build: migrate from tsc to tsdown

.github/workflows/codspeed.yaml

@@ -24,7 +24,7 @@ jobs:
 
       - run: pnpm i
 
-      - uses: CodSpeedHQ/action@v4
+      - uses: CodSpeedHQ/action@v5
         with:
           mode: simulation
           run: pnpm run bench

apps/content/blume.config.ts

@@ -5,9 +5,9 @@ import { posthog } from 'blume/analytics'
 import { cloudflare } from 'blume/deploy'
 import { filesystem } from 'blume/sources'
 
-import { serverSourcemapsPlugin } from './dev/server-sourcemaps.ts'
-import { searchCodeIndexPlugin } from './search/code-index.ts'
-import { sponsorAdsInjectPlugin } from './sponsors/inject.ts'
+import { serverSourcemapsPlugin } from './dev/server-sourcemaps'
+import { searchCodeIndexPlugin } from './search/code-index'
+import { sponsorAdsInjectPlugin } from './sponsors/inject'
 
 export default defineConfig({
   title: 'oRPC',

apps/content/sponsors/ads.ts

@@ -10,7 +10,7 @@
  * the sponsor wall's data has no business in the browser bundle — slots.ts
  * carries only the handful of sponsors that bought a position.
  */
-import slots from './slots.ts'
+import slots from './slots'
 
 export interface AdSponsor {
   name: string

apps/content/sponsors/client.ts

@@ -1,5 +1,5 @@
-import type { AdSponsor } from './ads.ts'
-import { relAttribute, soldSponsors, tintStyle } from './ads.ts'
+import type { AdSponsor } from './ads'
+import { relAttribute, soldSponsors, tintStyle } from './ads'
 
 // Only the inline slots rotate. The grid is static and carries no
 // [data-sponsor-slot], so nothing here touches it.

apps/content/sponsors/data.ts

@@ -1,6 +1,6 @@
 // The GitHub Sponsors wall behind the landing page and the /sponsors table.
 // Paid ad slots are a separate concern and live in ads.ts.
-import sponsors from './sponsors.ts'
+import sponsors from './sponsors'
 
 export const GITHUB_SPONSORS_URL = 'https://github.com/sponsors/dinwwwh'
 export const OPEN_COLLECTIVE_URL = 'https://opencollective.com/middleapi'

apps/content/tsconfig.json

@@ -2,7 +2,6 @@
   "extends": "../../tsconfig.json",
   "compilerOptions": {
     "lib": ["ES2023", "DOM", "DOM.Iterable"],
-    "module": "preserve",
     "types": ["node"]
   },
   "include": [

benches/openapi-link-handler.bench.ts

@@ -13,7 +13,7 @@ import {
   EVENTS_10KB,
   handlers,
   PAYLOAD_10KB,
-} from './__shared__/payloads.ts'
+} from './__shared__/payloads'
 
 const serializer = new OpenAPISerializer({ handlers })
 

benches/openapi-serializer.bench.ts

@@ -7,7 +7,7 @@ import {
   PAYLOAD_5MB,
   PAYLOAD_5MB_WITH_FILES,
   PAYLOAD_100KB,
-} from './__shared__/payloads.ts'
+} from './__shared__/payloads'
 
 const serializer = new OpenAPISerializer({ handlers })
 

benches/rpc-link-handler.bench.ts

@@ -11,7 +11,7 @@ import {
   EVENTS_10KB,
   handlers,
   PAYLOAD_10KB,
-} from './__shared__/payloads.ts'
+} from './__shared__/payloads'
 
 const serializer = new RPCSerializer({ handlers })
 

benches/rpc-serializer.bench.ts

@@ -7,7 +7,7 @@ import {
   PAYLOAD_5MB,
   PAYLOAD_5MB_WITH_FILES,
   PAYLOAD_100KB,
-} from './__shared__/payloads.ts'
+} from './__shared__/payloads'
 
 const serializer = new RPCSerializer({ handlers })
 

benches/static-file-handler.bench.ts

@@ -8,7 +8,7 @@ import { RPCHandlerCodec, StandardHandler } from '@orpc/server/standard'
 import type { StandardLazyRequest } from '@standard-server/core'
 import { bench } from 'vitest'
 
