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fix(email-resend): support path and preserve base64 content in mapAttachments #16094

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fix(email-resend): support path and preserve base64 content in mapAttachments #16094

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1867f7f
fix(email-resend): support path and preserve base64 content in mapAtt…
guoyangzhen Mar 30, 2026
9b9ee99
fix: resolve TS2322 type error in mapAttachments
guoyangzhen Mar 31, 2026
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21 changes: 16 additions & 5 deletions packages/email-resend/src/index.ts
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Original file line number Diff line number Diff line change
Expand Up @@ -123,17 +123,28 @@ function mapAttachments(
attachments: SendEmailOptions['attachments'],
): ResendSendEmailOptions['attachments'] {
if (!attachments) {
return []
return [] as Attachment[]
}

return attachments.map((attachment) => {
if (!attachment.filename || !attachment.content) {
throw new APIError('Attachment is missing filename or content', 400)
return attachments.map((attachment): Attachment => {
if (!attachment.filename) {
throw new APIError('Attachment is missing filename', 400)
}

if (!attachment.content && !attachment.path) {
throw new APIError('Attachment is missing both content and path', 400)
}

if (attachment.path && !attachment.content) {
return {
filename: attachment.filename,
path: attachment.path,
}
}

if (typeof attachment.content === 'string') {
return {
content: Buffer.from(attachment.content),
content: attachment.content,
filename: attachment.filename,
}
}
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