dart:js

allowInterop<F extends Function> function

F allowInterop <F extends Function>(F f)

Implementation

F allowInterop<F extends Function>(F f) {
  if (JS('bool', 'typeof(#) == "function"', f)) {
    // Already supports interop, just use the existing function.
    return f;
  } else {
    return _convertDartFunctionFast(f);
  }
}