-import { drainBody } from './__shared__/payloads.ts'
+import { drainBody } from './__shared__/payloads'
 
 const rootDir = mkdtempSync(path.join(tmpdir(), 'orpc-static-file-bench-'))
 

package.json

@@ -59,14 +59,15 @@
     "crossws": "^0.4.17",
     "github-slugger": "^2.0.0",
     "jsdom": "^29.1.1",
-    "oxfmt": "^0.76.0",
-    "oxlint": "^1.91.0",
-    "oxlint-tsgolint": "^7.0.2005",
+    "oxfmt": "^0.77.0",
+    "oxlint": "^1.92.0",
+    "oxlint-tsgolint": "^7.0.2006",
     "pino": "^10.4.0",
     "pkg-pr-new": "^0.0.93",
     "react": "^19.3.1",
     "sherif": "^1.13.0",
     "supertest": "^7.3.1",
+    "tsdown": "^0.23.7",
     "typescript": "^7.0.2",
     "typescript-6": "npm:typescript@^6.0.3",
     "valibot": "^1.5.0",

packages/ai-sdk/package.json

@@ -43,7 +43,7 @@
     }
   },
   "scripts": {
-    "prepack": "tsc"
+    "prepack": "tsdown"
   },
   "dependencies": {
     "@orpc/client": "workspace:*",

packages/ai-sdk/src/index.test.ts

@@ -1,3 +1,3 @@
 it('exports createToolFactory', async () => {
-  expect(Object.keys(await import('./index.ts'))).toContain('createToolFactory')
+  expect(Object.keys(await import('./index'))).toContain('createToolFactory')
 })

packages/ai-sdk/src/index.ts

@@ -1,2 +1,2 @@
-export * from './tool.ts'
-export * from './tool-meta.ts'
+export * from './tool'
+export * from './tool-meta'

packages/ai-sdk/src/tool-meta.test-d.ts

@@ -2,7 +2,7 @@ import { asyncIteratorObject, oc } from '@orpc/contract'
 import { os } from '@orpc/server'
 import { z } from 'zod'
 
-import { aiSdkTool } from './tool-meta.ts'
+import { aiSdkTool } from './tool-meta'
 
 describe('aiSdkTool meta', () => {
   it('infer input and output types from the contract', () => {

packages/ai-sdk/src/tool-meta.test.ts

@@ -1,6 +1,6 @@
 import { oc } from '@orpc/contract'
 
-import { aiSdkTool, getAiSdkToolMeta } from './tool-meta.ts'
+import { aiSdkTool, getAiSdkToolMeta } from './tool-meta'
 
 describe('aiSdkTool meta', () => {
   it('returns a plugin with name ~ai-sdk/tool', () => {

packages/ai-sdk/src/tool-meta.ts

@@ -9,7 +9,7 @@ import type {
 import type { Lazy } from '@orpc/server'
 import type { JSONValue, Tool } from 'ai'
 
-import type { ToolOutput } from './tool.ts'
+import type { ToolOutput } from './tool'
 
 /**
  * The [function tool](https://ai-sdk.dev/docs/foundations/tools) member of the AI SDK `Tool` union,

packages/ai-sdk/src/tool.test-d.ts

@@ -4,7 +4,7 @@ import type { InferToolInput, InferToolOutput } from 'ai'
 import { generateText } from 'ai'
 import { z } from 'zod'
 
