Basic text cleansing to get rid of n dashes, weird whitespace and similar

deEvilize.js

const tests = [
  {"i": "", "o": ""},
  {"i": "abc ", "o": "abc"},
  {"i": " c", "o": "c"},
  {"i": "'x'", "o": "x"},
  {"i": "A–B", "o": "A-B"},
  {"i": "hmm;", "o": "hmm;"},
  {"i": "x  x", "o": "x x"},
  {"i": "abc'` '", "o": "abc"},
];
const specialTrouble = {
  ";": ";",
  "＿": "_",
};
const reg = new RegExp(Object.keys(specialTrouble).join("|"), "g");
function deEvilize(str = "") {
  // Miraculous! Simply the best! Up to the test when strings go wrong!
  // Replace tabs, multiple spaces, zero width spaces, non-breaking spaces, new lines etc, n space, m space etc. with a single regular space
  str = str.replace(/\s+/g, " ");
  // Trim leading, trailing whitespace, commas, stops or quotes
  str = str.replace(/[\s`'",.]+$/, "").replace(/^[\s`'",.]+/, "");
  // Replace all dashes with a normal hyphen https://www.fileformat.info/info/unicode/category/Pd/list.htm
  str = str.replace(/[‐‑‒–—―-﹣－֊]+/, "-");
  // Special trouble characters e.g. Greek question mark
  str = str.replace(reg, function(mat) {return specialTrouble[mat];});
  return str;
}
for (let t of tests) console.log(t.o, deEvilize(t.i), t.o===deEvilize(t.i));