diff --git a/packages/async-queue/src/main.ts b/packages/async-queue/src/main.ts
index 028e02b2..9607352f 100644
--- a/packages/async-queue/src/main.ts
+++ b/packages/async-queue/src/main.ts
@@ -1,7 +1,7 @@
 import {newFlatomise} from '@alwatr/flatomise';
 import {packageTracer} from '@alwatr/package-tracer';
 
-packageTracer.add(__package_name__, __package_version__);
+__dev_mode__: packageTracer.add(__package_name__, __package_version__);
 
 /**
  * A queue that executes async tasks in order like mutex and semaphore methodology
diff --git a/packages/dedupe/src/main.ts b/packages/dedupe/src/main.ts
index 0e9abf12..1135b257 100644
--- a/packages/dedupe/src/main.ts
+++ b/packages/dedupe/src/main.ts
@@ -1,6 +1,9 @@
 import {getGlobalThis} from '@alwatr/global-this';
+import {packageTracer} from '@alwatr/package-tracer';
 import '@alwatr/polyfill-has-own';
 
+__dev_mode__: packageTracer.add(__package_name__, __package_version__);
+
 const globalThis_ = getGlobalThis<{__alwatr_dedupe__: string | true}>();
 
 if (typeof globalThis_.__alwatr_dedupe__ === 'undefined') {
diff --git a/packages/deep-clone/src/main.ts b/packages/deep-clone/src/main.ts
index 2cec71b8..78657be6 100644
--- a/packages/deep-clone/src/main.ts
+++ b/packages/deep-clone/src/main.ts
@@ -1,6 +1,6 @@
 import {packageTracer} from '@alwatr/package-tracer';
 
-packageTracer.add(__package_name__, __package_version__);
+__dev_mode__: packageTracer.add(__package_name__, __package_version__);
 
 /**
  * Clone deeply nested objects and arrays.
diff --git a/packages/delay/src/main.ts b/packages/delay/src/main.ts
index ee902c5f..c184a4ff 100644
--- a/packages/delay/src/main.ts
+++ b/packages/delay/src/main.ts
@@ -1,7 +1,7 @@
 import {packageTracer} from '@alwatr/package-tracer';
 import {parseDuration, type Duration} from '@alwatr/parse-duration';
 
-packageTracer.add(__package_name__, __package_version__);
+__dev_mode__: packageTracer.add(__package_name__, __package_version__);
 
 import {requestAnimationFrame, requestIdleCallback} from './polyfill.js';
 
diff --git a/packages/exit-hook/src/main.ts b/packages/exit-hook/src/main.ts
index 761588e1..4112d18d 100644
--- a/packages/exit-hook/src/main.ts
+++ b/packages/exit-hook/src/main.ts
@@ -1,7 +1,7 @@
 import {deduplicate} from '@alwatr/dedupe';
 import {packageTracer} from '@alwatr/package-tracer';
 
-packageTracer.add(__package_name__, __package_version__);
+__dev_mode__: packageTracer.add(__package_name__, __package_version__);
 
 deduplicate({name: __package_name__});
 
diff --git a/packages/fetch/src/core.ts b/packages/fetch/src/core.ts
index 5e852336..8a2bfda6 100644
--- a/packages/fetch/src/core.ts
+++ b/packages/fetch/src/core.ts
@@ -1,17 +1,19 @@
 import {delay} from '@alwatr/delay';
-import {globalScope} from '@alwatr/global-this';
+import {getGlobalThis} from '@alwatr/global-this';
 import {createLogger} from '@alwatr/logger';
 import {packageTracer} from '@alwatr/package-tracer';
 import {parseDuration} from '@alwatr/parse-duration';
 
 import type {FetchOptions} from './type.js';
 
-packageTracer.add(__package_name__, __package_version__);
+__dev_mode__: packageTracer.add(__package_name__, __package_version__);
 
-export const logger_ = createLogger('@alwatr/fetch');
+export const logger_ = /* #__PURE__ */ createLogger('@alwatr/fetch');
+
+const globalThis_ = /* #__PURE__ */ getGlobalThis();
 
 let cacheStorage_: Cache;
-export const cacheSupported = Object.hasOwn(globalScope, 'caches');
+export const cacheSupported = /* #__PURE__ */ Object.hasOwn(globalThis_, 'caches');
 
 const duplicateRequestStorage_: Record<string, Promise<Response>> = {};
 
