feat: Improve error message when passing an Array while a single Element is expected

[juanca]

What: New error message when passing an Array.

Why: This can be a quick typo when using screen.getAll* or screen.queryAll* queries.

How: Type checking for Array.

Checklist:

• Documentation added to the
  docs site N/A
• Tests
• Typescript definitions updated N/A
• Ready to be merged
  

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[codecov]

Codecov Report

Merging #906 (b425e0c) into master (f7b5c33) will not change coverage.
The diff coverage is 100.00%.

@@            Coverage Diff            @@
##            master      #906   +/-   ##
=========================================
  Coverage   100.00%   100.00%           
=========================================
  Files           26        26           
  Lines          942       944    +2     
  Branches       284       285    +1     
=========================================
+ Hits           942       944    +2     

Flag	Coverage Δ
node-10.14.2	100.00% <100.00%> (ø)
node-12	100.00% <100.00%> (ø)
node-14	100.00% <100.00%> (ø)
node-15	100.00% <100.00%> (ø)

Flags with carried forward coverage won't be shown. Click here to find out more.

Impacted Files	Coverage Δ
src/helpers.js	100.00% <100.00%> (ø)

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[eps1lon]

Looks good. Some minor suggestions.

[juanca]

I'm not really sure what went wrong with the validate script. It passes locally. And I do not see a re-run button.

Reading a bit into it, it might be an async failure. I think I've seen a PR about some timer shenanigans, it might be related.

Lemme know how I should proceed.

[MatanBobi]

I'm not really sure what went wrong with the validate script. It passes locally. And I do not see a re-run button.

Reading a bit into it, it might be an async failure. I think I've seen a PR about some timer shenanigans, it might be related.

Lemme know how I should proceed.

I've just re-ran the jobs but it looks like it's still failing for 10.14.2.
Did you try to reproduce it locally with node 10.14.2? I'm trying to figure out if this only fails in CI for that version or not.

[eps1lon]

Nice work, thanks!

[github-actions]

🎉 This PR is included in version 7.30.0 🎉

The release is available on:

• npm package (@latest dist-tag)
• GitHub release

Your semantic-release bot 📦🚀

[MatanBobi]

Nice work, thanks!

@eps1lon I see that it passed in CI, did you just re-run it?

[eps1lon]

@eps1lon I see that it passed in CI, did you just re-run it?

Yep, it's a flaky test. Seems like others have the same problem: #901 (comment).

[MatanBobi]

@eps1lon I see that it passed in CI, did you just re-run it?

Yep, it's a flaky test. Seems like others have the same problem: #901 (comment).

Cool, thanks for the update :)