Cannot import properties from module.exports as types in JSDoc

TypeScript Version: 3.3.0-dev.20190118

Search Terms: jsdoc import module.exports has no exported member

Code

a.js

class A {}

module.exports = {A}

b.js

// @ts-check
class B {
	// In the JSDoc below, VSCode intellisense does not recognize parameter a as type A.
    // Instead it shows the error:
    //   Namespace '".../a".export=' has no exported member 'A'

	/**
	 * @param {import('./a').A} a
	 */
	constructor (a) {
		this.a = a
	}
}

Expected behavior
Parameter a of the constructor should be recognized as type A, which is accessible via the A property of module.exports from a.js.

Actual behavior
Intellisense reports the error: Namespace '".../a".export=' has no exported member 'A'.

Notes
@param {import('./a')} a does not give an error, but it resolves to type {A: typeof A} instead of A.

If a.js is modified with module.exports = A, then import('./a') resolves to A, however this restricts a.js to only exporting one type.

Start by running the a.js and b.js example with TypeScript's JSDoc checking enabled. Read the handling of import('./a') types and module.exports, then verify that the A property is recognized as the constructor parameter type without changing the single-export behavior. Done means the reported error is gone for this reproduction.