~/t/react-ava-workshop ❯❯❯ npm test ⏎ master
> react-ava-workshop@1.0.0 test /Users/bsr/tmp/react-ava-workshop
> ava "app/**/*.test.js" --verbose
Uncaught Exception: /Users/bsr/tmp/react-ava-workshop/app/components/Toggle.test.js
TypeError: Path must be a string. Received undefined
at assertPath (path.js:7:11)
at Object.dirname (path.js:1324:5)
at /Users/bsr/tmp/react-ava-workshop/node_modules/babel-core/lib/transformation/file/options/option-manager.js:353:36
at /Users/bsr/tmp/react-ava-workshop/node_modules/babel-core/lib/transformation/file/options/option-manager.js:375:22
at Array.map (native)
at OptionManager.resolvePresets (/Users/bsr/tmp/react-ava-workshop/node_modules/babel-core/lib/transformation/file/options/option-manager.js:364:20)
at OptionManager.mergePresets (/Users/bsr/tmp/react-ava-workshop/node_modules/babel-core/lib/transformation/file/options/option-manager.js:348:10)
at OptionManager.mergeOptions (/Users/bsr/tmp/react-ava-workshop/node_modules/babel-core/lib/transformation/file/options/option-manager.js:307:14)
npm ERR! Test failed. See above for more details.
just cloning and running gave below error
which has been solved by updating deps to latest.