Resolve "Transition to ESLint"

src/cli.ts

@@ -24,7 +24,6 @@ const app = express();
 /**
  * Get port from environment and store in Express.
  */
-// tslint:disable-next-line: strict-boolean-expressions
 const port = normalizePort(process.env.PORT || '3000');
 
 /**
@@ -42,9 +41,9 @@ server.on('listening', onListening);
  * Normalize a port into a number, string, or false.
  */
 function normalizePort(value: string) {
-  const portNumber = parseInt(value, 10);
+  const portNumber = Number.parseInt(value, 10);
 
-  if (isNaN(portNumber)) {
+  if (Number.isNaN(portNumber)) {
     // named pipe
     return value;
   }
@@ -60,15 +59,12 @@ function normalizePort(value: string) {
 /**
  * Event listener for HTTP server "error" event.
  */
-// tslint:disable-next-line: completed-docs
-async function onError(error: { code: string; syscall: string; }) {
+async function onError(error: {code: string; syscall: string}) {
   if (error.syscall !== 'listen') {
     throw error;
   }
 
-  const bind = typeof port === 'string'
-    ? `Pipe ${port}`
-    : `Port ${port}`;
+  const bind = typeof port === 'string' ? `Pipe ${port}` : `Port ${port}`;
 
   // handle specific listen errors with friendly messages
   switch (error.code) {
@@ -92,13 +88,10 @@ function onListening() {
   const addr = server.address();
 
   if (addr !== null) {
-    const bind = typeof addr === 'string'
-    ? `pipe ${addr}`
-    : `port ${addr.port}`;
+    const bind = typeof addr === 'string' ? `pipe ${addr}` : `port ${addr.port}`;
     Logger.ok(`Listening on ${bind}`);
   } else {
-    // tslint:disable-next-line: no-floating-promises
-    Logger.error(`Failed to start binding`);
+    void Logger.error(`Failed to start binding`);
   }
 }
 
@@ -108,6 +101,6 @@ configureApp(app, {elasticsearch: Elasticsearch})
     // After app setup listen on provided port, on all network interfaces
     server.listen(port);
   })
-  .catch((err) => {
-    throw err;
+  .catch(error => {
+    throw error;
   });