TypeScript syntax highlighting wrong after decorator

[Ristaaf]

When adding a decorator to a variable declaration i TypeScript, both public/private and the name of the variable is plain white, while if removing the decorator both are colored correctly.

[aeschli]

Reproduced with

class MyClass {
    @enumerable(false)
    private get prop() {
        return true;
    }
}

Filed against TypeScript as microsoft/TypeScript#5753.
Please add your example as well, directly in the issue