export new Foo() shouldn't parse

[zertosh]

Parses with babylon@16.4.1, but doesn't with acorn@4.0.3, esprima@3.1.1 or flow@0.36.0.

A few more examples:

export typeof foo;
export void 0;
export delete foo.bar;
export this.foo;

Seems like an issue with any unary operator.

[DrewML]

Another example: statements

export for (;;);
export while(foo);