@@ -215,7 +217,7 @@ export async function handleRetryPattern_(options: Required<FetchOptions>): Prom
   catch (err) {
     logger_.accident('fetch', 'fetch_failed_retry', err);
 
-    if (globalScope.navigator?.onLine === false) {
+    if (globalThis_.navigator?.onLine === false) {
       logger_.accident('handleRetryPattern_', 'offline', 'Skip retry because offline');
       throw err;
     }
@@ -232,7 +234,7 @@ export async function handleRetryPattern_(options: Required<FetchOptions>): Prom
  */
 export function handleTimeout_(options: FetchOptions): Promise<Response> {
   if (options.timeout === 0) {
-    return globalScope.fetch(options.url, options);
+    return globalThis_.fetch(options.url, options);
   }
   // else
   logger_.logMethod?.('handleTimeout_');
@@ -257,7 +259,7 @@ export function handleTimeout_(options: FetchOptions): Promise<Response> {
     //   });
     // });
 
-    globalScope
+    globalThis_
       .fetch(options.url, options)
       .then((response) => resolved(response))
       .catch((reason) => reject(reason))
diff --git a/packages/flat-string/src/main.ts b/packages/flat-string/src/main.ts
index f8d921fb..7a280e42 100644
--- a/packages/flat-string/src/main.ts
+++ b/packages/flat-string/src/main.ts
@@ -1,6 +1,6 @@
 import {packageTracer} from '@alwatr/package-tracer';
 
-packageTracer.add(__package_name__, __package_version__);
+__dev_mode__: packageTracer.add(__package_name__, __package_version__);
 
 /**
  * This function simplifies the complex C structures that are part of a combined JavaScript string.
diff --git a/packages/flatomise/src/main.ts b/packages/flatomise/src/main.ts
index ee648199..28edba40 100644
--- a/packages/flatomise/src/main.ts
+++ b/packages/flatomise/src/main.ts
@@ -1,6 +1,6 @@
 import {packageTracer} from '@alwatr/package-tracer';
 
-packageTracer.add(__package_name__, __package_version__);
+__dev_mode__: packageTracer.add(__package_name__, __package_version__);
 
 /**
  * Flat promise that can be resolved or rejected from outside.
diff --git a/packages/is-number/src/main.ts b/packages/is-number/src/main.ts
index 175eb45f..efbf4e7f 100644
--- a/packages/is-number/src/main.ts
+++ b/packages/is-number/src/main.ts
@@ -1,6 +1,6 @@
 import {packageTracer} from '@alwatr/package-tracer';
 
-packageTracer.add(__package_name__, __package_version__);
+__dev_mode__: packageTracer.add(__package_name__, __package_version__);
 
 /**
  * Check the value is number or can convert to a number, for example string ' 123 ' can be converted to 123
diff --git a/packages/local-storage/src/main.ts b/packages/local-storage/src/main.ts
index 95611a6b..a54ce4fa 100644
--- a/packages/local-storage/src/main.ts
+++ b/packages/local-storage/src/main.ts
@@ -1,6 +1,6 @@
 import {packageTracer} from '@alwatr/package-tracer';
 
-packageTracer.add(__package_name__, __package_version__);
+__dev_mode__: packageTracer.add(__package_name__, __package_version__);
 
 /**
  * Parse json string without throwing error.
diff --git a/packages/logger/src/logger.ts b/packages/logger/src/logger.ts
index 88f1fef4..ab2dcfa6 100644
--- a/packages/logger/src/logger.ts
+++ b/packages/logger/src/logger.ts
@@ -3,7 +3,7 @@ import {platformInfo} from '@alwatr/platform-info';
 
 import type {AlwatrLogger} from './type.js';
 
-packageTracer.add(__package_name__, __package_version__);
+__dev_mode__: packageTracer.add(__package_name__, __package_version__);
 
 const defaultDebugMode =
   platformInfo.development ||
diff --git a/packages/node-fs/src/common.ts b/packages/node-fs/src/common.ts
index 1ba39dba..a67de36e 100644
--- a/packages/node-fs/src/common.ts
+++ b/packages/node-fs/src/common.ts
@@ -2,8 +2,8 @@ import {AsyncQueue} from '@alwatr/async-queue';
 import {createLogger} from '@alwatr/logger';
 import {packageTracer} from '@alwatr/package-tracer';
 
