browser-update with browserslist

console.log

{
  uc: '12.12',
  a: '100',
  c: '100',
  e: '100',
  f: '91',
  i: '11',
  ios: '12.2',
  o_a: '64',
  o: '82',
  s: '14.1',
  samsung: '15.0'
}
{
  uc: '12.12',
  c: '97',
  e: '98',
  f: '97',
  ios: '12.2',
  s: '14.1',
  samsung: '16.0'
}
{
  a: '100',
  c: '100',
  e: '100',
  f: '100',
  ios: '10.3',
  o_a: '64',
  o: '48',
  s: '10.1',
  samsung: '10.1'
}

getRequiredFromList.js

var browserslist = require("browserslist");

function getRequiredFromList(queries, opts) {
  var required = {},
    browserMap = [
      { bl: "edge", bu: "e" },
      { bl: "ie", bu: "i" },
      { bl: "chrome", bu: "c" },
      { bl: "firefox", bu: "f" },
      { bl: "opera", bu: "o" },
      { bl: "op_mob", bu: "o_a" },
      { bl: "safari", bu: "s" },
      //{ bl: "yandex", bu: "y" }, // not supported by browserslist
      //{ bl: "vivaldi", bu: "v" }, // not supported by browserslist
      { bl: "and_uc", bu: "uc" },
      { bl: "ios_saf", bu: "ios" },
      { bl: "android", bu: "a" },
      { bl: "samsung", bu: "samsung" },
    ];
  return (
    browserslist(queries, opts).forEach(function (listEntry) {
      var entrySplit = listEntry.split(" "),
        name = entrySplit[0],
        version = parseFloat(entrySplit[1].split('-')[0]),
        mapMatch = browserMap.find(function (mapEntry) {
          return mapEntry.bl === name;
        });
      mapMatch &&
        (!required[mapMatch.bu] || required[mapMatch.bu] > version) &&
        (required[mapMatch.bu] = version);
    }),
    required
  );
}

console.log(getRequiredFromList("defaults"));
console.log(getRequiredFromList("> 0.5%, not IE 11"));
console.log(getRequiredFromList("supports es6-module"));