Refactor MailgunSend#send to use async/await

lib/MailgunSend.js

@@ -65,14 +65,9 @@ class MailgunSend {
    * @param  {object} creds Object of options for sending an email
    * @return {Promise}      Promise that will complete when email sends
    */
-  send(options) {
-    return new Promise((fulfill, reject) => {
-      try {
-        MailgunSend.validate(options);
-      } catch (e) {
-        reject(e);
-        return false;
-      }
+  async send(options) {
+    try {
+      MailgunSend.validate(options);
 
       const mailOpts = {
         from: options.from,
@@ -100,33 +95,31 @@ class MailgunSend {
         mailOpts.bcc = options.bcc;
       }
 
-      return this.mailgun.messages.create(this.domain, mailOpts)
-        .then((response) => {
-          const { id, message } = response;
-          let successMessage = `\n\t🚀  ✉️  Email was successfully sent to ${options.to}!\n`;
-
-          if (options.verbose) {
-            successMessage += `\n\t🗒  API Message: "${message}"\n\n\t🆔  Message ID: ${id}\n`;
-          }
-
-          fulfill(successMessage);
-        })
-        .catch((err) => {
-          if (err.status === 401) {
-            reject(new Error(
-              '\n\t🚫  Your Mailgun API key and/or domain are incorrect.'
+      const response = await this.mailgun.messages.create(this.domain, mailOpts);
+
+      const { id, message } = response;
+      let successMessage = `\n\t🚀  ✉️  Email was successfully sent to ${options.to}!\n`;
+
+      if (options.verbose) {
+        successMessage += `\n\t🗒  API Message: "${message}"\n\n\t🆔  Message ID: ${id}\n`;
+      }
+
+      return successMessage;
+    } catch (err) {
+      if (err.status === 401) {
+        throw new Error(
+          '\n\t🚫  Your Mailgun API key and/or domain are incorrect.'
               + '\n\t🔁  Rerun your command with -R flag to re-enter you credentials.',
-            ));
-          } else if (err.type === 'EUNAVAILABLE') {
-            reject(new Error(
-              '\n\t‼️ 🌐  Looks like you may not be connected to the internet. '
+        );
+      } else if (err.type === 'EUNAVAILABLE') {
+        throw new Error(
+          '\n\t‼️ 🌐  Looks like you may not be connected to the internet. '
               + 'Check your network settings and try again.',
-            ));
-          } else {
-            reject(new Error(`\n\t🚫  ${err.message}`));
-          }
-        });
-    });
+        );
+      } else {
+        throw err;
+      }
+    }
   }
 }