private var with [Bindable]

This declaration:

```
[Bindable]
private var someVar: String;
```

js output is:

/** @export
* @private
* @type {string} */
com_something_SomeClass_somevar: {
/** @this {com.something.SomeClass} */
get: function() {
return this.com_SomeClass_somevar_;
},

makes compiler output this warning:

feb 02, 2019 10:49:20 AM com.google.javascript.jscomp.LoggerErrorManager println
ADVERTENCIA: /Users/carlosrovira/webapp/javascript/bin/js-debug/com/something/SomeClass.js:437: WARNING - Parse error. extra visibility tag
* @private
^

why is compiler warning about it? the output seems right to me

Thanks

Start with the generated com/something/SomeClass.js output and the compiler warning for the private [Bindable] declaration. Reproduce the warning from the shown ActionScript declaration, then inspect how the compiler emits the @export and @private annotations; done means the warning's cause is documented or corrected without breaking the generated accessor output.

Written by the indexing model from the issue text.