JS String to Boolean

string-to-boolean.js

function stringToBoolean(str) {
  if (str === undefined) return false;
  switch (str.toLowerCase().trim()) {
    case 'true': case 'yes': case '1': return true;
    case 'false': case 'no': case '0': case null: return false;
    default: return Boolean(str);
  }
}

module.exports = stringToBoolean;

/* ExpressJS Example
// curl "http://localhost:3000/echo?bool=true"
// file ./routes/index.js
const express = require('express');
const router = express.Router();


router.get('/echo', async (req, res, next) => {
  const bool = stringToBoolean(req.query.bool);
  console.log('bool', bool);
  return res.json(bool);
});

module.exports = router;

function stringToBoolean(str) {
  if (str === undefined) return false;
  switch (str.toLowerCase().trim()) {
    case 'true': case 'yes': case '1': return true;
    case 'false': case 'no': case '0': case null: return false;
    default: return Boolean(str);
  }
}
*/