tsconfig.json

{
	"compilerOptions": {
		"module": "commonjs",
		"target": "es6",
		"outDir": "out",
		"lib": [
			"es6",
			"dom",
			"dom.iterable"
		],
		"types": ["reflect-metadata"],
		"sourceMap": true,
		"rootDir": "src",
		"strict": true ,
        "experimentalDecorators": true,
        "emitDecoratorMetadata": true,
		"skipLibCheck": true
		/* Additional Checks */
		// "noImplicitReturns": true, /* Report error when not all code paths in function return a value. */
		// "noFallthroughCasesInSwitch": true, /* Report errors for fallthrough cases in switch statement. */
		// "noUnusedParameters": true,  /* Report errors on unused parameters. */
	},
	"exclude": [
		"node_modules",
		".vscode-test"
	]
}