ava nyc es module issue

A minimal reproduction for the issue nyc#1353 that nyc doesn't seem to instrument ES module code as expected.

How to use

After cloning the project, run these commands to reproduce:

1. npm install
2. npm run test

At this point, you will see the following output.

  2 tests passed
----------|---------|----------|---------|---------|-------------------
File      | % Stmts | % Branch | % Funcs | % Lines | Uncovered Line #s
----------|---------|----------|---------|---------|-------------------
All files |       0 |        0 |       0 |       0 |
----------|---------|----------|---------|---------|-------------------

Environment

Original reproduction environment.

node@14.17.6
nyc@15.1.0
ava@3.15.0