Incorrect optional flag on Identifier

[vjeux]

What version of typescript-eslint-parser are you using?
b7220fd

What code were you trying to parse?

class X {
  private scanner? = undefined;
}

What did you expect to happen?

undefined not having optional: true

What happened?

{ type: 'Identifier',
  range: [ 47, 56 ],
  loc: { start: { line: 2, column: 23 }, end: { line: 2, column: 32 } },
  name: 'undefined',
  optional: true }

this makes prettier print is as

class SemicolonWalker {
  private scanner? = undefined?;
}

which isn't valid

[soda0289]

Good catch, thanks