How to execute code after all rows of array has been read using Readline module-CodePudding

I am trying to input an array of strings to my program using readline module. an example:

const readline = require('readline');
const r = readline.createInterface({
   input: process.stdin,
   output: process.stdout
});

var arr = [];

r.on('line', (line) => {
   arr.push(line)
   //code that run for every line
})

I want to execute code after all the lines in the array that i input are finished, is there an efficient way to do that? Or is there a way to check if the last line has been read?

sample array to be input:

arr = [
    'Maria Martinez',
    'James Johnson',
    'Maria Garcia',
    'David Smith'
]

CodePudding user response：

You need an event handler for the close event that will indicate when all the lines have been processed.

r.on('close', () => {
    // done processing all lines now
    console.log(arr);
});

And, probably should also be listening for the error event too.