TypeScript: Fix specific union type breaks after opening parenthesis, but not before closing

[sosukesuzuki]

Fix #6303

Union types put with [](array), as, keyof, |, & breaks after opening parenthesis, but not before closing.

// Stable
const foo = [abc, def, ghi, jkl, mno, pqr, stu, vwx, yz] as (
  | string
  | undefined)[];

const foo: (
  | AAAAAAAAAAAAAAAAAAAAAA
  | BBBBBBBBBBBBBBBBBBBBBB
  | CCCCCCCCCCCCCCCCCCCCCC
  | DDDDDDDDDDDDDDDDDDDDDD)[] = [];

const foo: keyof (
  | AAAAAAAAAAAAAAAAAAAAAA
  | BBBBBBBBBBBBBBBBBBBBBB
  | CCCCCCCCCCCCCCCCCCCCCC
  | DDDDDDDDDDDDDDDDDDDDDD) = bar;

const foo:
  | foo
  | (
      | AAAAAAAAAAAAAAAAAAAAAA
      | BBBBBBBBBBBBBBBBBBBBBB
      | CCCCCCCCCCCCCCCCCCCCCC
      | DDDDDDDDDDDDDDDDDDDDDD) = bar;

const foo: foo &
  (
    | AAAAAAAAAAAAAAAAAAAAAA
    | BBBBBBBBBBBBBBBBBBBBBB
    | CCCCCCCCCCCCCCCCCCCCCC
    | DDDDDDDDDDDDDDDDDDDDDD) = bar;

// This pr
const foo = [abc, def, ghi, jkl, mno, pqr, stu, vwx, yz] as (
  | string
  | undefined
)[];

const foo: (
  | AAAAAAAAAAAAAAAAAAAAAA
  | BBBBBBBBBBBBBBBBBBBBBB
  | CCCCCCCCCCCCCCCCCCCCCC
  | DDDDDDDDDDDDDDDDDDDDDD
)[] = [];

const foo: keyof (
  | AAAAAAAAAAAAAAAAAAAAAA
  | BBBBBBBBBBBBBBBBBBBBBB
  | CCCCCCCCCCCCCCCCCCCCCC
  | DDDDDDDDDDDDDDDDDDDDDD
) = bar;

const foo:
  | foo
  | (
      | AAAAAAAAAAAAAAAAAAAAAA
      | BBBBBBBBBBBBBBBBBBBBBB
      | CCCCCCCCCCCCCCCCCCCCCC
      | DDDDDDDDDDDDDDDDDDDDDD
    ) = bar;

const foo: foo &
  (
    | AAAAAAAAAAAAAAAAAAAAAA
    | BBBBBBBBBBBBBBBBBBBBBB
    | CCCCCCCCCCCCCCCCCCCCCC
    | DDDDDDDDDDDDDDDDDDDDDD
  ) = bar;

• I’ve added tests to confirm my change works.
• (If changing the API or CLI) I’ve documented the changes I’ve made (in the docs/ directory)
• (If the change is user-facing) I’ve added my changes to the CHANGELOG.unreleased.md file following the template.
• I’ve read the contributing guidelines.

✨Try the playground for this PR✨

[alexander-akait]

/cc @sosukesuzuki can you rebase?

[sosukesuzuki]

@evilebottnawi I resolved conflicts.

[alexander-akait]

/cc @prettier/core

[alexander-akait]

@sosukesuzuki good job, thanks for PRs