fix: ensure as isn't always matched, but only when it's a full word

[favna]

Noticed this when trying to transform isTextBasedChannel which includes as and gave this as result:

[sidvishnoi]

Thanks @favna! I was thinking of archiving this project, but apparently people do use it.

[favna]

Thanks @favna! I was thinking of archiving this project, but apparently, people do use it.

Yeah at Sapphire we use it in this package: https://github.com/sapphiredev/documentation-plugins/tree/main/packages/ts2esm2cjs which powers the language tabs on our guide, seen here: https://www.sapphirejs.dev/docs/Guide/getting-started/getting-started-with-sapphire#creating-an-indexjs-file

This particular issue was on this page in fact: https://www.sapphirejs.dev/docs/Guide/arguments/creating-your-own-arguments. I wasn't sure if this package was still being actively maintained so I had temporarily copied the code with license but now I can switch back to the published package :)

[sidvishnoi]

Oh, that's a brilliant use case!