diff --git a/package.json b/package.json
index d8d7906f43..29fed4ad05 100644
--- a/package.json
+++ b/package.json
@@ -47,10 +47,12 @@
     "rollup-plugin-replace": "~2.2.0",
     "rollup-plugin-terser": "~5.0.0",
     "ts-node": "~8.2.0",
+    "ts-transformer-minify-privates": "~0.1.0",
     "tslib": "1.9.3",
     "tslint": "5.17.0",
     "tslint-eslint-rules": "~5.4.0",
     "tslint-microsoft-contrib": "~6.2.0",
+    "ttypescript": "~1.5.7",
     "typescript": "3.5.1",
     "vrsource-tslint-rules": "6.0.0"
   },
@@ -58,11 +60,11 @@
     "install": "npm run install-hooks && cd tests/e2e && npm i",
     "install-hooks": "node scripts/githooks/install.js",
     "clean": "rimraf lib/ dist/",
-    "bundle-dts": "tsc --noEmit --allowJs dts-config.js && dts-bundle-generator --config dts-config.js",
-    "tsc": "tsc -b src",
-    "tsc-watch": "tsc -b --watch --preserveWatchOutput",
-    "tsc-all": "tsc -b .",
-    "tsc-all-watch": "tsc -b . --watch --preserveWatchOutput",
+    "bundle-dts": "ttsc --noEmit --allowJs dts-config.js && dts-bundle-generator --config dts-config.js",
+    "tsc": "ttsc -b src",
+    "tsc-watch": "ttsc -b --watch --preserveWatchOutput",
+    "tsc-all": "ttsc -b .",
+    "tsc-all-watch": "ttsc -b . --watch --preserveWatchOutput",
     "lint": "npm-run-all -p lint:**",
     "lint:eslint": "eslint --format=unix --ext .js ./",
     "lint:tslint": "tslint --config tslint.json --project tsconfig.all-non-composite.json",
diff --git a/rollup.config.js b/rollup.config.js
index 4908907128..04a4b204e5 100644
--- a/rollup.config.js
+++ b/rollup.config.js
@@ -46,6 +46,12 @@ function getConfig(inputFile, type, isProd) {
 					comments: /@license/,
 					inline_script: true,
 				},
+				mangle: {
+					module: (type === 'module'),
+					properties: {
+						regex: /^_private_/,
+					},
+				},
 			}),
 		],
 	};
diff --git a/tsconfig.base.json b/tsconfig.base.json
index d52a67f65d..da1b9f1c40 100644
--- a/tsconfig.base.json
+++ b/tsconfig.base.json
@@ -19,6 +19,11 @@
 		"noImplicitReturns": true,
 		"noUnusedLocals": true,
 		"outDir": "lib",
+		"plugins": [
+			{
+				"transform": "ts-transformer-minify-privates"
+			}
+		],
 		"preserveConstEnums": true,
 		"resolveJsonModule": true,
 		"rootDir": "./",