diff --git a/.build.json b/.build.json
index e3017ab8..7e8790e1 100644
--- a/.build.json
+++ b/.build.json
@@ -31,7 +31,7 @@
     },
   "build": {
     "global": {
-      "target": "es2018",
+      "target": "es2020",
       "sourcemap": false,
       "treeShaking": true,
       "ignoreAnnotations": true,
diff --git a/CHANGELOG.md b/CHANGELOG.md
index 05b946e5..655406ef 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -9,7 +9,7 @@
   
 ## Changelog
   
-### **HEAD -> main** 2021/10/25 mandic00@live.com
+### **HEAD -> main** 2021/10/26 mandic00@live.com
 
 
 ### **release: 2.4.1** 2021/10/25 mandic00@live.com
diff --git a/demo/index-worker.js b/demo/index-worker.js
index d416e4fc..ee729421 100644
--- a/demo/index-worker.js
+++ b/demo/index-worker.js
@@ -6,12 +6,11 @@
 /// <reference lib="webworker"/>
 
 // load Human using IIFE script as Chome Mobile does not support Modules as Workers
-/** @type {Human} */
-const Human = {};
 self.importScripts('../dist/human.js');
 
 let busy = false;
-// eslint-disable-next-line new-cap
+// @ts-ignore
+// eslint-disable-next-line new-cap, no-undef
 const human = new Human.default();
 
 onmessage = async (msg) => { // receive message from main thread
diff --git a/tsconfig.json b/tsconfig.json
index f4daaa72..17b5fe46 100644
--- a/tsconfig.json
+++ b/tsconfig.json
@@ -6,7 +6,7 @@
     "outDir": "types",
     "baseUrl": "./",
     "paths": { "tslib": ["./node_modules/tslib/tslib.d.ts"] },
-    "lib": ["es2020", "dom", "webworker"],
+    "lib": ["esnext", "dom", "webworker"],
     "allowJs": true,
     "allowSyntheticDefaultImports": false,
     "allowUnreachableCode": false,
@@ -15,12 +15,13 @@
     "declaration": true,
     "declarationMap": true,
     "emitDecoratorMetadata": true,
-    "esModuleInterop": true,
+    "esModuleInterop": false,
     "exactOptionalPropertyTypes": true,
     "experimentalDecorators": true,
     "forceConsistentCasingInFileNames": true,
     "importHelpers": true,
     "importsNotUsedAsValues": "error",
+    "isolatedModules": false,
     "noEmitHelpers": true,
     "noEmitOnError": false,
     "noFallthroughCasesInSwitch": true,