Debugging Mocha

Using Node Debugger with Mocha

Assumption

Your package.json that has the following lines:

scripts: {
    "mocha": "mocha"
}

Steps

• nodejs v6.3.0 and mocha v3.1.0

  • you can use V8 inspector integration

  • --inspect activates V8 inspector integration

  • --debug-brk adds a breakpoint at the beginning

  • You can run: npm run mocha -- --inspect --debug-brk

• nodejs v7.6.0 and mocha v3.3.0

  • You can run: npm run mocha -- --inspect-brk

    • --inspect-brk is a shorthand for --inspect --debug-brk

References

• https://stackoverflow.com/questions/14352608/whats-the-right-way-to-enable-the-node-debugger-with-mochas-debug-brk-switch#answer-39901169