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.
Object.assign(style, this.fill[$toStyle]());
    }
    if (this.corner.children.some(node => node.radius !== 0)) {
      const cornerStyles = this.corner.children.map(node => node[$toStyle]());
      if (cornerStyles.length === 2 || cornerStyles.length === 3) {
        const last = cornerStyles[cornerStyles.length - 1];
        for (let i = cornerStyles.length; i < 4; i++) {
          cornerStyles.push(last);
        }
      }
      style.borderRadius = cornerStyles.map(s => s.radius).join(" ");
    }
    switch (this.presence) {
      case "invisible":
      case "hidden":
        style.borderStyle = "";
        break;
      case "inactive":
        style.borderStyle = "none";
        break;
      default:
        style.borderStyle = edgeStyles.map(s => s.style).join(" ");
        break;
    }
    style.borderWidth = edgeStyles.map(s => s.width).join(" ");
    style.borderColor = edgeStyles.map(s => s.color).join(" ");
    return style;
  }
}
class Break extends XFAObject {