The following code is flagged as dead (since it's *replacing* rather than updating the existing Object):
https://github.com/mozilla/pdf.js/blob/4483cba72410027acf46630ebf252ae529704476/src/core/xfa/template.js#L2336-L2339
according to the alert in https://github.com/mozilla/pdf.js/security/code-scanning/103?query=ref%3Arefs%2Fheads%2Fmaster

Looking at the surrounding code, I can see a couple of possibilities here:
 1. This is indeed just dead code, which should be removed.
 2. The code should be moved up, and placed just *above* the previous block instead.
 3. There should be other, more invasive, changes made to this code...

/cc @calixteman Which solution is correct here?
Assuming it's either option 1 or 2, I can submit a patch to fix this.
this.use = attributes.use || "";
    this.usehref = attributes.usehref || "";
    this.wideNarrowRatio = getRatio(attributes.wideNarrowRatio);
    this.encrypt = null;
    this.extras = null;
  }
}
class Bind extends XFAObject {
  constructor(attributes) {
    super(TEMPLATE_NS_ID, "bind",  true);
    this.match = getStringOption(attributes.match, [
      "once",
      "dataRef",
      "global",
      "none",
    ]);
    this.ref = attributes.ref || "";
    this.picture = null;
  }
}
class BindItems extends XFAObject {
  constructor(attributes) {
    super(TEMPLATE_NS_ID, "bindItems");
    this.connection = attributes.connection || "";
    this.labelRef = attributes.labelRef || "";
    this.ref = attributes.ref || "";
    this.valueRef = attributes.valueRef || "";
  }
}
class Bookend extends XFAObject {