Problems reported:

parser/error_recovery/issue_39058.crash:1:1: Expected a declaration, but got '{'.
{<[](
^

parser/error_recovery/issue_39058.crash:1:5: Can't find ')' to match '('.
{<[](
    ^

parser/error_recovery/issue_39058.crash:1:2: Can't find '>' to match '<'.
{<[](
 ^

parser/error_recovery/issue_39058.crash:1:1: Can't find '}' to match '{'.
{<[](
^

beginCompilationUnit({)
  beginMetadataStar({)
  endMetadataStar(0)
  beginTopLevelMember({)
    handleRecoverableError(Message[ExpectedDeclaration, Expected a declaration, but got '{'., null, {token: {}], {, {)
    beginBlock({, BlockKind(invalid))
      beginTypeArguments(<)
        handleIdentifier(, typeReference)
        handleNoTypeArguments([])
        handleType(, null)
      endTypeArguments(1, <, >)
      handleLiteralList(0, [, null, ])
      handleExpressionStatement(;)
    endBlock(1, {, }, BlockKind(invalid))
    handleInvalidTopLevelBlock({)
    handleInvalidTopLevelDeclaration(})
  endTopLevelDeclaration()
  handleErrorToken(UnmatchedToken(())
  handleRecoverableError(Message[UnmatchedToken, Can't find ')' to match '('., null, {string: ), token: (}], UnmatchedToken((), UnmatchedToken(())
  handleErrorToken(UnmatchedToken(<))
  handleRecoverableError(Message[UnmatchedToken, Can't find '>' to match '<'., null, {string: >, token: <}], UnmatchedToken(<), UnmatchedToken(<))
  handleErrorToken(UnmatchedToken({))
  handleRecoverableError(Message[UnmatchedToken, Can't find '}' to match '{'., null, {string: }, token: {}], UnmatchedToken({), UnmatchedToken({))
endCompilationUnit(1, )