chore: import upstream snapshot with attribution

tests/utils/vitest-setup.js

@@ -0,0 +1,39 @@
+/**
+ * Vitest setup file for module aliasing and CI logging
+ * This allows require("logger") to work in unit tests
+ */
+
+const Module = require("node:module");
+const path = require("node:path");
+
+// Set test mode flag for application code to detect test environment
+process.env.mmTestMode = "true";
+
+// overrides native implementation (Nodejs >= v25) to avoid warnings in tests
+// "ExperimentalWarning: localStorage is not available because --localstorage-file was not provided."
+Object.defineProperty(globalThis, "localStorage", { value: undefined, writable: true });
+
+// Store the original require
+const originalRequire = Module.prototype.require;
+
+// Track if we've already applied log level
+let logLevelApplied = false;
+
+// Override require to handle our custom aliases
+Module.prototype.require = function (id) {
+	// Handle "logger" alias
+	if (id === "logger") {
+		const logger = originalRequire.call(this, path.resolve(__dirname, "../../js/logger.js"));
+
+		// Suppress debug/info logs in CI to keep output clean
+		if (!logLevelApplied && process.env.CI === "true") {
+			logger.setLogLevel("ERROR");
+			logLevelApplied = true;
+		}
+
+		return logger;
+	}
+
+	// Handle all other requires normally
+	return originalRequire.apply(this, arguments);
+};