After installing this tool, when trying to run it, I get the error:
Error: Failed to initialise launcher service unknown: Error: Couldn't initialize "@wdio/devtools-service".
Error [ERR_MODULE_NOT_FOUND]: Cannot find package 'stack-trace' imported from /Users/klamping/Sites/lib_qa/node_modules/@wdio/devtools-service/dist/index.js
Running 'npm i --save-dev stack-trace' fixes the issue. So likely this package needs to be added to the dependencies.