id: no-chained-type-assertions
valid:
  - 'const v = x as A'
  - 'const w = x as A as const'
  # 2026-08-20 (#1727/#1777): the `as unknown as` shape is delegated wholly to
  # require-safety-comment-for-as-unknown-as.yml. This rule owns the concrete
  # chain only, so BOTH the commented and the uncommented `unknown` forms are
  # valid here. Deleting the `not: { pattern: $X as unknown as $B }` guard reds
  # all three.
  - |
    // SAFETY: checked above
    const u = x as unknown as Foo;
  - 'const u = /* SAFETY: inline */ x as unknown as Foo;'
  - 'const u = x as unknown as Foo;'
invalid:
  - 'const v = x as A as B'
  - 'const v = foo.bar() as A as B;'
  # A concrete chain has no escape valve: a SAFETY comment does NOT excuse it.
  # Re-adding a comment-based exemption to this rule reds this case.
  - |
    // SAFETY: I promise
    const v = x as A as B;