-packageTracer.add(__package_name__, __package_version__);
+__dev_mode__: packageTracer.add(__package_name__, __package_version__);
 
-export const logger = createLogger('@alwatr/node-fs');
+export const logger = /* #__PURE__ */ createLogger('@alwatr/node-fs');
 
-export const asyncQueue = new AsyncQueue();
+export const asyncQueue = /* #__PURE__ */ new AsyncQueue();
diff --git a/packages/package-tracer/src/main.ts b/packages/package-tracer/src/main.ts
index afb9f76e..efc3e152 100644
--- a/packages/package-tracer/src/main.ts
+++ b/packages/package-tracer/src/main.ts
@@ -77,3 +77,5 @@ export const packageTracer = {
     return this.list[packageName];
   },
 } as const;
+
+__dev_mode__: packageTracer.add(__package_name__, __package_version__);
diff --git a/packages/parse-duration/src/main.ts b/packages/parse-duration/src/main.ts
index 5916b3f8..646d01b7 100644
--- a/packages/parse-duration/src/main.ts
+++ b/packages/parse-duration/src/main.ts
@@ -1,7 +1,7 @@
 import {isNumber} from '@alwatr/is-number';
 import {packageTracer} from '@alwatr/package-tracer';
 
-packageTracer.add(__package_name__, __package_version__);
+__dev_mode__: packageTracer.add(__package_name__, __package_version__);
 
 /**
  * Unit conversion table
diff --git a/packages/platform-info/src/main.ts b/packages/platform-info/src/main.ts
index e4b0d0a9..28b2475e 100644
--- a/packages/platform-info/src/main.ts
+++ b/packages/platform-info/src/main.ts
@@ -1,6 +1,6 @@
 import {packageTracer} from '@alwatr/package-tracer';
 
-packageTracer.add(__package_name__, __package_version__);
+__dev_mode__: packageTracer.add(__package_name__, __package_version__);
 
 /**
  * Represents information about the current platform.
diff --git a/packages/playground/src/main.ts b/packages/playground/src/main.ts
index 72500ad3..1d43c3c3 100644
--- a/packages/playground/src/main.ts
+++ b/packages/playground/src/main.ts
@@ -1,8 +1,9 @@
 import {createLogger} from '@alwatr/nanolib';
-// import {exitHook} from '@alwatr/nanolib/node';
+import {exitHook} from '@alwatr/nanolib/exit-hook';
+import '@alwatr/nanolib/node-fs'
 
 createLogger('playground');
 
-// exitHook(() => {
-//   console.log('Exiting...');
-// });
+exitHook(() => {
+  console.log('Exiting...');
+});
diff --git a/packages/polyfill-has-own/src/main.ts b/packages/polyfill-has-own/src/main.ts
index 73df5ebb..37b5df24 100644
--- a/packages/polyfill-has-own/src/main.ts
+++ b/packages/polyfill-has-own/src/main.ts
@@ -1,6 +1,6 @@
 import {packageTracer} from '@alwatr/package-tracer';
 
-packageTracer.add(__package_name__, __package_version__);
+__dev_mode__: packageTracer.add(__package_name__, __package_version__);
 
 /* eslint-disable no-prototype-builtins */
 
diff --git a/packages/redner-state/src/main.ts b/packages/redner-state/src/main.ts
index 447a31b5..f948de84 100644
--- a/packages/redner-state/src/main.ts
+++ b/packages/redner-state/src/main.ts
@@ -1,9 +1,9 @@
 import {createLogger} from '@alwatr/logger';
 import {packageTracer} from '@alwatr/package-tracer';
 
-const logger = createLogger(__package_name__);
+__dev_mode__: packageTracer.add(__package_name__, __package_version__);
 
-packageTracer.add(__package_name__, __package_version__);
+const logger = /* #__PURE__ */ createLogger(__package_name__);
 
 export const renderState = <R, T extends string>(
   state: T,