resolve chunk size issue with build

[hisownspace]

there is a message saying

(!) Some chunks are larger than 500 kB after minification. Consider:

• Using dynamic import() to code-split the application
• Use build.rollupOptions.output.manualChunks to improve chunking: https://rollupjs.org/configuration-options/#output-manualchunks
• Adjust chunk size limit for this warning via build.chunkSizeWarningLimit.

It might be caused by the large Channel.jsx file (there are three Components defined in there). Start by breaking up that file, and then explore other options. Two good avenues are given above (the third option supposedly just hides the warning, and will prevent successful deployment)