move to dotenv + custom env validations

ref #18

src/app.ts

@@ -2,7 +2,7 @@ import consola from "consola";
 import "reflect-metadata";
 import { createExpressServer } from "routing-controllers";
 import authchecker from "./authchecker";
-import { config } from './config';
+import { config, e as errors } from './config';
 import loaders from "./loaders/index";
 import { ErrorHandler } from './middlewares/ErrorHandler';
 
@@ -23,4 +23,9 @@ async function main() {
     );
   });
 }
-main();
+if (errors === 0) {
+  main();
+} else {
+  console.log("error");
+  // something's wrong
+}