input function using user prompt - node.js

Question

I've posted this question before without success.
I have some lines making one user menu getting data from exceljs.
1 - How to put while condition inside this function, to get all rows to menu? Looks like switch(input) doesn't accept loop.
The logic is:
* Read costumers.xlsx to get all costumers.
* Loop all costumers as menu choices.
* After the choice it'll open another xlsx file with the name of chosen costumer
ie:
1 - Costumer1
2 - Costumer2
If I chose 1 I'll open costumer1.xlsx
2 - How to take that choice and pass as string to open the xlsx?
wb_costumers.xlsx.readFile('costumers.xlsx').then(function(){
sh_costumers = wb_costumers.getWorksheet("Sheet1");
var ic = 2;
while (ic <= sh_costumers.rowCount){
console.log("Row " + sh_costumers.getRow(ic).getCell(1) + " - " + sh_costumers.getRow(ic).getCell(2));
ic++;
}
});
function processChoice(input){
return new Promise(function(resolve, reject) {
var error = undefined;
var func;
switch(input){
case sh_costumers.getRow(2).getCell(1).text :
func = addPreset;
break;

Answer 1

After some researches, I've found something about prompt (npm install prompt).
Now I can read my costumers configuration inside the xlsx file.
on workbook costumers.xlsx I have two columns:
cell1 = id
cell2 = costumer's name
on workbook check_(costumer's name).xlsx I have the informations what I want to place somewhere.
That's my code.
const prompt = require('prompt');
var Excel = require('exceljs');
var wb = new Excel.Workbook();
var wbc = new Excel.Workbook();
prompt.start();
var ic = 1;
wbc.xlsx.readFile('costumers.xlsx').then(function(){
shc = wbc.getWorksheet("Sheet1");
while (ic <= shc.rowCount){
console.log(shc.getRow(ic).getCell(1).value +" - "+ shc.getRow(ic).getCell(2).value);
ic++;
}
});
prompt.get(['costumer'], function (err, result) {
if (err) { return onErr(err); }
var costumer = shc.getRow(result.costumer).getCell(2).value;
wb.xlsx.readFile('check_'+costumer+'.xlsx').then(function(){
sh = wb.getWorksheet("Sheet1");
console.log(sh.getRow(2).getCell(3).value);
});
});
function onErr(err) {
console.log(err);
return 1;
}