[fix] fix for starting demo-app

[igorDykhta]

Fir for starting demo-app.

At the moment running yarn start produces the following error:

ERROR in ./node_modules/@loaders.gl/core/node_modules/@probe.gl/log/dist/utils/hi-res-timestamp.js 7:27
Module parse failed: Unexpected token (7:27)
You may need an appropriate loader to handle this file type, currently no loaders are configured to process this file. See https://webpack.js.org/concepts#loaders
|     let timestamp;
|     if (isBrowser() && window.performance) {
>         timestamp = window?.performance?.now?.();
|     }
|     else if ('hrtime' in process) {

Possibly related to #2593

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[echo292]

@ibgreen Kepler.gl 3.0 release doesn't run as per current documentation. Do you have a list of steps to run the demo we can publish in the documentation?

Regards,

E

[indranildeveloper]

Are there any plans to migrate over to vite?