chore: add support for cjs

[henrinormak]

This should resolve #6

Tested it out in CJS and it seemed to work, but as I'm not too familiar with tsup, looking for feedback

[zfben]

@henrinormak did you test it in jest? I found some wired bug when run it in jest.

[henrinormak]

I did test it, what bug did you find? In a really simple setup where I simply started a container, it worked, but when I tried to integrate it into a more complex existing project, I ran into #8 (at least error message was the same about '0' being undefined) - I assumed that was something different and not related to the CJS change I was making.

[zfben]

I did test it, what bug did you find? In a really simple setup where I simply started a container, it worked, but when I tried to integrate it into a more complex existing project, I ran into #8 (at least error message was the same about '0' being undefined) - I assumed that was something different and not related to the CJS change I was making.

I created an example for the bug: https://github.com/zfben/pgmock/actions/runs/8698477123/job/23855517922

Not sure why it happens.

[lautis]

The bug is present in Jest even if using ESM. It's coming from https://github.com/stackframe-projects/pgmock/blob/main/src/dependencies/libv86.js#L1497 – the a instanceof ArrayBuffer returns false even the passed argument is an array buffer. This is likely related to jestjs/jest#2549

[zfben]

@henrinormak @lautis I have fixed the cjs and jest issue in #14

[N2D4]

Merged in #14!