Later export causes `'T' is referenced directly or indirectly in its own type annotation`

TypeScript Version: 3.1.0-dev.20180914

Code

/** @typedef {{}} T */

/** @type {T} */
const T = JSON.parse("");

export class C extends T {}

Expected behavior:

Same error as if the class isn't exported: Type '{}' is not a constructor function type. at the extends clause.

Actual behavior:

src/a.js:4:7 - error TS2502: 'T' is referenced directly or indirectly in its own type annotation.