https://github.com/mozilla/pdf.js/blob/0df1a5661958df0c4ed2f73b0f3266d825c5c280/src/display/api.js#L710-L719
The return type signature `@returns {Promise<{num: number, gen: number}>}` is mismatched with its definition. (should be `@returns {Promise<number>}`)
createPDFNetworkStream = pdfNetworkStreamFactory;
}
/**
 * @typedef { Int8Array | Uint8Array | Uint8ClampedArray |
 *            Int16Array | Uint16Array |
 *            Int32Array | Uint32Array | Float32Array |
 *            Float64Array
 * } TypedArray
 */