service-inputs.patch

diff --git a/src/models/product.model.ts b/src/models/product.model.ts
index 4b83d65..03d548f 100644
--- a/src/models/product.model.ts
+++ b/src/models/product.model.ts
@@ -4,12 +4,15 @@ import { UserDocument } from "./user.model";
 
 const nanoid = customAlphabet("abcdefghijklmnopqrstuvwxyz0123456789", 10);
 
-export interface ProductDocument extends mongoose.Document {
+export interface ProductInput {
   user: UserDocument["_id"];
   title: string;
   description: string;
   price: number;
   image: string;
+}
+
+export interface ProductDocument extends ProductInput, mongoose.Document {
   createdAt: Date;
   updatedAt: Date;
 }
diff --git a/src/models/user.model.ts b/src/models/user.model.ts
index ce6ea8f..37dfbc0 100644
--- a/src/models/user.model.ts
+++ b/src/models/user.model.ts
@@ -2,10 +2,13 @@ import mongoose from "mongoose";
 import bcrypt from "bcrypt";
 import config from "config";
 
-export interface UserDocument extends mongoose.Document {
+export interface UserInput {
   email: string;
   name: string;
   password: string;
+}
+
+export interface UserDocument extends UserInput, mongoose.Document {
   createdAt: Date;
   updatedAt: Date;
   comparePassword(candidatePassword: string): Promise<Boolean>;
diff --git a/src/service/product.service.ts b/src/service/product.service.ts
index 2dad4ca..b382b4b 100644
--- a/src/service/product.service.ts
+++ b/src/service/product.service.ts
@@ -1,14 +1,10 @@
-import {
-  DocumentDefinition,
-  FilterQuery,
-  QueryOptions,
-  UpdateQuery,
-} from "mongoose";
-import ProductModel, { ProductDocument } from "../models/product.model";
+import { FilterQuery, QueryOptions, UpdateQuery } from "mongoose";
+import ProductModel, {
+  ProductDocument,
+  ProductInput,
+} from "../models/product.model";
 
-export async function createProduct(
-  input: DocumentDefinition<Omit<ProductDocument, "createdAt" | "updatedAt">>
-) {
+export async function createProduct(input: ProductInput) {
   return ProductModel.create(input);
 }
 
diff --git a/src/service/user.service.ts b/src/service/user.service.ts
index 7dee694..af904d0 100644
--- a/src/service/user.service.ts
+++ b/src/service/user.service.ts
@@ -1,12 +1,8 @@
-import { DocumentDefinition, FilterQuery } from "mongoose";
+import { FilterQuery } from "mongoose";
 import { omit } from "lodash";
-import UserModel, { UserDocument } from "../models/user.model";
+import UserModel, { UserDocument, UserInput } from "../models/user.model";
 
-export async function createUser(
-  input: DocumentDefinition<
-    Omit<UserDocument, "createdAt" | "updatedAt" | "comparePassword">
-  >
-) {
+export async function createUser(input: UserInput) {
   try {
     const user = await UserModel.create(input);