There are a few corrections needed in the file en/regular-expression.md :

• Line 42:
  Correct syntax should be:
  const regex = /hello/gi;
  use gi for output ["Hello", "hello"]

• Line 18:
  The regular expression should follow the correct format:
  /pattern/flags

• Line 222:
  A console.log statement is missing:

  console.log(result); // Result: ["e", 2, "The best things in life ar..."]

Please verify and, if necessary, correct the corresponding sections in other language versions as well.