diff --git a/.gitignore b/.gitignore
index ae4fc8f72..bb75ba846 100644
--- a/.gitignore
+++ b/.gitignore
@@ -54,3 +54,5 @@ examples/src/YOLOv3-Training-Snowman-Detector/train.log
 examples/src/YOLOv3-Training-Snowman-Detector/darknet53.conv.74
 examples/src/YOLOv3-Training-Snowman-Detector/weights
 docs/
+lib/*.d.ts.map
+install/*.d.ts.map
diff --git a/CHANGELOG.md b/CHANGELOG.md
index eb6b048a4..223554783 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,5 +1,11 @@
 # changelog
 
+## Version 6.4.5
+- drop .ts files from npm package.
+- add .d.ts file for ts files in npm package.
+- add .d.ts.map file for ts files in npm package.
+- fix [issue 81](https://github.com/UrielCh/opencv4nodejs/issues/81)
+  
 ## Version 6.4.4
 - remove typescript requirement at setup [PR-78](https://github.com/UrielCh/opencv4nodejs/pull/78)
 - [PR-80](https://github.com/UrielCh/opencv4nodejs/pull/80)
diff --git a/package.json b/package.json
index fcbb58ec0..d87583bcc 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "@u4/opencv4nodejs",
-  "version": "6.4.4",
+  "version": "6.4.5",
   "description": "Asynchronous OpenCV 3.x / 4.x nodejs bindings with JavaScript and TypeScript API.",
   "keywords": [
     "opencv",
@@ -37,13 +37,13 @@
   "scripts": {
     "build": "tsc --pretty --project .",
     "prepack": "npm run build",
-    "install": "npm run build && node bin/install.js auto",
-    "install_Mac": "npm run build && CXXFLAGS=\"-std=c++14 -Wno-c++11-narrowing\" node ./install/install.js --version 4.5.3 build",
-    "install_default": "npm run build && node bin/install.js rebuild",
+    "install": "node bin/install.js auto",
+    "install_Mac": "CXXFLAGS=\"-std=c++14 -Wno-c++11-narrowing\" node ./install/install.js --version 4.5.3 build",
+    "install_default": "node bin/install.js rebuild",
     "install_ubuntu": "echo call: sudo apt install libopencv-dev; build-opencv --incDir /usr/include/opencv4/ --libDir /lib/x86_64-linux-gnu/ --binDir=/usr/bin/ --nobuild rebuild",
-    "install_macm1": "npm run build && node bin/install.js --version 4.5.4 --flag=\"-DCMAKE_SYSTEM_PROCESSOR=arm64 -DCMAKE_OSX_ARCHITECTURES=arm64 -DWITH_FFMPEG=ON\" rebuild",
-    "install_cuda": "npm run build && cross-env OPENCV4NODEJS_DISABLE_AUTOBUILD= node bin/install.js --version 4.6.0 --flags=\"-DWITH_CUDA=ON -DWITH_CUDNN=ON -DOPENCV_DNN_CUDA=ON -DCUDA_FAST_MATH=ON -DWITH_FFMPEG=ON\" rebuild",
-    "install_4_6_0_cuda_30XX": "npm run build && cross-env OPENCV4NODEJS_DISABLE_AUTOBUILD= node bin/install.js --keepsource --version 4.6.0 --cuda --cudaArch=8.6 rebuild",
+    "install_macm1": "node bin/install.js --version 4.5.4 --flag=\"-DCMAKE_SYSTEM_PROCESSOR=arm64 -DCMAKE_OSX_ARCHITECTURES=arm64 -DWITH_FFMPEG=ON\" rebuild",
+    "install_cuda": "cross-env OPENCV4NODEJS_DISABLE_AUTOBUILD= node bin/install.js --version 4.6.0 --flags=\"-DWITH_CUDA=ON -DWITH_CUDNN=ON -DOPENCV_DNN_CUDA=ON -DCUDA_FAST_MATH=ON -DWITH_FFMPEG=ON\" rebuild",
+    "install_4_6_0_cuda_30XX": "cross-env OPENCV4NODEJS_DISABLE_AUTOBUILD= node bin/install.js --keepsource --version 4.6.0 --cuda --cudaArch=8.6 rebuild",
     "test": "cd test && pnpm install && pnpm run test",
     "samples": "cd examples && pnpm install && npm run build && node ./src/templateMatch/multiMatchBench.js && node ./src/templateMatch/multiMatchColision.js && node ./src/applyColorMap.js && node ./src/asyncMatchFeatures.js && node ./src/faceDetect/asyncFaceDetection.js",
     "do-build": "npm run build && node bin/install.js --version 4.6.0 --jobs MAX build",
@@ -83,9 +83,14 @@
   },
   "files": [
     "cc",
-    "install",
-    "lib",
-    "bin",
+    "install/*.js",
+    "install/*.d.ts",
+    "install/*.map",
+    "lib/**/*.xml",
+    "lib/**/*.js",
+    "lib/**/*.d.ts",
+    "lib/**/*.map",
+    "bin/*.js",
     "typings",
     "binding.gyp",
     "tsconfig.json"
diff --git a/tsconfig.json b/tsconfig.json
index a00547d6f..682817b24 100644
--- a/tsconfig.json
+++ b/tsconfig.json
@@ -6,7 +6,9 @@
     "esModuleInterop": false,
     "noImplicitReturns": true,
     "skipLibCheck": true,
-    "forceConsistentCasingInFileNames": true
+    "forceConsistentCasingInFileNames": true,
+    "declaration": true,
+    "declarationMap": true,
   },
   //"files": [ "./install/install.ts", "./install/parseEnv.ts" ]
   "include": [ "./install/*.ts", "./lib/**/*.ts" ]