refactor: export cjs and esm modules

[magicmatatjahu]

Description

Export cjs and esm (with TS typings) modules from package. It's needed to packages which will consume parser-js. ESM is for website and treeshakable apps and CJS is for NodeJS app (but never versions can use ESM).

cc @smoya

Related issue(s)
Part of #481
Part of #482

[sonarcloud]

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[jonaslagoni]

Is there a reason why you don't use the same behavior as we have with other TS projects i.e. having it under lib/cjs etc 🤔 ?

Not that's it's important but you know, consistency is great 😆

[magicmatatjahu]

Is there a reason why you don't use the same behavior as we have with other TS projects i.e. having it under lib/cjs etc 🤔 ?

Tbh our other projects had bad decision to put everything to lib, separate esm and cjs folders is "better" for me and I saw that solution in another projects. Also by this decision we can easily support https://nodejs.org/api/packages.html#package-entry-points (in the future) but I checked and that feature doesn't work very well with current TS entry points and in old NodeJS versions. So yeah, wait 6months-1year and we can enable it :)

[magicmatatjahu]

/rtm