feat: Convert all mutation files to js

packages/backend/src/graphql/mutations/register-user.ee.js

@@ -0,0 +1,27 @@
+import User from '../../models/user';
+import Role from '../../models/role';
+
+const registerUser = async (_parent, params) => {
+  const { fullName, email, password } = params.input;
+
+  const existingUser = await User.query().findOne({
+    email: email.toLowerCase(),
+  });
+
+  if (existingUser) {
+    throw new Error('User already exists!');
+  }
+
+  const role = await Role.query().findOne({ key: 'user' });
+
+  const user = await User.query().insert({
+    fullName,
+    email,
+    password,
+    roleId: role.id,
+  });
+
+  return user;
+};
+
+export default registerUser;