Replacing tsx with unrun (#3054)

Includes:
- #3051 
- #3053 
- ~~overriding vite to its v8~~
- vitest addressed it in #3256 

<!-- This is an auto-generated comment: release notes by coderabbit.ai
-->
## Summary by CodeRabbit

* **Chores**
* Switched project tooling from tsx to unrun across scripts and dev
dependencies; updated workspace configuration and dependency overrides.
No runtime behavior changes for end users.
* **Tests**
* Updated test runtimes to use the new runner and adjusted a minor test
expectation formatting string; no behavioral impact on test outcomes.
<!-- end of auto-generated comment: release notes by coderabbit.ai -->

Author: RobinTail

.github/workflows/headers.yml

@@ -31,7 +31,7 @@ jobs:
         run: pnpm install
 
       - name: Check for new headers on IANA.ORG
-        run: pnpm tsx tools/headers.ts
+        run: pnpm unrun tools/headers.ts
 
       - name: Check for changes
         id: git-state

compat-test/quick-start.spec.ts

@@ -15,7 +15,7 @@ describe("ESM Test", async () => {
   const listener = (chunk: Buffer) => {
     out += chunk.toString();
   };
-  const quickStart = spawn("tsx", ["quick-start.ts"]);
+  const quickStart = spawn("unrun", ["quick-start.ts"]);
   quickStart.stdout.on("data", listener);
   quickStart.stderr.on("data", listener);
   await vi.waitFor(() => assert(out.includes(`Listening`)), { timeout: 1e4 });

dts-plugin/package.json

@@ -11,7 +11,7 @@
     "build": "tsc"
   },
   "devDependencies": {
-    "rolldown": "^1.0.0-rc.7",
+    "rolldown": "^1.0.0-rc.9",
     "typescript": "catalog:dev"
   }
 }

esm-test/quick-start.spec.ts

@@ -6,7 +6,7 @@ describe("ESM Test", async () => {
   const listener = (chunk: Buffer) => {
     out += chunk.toString();
   };
-  const quickStart = spawn("tsx", ["quick-start.ts"]);
+  const quickStart = spawn("unrun", ["quick-start.ts"]);
   quickStart.stdout.on("data", listener);
   quickStart.stderr.on("data", listener);
   const port = givePort("esm");

example/index.spec.ts

@@ -13,7 +13,7 @@ describe("Example", async () => {
     out += chunk.toString();
   };
   const matchOut = (regExp: RegExp) => regExp.test(out);
-  const example = spawn("tsx", ["index.ts"]);
+  const example = spawn("unrun", ["index.ts"]);
   example.stdout.on("data", listener);
   const port = givePort("example");
   await vi.waitFor(() => assert(out.includes(`Listening`)), { timeout: 1e4 });

example/package.json

@@ -4,10 +4,10 @@
   "version": "0.0.0",
   "type": "module",
   "scripts": {
-    "start": "tsx index.ts",
+    "start": "unrun index.ts",
     "build": "pnpm build:docs && pnpm build:client",
-    "build:docs": "tsx generate-documentation.ts",
-    "build:client": "tsx generate-client.ts",
+    "build:docs": "unrun generate-documentation.ts",
+    "build:client": "unrun generate-client.ts",
     "pretest": "tsc",
     "test": "vitest run index.spec.ts"
   },

package.json

@@ -3,9 +3,9 @@
   "type": "module",
   "scripts": {
     "start": "pnpm -F example start",
-    "prebuild": "tsx tools/contributors.ts && tsx tools/license.ts",
+    "prebuild": "unrun tools/contributors.ts && unrun tools/license.ts",
     "build": "pnpm -r build",
-    "pretest": "tsx tools/make-tests.ts",
+    "pretest": "unrun tools/make-tests.ts",
     "test": "pnpm -r test",
     "bench": "pnpm -F express-zod-api bench",
     "lint": "eslint && prettier *.md **/*.md --check",
@@ -24,9 +24,9 @@
     "eslint-plugin-prettier": "^5.5.4",
     "husky": "^9.1.7",
     "prettier": "3.8.1",
-    "tsdown": "^0.21.0",
-    "tsx": "^4.21.0",
+    "tsdown": "^0.21.2",
     "typescript-eslint": "catalog:dev",
+    "unrun": "^0.2.32",
     "vitest": "^4.0.16"
   },
   "packageManager": "pnpm@10.32.1+sha512.a706938f0e89ac1456b6563eab4edf1d1faf3368d1191fc5c59790e96dc918e4456ab2e67d613de1043d2e8c81f87303e6b40d4ffeca9df15ef1ad567348f2be"