nyc not working with project type module (esm)

[manuelbarzi]

Expected Behavior

to extract a code coverage report in text and html format for my node project working as a module (with esm)

Observed Behavior

NOT WORKING!

=============================== Coverage summary ===============================
Statements   : Unknown% ( 0/0 )
Branches     : Unknown% ( 0/0 )
Functions    : Unknown% ( 0/0 )
Lines        : Unknown% ( 0/0 )
================================================================================

Troubleshooting steps

• [ YES] still occurring when I put cache: false in my nyc config

Environment Information

  System:
    OS: macOS 14.1.1
    CPU: (8) arm64 Apple M2
    Memory: 40.91 MB / 16.00 GB
  Binaries:
    Node: 21.6.0 - /usr/local/bin/node
    npm: 10.2.4 - /usr/local/bin/npm
    pnpm: 8.10.5 - /usr/local/bin/pnpm
  npmPackages:
    nyc: ^15.1.0 => 15.1.0 

[nuxy]

Experiencing the same issue in Node: v20.11.0 when running ESM code.

Tested with, or without --require esm

[adamreisnz]

Duplicate of #1530 I think

[manuelbarzi]

finally c8 worked for me, instead of nyc (which is still failing):

c8 --experimental-monocart --reporter=html --reporter=text mocha logic/*.spec.js

(monocart-coverage-reports dependency must be installed)