Salsa cross TS-JS find all references does not work

[alexdima]

Testing #2218

producer.js:

/**
 * @param {number} one
 */
exports.hi = function(one) {
    return 5;
}

exports.ciao = 'ciao';

consumer.ts

import * as p from './producer';

class A {
    public something: boolean;
    public foo(): void {}
}

var x = p.ciao;

[egamma]

This issue was moved to microsoft/TypeScript#6647