An issue with parsing "NULL" relationship targets

[Max Rudnev]

Hi! 👋

Firstly, thanks for your work on this project! 🙂

Today I used patch-package to patch docx4js@3.2.20 for the project I'm working on.

Here is the diff that solved my problem:

diff --git a/node_modules/docx4js/lib/openxml/part.js b/node_modules/docx4js/lib/openxml/part.js
index c041ae5..a0d29d9 100644
--- a/node_modules/docx4js/lib/openxml/part.js
+++ b/node_modules/docx4js/lib/openxml/part.js
@@ -91,6 +91,7 @@ var Part = function () {
 		value: function getRel(id) {
 			var rel = this.rels("Relationship[Id=\"" + id + "\"]");
 			var target = rel.attr("Target");
+			if (target === 'NULL') return;
 			if (rel.attr("TargetMode") === 'External') return { url: target };
 
 			switch (rel.attr("Type").split("/").pop()) {
diff --git a/node_modules/docx4js/src/openxml/part.js b/node_modules/docx4js/src/openxml/part.js
index 1a1d690..a37a67d 100644
--- a/node_modules/docx4js/src/openxml/part.js
+++ b/node_modules/docx4js/src/openxml/part.js
@@ -63,6 +63,8 @@ export default class Part{
 	getRel(id){
 		var rel=this.rels(`Relationship[Id="${id}"]`)
 		var target=rel.attr("Target")
+		if(target==='NULL')
+			return;
 		if(rel.attr("TargetMode")==='External')
 			return {url:target}
 

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