Add toBeSymbol matcher

[overlookmotel]

What

Added .toBeSymbol matcher.

Why

Sometimes you want to test if something is a Symbol.

Notes

Implementation copied from .toBeFunction.

I would usually open an issue before submitting a PR, but as this is pretty simple stuff, I've not bothered with an issue. If I've missed anything, please let me know and I'll amend this PR accordingly.

Housekeeping

• Unit tests
• Documentation is up to date
• No additional lint warnings
• Typescript definitions are added/updated where relevant

[codecov-io]

Codecov Report

Merging #217 (5e9f9e9) into main (c4961cd) will not change coverage.
The diff coverage is 100.00%.

@@            Coverage Diff            @@
##              main      #217   +/-   ##
=========================================
  Coverage   100.00%   100.00%           
=========================================
  Files          121       123    +2     
  Lines          750       761   +11     
  Branches       110       111    +1     
=========================================
+ Hits           750       761   +11     

Impacted Files	Coverage Δ
src/matchers/index.js	100.00% <100.00%> (ø)
src/matchers/toBeSymbol/index.js	100.00% <100.00%> (ø)
src/matchers/toBeSymbol/predicate.js	100.00% <100.00%> (ø)

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[overlookmotel]

Hellooooo! Anyone have an interest in reviewing this and possibly merging it?

[SimenB]

thanks!

[overlookmotel]

Thanks for merging. I thought this repo was dead!