fix: compile should generate a TS file

[vonovak]

Description

Currently, running lingui compile --typescript produces a .ts (which contains javascript code) file along with .d.ts file with typings.

However, TypeScript, at least on my machine, ignores the typings file - which kinda makes sense given that the source file already has .ts extension.

So it looks like this:

AFAICT, we should not mix .ts with .d.ts. What this PR does is that it removes the generation of the d.ts file and instead puts the types into the generated .ts file. I believe this should not have any unintended side effects. If it does, we should keep the .d.ts file but change the .ts file extension.

Additionally, I made some docs changes to "promote" the --typescript flag more. I think most users are not aware of it, yet it's nice to have.

Types of changes

• Bugfix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to not work as expected)
• Documentation update
• Examples update

Fixes # (issue)

Checklist

• I have read the CONTRIBUTING and CODE_OF_CONDUCT docs
• I have added tests that prove my fix is effective or that my feature works
• I have added the necessary documentation (if appropriate)

[vercel]

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Name	Status	Preview	Comments	Updated (UTC)
js-lingui	✅ Ready (Inspect)	Visit Preview	💬 Add feedback	Feb 20, 2024 2:17pm

[github-actions]

size-limit report 📦

Path	Size
./packages/core/dist/index.mjs	2.86 KB (0%)
./packages/detect-locale/dist/index.mjs	723 B (0%)
./packages/react/dist/index.mjs	1.67 KB (0%)
./packages/remote-loader/dist/index.mjs	7.26 KB (0%)

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Comparison is base (685730f) 76.39% compared to head (2c80858) 76.66%.
Report is 2 commits behind head on main.

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #1851      +/-   ##
==========================================
+ Coverage   76.39%   76.66%   +0.26%     
==========================================
  Files          81       81              
  Lines        2072     2083      +11     
  Branches      529      532       +3     
==========================================
+ Hits         1583     1597      +14     
+ Misses        377      375       -2     
+ Partials      112      111       -1     

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[andrii-bodnar]

@vonovak thank you!