Mini parse em js

parse.js

const regexp = /(\w+?\:|[=><]{1,2}|\S+|\s+(AND|OR)\s+)/g;
const input = 'quantity:>10 AND type:(1,2,3) AND group:>=1 AND nome:"Gato"';

const results = input.match(regexp);

const data = [];

console.log(results);  //Debug

for (let i = 0, j = results.length; i < j; i++) {
  const current = results[i].trim();
  console.log(current); //debug

  if (current.indexOf(":") !== -1) {
    const item = current.split(":");
    data.push({ field: item[0], value: item[1] });
  } else {
    data[data.length - 1].sibling = current;
  }
}

console.log(JSON.stringify(data, " ", 4));

/*
[
    {
        "field": "quantity",
        "value": ">10",
        "sibling": "AND"
    },
    {
        "field": "type",
        "value": "(1,2,3)",
        "sibling": "AND"
    },
    {
        "field": "group",
        "value": ">=1",
        "sibling": "AND"
    },
    {
        "field": "nome",
        "value": "\"Gato\""
    }
]
*/