Hi.
You can see solution in https://github.com/quasarframework/quasar/issues/2747
I think in your case it will be
@save="(val, initialValue) => saveCellEditPopup(val, initialValue, props.row.id)"

I created my simply Electron Quasar App from “Developing Electron Apps” Guide and run command “quasar dev -m electron -d”.
And then I open Crome DevTools for Node and would like debug electron-main.js, but see “eval(”…") strings.
I see in quasar-config.js from quasar-cli sources:
devtool: this.ctx.dev ? ‘#cheap-module-eval-source-map’ : '#source-map’
I think this is source of my troubles.
Help me please solve the problem.