[chore] Replace jest with vitest for test running in node-build-scripts (#7981)

Author: ggdouglas

packages/node-build-scripts/jest.config.js

@@ -7,7 +7,7 @@
         "import": "./index.mjs"
     },
     "scripts": {
-        "test": "NODE_OPTIONS=--experimental-vm-modules jest"
+        "test": "vitest run"
     },
     "bin": {
         "assert-package-layout": "./assert-package-layout.mjs",
@@ -47,13 +47,10 @@
         "yargs": "^17.7.2"
     },
     "devDependencies": {
-        "@jest/globals": "^29.7.0",
-        "@swc/core": "^1.3.105",
-        "@swc/jest": "^0.2.31",
         "@types/fs-extra": "~11.0.4",
         "@types/svgo": "~1.3.6",
         "@types/yargs": "~17.0.32",
-        "jest": "^29.7.0"
+        "vitest": "catalog:"
     },
     "engines": {
         "node": ">=20.11"

packages/node-build-scripts/package.json

@@ -2,7 +2,7 @@
  * Copyright 2023 Palantir Technologies, Inc. All rights reserved.
  */
 
-import { describe, expect, test } from "@jest/globals";
+import { describe, expect, test } from "vitest";
 import { readFileSync } from "node:fs";
 import { join, resolve, dirname } from "node:path";
 import { fileURLToPath } from "node:url";

packages/node-build-scripts/src/__tests__/cssVariables.test.ts

@@ -0,0 +1,13 @@
+/* !
+ * (c) Copyright 2026 Palantir Technologies Inc. All rights reserved.
+ */
+
+import { defineConfig } from "vitest/config";
+
+export default defineConfig({
+    test: {
+        name: "node-build-scripts",
+        environment: "node",
+        include: ["src/**/*.test.ts"],
+    },
+});