refactor code

Author: sommeeeer

src/batch/batch.ts

@@ -42,8 +42,7 @@ export class Batch {
           }
         }
         const reactElement = email.react as React.ReactElement;
-        const html = await this.renderAsync(reactElement);
-        email.html = html;
+        email.html = await this.renderAsync(reactElement);
         if (email.text === undefined) {
           email.text = await this.renderAsync(reactElement, {
             plainText: true,

src/emails/emails.ts

@@ -52,8 +52,7 @@ export class Emails {
       }
 
       const reactElement = payload.react as React.ReactElement;
-      const html = await this.renderAsync(reactElement);
-      payload.html = html;
+      payload.html = await this.renderAsync(reactElement);
       if (payload.text === undefined) {
         payload.text = await this.renderAsync(reactElement, {
           plainText: true,