fix(helper/adapter): correct env type

[yusukebe]

Fixes honojs/website#577

The author should do the following, if applicable

• Add tests
• Run tests
• bun run format:fix && bun run lint:fix to format the code
• Add TSDoc/JSDoc to document the code

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 90.78%. Comparing base (093d3fd) to head (a0b57db).
Report is 2 commits behind head on main.

Additional details and impacted files

@@           Coverage Diff           @@
##             main    #3885   +/-   ##
=======================================
  Coverage   90.78%   90.78%           
=======================================
  Files         162      162           
  Lines       10263    10263           
  Branches     2908     2939   +31     
=======================================
  Hits         9317     9317           
  Misses        945      945           
  Partials        1        1           

☔ View full report in Codecov by Sentry.
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[yusukebe]

Hey @EdamAme-x Please review this!

[EdamAme-x]

okay, I am looking into this.

[EdamAme-x]

Sorry for missclick.

@yusukebe
Can you check this?
#3887

[github-actions]

Bundle size check

	main (65edaf2)	#3885 (12c8a0c)	+/-
Bundle Size (B)	18,757B	18,757B	0B
Bundle Size (KB)	18.32K	18.32K	0K

Compiler Diagnostics

	main (65edaf2)	#3885 (12c8a0c)	+/-
Files	257	257	0
Lines	115,048	115,048	0
Identifiers	112,928	112,928	0
Symbols	301,429	301,429	0
Types	213,638	213,638	0
Instantiations	3,090,073	3,090,073	0
Memory used	444,729K	451,625K	6,896K
I/O read	0.02s	0.02s	0s
I/O write	0s	0s	0s
Parse time	0.68s	0.67s	-0.01s
Bind time	0.31s	0.3s	-0.01s
Check time	5.81s	5.77s	-0.04s
Emit time	0s	0s	0s
Total time	6.8s	6.75s	-0.05s

---

Reported by octocov

[yusukebe]

@EdamAme-x

Thank you for the review and the PR! But I noticed there is a condition we have not checked. I've added a test and fixed the type definition. a0b57db

So, your PR will be unnecessary, but I think this PR is okay. Can you review this again?

[EdamAme-x]

LGTM

[yusukebe]

@EdamAme-x Thank you so much!