Use type stripping

package.json

@@ -20,7 +20,7 @@
 		"prepare": "husky",
 		"build": "tsc",
 		"prepublishOnly": "npm run build",
-		"test": "xo && tsc --noEmit && c8 node --import=tsx/esm --test"
+		"test": "xo && tsc --noEmit && c8 node --test"
 	},
 	"files": [
 		"distribution/main.js",
@@ -36,16 +36,15 @@
 		"typescript"
 	],
 	"devDependencies": {
-		"@commitlint/cli": "^20.0.0",
+		"@commitlint/cli": "^20.1.0",
 		"@commitlint/config-conventional": "^20.0.0",
-		"@sindresorhus/tsconfig": "^8.0.1",
-		"@types/node": "^24.5.2",
+		"@sindresorhus/tsconfig": "^8.1.0",
+		"@types/node": "^24.10.0",
 		"c8": "^10.1.3",
 		"husky": "^9.1.7",
-		"lint-staged": "^16.2.1",
-		"tsx": "^4.20.6",
-		"typescript": "^5.9.2",
-		"xo": "^1.2.2"
+		"lint-staged": "^16.2.6",
+		"typescript": "^5.9.3",
+		"xo": "^1.2.3"
 	},
 	"commitlint": {
 		"extends": [

sample/authorizer.ts

@@ -1,5 +1,5 @@
-import {middleware} from '../main.js';
-import type {Request} from './http.js';
+import {middleware} from '../main.ts';
+import type {Request} from './http.ts';
 
 export type Claim = {
 	email: string;

sample/case/create-task.ts

@@ -1,15 +1,15 @@
 import {
 	assign, parallel, passthrough, pipe,
-} from '../../main.js';
-import {createAuthorizer, withAuthorization} from '../authorizer.js';
-import {makeTaskRepository} from '../task/repository.js';
-import {makeTaskService} from '../task/service.js';
-import {makeUserRepository} from '../user/repository.js';
-import {makeUserService} from '../user/service.js';
-import {withValidation} from '../validator.js';
-import {makeWithUser, notifyUserLogin} from '../user/middleware.js';
-import {makeCreateTask, notifyTaskCreation} from '../task/middleware.js';
-import type {Request} from '../http.js';
+} from '../../main.ts';
+import {createAuthorizer, withAuthorization} from '../authorizer.ts';
+import {makeTaskRepository} from '../task/repository.ts';
+import {makeTaskService} from '../task/service.ts';
+import {makeUserRepository} from '../user/repository.ts';
+import {makeUserService} from '../user/service.ts';
+import {withValidation} from '../validator.ts';
+import {makeWithUser, notifyUserLogin} from '../user/middleware.ts';
+import {makeCreateTask, notifyTaskCreation} from '../task/middleware.ts';
+import type {Request} from '../http.ts';
 
 const authorizer = createAuthorizer({secret: 'youshallnotpass'});
 

sample/task/middleware.ts

@@ -1,8 +1,8 @@
-import {middleware} from '../../main.js';
-import type {Request} from '../http.js';
-import type {Logged} from '../user/middleware.js';
-import type {Task} from './schema.js';
-import type {TaskService} from './service.js';
+import {middleware} from '../../main.ts';
+import type {Request} from '../http.ts';
+import type {Logged} from '../user/middleware.ts';
+import type {Task} from './schema.ts';
+import type {TaskService} from './service.ts';
 
 type WithTask = {
 	task: Task;

sample/task/repository.ts

@@ -1,4 +1,4 @@
-import type {Task} from './schema.js';
+import type {Task} from './schema.ts';
 
 const tasks = new Map<string, Task>();
 

sample/task/service.ts

@@ -1,6 +1,6 @@
 import {randomUUID} from 'node:crypto';
-import type {TaskRepository} from './repository.js';
-import type {Task} from './schema.js';
+import type {TaskRepository} from './repository.ts';
+import type {Task} from './schema.ts';
 
 export type TaskService = {
 	create(description: string, userId: string): Promise<Task>;

sample/user/middleware.ts

@@ -1,7 +1,7 @@
-import {middleware} from '../../main.js';
-import type {Authorized} from '../authorizer.js';
-import type {User} from './schema.js';
-import type {UserService} from './service.js';
+import {middleware} from '../../main.ts';
+import type {Authorized} from '../authorizer.ts';
+import type {User} from './schema.ts';
+import type {UserService} from './service.ts';
 
 export type Logged = {
 	user: User;

sample/user/repository.ts

@@ -1,4 +1,4 @@
-import type {User} from './schema.js';
+import type {User} from './schema.ts';
 
 const users = new Map<string, User>();
 

sample/user/service.ts

@@ -1,6 +1,6 @@
 import {randomUUID} from 'node:crypto';
-import type {User} from './schema.js';
-import type {UserRepository} from './repository.js';
+import type {User} from './schema.ts';
+import type {UserRepository} from './repository.ts';
 
 export type UserService = {
 	create(name: string, email: string): Promise<User>;

test.ts

@@ -2,7 +2,7 @@ import test from 'node:test';
 import assert from 'node:assert/strict';
 import {
 	_, assign, middleware, parallel, passthrough, pipe,
-} from './main.js';
+} from './main.ts';
 
 const getUser = async () => ({name: 'John Smith'});
 const addAge = middleware(async () => ({age: 30}));

tsconfig.json

@@ -1,3 +1,6 @@
 {
-	"extends": "@sindresorhus/tsconfig"
+	"extends": "@sindresorhus/tsconfig",
+	"compilerOptions": {
+		"rewriteRelativeImportExtensions": true
+	}
 }