feature #4 - enable experimentalDecorators

tsconfig.json

@@ -1,13 +1,16 @@
 {
   "compilerOptions": {
-    "target": "es6",                          /* Specify ECMAScript target version: 'ES3' (default), 'ES5', 'ES2015', 'ES2016', 'ES2017', 'ES2018', 'ES2019', 'ES2020', or 'ESNEXT'. */
+    "target": "es6",
     "module": "CommonJS",                     /* Specify module code generation: 'none', 'commonjs', 'amd', 'system', 'umd', 'es2015', 'es2020', or 'ESNext'. */
     "rootDir": ".",                           /* Specify the root directory of input files. Use to control the output directory structure with --outDir. */
+    "outDir": "./dist"                        /* Redirect output structure to the directory. */,
     "strict": true,                           /* Enable all strict type-checking options. */
     "moduleResolution": "node",               /* Specify module resolution strategy: 'node' (Node.js) or 'classic' (TypeScript pre-1.6). */
     "esModuleInterop": true,                  /* Enables emit interoperability between CommonJS and ES Modules via creation of namespace objects for all imports. Implies 'allowSyntheticDefaultImports'. */
     "skipLibCheck": true,                     /* Skip type checking of declaration files. */
-    "forceConsistentCasingInFileNames": true,  /* Disallow inconsistently-cased references to the same file. */
-    "resolveJsonModule": true
+    "forceConsistentCasingInFileNames": true, /* Disallow inconsistently-cased references to the same file. */
+    "resolveJsonModule": true,
+    "experimentalDecorators": true,            /* Enables experimental support for ES7 decorators. */
+    "emitDecoratorMetadata": true,             /* Enables experimental support for emitting type metadata for decorators. */
   }
 }