Step 11.1: Installing PostgreSQL Client

Co-authored-by: killjoy2013 <killjoy_tr@yahoo.com>

docker-compose.yaml

@@ -0,0 +1,17 @@
+version: "3.8"
+networks:
+  tortilla:
+services:
+  postgresql:
+    restart: always
+    image: postgres:12.2-alpine
+    ports:
+      - "5432:5432"
+    environment:
+      - POSTGRES_USER=testuser
+      - POSTGRES_PASSWORD=testpassword
+      - POSTGRES_DB=whatsapp 
+    volumes:
+      - /var/lib/postgresql/data
+    networks:
+      - tortilla

package.json

@@ -29,6 +29,7 @@
     "@types/jest": "25.2.3",
     "@types/jsonwebtoken": "8.5.0",
     "@types/node": "14.0.4",
+    "@types/pg": "7.14.3",
     "jest": "26.0.1",
     "jest-junit": "10.0.0",
     "prettier": "2.0.5",
@@ -48,7 +49,9 @@
     "graphql-import": "1.0.2",
     "graphql-scalars": "1.1.2",
     "graphql-tools": "5.0.0",
-    "jsonwebtoken": "8.5.1"
+    "jsonwebtoken": "8.5.1",
+    "pg": "8.2.1",
+    "sql-template-strings": "2.2.2"
   },
   "jest": {
     "transform": {

schema/resolvers.ts

@@ -131,7 +131,7 @@ const resolvers: Resolvers = {
         throw Error("req.password and req.passwordConfirm don't match");
       }
 
-      if (users.some(u => u.username === username)) {
+      if (users.some((u) => u.username === username)) {
         throw Error('username already exists');
       }