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>}`)
if (
    typeof params.docBaseUrl !== "string" ||
    isDataScheme(params.docBaseUrl)
  ) {
    
    
    
    params.docBaseUrl = null;
  }
  if (!Number.isInteger(params.maxImageSize)) {
    params.maxImageSize = -1;
  }
  if (typeof params.isEvalSupported !== "boolean") {
    params.isEvalSupported = true;
  }
  if (typeof params.disableFontFace !== "boolean") {
    params.disableFontFace = apiCompatibilityParams.disableFontFace || false;
  }
  if (typeof params.ownerDocument === "undefined") {
    params.ownerDocument = globalThis.document;
  }
  if (typeof params.disableRange !== "boolean") {
    params.disableRange = false;
  }
  if (typeof params.disableStream !== "boolean") {
    params.disableStream = false;
  }
  if (typeof params.disableAutoFetch !== "boolean") {
    params.disableAutoFetch = false;
  }