-import { createToolFactory, implementToolFactory } from './tool.ts'
+import { createToolFactory, implementToolFactory } from './tool'
 
 describe('implementToolFactory', () => {
   it('can use as a tool', () => {

packages/ai-sdk/src/tool.test.ts

@@ -5,8 +5,8 @@ import { generateText } from 'ai'
 import { MockLanguageModelV4 } from 'ai/test'
 import * as z from 'zod'
 
-import { aiSdkTool } from './tool-meta.ts'
-import { createToolFactory, implementToolFactory } from './tool.ts'
+import { createToolFactory, implementToolFactory } from './tool'
+import { aiSdkTool } from './tool-meta'
 
 function toolCallModel(toolName: string, args: unknown) {
   return new MockLanguageModelV4({

packages/ai-sdk/src/tool.ts

@@ -26,8 +26,8 @@ import {
 import type { FlexibleSchema, JSONValue, Tool, ToolResultPart } from 'ai'
 import { tool } from 'ai'
 
-import type { FunctionTool } from './tool-meta.ts'
-import { getAiSdkToolMeta } from './tool-meta.ts'
+import type { FunctionTool } from './tool-meta'
+import { getAiSdkToolMeta } from './tool-meta'
 
 const ANY_SCHEMA: FlexibleSchema = {
   '~standard': {

packages/arktype/package.json

@@ -42,7 +42,7 @@
     }
   },
   "scripts": {
-    "prepack": "tsc"
+    "prepack": "tsdown"
   },
   "dependencies": {
     "@orpc/json-schema": "workspace:*"

packages/arktype/src/converter.test.ts

@@ -1,7 +1,7 @@
 import { type } from 'arktype'
 import * as z from 'zod'
 
-import { ArkTypeToJsonSchemaConverter } from './converter.ts'
+import { ArkTypeToJsonSchemaConverter } from './converter'
 
 describe('arkTypeToJsonSchemaConverter', () => {
   const converter = new ArkTypeToJsonSchemaConverter()

packages/arktype/src/index.test.ts

@@ -1,5 +1,5 @@
 it('exports ArkTypeToJsonSchemaConverter', async () => {
-  await expect(import('./index.ts')).resolves.toMatchObject({
+  await expect(import('./index')).resolves.toMatchObject({
     ArkTypeToJsonSchemaConverter: expect.any(Function),
   })
 })

packages/arktype/src/index.ts

@@ -1,3 +1,3 @@
-export * from './converter.ts'
+export * from './converter'
 
 export type { JsonSchema } from '@orpc/json-schema'

packages/bun/package.json

@@ -42,7 +42,7 @@
     }
   },
   "scripts": {
-    "prepack": "tsc -p tsconfig.build.json",
+    "prepack": "tsdown",
     "test": "bun --env-file=../../.env test",
     "test:coverage": "bun --env-file=../../.env test --coverage"
   },

packages/bun/src/index.test.ts

@@ -1,7 +1,7 @@
 import { expect, it } from 'bun:test'
 
 it('exports BunRedisRateLimiter, BunRedisPublisher, experimental_BunRedisLocker', async () => {
-  await expect(import('./index.ts')).resolves.toMatchObject({
+  await expect(import('./index')).resolves.toMatchObject({
     BunRedisRateLimiter: expect.any(Function),
     BunRedisPublisher: expect.any(Function),
     experimental_BunRedisLocker: expect.any(Function),

packages/bun/src/index.ts

@@ -1,3 +1,3 @@
-export * from './redis-lock.ts'
-export * from './redis-publisher.ts'
-export * from './redis-ratelimit.ts'
+export * from './redis-lock'
+export * from './redis-publisher'
+export * from './redis-ratelimit'

packages/bun/src/redis-lock.test.ts

@@ -5,7 +5,7 @@ import { LockTimeoutError } from '@orpc/experimental-lock'
 import { promiseWithResolvers, sleep } from '@orpc/shared'
 import { RedisClient } from 'bun'
 
