Upgrade to node.js 18.12.1 for expressjs (#7714)

* Upgrade to node.js 18.12.1 for expressjs

* Fix node cluster for expressjs

frameworks/JavaScript/express/express-mongodb.dockerfile

@@ -1,4 +1,4 @@
-FROM node:16.14.0-slim
+FROM node:18.12.1-slim
 
 COPY ./ ./
 

frameworks/JavaScript/express/express-mysql.dockerfile

@@ -1,4 +1,4 @@
-FROM node:16.14.0-slim
+FROM node:18.12.1-slim
 
 COPY ./ ./
 

frameworks/JavaScript/express/express-postgres.dockerfile

@@ -1,4 +1,4 @@
-FROM node:16.14.0-slim
+FROM node:18.12.1-slim
 
 COPY ./ ./
 

frameworks/JavaScript/express/express.dockerfile

@@ -1,4 +1,4 @@
-FROM node:16.14.0-slim
+FROM node:18.12.1-slim
 
 COPY ./ ./
 

frameworks/JavaScript/express/graphql-mongodb-app.js

@@ -14,7 +14,7 @@ mongoose.connect('mongodb://tfb-database/hello_world').then(() => {
   console.log('Failed connection attempt to Mongo: ', err);
 });
 
-if (cluster.isMaster) {
+if (cluster.isPrimary) {
   // Fork workers.
   for (let i = 0; i < numCPUs; i++) {
     cluster.fork();

frameworks/JavaScript/express/graphql-mysql-app.js

@@ -5,7 +5,7 @@ const app = express();
 const bodyParser = require('body-parser');
 const port = 8080;
 
-if (cluster.isMaster) {
+if (cluster.isPrimary) {
   // Fork workers.
   for (let i = 0; i < numCPUs; i++) {
     cluster.fork();

frameworks/JavaScript/express/graphql-postgres-app.js

@@ -5,7 +5,7 @@ const app = express();
 const bodyParser = require('body-parser');
 const port = 8080;
 
-if (cluster.isMaster) {
+if (cluster.isPrimary) {
   // Fork workers.
   for (let i = 0; i < numCPUs; i++) {
     cluster.fork();

frameworks/JavaScript/express/mongodb-app.js

@@ -31,7 +31,7 @@ const FortuneSchema = new mongoose.Schema({
   }),
   MFortune = mongoose.model('fortune', FortuneSchema);
 
-if (cluster.isMaster) {
+if (cluster.isPrimary) {
   // Fork workers.
   for (let i = 0; i < numCPUs; i++) {
     cluster.fork();

frameworks/JavaScript/express/mysql-app.js

@@ -43,7 +43,7 @@ const Fortune = sequelize.define('Fortune', {
     freezeTableName: true
   });
 
-if (cluster.isMaster) {
+if (cluster.isPrimary) {
   // Fork workers.
   for (let i = 0; i < numCPUs; i++) {
     cluster.fork();

frameworks/JavaScript/express/postgresql-app.js

@@ -49,7 +49,7 @@ const randomWorldPromise = () => {
   }).catch((err) => process.exit(1));
 };
 
-if (cluster.isMaster) {
+if (cluster.isPrimary) {
   // Fork workers.
   for (let i = 0; i < numCPUs; i++) {
     cluster.fork();