SyntaxError: Invalid regular expression

Error in browser, works in node/server.

Uncaught SyntaxError: Invalid regular expression: /^[Α-ώ]+$/i: Range out of order in character class

var alpha = {
  // 'el-GR': /^[Α-ώ]+$/i,
  // 'ja-JP': /^[ぁ-んァ-ヶｦ-ﾟ一-龠ー・。、]+$/i,
  // 'ko-KR': /^[ㄱ-ㅎㅏ-ㅣ가-힣]*$/,
};
var alphanumeric = {
  // 'el-GR': /^[0-9Α-ω]+$/i,
  // 'ja-JP': /^[0-9０-９ぁ-んァ-ヶｦ-ﾟ一-龠ー・。、]+$/i,
  // 'ko-KR': /^[0-9ㄱ-ㅎㅏ-ㅣ가-힣]*$/,
};

I don't know, tested on Linux Mint.

[balogun14]

@chuyeow can you explain this a bit more

[rudolfolah]

I ran into this issue when using Bun to generate JavaScript for the browser.

Possibly using the unicode character escape instead of the unicode character may fix this issue, I haven't tried that yet.

[meepen]

Adding <meta charset="utf-8" /> solves this, along with any other ways to set the html file's charset