From the webpack user test:

// @filename: mod1.js
class K {
	values() {
	}
}
exports.K = K;
// @filename: test.js
const { K } = require("./mod1");
/** @type {K} */
let k;
k.values();

Expected behavior:

No error, and k: K

Actual behavior:

Error "'values' not found on 'typeof K'." and k: typeof K.

Note: doesn't happen with exports.K = class { values() {} }