fix errors and formatting in shim

lib/shims/https-server-shim.js

@@ -1,10 +1,13 @@
+/* eslint-disable no-process-env */
+/* eslint-disable no-sync */
 var https = require('https');
 var fs = require('fs');
+var core = require('union/lib/core');
 var RoutingStream = require('union/lib/routing-stream');
 
 module.exports = function (options) {
-  var isArray = Array.isArray(options.after),
-      credentials;
+  var isArray = Array.isArray(options.after);
+  var credentials;
 
   if (!options) {
     throw new Error('options is required to create a server');
@@ -14,9 +17,11 @@ module.exports = function (options) {
     var routingStream = new RoutingStream({
       before: options.before,
       buffer: options.buffer,
-      after: isArray && options.after.map(function (After) {
-        return new After;
-      }),
+      after:
+        isArray &&
+        options.after.map(function (After) {
+          return new After();
+        }),
       request: req,
       response: res,
       limit: options.limit,
@@ -33,29 +38,30 @@ module.exports = function (options) {
     req.pipe(routingStream);
   }
 
-  var serverOptions,
-      credentials;
+  var serverOptions;
 
   serverOptions = options.https;
   if (!serverOptions.key || !serverOptions.cert) {
-    throw new Error('Both options.' + key + '.`key` and options.' + key + '.`cert` are required.');
+    throw new Error(
+      'Both options key and cert are required.'
+    );
   }
 
   credentials = {
-    key:  fs.readFileSync(serverOptions.key),
+    key: fs.readFileSync(serverOptions.key),
     cert: fs.readFileSync(serverOptions.cert),
     passphrase: process.env.NODE_HTTP_SERVER_SSL_PASSPHRASE
   };
 
   if (serverOptions.ca) {
     serverOptions.ca = !Array.isArray(serverOptions.ca)
       ? [serverOptions.ca]
-      : serverOptions.ca
+      : serverOptions.ca;
 
     credentials.ca = serverOptions.ca.map(function (ca) {
       return fs.readFileSync(ca);
     });
   }
 
   return https.createServer(credentials, requestHandler);
-};
+};