Split into separate files

[heyAyushh]

Problem

• code was all in one place, hard to read
• functions weren't reusable
• updating was a pain
• tree shaking wasn't working well, leading to big bundles

Solution

• split functions into separate files for better organization
• made functions reusable across the library
• easier to update and maintain
• improved tree shaking for smaller bundles

this change makes the code cleaner and faster.

[mikemaccana]

great work @heyAyushh !