[Bug] CJK characters showing up as red invalid characters

[Universe (softmarshmallow)]

Reproducible in vscode.dev or in VS Code Desktop?

• Not reproducible in vscode.dev or VS Code Desktop

Reproducible in the monaco editor playground?

• Not reproducible in the monaco editor playground

Monaco Editor Playground Code

// The Monaco Editor can be easily created, given an
// empty container and an options literal.
// Two members of the literal are "value" and "language".
// The editor takes the full size of its container.

monaco.editor.create(document.getElementById('container'), {
	value: "function hello() {\n\talert('Hello world!');\n}",
	language: 'javascript'
});

이것은 한글 입니다.  // < ---- this line

Actual Behavior

The Korean character should be accepted. regard less to syntax.

Even if it is a valid syntax, it will still show up as red character. e.g. in jsx string <div>한글</div>

Expected Behavior

No response

Additional Context

[Remy Suen (rcjsuen)]

Universe (@softmarshmallow) It will not accept random Korean characters because the syntax is invalid. If you put it in a string it will not flag it as an error.

[Universe (softmarshmallow)]

Remy Suen (@rcjsuen) It also does not work in jsx/tsx Try tsx / jsx file with this content.

not working - <div>한글</div>
works (of-course) <div>{"한글"}</div>

[Remy Suen (rcjsuen)]

I don't think the Monaco Editor supports JSX out-of-the-box. See #264.

[Universe (softmarshmallow)]

Remy Suen (@rcjsuen) What about the part that CJK Characters displaying as a red char? How do I solve that part (regarding less to JSX)