-import { experimental_BunRedisLocker as BunRedisLocker } from './redis-lock.ts'
+import { experimental_BunRedisLocker as BunRedisLocker } from './redis-lock'
 
 const REDIS_URL = Bun.env.REDIS_URL
 

packages/bun/src/redis-publisher.test.ts

@@ -5,9 +5,9 @@ import { getOrBind, promiseWithResolvers, sleep } from '@orpc/shared'
 import { getEventMeta, withEventMeta } from '@standard-server/core'
 import { RedisClient } from 'bun'
 
-import { waitFor } from '../tests/__shared__/utils.ts'
-import type { BunRedisPublisherOptions } from './redis-publisher.ts'
-import { BunRedisPublisher } from './redis-publisher.ts'
+import { waitFor } from '../tests/__shared__/utils'
+import type { BunRedisPublisherOptions } from './redis-publisher'
+import { BunRedisPublisher } from './redis-publisher'
 
 const REDIS_URL = process.env.REDIS_URL
 

packages/bun/src/redis-ratelimit.test.ts

@@ -3,7 +3,7 @@ import { afterAll, beforeAll, describe, expect, it } from 'bun:test'
 import { sleep } from '@orpc/shared'
 import { RedisClient } from 'bun'
 
-import { BunRedisRateLimiter } from './redis-ratelimit.ts'
+import { BunRedisRateLimiter } from './redis-ratelimit'
 
 const REDIS_URL = Bun.env.REDIS_URL
 

packages/bun/tests/lock-redis-adapters-compatibility.test.ts

@@ -6,7 +6,7 @@ import { promiseWithResolvers } from '@orpc/shared'
 import { RedisClient } from 'bun'
 import { createClient } from 'redis'
 
-import { experimental_BunRedisLocker as BunRedisLocker } from '../src/index.ts'
+import { experimental_BunRedisLocker as BunRedisLocker } from '../src/index'
 
 const REDIS_URL = Bun.env.REDIS_URL
 

packages/bun/tests/publisher-redis-adapters-compatibility.test.ts

@@ -6,8 +6,8 @@ import { getEventMeta, withEventMeta } from '@standard-server/core'
 import { RedisClient } from 'bun'
 import { createClient } from 'redis'
 
-import { BunRedisPublisher } from '../src/redis-publisher.ts'
-import { waitFor } from './__shared__/utils.ts'
+import { BunRedisPublisher } from '../src/redis-publisher'
+import { waitFor } from './__shared__/utils'
 
 const REDIS_URL = process.env.REDIS_URL
 

packages/bun/tests/ratelimit-redis-adapters-compatibility.test.ts

@@ -5,7 +5,7 @@ import { RedisRateLimiter } from '@orpc/ratelimit/redis'
 import { RedisClient } from 'bun'
 import { createClient } from 'redis'
 
-import { BunRedisRateLimiter } from '../src/index.ts'
+import { BunRedisRateLimiter } from '../src/index'
 
 const REDIS_URL = Bun.env.REDIS_URL
 

packages/bun/tests/rpc/__shared__/client-server.bun-fetch.ts

@@ -4,8 +4,8 @@ import { createORPCClient } from '@orpc/client'
 import { RPCLink } from '@orpc/client/fetch'
 import { RPCHandler } from '@orpc/server/fetch'
 
-import type { CreateClientServerTest } from './client-server.ts'
-import { defaultSerializer } from './client-server.ts'
+import type { CreateClientServerTest } from './client-server'
+import { defaultSerializer } from './client-server'
 
 export const createBunFetchClientServerTest: CreateClientServerTest = (
   router,

packages/bun/tests/rpc/__shared__/client-server.bun-websocket.ts

@@ -4,8 +4,8 @@ import { createORPCClient } from '@orpc/client'
 import { RPCLink } from '@orpc/client/websocket'
 import { RPCHandler } from '@orpc/server/websocket'
 
