tree d5ff2044bdfb56e41648b10f16f3e78eb726328f
parent d70a50ed1fdf23644cf59bde4992b09bbfbf2078
author Paul Berry <paulberry@google.com> 1518513272 -0800
committer Greg Lowe <greg@vis.net.nz> 1527992963 +1200

Avoid invocation of Object.

In Dart 2.0, it will become a compile-time error to try to perform a
function invocation on a variable whose static type is `Object` (see
https://github.com/dart-lang/sdk/issues/31509).  Since `value` is
changed inside the `if` block, it is not type promoted, so its type is
considered to be `Object`.  Therefore, to avoid a compile-time error,
we need to use an intermediate variable of type Function.