Unfortunate parse error for duplicated comma

TypeScript Version: 2.7.0-dev.20171130

Code

declare function f(o: any): void;
const o = f({
    x: 0,,
});
o;

Expected behavior:

src/a.ts(3,10): error TS1136: Property assignment expected.

Actual behavior:

src/a.ts(3,10): error TS1136: Property assignment expected.
src/a.ts(4,1): error TS1135: Argument expression expected.
src/a.ts(4,2): error TS1128: Declaration or statement expected.
(and so on through the rest of the file)

It must be assuming I've moved on to the second argument of f despite not having closed the object.