feat!: Dropped compatibility for Node 20.x.

Author: ShogunPanda

.github/workflows/ci.yml

@@ -7,7 +7,7 @@ jobs:
       fail-fast: false
       matrix:
         os: [ubuntu-latest, windows-latest]
-        node-version: [20.18.0, 22, 23]
+        node-version: [22, 23]
     runs-on: ${{ matrix.os }}
     steps:
       - name: Checkout
@@ -28,7 +28,6 @@ jobs:
       - name: Install dependencies
         run: pnpm install --shamefully-hoist
       - name: Run Tests
-        if: matrix.os != 'windows-latest' && matrix.node-version != '20.18.0'
         run: pnpm run ci
       - name: Upload coverage to Codecov
         uses: codecov/codecov-action@v3

README.md

@@ -29,9 +29,7 @@ If you need to configure the script at runtime, use environment variables and op
 
 ### TypeScript
 
-cronometro can run on TypeScript files. Type deletion happens on the fly with no additional configuration required.
-
-Use the `TS_NODE_PROJECT` environment variable to provide a TypeScript configuration.
+cronometro can run on TypeScript files via [Node.js native types stripping](https://nodejs.org/dist/latest-v22.x/docs/api/typescript.html#type-stripping).
 
 ### API use
 

package.json

@@ -39,7 +39,6 @@
     "postpublish": "git push origin && git push origin -f --tags"
   },
   "dependencies": {
-    "@swc-node/register": "^1.10.9",
     "acquerello": "^3.0.1",
     "hdr-histogram-js": "^3.0.0",
     "table": "^6.9.0"
@@ -56,6 +55,6 @@
     "typescript": "^5.7.2"
   },
   "engines": {
-    "node": ">= 20.18.0"
+    "node": ">= 22.6.0"
   }
 }

src/index.ts

@@ -50,7 +50,20 @@ function run(context: Context): void {
     errorThreshold: context.errorThreshold
   }
 
-  const worker = new Worker(runnerPath, { workerData })
+  /* c8 ignore next 5 */
+  let nodeOptions = process.env.NODE_OPTIONS ?? ''
+  const nodeMajor = Number(process.versions.node.split('.')[0])
+  if (nodeMajor < 23) {
+    nodeOptions += ' --experimental-strip-types '
+  }
+
+  const worker = new Worker(runnerPath, {
+    workerData,
+    env: {
+      ...process.env,
+      NODE_OPTIONS: nodeOptions
+    }
+  })
 
   if (context.onTestStart) {
     context.onTestStart(name, workerData, worker)

src/runner.ts

@@ -7,10 +7,6 @@ if (isMainThread) {
   throw new Error('Do not run this file as main script.')
 }
 
-if (workerData.path.endsWith('.ts')) {
-  await import('@swc-node/register/esm-register')
-}
-
 // Require the script to set tests
 try {
   const module = await import(workerData.path)

test/config/c8-local.json

@@ -1,6 +1,3 @@
 {
-  "reporter": ["text", "html"],
-  "all": true,
-  "include": ["src/**/*.ts"],
-  "exclude": ["**/node_modules/**", "test/**/*.ts"]
+  "reporter": ["text", "html"]
 }