Find css selectors in js file

findSelectors.js

'use strict';

const file = 'some_file.js';

const ignore = [
  'a',
  'input',
  'span',
  'td',
  'title',
  'img',
  'div',
  'body',
  'dd',
  'th',
  'tr',
  'br',
  'script',
  'p',
  'li',
  'selector',
  'h4',
  'b',
  'ul',
  'head',
  'style',
  'sub'
]; // etc

const fs = require('fs');
const lineReader = require('readline').createInterface({
  input: fs.createReadStream(file)
});

var selectors = [];

lineReader.on('line', line => {
  var match = line.match(/(?:\$|\.children|\.find|\.closest|\.next|\.prev)\s*?\(['"]([^\)]+)/g);
  if (match) {
    match.forEach(group => {
      var selector = (group.match(/(?:\$|\.children|\.find|\.closest|\.next|\.prev)\s*?\(([^\)]+)/) || [])[1];
      if (selector) {
        selector = selector.replace(/["']/g, '').trim();
        if (ignore.indexOf(selector) === -1 && selectors.indexOf(selector) === -1 && selector.indexOf('<') !== 0) {
          console.log(selector);
          selectors.push(selector);
        }
      }
    });
  }
});