replace ts-node with tsx to fix tests

.mocharc.jsonc

@@ -0,0 +1,10 @@
+// See also: https://github.com/mochajs/mocha/blob/b720ec1b3ca630a90f80311da391b2a0cdfead4e/example/config/.mocharc.js
+{
+  "$schema": "https://json.schemastore.org/mocharc",
+  "color": false,
+  "extensions": [
+    "ts"
+  ],
+  "import": "tsx",
+  "spec": ["test/*.ts"]
+}

package.json

@@ -11,9 +11,8 @@
     "coverage:report": "nyc report --reporter=text-lcov > coverage.lcov",
     "watch": "tsc -w",
     "prepare": "npm run build",
-    "mocha": "cross-env TS_NODE_FILES=true mocha",
     "lint": "eslint --ext .ts .",
-    "spec": "tsc && npm run mocha -- test/*.ts",
+    "spec": "tsc && mocha",
     "test": "npm run prewarm-headers && npm run lint && npm run spec",
     "prewarm-headers": "node-gyp install --ensure"
   },
@@ -78,21 +77,14 @@
     "@typescript-eslint/parser": "^6.21.0",
     "chai": "^4.2.0",
     "chai-as-promised": "^7.1.1",
-    "cross-env": "^7.0.2",
     "electron": "^22.0.0",
     "eslint": "^7.7.0",
     "eslint-plugin-mocha": "^9.0.0",
-    "mocha": "^10.8.2",
+    "mocha": "^11.1.0",
     "nyc": "^15.1.0",
-    "ts-node": "^10.9.2",
+    "tsx": "^4.19.3",
     "typescript": "~5.4.5"
   },
-  "mocha": {
-    "extensions": [
-      "ts"
-    ],
-    "require": "ts-node/register"
-  },
   "nyc": {
     "extends": "@istanbuljs/nyc-config-typescript"
   }

test/helpers/module-setup.ts

@@ -24,6 +24,13 @@ export function resetMSVSVersion(): void {
 const testModuleTmpPath = fs.mkdtempSync(path.resolve(os.tmpdir(), 'e-r-test-module-'));
 
 export async function resetTestModule(testModulePath: string, installModules = true, fixtureName = 'native-app1'): Promise<void> {
+  /**
+   * Remove the `--import` CLI flag added by Mocha so Node doesn't try to load
+   * `tsx` when we spawn the `node-gyp` worker, which would fail because the
+   * test fixtures don't include that dependency.
+   */
+  process.execArgv = process.execArgv.filter(item => item !== '--import=tsx');
+
   const oneTimeModulePath = path.resolve(testModuleTmpPath, `${crypto.createHash('SHA1').update(testModulePath).digest('hex')}-${fixtureName}-${installModules}`);
   if (!fs.existsSync(oneTimeModulePath)) {
     d(`creating test module '%s' in %s`, fixtureName, oneTimeModulePath);