TypeScript Version: 2.4.0

Code

import('./utils')
  .then(({ sum }) => {
    console.log(sum(1, 2))
  })
  .catch(console.error)

tsconfig.json (short version)

{
  "compilerOptions": {
    "moduleResolution": "node",
    "module": "es2015"
  }
}

Expected behavior:
No errors

Actual behavior:
Dynamic import cannot be used when targeting ECMAScript 2015 modules. with non-obvious reasons why.

Example repository

I get error Dynamic import cannot be used when targeting ECMAScript 2015 modules.
when I try to use dynamic import inside typescript project with "module": "es2015"
in configuration. The error message makes it clear that I can't use import() with
es modules but it doesn't make sense because import() is part of es modules.

However, it compiles correctly but throw annoing error.

I created a repository to reproduce an error.
npm run build-ts: compile ts files into build/ folder.
npm run build-webpack: compile js into dist/. (Then open index.html to see that everything works fine)