RegExp tag function with flags

flagged-re-tag.js

'use strict';

function re(strings, ...expressions) {
  const pattern = expressions.reduce(
    (acc, expr, i) => `${acc}${expr}${strings[i + 1]}`, strings[0]
  );
  return ([flags]) => new RegExp(pattern, flags);
}

console.log(re`^abc$``gu`);