From 68daa76f1289080bcd390f04851679f33fbc3354 Mon Sep 17 00:00:00 2001
From: Brandon Corbett <Bccorb@users.noreply.github.com>
Date: Sat, 31 Oct 2026 08:40:40 -0400
Subject: [PATCH] feat(core): take the message data shapes from
 @seamless-auth/types

Closes #4
---
 .changeset/shared-message-types.md |  5 +++++
 package-lock.json                  | 24 ++++++++++++++++++++++++
 packages/core/package.json         |  3 +++
 packages/core/src/messages.ts      | 26 ++++++--------------------
 packages/core/src/types.ts         | 25 ++++---------------------
 5 files changed, 42 insertions(+), 41 deletions(-)
 create mode 100644 .changeset/shared-message-types.md

diff --git a/.changeset/shared-message-types.md b/.changeset/shared-message-types.md
new file mode 100644
index 0000000..f0601ba
--- /dev/null
+++ b/.changeset/shared-message-types.md
@@ -0,0 +1,5 @@
+---
+"@seamless-auth/messaging": minor
+---
+
+The message data shapes (`MessagingChannel`, `DeliveryResult`, `EmailMessage`, `SmsMessage`, `SendOtpEmailInput`, `SendOtpSmsInput` and `SendMagicLinkEmailInput`) now come from `@seamless-auth/types`, the same definitions the auth API and server adapters use. `AuthDeliveryInstruction`, the delivery payload the API returns when the adopter owns delivery, is now exported too. The shapes are unchanged, and `@seamless-auth/types` is only referenced by the type declarations, so nothing new loads at runtime.
diff --git a/package-lock.json b/package-lock.json
index e5616a9..11f8515 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -1289,6 +1289,18 @@
       "resolved": "packages/twilio",
       "link": true
     },
+    "node_modules/@seamless-auth/types": {
+      "version": "0.33.0",
+      "resolved": "https://registry.npmjs.org/@seamless-auth/types/-/types-0.33.0.tgz",
+      "integrity": "sha512-zg0vp+4BGH8gEktYrpU040mAuB/Ebz0orLxqNf3iOavYPzqj3ST9i12IwUKGkbu4A1455JAexrTSZH6C7400jQ==",
+      "license": "Apache-2.0",
+      "dependencies": {
+        "zod": "^4.5.0"
+      },
+      "engines": {
+        "node": ">=22"
+      }
+    },
     "node_modules/@smithy/config-resolver": {
       "version": "4.4.17",
       "resolved": "https://registry.npmjs.org/@smithy/config-resolver/-/config-resolver-4.4.17.tgz",
@@ -4176,6 +4188,15 @@
         "url": "https://github.com/sponsors/sindresorhus"
       }
     },
+    "node_modules/zod": {
+      "version": "4.6.7",
+      "resolved": "https://registry.npmjs.org/zod/-/zod-4.6.7.tgz",
+      "integrity": "sha512-g8W2D2kU6a8untc053fX1uVBKzM7yqAxW/3zwk83+6RyF2+SKOuV+c0wBDhUwzV1PaGapmZH+rmcUzPf+3CGwg==",
+      "license": "MIT",
+      "funding": {
+        "url": "https://github.com/sponsors/colinhacks"
+      }
+    },
     "packages/aws": {
       "name": "@seamless-auth/messaging-aws",
       "version": "0.2.0",
@@ -4244,6 +4265,9 @@
       "name": "@seamless-auth/messaging",
       "version": "0.2.0",
       "license": "Apache-2.0",
+      "dependencies": {
+        "@seamless-auth/types": "^0.33.0"
+      },
       "engines": {
         "node": ">=18"
       }
diff --git a/packages/core/package.json b/packages/core/package.json
index 1a38cbe..1fabd61 100644
--- a/packages/core/package.json
+++ b/packages/core/package.json
@@ -27,5 +27,8 @@
   },
   "publishConfig": {
     "access": "public"
+  },
+  "dependencies": {
+    "@seamless-auth/types": "^0.33.0"
   }
 }
diff --git a/packages/core/src/messages.ts b/packages/core/src/messages.ts
index 114579b..51e5343 100644
--- a/packages/core/src/messages.ts
+++ b/packages/core/src/messages.ts
@@ -1,23 +1,9 @@
-export interface SendOtpEmailInput {
-  to: string;
-  token: string;
-  from?: string;
-  subject?: string;
-}
-
-export interface SendOtpSmsInput {
-  to: string;
-  token: string | number;
-  from?: string;
-}
-
-export interface SendMagicLinkEmailInput {
-  to: string;
-  magicLinkUrl: string;
-  token?: string;
-  from?: string;
-  subject?: string;
-}
+export type {
+  AuthDeliveryInstruction,
+  SendMagicLinkEmailInput,
+  SendOtpEmailInput,
+  SendOtpSmsInput,
+} from "@seamless-auth/types";
 
 /**
  * Asks a user to sign in and add a passkey, for example after their account was
diff --git a/packages/core/src/types.ts b/packages/core/src/types.ts
index 02b6712..4180a57 100644
--- a/packages/core/src/types.ts
+++ b/packages/core/src/types.ts
@@ -1,29 +1,12 @@
-export type MessagingChannel = "email" | "sms";
+import type { EmailMessage as SharedEmailMessage } from "@seamless-auth/types";
 
-export interface DeliveryResult {
-  accepted: boolean;
-  provider: string;
-  channel: MessagingChannel;
-  messageId?: string;
-  raw?: unknown;
-}
+export type { DeliveryResult, MessagingChannel, SmsMessage } from "@seamless-auth/types";
 
-export interface EmailMessage {
-  to: string;
-  from?: string;
-  subject: string;
-  text: string;
-  html?: string;
+export type EmailMessage = SharedEmailMessage & {
   /**
    * Extra headers to send with the message, such as `List-Unsubscribe`. Names
    * and values are passed through as given; a transport that cannot send
    * custom headers ignores them.
    */
   headers?: Record<string, string>;
-}
-
-export interface SmsMessage {
-  to: string;
-  from?: string;
-  body: string;
-}
+};