bestMatch.js

bestMatch.js

// find in objects https://www.npmjs.com/package/q_
function _(o, qs) {
  const qa = qs.replace(/\[([0-9]*)]/gim, '.$1').split('.');
  return qa.reduce(function(prev, next) {
    if (!prev) return undefined;
    return prev[next];
  }, o);
}

function bestMatch(o, qs) {
  return qs.split('.').reduce((prev)=>{
    if(prev.found !== undefined) return prev;
    const found = _(o, prev.str);
    if (found) return {...prev, found};
    const str = prev.str.replace(/\.[^.]*$/, '');
    return {...prev, str}
  }, {str:qs, found:undefined})
}