-import type { CreateClientServerTest } from './client-server.ts'
-import { defaultSerializer } from './client-server.ts'
+import type { CreateClientServerTest } from './client-server'
+import { defaultSerializer } from './client-server'
 
 export const createBunWebSocketClientServerTest: CreateClientServerTest = (
   router,

packages/bun/tests/rpc/__shared__/client-server.compression-bun-fetch.ts

@@ -9,8 +9,8 @@ import {
   ResponseCompressionHandlerPlugin,
 } from '@orpc/server/plugins'
 
-import type { CreateClientServerTest } from './client-server.ts'
-import { defaultSerializer } from './client-server.ts'
+import type { CreateClientServerTest } from './client-server'
+import { defaultSerializer } from './client-server'
 
 export const createCompressionBunFetchClientServerTest: CreateClientServerTest = (
   router,

packages/bun/tests/rpc/__shared__/client-server.compression-bun-websocket.ts

@@ -9,8 +9,8 @@ import {
 } from '@orpc/server/plugins'
 import { RPCHandler } from '@orpc/server/websocket'
 
-import type { CreateClientServerTest } from './client-server.ts'
-import { defaultSerializer } from './client-server.ts'
+import type { CreateClientServerTest } from './client-server'
+import { defaultSerializer } from './client-server'
 
 export const createCompressionBunWebSocketClientServerTest: CreateClientServerTest = (
   router,

packages/bun/tests/rpc/cancel-and-abort.test.ts

@@ -4,10 +4,10 @@ import { AsyncIteratorClass, os } from '@orpc/server'
 import { sleep } from 'bun'
 import { z } from 'zod'
 
-import { createBunFetchClientServerTest } from './__shared__/client-server.bun-fetch.ts'
-import { createBunWebSocketClientServerTest } from './__shared__/client-server.bun-websocket.ts'
-import { createCompressionBunFetchClientServerTest } from './__shared__/client-server.compression-bun-fetch.ts'
-import { createCompressionBunWebSocketClientServerTest } from './__shared__/client-server.compression-bun-websocket.ts'
+import { createBunFetchClientServerTest } from './__shared__/client-server.bun-fetch'
+import { createBunWebSocketClientServerTest } from './__shared__/client-server.bun-websocket'
+import { createCompressionBunFetchClientServerTest } from './__shared__/client-server.compression-bun-fetch'
+import { createCompressionBunWebSocketClientServerTest } from './__shared__/client-server.compression-bun-websocket'
 
 describe.each([
   ['bun-fetch', createBunFetchClientServerTest],

packages/bun/tests/rpc/data-transfer.test.ts

@@ -4,12 +4,12 @@ import { os } from '@orpc/server'
 import { promiseWithResolvers } from '@orpc/shared'
 import { z } from 'zod'
 
-import { builtInRPCSupportDataTypes } from './__shared__/built-in-support-data-types.ts'
-import { createBunFetchClientServerTest } from './__shared__/client-server.bun-fetch.ts'
-import { createBunWebSocketClientServerTest } from './__shared__/client-server.bun-websocket.ts'
-import { createCompressionBunFetchClientServerTest } from './__shared__/client-server.compression-bun-fetch.ts'
-import { createCompressionBunWebSocketClientServerTest } from './__shared__/client-server.compression-bun-websocket.ts'
-import { Person } from './__shared__/client-server.ts'
+import { builtInRPCSupportDataTypes } from './__shared__/built-in-support-data-types'
+import { Person } from './__shared__/client-server'
+import { createBunFetchClientServerTest } from './__shared__/client-server.bun-fetch'
+import { createBunWebSocketClientServerTest } from './__shared__/client-server.bun-websocket'
+import { createCompressionBunFetchClientServerTest } from './__shared__/client-server.compression-bun-fetch'
+import { createCompressionBunWebSocketClientServerTest } from './__shared__/client-server.compression-bun-websocket'
 
 describe.each([
   ['bun-fetch', createBunFetchClientServerTest],