diff --git a/package.json b/package.json
index 0c6d72b..55d1b16 100644
--- a/package.json
+++ b/package.json
@@ -15,7 +15,7 @@
     "test": "test"
   },
   "scripts": {
-    "build": "tsc -p src/tsconfig.json && rollup -c",
+    "build": "tsc --declaration src/vue-property-decorator.ts --outDir lib && rollup -c",
     "test": "jest"
   },
   "files": [
@@ -28,8 +28,8 @@
     "reflect-metadata": "^0.1.13",
     "rollup": "^1.15.6",
     "rollup-plugin-commonjs": "^10.0.0",
-    "rollup-plugin-typescript": "^1.0.1",
     "ts-jest": "^24.0.2",
+    "tslib": "^1.10.0",
     "typescript": "^3.5.2"
   },
   "typings": "./lib/vue-property-decorator.d.ts",
diff --git a/rollup.config.js b/rollup.config.js
index a632636..87343b0 100644
--- a/rollup.config.js
+++ b/rollup.config.js
@@ -5,12 +5,10 @@ export default {
     format: 'umd',
     name: 'VuePropertyDecorator',
     globals: {
-      'vue': 'Vue',
-      'vue-class-component': 'VueClassComponent'
+      vue: 'Vue',
+      'vue-class-component': 'VueClassComponent',
     },
     exports: 'named',
   },
-  external: [
-    'vue', 'vue-class-component', 'reflect-metadata'
-  ],
+  external: ['vue', 'vue-class-component', 'reflect-metadata'],
 }
diff --git a/tsconfig.json b/tsconfig.json
index dcde558..95e14af 100644
--- a/tsconfig.json
+++ b/tsconfig.json
@@ -2,18 +2,18 @@
   "compilerOptions": {
     /* Basic Options */
     // "incremental": true,                   /* Enable incremental compilation */
-    "target": "ES5", /* Specify ECMAScript target version: 'ES3' (default), 'ES5', 'ES2015', 'ES2016', 'ES2017', 'ES2018', 'ES2019' or 'ESNEXT'. */
-    "module": "es2015", /* Specify module code generation: 'none', 'commonjs', 'amd', 'system', 'umd', 'es2015', or 'ESNext'. */
+    "target": "ES5" /* Specify ECMAScript target version: 'ES3' (default), 'ES5', 'ES2015', 'ES2016', 'ES2017', 'ES2018', 'ES2019' or 'ESNEXT'. */,
+    "module": "es2015" /* Specify module code generation: 'none', 'commonjs', 'amd', 'system', 'umd', 'es2015', or 'ESNext'. */,
     "lib": [
       "dom",
       "es2015",
       "es2016",
       "es2017"
-    ], /* Specify library files to be included in the compilation. */
+    ] /* Specify library files to be included in the compilation. */,
     // "allowJs": true,                       /* Allow javascript files to be compiled. */
     // "checkJs": true,                       /* Report errors in .js files. */
     // "jsx": "preserve",                     /* Specify JSX code generation: 'preserve', 'react-native', or 'react'. */
-    // "declaration": true,                   /* Generates corresponding '.d.ts' file. */
+    "declaration": true /* Generates corresponding '.d.ts' file. */,
     // "declarationMap": true,                /* Generates a sourcemap for each corresponding '.d.ts' file. */
     // "sourceMap": true,                     /* Generates corresponding '.map' file. */
     // "outFile": "./",                       /* Concatenate and emit output to single file. */
@@ -27,7 +27,7 @@
     // "downlevelIteration": true,            /* Provide full support for iterables in 'for-of', spread, and destructuring when targeting 'ES5' or 'ES3'. */
     // "isolatedModules": true,               /* Transpile each file as a separate module (similar to 'ts.transpileModule'). */
     /* Strict Type-Checking Options */
-    "strict": true, /* Enable all strict type-checking options. */
+    "strict": true /* Enable all strict type-checking options. */,
     // "noImplicitAny": true,                 /* Raise error on expressions and declarations with an implied 'any' type. */
     // "strictNullChecks": true,              /* Enable strict null checks. */
     // "strictFunctionTypes": true,           /* Enable strict checking of function types. */
@@ -41,14 +41,14 @@
     // "noImplicitReturns": true,             /* Report error when not all code paths in function return a value. */
     // "noFallthroughCasesInSwitch": true,    /* Report errors for fallthrough cases in switch statement. */
     /* Module Resolution Options */
-    "moduleResolution": "node", /* Specify module resolution strategy: 'node' (Node.js) or 'classic' (TypeScript pre-1.6). */
+    "moduleResolution": "node" /* Specify module resolution strategy: 'node' (Node.js) or 'classic' (TypeScript pre-1.6). */,
     // "baseUrl": "./",                       /* Base directory to resolve non-absolute module names. */
     // "paths": {},                           /* A series of entries which re-map imports to lookup locations relative to the 'baseUrl'. */
     // "rootDirs": [],                        /* List of root folders whose combined content represents the structure of the project at runtime. */
     // "typeRoots": [],                       /* List of folders to include type definitions from. */
     // "types": [],                           /* Type declaration files to be included in compilation. */
     // "allowSyntheticDefaultImports": true,  /* Allow default imports from modules with no default export. This does not affect code emit, just typechecking. */
-    "esModuleInterop": true, /* Enables emit interoperability between CommonJS and ES Modules via creation of namespace objects for all imports. Implies 'allowSyntheticDefaultImports'. */
+    "esModuleInterop": true /* Enables emit interoperability between CommonJS and ES Modules via creation of namespace objects for all imports. Implies 'allowSyntheticDefaultImports'. */,
     // "preserveSymlinks": true,              /* Do not resolve the real path of symlinks. */
     // "allowUmdGlobalAccess": true,          /* Allow accessing UMD globals from modules. */
     /* Source Map Options */
@@ -57,7 +57,7 @@
     // "inlineSourceMap": true,               /* Emit a single file with source maps instead of having a separate file. */
     // "inlineSources": true,                 /* Emit the source alongside the sourcemaps within a single file; requires '--inlineSourceMap' or '--sourceMap' to be set. */
     /* Experimental Options */
-    "experimentalDecorators": true, /* Enables experimental support for ES7 decorators. */
+    "experimentalDecorators": true /* Enables experimental support for ES7 decorators. */,
     "emitDecoratorMetadata": true /* Enables experimental support for emitting type metadata for decorators. */
   }
 }