feat: expose error type

[multivoltage]

I tried to export EtaError types introducing new types like @nebrelbug did in THIS issue.

Some point about he PR:

• I put an EtaXXXError instead EtaError in all point. So at the and I asked myself "Is now useless EtaError type? Can I remove it"
• I added a test for each error interface. I tried to throw starting from top-level api. For example using .render() even if the exception is inside .readFile()
• I added never as return type since for me a function that throw 100% of times an error equals to a function that never run an error (token from TS docs)

I don't know if this PR follow exactly the structure described here: https://github.com/eta-dev/eta/issues/243#issuecomment-1646243319

But probably this PR can be a starting point and I'm happy to change some part after review

[nebrelbug]

@multivoltage thanks for the PR! This looks great. Just a few changes before I can merge:

• Rename EtaRuntimeErr to EtaRuntimeError
• I think it would be great if all Eta errors extended a base class EtaError, which could just be declared like class EtaError extends Error {}.

I appreciate the TypeScript updates!

[nebrelbug]

Also if you can make sure to follow the Commitlint format for commit messages, that's what's causing tests to fail right now. Thanks!!

[multivoltage]

npx commitlint --from ee0a1d44addd162b53b20329799b93628fcba22e~6 --to ee0a1d44addd162b53b20329799b93628fcba22e --verbose
⧗   input: feat: export EtaNameResolutionError
✔   found 0 problems, 0 warnings
⧗   input: feat: add use case for EtaFileResolutionError
✔   found 0 problems, 0 warnings
⧗   input: feat: export EtaFileResolutionError
✔   found 0 problems, 0 warnings
⧗   input: feat: use custom error for compile() api
✔   found 0 problems, 0 warnings
⧗   input: feat: export EtaRuntimeError
✔   found 0 problems, 0 warnings
⧗   input: feat: export EtaParseError
✔   found 0 problems, 0 warnings

In my local pc seems ok (node 18)

[nebrelbug]

@multivoltage hmm, you're right. I'm not actually sure what the problem is, but it seems like it may be a problem with the version of commitlint that the GitHub Action is installing.

[multivoltage]

@nebrelbug I replicated issue. In. my local pc like I said I run "npx commitlint....".

But in you yaml you install before

      - name: Install commitlint
        run: |
          npm install conventional-changelog-conventionalcommits
          npm install commitlint@latest

and then use npx.

I think you have 2 possible fix:

1. remove step to install the two deps and keep going to use "npx commitlint" like in my local pc.
2. Installing same deps in my pc and run "npx commitlint" the error is the same. I solved running also @commitlint/format

Please give me a feedback. Do you plan to fix this in seperate pr?

[nebrelbug]

@multivoltage I'll fix the commitlint issue in a separate PR later. In the meantime, I'll merge anyways if you can fix the issues I mentioned above.

[multivoltage]

@nebrelbug Sorry. I did not notice your first comment :)

I think it would be great if all Eta errors extended a base class EtaError, which could just be declared like class EtaError extends Error {}.

I thought the same thing inirtially but then I ask my self?

What EtaError give me more than a basic Erro? Anyway I will do it :)

[nebrelbug]

@multivoltage thank you! Having a base EtaError class will be useful if people want to catch all errors that Eta throws.

[nebrelbug]

@multivoltage released in Eta 3.4.0:)