feat: autocomplete for testing email addresses

src/emails/interfaces/create-email-options.interface.ts

@@ -32,9 +32,15 @@ interface EmailTemplateOptions {
   };
 }
 
+type FromTestingAddress = '[email protected]';
+type ToTestingAddress =
+  | '[email protected]'
+  | '[email protected]'
+  | '[email protected]';
+
 interface CreateEmailBaseOptionsWithTemplate
   extends Omit<CreateEmailBaseOptions, 'from' | 'subject'> {
-  from?: string;
+  from?: FromTestingAddress | (string & {});
   subject?: string;
 }
 
@@ -62,7 +68,7 @@ interface CreateEmailBaseOptions {
    *
    * @link https://resend.com/docs/api-reference/emails/send-email#body-parameters
    */
-  from: string;
+  from: FromTestingAddress | (string & {});
   /**
    * Custom headers to add to the email.
    *
@@ -92,7 +98,7 @@ interface CreateEmailBaseOptions {
    *
    * @link https://resend.com/docs/api-reference/emails/send-email#body-parameters
    */
-  to: string | string[];
+  to: ToTestingAddress | (string & {}) | (ToTestingAddress | (string & {}))[];
   /**
    * The id of the topic you want to send to
    *