fix(context): add props to ExecutionContext

[yusukebe]

Fixes #4022

This seems to be a new feat, but it is slight and just for support of Wrangler 4.x, so I labeled it a fix.

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

[github-actions]

Bundle size check

	main (0bb821a)	#4030 (0396a71)	+/-
Bundle Size (B)	18,976B	18,976B	0B
Bundle Size (KB)	18.53K	18.53K	0K

Compiler Diagnostics

	main (0bb821a)	#4030 (0396a71)	+/-
Files	261	261	0
Lines	116,441	116,446	5
Identifiers	114,439	114,440	1
Symbols	303,843	303,844	1
Types	214,833	214,833	0
Instantiations	3,091,594	3,091,594	0
Memory used	448,342K	444,446K	-3,896K
I/O read	0.03s	0.03s	0s
I/O write	0s	0s	0s
Parse time	0.66s	0.66s	0s
Bind time	0.26s	0.28s	0.02s
Check time	5.88s	5.51s	-0.37s
Emit time	0s	0s	0s
Total time	6.8s	6.45s	-0.35s

---

Reported by octocov

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 91.28%. Comparing base (0bb821a) to head (b6002cf).

Additional details and impacted files

@@           Coverage Diff           @@
##             main    #4030   +/-   ##
=======================================
  Coverage   91.28%   91.28%           
=======================================
  Files         168      168           
  Lines       10768    10769    +1     
  Branches     3070     3020   -50     
=======================================
+ Hits         9830     9831    +1     
  Misses        937      937           
  Partials        1        1           

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[yusukebe]

This may introduce a breaking change for ExecutionContext, so I have made this PR a draft now.

[hmnd]

@yusukebe Thanks for working on this! I'm also seeing a missing exports prop:

Unhelpfully, its type in @cloudflare/workers-types is any...

Update: Just noticed I was importing from /experimental, so exports is not yet in production.