What are Global Objects in Node.js?

// Process - info about current process
console.log(process.pid);
console.log(process.env.NODE_ENV);
console.log(process.cwd());
console.log(process.argv);

// Console
console.log('message');
console.error('error');
console.table([{a: 1}, {a: 2}]);

// Timers
setTimeout(() => {}, 1000);
setInterval(() => {}, 1000);
setImmediate(() => {});

// Buffer
const buf = Buffer.from('hello');

// Module-level (not truly global)
__dirname  // current directory path
__filename // current file path
module     // current module
exports    // module.exports shortcut
require()  // import modules

// Like window in browser
global.myVar = 'accessible everywhere';

// Check if global
console.log(global.setTimeout === setTimeout); // true

// Works in both Node.js and browser
globalThis.myVar = 'universal global';