process.exit(code)

// An empty array. 
var arr = []; 
  
// Variable a and b 
var a = 8; 
var b = 2; 
  
// While condition to run loop 
// infinite times 
while (a != 0 || b != 0) { 
  
    // Increment then value 
    // of a and b   
    a = a + 1; 
    b = b + 2; 
  
    // Push the sum of a and b 
    // into array 
    arr.push(a + b); 
  
    // If a and b become equal it 
    // will exit the process 
    if (a == b) { 
        console.log("The process will "
        + "exit when a and b become equal"); 
        process.exit(0); 
  
        console.log("Complete Process") 
    } 
  
    //  It will print the result when 
    // a and is not equal 
    else { 
        console.log(arr); 
    } 
} 

// An empty array. 
var arr = []; 
  
// Variable a and b 
var a = 8; 
var b = 2; 
  
// While condition to run 
// loop infinite times 
while (a > b) { 
  
    // Increment then value 
    // of a and b 
    a = a + 1; 
    b = b + 2; 
  
    // Push the sum of a and 
    // b into array 
    arr.push(a + b); 
  
    // If a and b become equal 
    // it will exit the process 
    if (a == b) { 
        console.log("The process will "
        + "exit when a and b become equal"); 
        process.exitCode = 0; 
        console.log("Complete Process") 
    } 
  
    //  It will print the result when 
    // a and is not equal 
    else { 
        console.log(arr); 
    } 
} 

console.log('Code is running'); 
  
process.on('exit', function (code) { 
    return console.log(`Process to exit with code ${code}`); 
});