♻️ refactor: migrate to bun and refactor

src/config.test.ts

@@ -0,0 +1,45 @@
+import { describe, test, expect } from "bun:test";
+import { loadConfig } from "./config";
+
+describe("loadConfig", () => {
+    test("returns defaults when env vars are unset", () => {
+        const config = loadConfig({});
+        expect(config).toEqual({
+            host: "0.0.0.0",
+            port: 22,
+            maxLoop: 5,
+            loginDelay: 1500,
+            maxConnections: 10,
+            brightnessThreshold: 40,
+            logCredentials: false,
+        });
+    });
+
+    test("overrides defaults from env vars", () => {
+        const config = loadConfig({
+            HOST: "127.0.0.1",
+            PORT: "2222",
+            MAX_LOOP: "3",
+            LOGIN_DELAY: "500",
+            MAX_CONNECTIONS: "20",
+            BRIGHTNESS_THRESHOLD: "60",
+            LOG_CREDENTIALS: "true",
+        });
+        expect(config).toEqual({
+            host: "127.0.0.1",
+            port: 2222,
+            maxLoop: 3,
+            loginDelay: 500,
+            maxConnections: 20,
+            brightnessThreshold: 60,
+            logCredentials: true,
+        });
+    });
+
+    test("logCredentials is false for any value other than the string 'true'", () => {
+        expect(loadConfig({ LOG_CREDENTIALS: "1" }).logCredentials).toBe(false);
+        expect(loadConfig({ LOG_CREDENTIALS: "false" }).logCredentials).toBe(
+            false
+        );
+    });
+});