feat(wrangler): Add type generation support to wrangler dev

[NuroDev]

Fixes https://jira.cfdata.org/browse/DEVX-2342

wrangler dev --types

{
	"$schema": "node_modules/wrangler/config-schema.json",
	"name": "example",
	"main": "src/index.ts",
	"compatibility_date": "2025-12-12",
	"dev": {
		"generate_types": true
	}
}

---

• Tests
  • Tests included/updated
  • Tests not necessary because:
• Public documentation
  • Cloudflare docs PR(s): Add type generation support to wrangler dev cloudflare-docs#27088
  • Documentation not necessary because:
• Wrangler V3 Backport
  • Wrangler PR:
  • Not necessary because: New feature, not a patch fix

A picture of a cute animal (not mandatory, but encouraged)

[changeset-bot]

🦋 Changeset detected

Latest commit: 6a07dcb

The changes in this PR will be included in the next version bump.

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commit: 6a07dcb

[dario-piotrowicz]

Looks almost ready to me, I just think that there are a few bits off with tests maybe 🙂

[dario-piotrowicz]

Looks good to me 😄