Investigate warning when build-storybook

[W01fw00d]

asset size limit: The following asset(s) exceed the recommended size limit (244 KiB).
WARN This can impact web performance.
WARN Assets:
WARN vendorsmain.97dd28042f064fdff6b6.bundle.js (1000 KiB)
WARN entrypoint size limit: The following entrypoint(s) combined asset size exceeds the recommended limit (244 KiB). This can impact web performance.
WARN Entrypoints:
WARN main (1.08 MiB)
WARN runtimemain.97dd28042f064fdff6b6.bundle.js
WARN vendors~main.97dd28042f064fdff6b6.bundle.js
WARN main.97dd28042f064fdff6b6.bundle.js
WARN
WARN webpack performance recommendations:
WARN You can limit the size of your bundles by using import() or require.ensure to lazy load some parts of your application.
WARN For more info visit https://webpack.js.org/guides/code-splitting/

[W01fw00d]

We are now using default webpack config from storybook: it is possible to make an improvement from our project?