swc/crates/swc_ecma_parser/tests/errors/issue-2834/input.js.swc-stderr

  x Unexpected token `(`. Expected yield, an identifier, [ or {
   ,-[$DIR/tests/errors/issue-2834/input.js:2:1]
 2 | ({ a: (b) }) => {};
 3 | for (const [(a)] of arr) {}
   :             ^
   `----

  x Not a pattern
   ,-[$DIR/tests/errors/issue-2834/input.js:1:1]
 1 | ([(a)]) => {};
   :   ^^^
 2 | ({ a: (b) }) => {};
   `----

  x Not a pattern
   ,-[$DIR/tests/errors/issue-2834/input.js:1:1]
 1 | ([(a)]) => {};
 2 | ({ a: (b) }) => {};
   :       ^^^
 3 | for (const [(a)] of arr) {}
   `----