Who faced the problem in platformio-ide-terminal?

Question

JavaScript

an empty terminal appears, with a blinking cursor, I can not configure it correctly. The version is the latest, it is impossible to add text to the terminal.

Answer 1

// why this zero?
To get not 3 minutes, but 03, someone "smart" came up with the idea of ​​​​adding a zero at the beginning, and then taking the last two characters.
Could it be replaced with x<10 ? '0' + x : x
// Like 3 first and 3 last elements of array d. What for?
well, like year.month.day hh:mm:ss
But better throw this garbage away and learn how to use Intl.DateTimeFormat

Answer 2

Learning simple debugging. We display the places of interest in the console:

function formatDate(date) {
  /* код без изменений */  
 
  let d = date;

  const dWithoutZeros = [
    d.getDate(),
    (d.getMonth() + 1),
    d.getFullYear(),
    d.getHours(),
    d.getMinutes()
  ];

  console.log('d[]: ', dWithoutZeros);

  d = [
    '0' + d.getDate(),
    '0' + (d.getMonth() + 1),
    '' + d.getFullYear(),
    '0' + d.getHours(),
    '0' + d.getMinutes()
  ];
  
  console.log('d[] with zeros: ', d);
  
  d = d.map(component => component.slice(-2));
  
  console.log('d[] sliced: ', d);
  
  const a = d.slice(0, 3).join('.');
  
  console.log('part a: ', a);
  
  const b = d.slice(3).join(':');
  
  console.log('part b: ', b);
  
  const result = a + ' ' + b;
  
  console.log('result: ', result);
  
  return result;
}

/* код без изменений */

Let's run it and see the output. All but one question is gone.
Open jsfiddle. We type:

console.log('case 1: ', new Date - 1);
console.log('case 2: ', new Date(new Date - 1));

Let's run it and see the output. We draw conclusions. Just in case , read MDN .
Congratulations, you've learned how to debug using the console, and also learned about the existence of MDN, and if you ever have similar questions, you now know how to answer them yourself.