fix: dogfood resend transport

packages/email/transports/resend.ts

@@ -1,145 +0,0 @@
-import { type SentMessageInfo, type Transport } from 'nodemailer';
-import type Mail from 'nodemailer/lib/mailer';
-import type MailMessage from 'nodemailer/lib/mailer/mail-message';
-import { Resend } from 'resend';
-
-const VERSION = '1.0.0';
-
-type ResendTransportOptions = {
-  apiKey: string;
-};
-
-type ResendResponseError = {
-  statusCode: number;
-  name: string;
-  message: string;
-};
-
-const isResendResponseError = (error: unknown): error is ResendResponseError => {
-  // We could use Zod here, but it's not worth the extra bundle size
-  return (
-    typeof error === 'object' &&
-    error !== null &&
-    'statusCode' in error &&
-    typeof error.statusCode === 'number' &&
-    'name' in error &&
-    typeof error.name === 'string' &&
-    'message' in error &&
-    typeof error.message === 'string'
-  );
-};
-
-/**
- * Transport for sending email via the Resend SDK.
- */
-export class ResendTransport implements Transport<SentMessageInfo> {
-  public name = 'ResendMailTransport';
-  public version = VERSION;
-
-  private _client: Resend;
-  private _options: ResendTransportOptions;
-
-  public static makeTransport(options: Partial<ResendTransportOptions>) {
-    return new ResendTransport(options);
-  }
-
-  constructor(options: Partial<ResendTransportOptions>) {
-    const { apiKey = '' } = options;
-
-    this._options = {
-      apiKey,
-    };
-
-    this._client = new Resend(apiKey);
-  }
-
-  public send(mail: MailMessage, callback: (_err: Error | null, _info: SentMessageInfo) => void) {
-    if (!mail.data.to || !mail.data.from) {
-      return callback(new Error('Missing required fields "to" or "from"'), null);
-    }
-
-    this._client
-      .sendEmail({
-        subject: mail.data.subject ?? '',
-        from: this.toResendFromAddress(mail.data.from),
-        to: this.toResendAddresses(mail.data.to),
-        cc: this.toResendAddresses(mail.data.cc),
-        bcc: this.toResendAddresses(mail.data.bcc),
-        html: mail.data.html?.toString() || '',
-        text: mail.data.text?.toString() || '',
-        attachments: this.toResendAttachments(mail.data.attachments),
-      })
-      .then((response) => {
-        if (isResendResponseError(response)) {
-          throw new Error(`[${response.statusCode}]: ${response.name} ${response.message}`);
-        }
-
-        callback(null, response);
-      })
-      .catch((error) => {
-        callback(error, null);
-      });
-  }
-
-  private toResendAddresses(addresses: Mail.Options['to']) {
-    if (!addresses) {
-      return [];
-    }
-
-    if (typeof addresses === 'string') {
-      return [addresses];
-    }
-
-    if (Array.isArray(addresses)) {
-      return addresses.map((address) => {
-        if (typeof address === 'string') {
-          return address;
-        }
-
-        return address.address;
-      });
-    }
-
-    return [addresses.address];
-  }
-
-  private toResendFromAddress(address: Mail.Options['from']) {
-    if (!address) {
-      return '';
-    }
-
-    if (typeof address === 'string') {
-      return address;
-    }
-
-    return `${address.name} <${address.address}>`;
-  }
-
-  private toResendAttachments(attachments: Mail.Options['attachments']) {
-    if (!attachments) {
-      return [];
-    }
-
-    return attachments.map((attachment) => {
-      if (!attachment.filename || !attachment.content) {
-        throw new Error('Attachment is missing filename or content');
-      }
-
-      if (typeof attachment.content === 'string') {
-        return {
-          filename: attachment.filename,
-          content: Buffer.from(attachment.content),
-        };
-      }
-
-      if (attachment.content instanceof Buffer) {
-        return {
-          filename: attachment.filename,
-          content: attachment.content,
-        };
-      }
-
-      throw new Error('Attachment content must be a string or a buffer');
-    });
-  }
-}