From 84e1031f6e29572e098e6cdb0698193c6b807dd0 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?=EC=9C=A4=EB=8B=A4=EB=B9=88?=
 <116141225+czmcm5@users.noreply.github.com>
Date: Tue, 24 Jun 2025 01:32:55 +0900
Subject: [PATCH 1/2] =?UTF-8?q?chore:=20firebase=20=EC=97=B0=EB=8F=99=20?=
 =?UTF-8?q?=EB=B0=8F=20=ED=85=8C=EC=8A=A4=ED=8A=B8=20=EC=BD=94=EB=93=9C=20?=
 =?UTF-8?q?=EC=B6=94=EA=B0=80?=
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

---
 src/entities/project/project.ts | 35 +++++++++++++++++++++++++++++++++
 src/shared/firebase/firebase.ts | 15 ++++++++++++++
 2 files changed, 50 insertions(+)
 create mode 100644 src/entities/project/project.ts
 create mode 100644 src/shared/firebase/firebase.ts

diff --git a/src/entities/project/project.ts b/src/entities/project/project.ts
new file mode 100644
index 0000000..46a5251
--- /dev/null
+++ b/src/entities/project/project.ts
@@ -0,0 +1,35 @@
+import {
+  addDoc,
+  collection,
+  doc,
+  getDoc,
+  setDoc,
+} from "firebase/firestore/lite";
+
+import { db } from "@shared/firebase/firebase";
+
+export async function getComments() {
+  const docRef = doc(db, "coments", "test");
+  const docSnap = await getDoc(docRef);
+
+  if (!docSnap.exists()) {
+    console.log("No such document!");
+    return null;
+  }
+
+  return docSnap.data();
+}
+
+export async function updateTitle(newTitle: string) {
+  const docRef = doc(db, "coments", "test");
+  await setDoc(docRef, { title: newTitle }, { merge: true });
+  console.log("문서가 새로 작성되거나 덮어쓰기 됐어요.");
+}
+
+export async function addPost(title: string) {
+  const postsRef = collection(db, "posts");
+  const docRef = await addDoc(postsRef, {
+    title,
+  });
+  return docRef.id;
+}
diff --git a/src/shared/firebase/firebase.ts b/src/shared/firebase/firebase.ts
new file mode 100644
index 0000000..2997d57
--- /dev/null
+++ b/src/shared/firebase/firebase.ts
@@ -0,0 +1,15 @@
+import { initializeApp } from "firebase/app";
+import { getFirestore } from "firebase/firestore/lite";
+
+const firebaseConfig = {
+  apiKey: process.env.REACT_APP_API_KEY,
+  authDomain: process.env.REACT_APP_AUTH_DOMAIN,
+  projectId: process.env.REACT_APP_PROJECT_ID,
+  storageBucket: process.env.REACT_APP_STORAGE_BUCKET,
+  messagingSenderId: process.env.REACT_APP_MESSAGEINGSENDER_ID,
+  appId: process.env.REACT_APP_APP_ID,
+  measurementId: process.env.REACT_APP_MEASUREMENT_ID,
+};
+
+const app = initializeApp(firebaseConfig);
+export const db = getFirestore(app);

From a61a6720ad6c4f2d34300af7a17280da4a64c040 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?=EC=9C=A4=EB=8B=A4=EB=B9=88?=
 <116141225+czmcm5@users.noreply.github.com>
Date: Tue, 24 Jun 2025 01:49:25 +0900
Subject: [PATCH 2/2] =?UTF-8?q?chore:=20=ED=95=A8=EC=88=98=20return=20?=
 =?UTF-8?q?=ED=83=80=EC=9E=85=20=EC=B6=94=EA=B0=80?=
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

---
 src/entities/project/project.ts | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/src/entities/project/project.ts b/src/entities/project/project.ts
index 46a5251..7dd5175 100644
--- a/src/entities/project/project.ts
+++ b/src/entities/project/project.ts
@@ -8,7 +8,7 @@ import {
 
 import { db } from "@shared/firebase/firebase";
 
-export async function getComments() {
+export async function getComments(): Promise<null | {}> {
   const docRef = doc(db, "coments", "test");
   const docSnap = await getDoc(docRef);
 
@@ -20,13 +20,13 @@ export async function getComments() {
   return docSnap.data();
 }
 
-export async function updateTitle(newTitle: string) {
+export async function updateTitle(newTitle: string): Promise<void> {
   const docRef = doc(db, "coments", "test");
   await setDoc(docRef, { title: newTitle }, { merge: true });
   console.log("문서가 새로 작성되거나 덮어쓰기 됐어요.");
 }
 
-export async function addPost(title: string) {
+export async function addPost(title: string): Promise<string> {
   const postsRef = collection(db, "posts");
   const docRef = await addDoc(postsRef, {
     title,