FreeCodeCamp challenge: falsy bouncer

falsy bouncera FreeCodeCamp challenge

Remove all falsy values from an array.

Falsy values in JavaScript are false, null, 0, "", undefined, and NaN.

Here are some helpful links:

Boolean Objects
Array.prototype.filter()

function bouncer(arr) {
  // Don't show a false ID to this bouncer.
  // arr.filter(falsi);
    var result = arr.filter(falsi);
    console.log('RESULT => ', result);
    overlay(JSON.stringify(result));
    return result;
}

function falsi(value) {
  if (typeof(value) !== false || '' ||  null || 0 || undefined || NaN ) {
    return value;
  }
}