Is there a way to let ESLint decide what files are relevant, rather than use the specified globs?

[NullVoxPopuli]

found this: https://github.com/mansona/lint-to-the-future-eslint/blob/main/index.js#L71

  const files = walkSync(cwd, {
    globs: ['**/*.js'],
    ignore: ignoreFile || ['node_modules/*'],
  });

in my own code / tests, I needed to add **/*.ts as well.
We also have the (maybe) upcoming *.gts and *gjs files -- which we can control via eslint plugin without the user having to do anything,
ref: https://github.com/ember-cli/eslint-plugin-ember/pull/1395/files#diff-92bbac9a308cd5fcf9db165841f2d90ce981baddcb2b1e26cfff170929af3bd1R15