diff --git a/fixup.sh b/fixup.sh
deleted file mode 100755
index 7307016..0000000
--- a/fixup.sh
+++ /dev/null
@@ -1,11 +0,0 @@
-cat >dist/cjs/package.json <<!EOF
-{
-    "type": "commonjs"
-}
-!EOF
-
-cat >dist/mjs/package.json <<!EOF
-{
-    "type": "module"
-}
-!EOF
\ No newline at end of file
diff --git a/package.json b/package.json
index e642edc..a0cbf2b 100644
--- a/package.json
+++ b/package.json
@@ -1,24 +1,16 @@
 {
   "name": "simple-ascii-chart",
-  "version": "4.0.1",
+  "version": "4.0.2",
   "description": "Simple ascii chart generator",
-  "main": "dist/cjs/index.js",
-  "module": "dist/mjs/index.js",
-  "exports": {
-    ".": {
-      "import": "./dist/mjs/index.js",
-      "require": "./dist/cjs/index.js"
-    }
-  },
-  "types": "dist/types/index.d.ts",
+  "main": "dist/index.js",
+  "types": "dist/index.d.ts",
   "scripts": {
     "start": "tsc-watch -p tsconfig.json --preserveWatchOutput -w --onSuccess 'node ./dist/index.js'",
     "lint": "eslint . --ext .ts,.js",
     "lint:fix": "eslint . --ext .ts,.js --fix",
     "test": "jest --coverage",
     "test:watch": "jest --watch",
-    "build:types": "tsc --emitDeclarationOnly --declaration --outDir dist/types",
-    "build": "rm -fr dist/* && tsc -p tsconfig-mjs.json && tsc -p tsconfig-cjs.json && ./fixup.sh && npm run build:types",
+    "build": "tsc -p tsconfig.build.json",
     "prepare": "husky install",
     "prepublishOnly": "npm test && npm run lint",
     "preversion": "npm run lint",
diff --git a/tsconfig-cjs.json b/tsconfig-cjs.json
deleted file mode 100644
index ccbd8b1..0000000
--- a/tsconfig-cjs.json
+++ /dev/null
@@ -1,11 +0,0 @@
-{
-  "extends": "./tsconfig.json",
-  "compilerOptions": {
-    "module": "Node16",
-    "moduleResolution": "Node16",
-    "outDir": "dist/cjs"
-  },
-  "ts-node": {
-    "transpileOnly": true
-  }
-}
\ No newline at end of file
diff --git a/tsconfig-mjs.json b/tsconfig-mjs.json
deleted file mode 100644
index cbb8174..0000000
--- a/tsconfig-mjs.json
+++ /dev/null
@@ -1,10 +0,0 @@
-{
-  "extends": "./tsconfig.json",
-  "compilerOptions": {
-    "module": "es2020",
-    "moduleResolution": "node",
-    "outDir": "dist/mjs",
-        "downlevelIteration": true,
-
-  }
-}
\ No newline at end of file
diff --git a/tsconfig.build.json b/tsconfig.build.json
new file mode 100644
index 0000000..c7b692f
--- /dev/null
+++ b/tsconfig.build.json
@@ -0,0 +1,7 @@
+{
+    "extends": "./tsconfig.json",
+    "exclude": [
+        "node_modules",
+        "**/__tests__/*"
+    ]
+}
diff --git a/tsconfig.json b/tsconfig.json
index 3c1db6f..703a858 100644
--- a/tsconfig.json
+++ b/tsconfig.json
@@ -1,15 +1,13 @@
 {
-  "include": ["src"],
-  "exclude": ["node_modules", "dist"],
   "compilerOptions": {
-    "alwaysStrict": true,
-    "esModuleInterop": true,
-    "allowSyntheticDefaultImports": true,
-    "moduleResolution": "node",
+    "rootDir": "src",
+    "outDir": "dist",
+    "allowJs": true,
+    "esModuleInterop": true, 
+    "declaration": true,
     "strict": true,
-    "skipLibCheck": true,
-    "typeRoots": ["./src/types", "node_modules/@types"],
-    "target": "es2020",
-    "rootDirs": ["src"],
+    "downlevelIteration": true,
   },
-}
+  "include": ["./src"],
+  "target": "esnext",
+}
\ No newline at end of file