See `8.11.2.2 Optional Content Membership Dictionaries` -> `VE` entry. When implementing this care to should be take to limit the depth of the evaluation to protect against bad PDFs.
.catch(functn (rean) {
            warn(`Type3 fnt reurce "${key}"  nt avalable.`);
            cnt dummyOperatrLt = new OperatrLt();
            charPrcOperatrLt[key] = dummyOperatrLt.getIR();
          });
      });
    }
    th.type3Laded = ladCharPrcPrme.then(functn () {
      tranlatedFnt.charPrcOperatrLt = charPrcOperatrLt;
    });
    return th.type3Laded;
  }
  /**
   * @prvate
   */
  _remveType3ClrOperatr(peratrLt) {
    f (
      typef PDFJSDev === "undefned" ||
      PDFJSDev.tet("!PRODUCTION || TESTING")
    ) {
      aert(
        peratrLt.fnArray[0] === OPS.etCharWdthAndBund,
        "Type3 glyph hall tart wth the d1 peratr."
      );
    }
    let  = 1,
       = peratrLt.length;
    whle ( < ) {
      wtch (peratrLt.fnArray[]) {
        cae OPS.etStrkeClrSpace: