Process Objects in NodeJS

Author: learning-zone

process-object.js

@@ -0,0 +1,52 @@
+//--------------------
+//  Process() Object
+//--------------------
+
+// Example: 01
+const process = require('process');
+//console.log(process);
+
+// Example: 02
+/* process.on('exit', code => {
+  console.log(`About to exit with code: ${code}`);
+});
+ */
+// Example: 03
+process.on('warning', warning => {
+  console.warn(warning.name); // Print the warning name
+  console.warn(warning.message); // Print the warning message
+  console.warn(warning.stack); // Print the stack trace
+});
+
+// Example: 04 process.argv
+process.argv.forEach((val, index) => {
+  console.log(`process.argv: ${index}: ${val}`);
+});
+
+// Example: 05 process.chdir (directory)
+console.log(`Starting directory: ${process.cwd()}`);
+try {
+  process.chdir('./assets');
+  console.log(`New directory: ${process.cwd()}`);
+} catch (err) {
+  console.error(`chdir: ${err}`);
+}
+
+// Example: 06 process.cpuUsage()
+const startUsage = process.cpuUsage();      
+const now = Date.now();                    // spin the CPU for 500 milliseconds
+while (Date.now() - now < 500);
+
+console.log(process.cpuUsage(startUsage)); // { user: 452000, system: 16000 }
+
+
+// Example: 07 process.memoryUsage()
+console.log(process.memoryUsage());
+
+
+// Example: 07 process.pid()
+console.log(`This process is pid: ${process.pid}`);
+
+
+// Example: 08 process.platform()
+console.log(`This platform is: ${process.platform}`);