpack version:
Node.js version:
Operating System:
Additional tools:

[roblan]

I have slightly different error, but also with dynamic imports in 4.29.0

Module parse failed: Unexpected token You may need an appropriate loader to handle this file type.

line

var component = props.custom ? import( /* webpackChunkName: "dynamic-custom" */ './src/CustomDynamicModule').then(function (module) {

[sokra]

Duplicate of #8656