How to get file name when overriding VS Code snippet-CodePudding

I'm trying to override the rfce snippet in VS code but I can't seem to be able to get the filename autofilled when there's a named file. Where the file is not saved(unnamed) it should just be NameOfComponent but if the file is saved(has a name), the snippet should name the component the same as the file name but without the extension. Here's what I have so far:

"React Component": {
  "prefix": "rfce",
  "body": [
    "import React, { useState, useEffect } from \"react\";",
    "",
    "const ${1:NameOfComponent} = () => {",
    "  return (",
    "    <>",
    "       ${2:<div>Hello World</div>}",
    "    </>",
    "  );",
    "};",
    "",
    "export default ${1:NameOfComponent};"
  ],
  "description": "React Component"
}

CodePudding user response：

Presumably you have found $TM_FILENAME_BASE from