add HttpApp.fromWebHandler for wrapping web handlers

[kitlangton]

Type

• Feature

Description

Adds HttpApp.fromWebHandler - the inverse of toWebHandler. This wraps a standard web handler (Request) => Promise<Response> so it can be used within an Effect HTTP application.

This completes the web interop API symmetry:

Direction	Request	Response	HttpApp
web → Effect	fromWeb ✅	fromWeb ✅	fromWebHandler ✅
Effect → web	toWeb ✅	toWeb ✅	toWebHandler ✅

Example Usage

import { HttpApp } from "@effect/platform"

// Wrap any web handler (e.g., BetterAuth, Hono)
const WebApp = HttpApp.fromWebHandler(async (request) => {
  return new Response("Hello from web handler!")
})

Tests

• Basic GET request
• POST with JSON body
• Request headers preservation
• Response status/headers preservation
• Round-trip with toWebHandler

[changeset-bot]

🦋 Changeset detected

Latest commit: 8290b17

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

This PR includes changesets to release 31 packages

Name	Type
@effect/platform	Patch
@effect/cli	Patch
@effect/cluster	Patch
@effect/experimental	Patch
@effect/opentelemetry	Patch
@effect/platform-browser	Patch
@effect/platform-bun	Patch
@effect/platform-node-shared	Patch
@effect/platform-node	Patch
@effect/rpc	Patch
@effect/sql-clickhouse	Patch
@effect/sql-d1	Patch
@effect/sql-drizzle	Patch
@effect/sql-libsql	Patch
@effect/sql-mssql	Patch
@effect/sql-mysql2	Patch
@effect/sql-pg	Patch
@effect/sql-sqlite-bun	Patch
@effect/sql-sqlite-node	Patch
@effect/sql	Patch
@effect/workflow	Patch
@effect/ai	Patch
@effect/ai-amazon-bedrock	Patch
@effect/ai-anthropic	Patch
@effect/ai-google	Patch
@effect/ai-openai	Patch
@effect/ai-openrouter	Patch
@effect/sql-sqlite-do	Patch
@effect/sql-sqlite-react-native	Patch
@effect/sql-sqlite-wasm	Patch
@effect/sql-kysely	Patch

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[tim-smart]

#5902