Bundle size increase in Nebular 9

[Ashwin-op]

Issue type

I'm submitting a ... (check one with "x")

• [ ] bug report
• [ ] feature request

Issue description

Current behavior: There is almost a 250kb increase in the bundle size from nebular 8 to 9, will this affect the production build of angular if upgraded?

Expected behavior:

Steps to reproduce:

Related code:

insert short code snippets here

Other information:

npm, node, OS, Browser

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Angular, Nebular

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