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.
"topRight",
    ]);
    this.colSpan = getInteger({
      data: attributes.colSpan,
      defaultValue: 1,
      validate: n => n >= 1 || n === -1,
    });
    this.h = attributes.h ? getMeasurement(attributes.h) : "";
    this.hAlign = getStringOption(attributes.hAlign, [
      "left",
      "center",
      "justify",
      "justifyAll",
      "radix",
      "right",
    ]);
    this.id = attributes.id || "";
    this.locale = attributes.locale || "";
    this.maxH = getMeasurement(attributes.maxH, "0pt");
    this.maxW = getMeasurement(attributes.maxW, "0pt");
    this.minH = getMeasurement(attributes.minH, "0pt");
    this.minW = getMeasurement(attributes.minW, "0pt");
    this.name = attributes.name || "";
    this.presence = getStringOption(attributes.presence, [
      "visible",
      "hidden",
      "inactive",
      "invisible",
    ]);
    this.relevant = getRelevant(attributes.relevant);