query-string-single-element-array.es6

const queryString = require('query-string');

const result = queryString.stringify({ name: 'ahmed', items: [1] });
result;

const arrayFormat = queryString.stringify(
  { name: 'ahmed', items: [1] },
  { arrayFormat: 'bracket' }
);
arrayFormat;

const parsed = queryString.parse(result);
parsed;

console.log(queryString.stringify(parsed));

const parsedArrayFormat = queryString.parse(arrayFormat, {
  arrayFormat: 'bracket'
});
parsedArrayFormat;

/* empty array */
console.log(queryString.stringify({ items: [] }));
console.log(queryString.stringify({ items: [] }, { arrayFormat: 'bracket' }));