Incorrect parsing breaks prettier

[vwong]

Version: 5.7.0 - 5.7.2

Starting with 5.7.0, this component

static const compare = (a: number, b: number): string => {
  if (a < b) {
    return "smaller";
  } else {
    return "larger";
  }
};

now gives an error with prettier:

[error]     > 1 | static const compare = (a: number, b: number): string => {
[error]         |       ^ Mismatched group. A ")" character was found when ">" was expected.
[error]       2 |   if (a < b) {
[error]       3 |     return "abc";
[error]       4 |   } else {

It was fine in 5.6.2.