From c3a617fefdc831106374f6def2c350ca55c441d7 Mon Sep 17 00:00:00 2001
From: Dolan Miu <dolan_miu@hotmail.com>
Date: Fri, 31 Mar 2023 00:13:36 +0100
Subject: [PATCH 1/3] #2028 - Null check

---
 demo/89-template-document.ts          |  29 ++++++++++++++++++++++++++
 demo/assets/simple-template-3.docx    | Bin 0 -> 16452 bytes
 src/patcher/paragraph-split-inject.ts |   4 ++++
 3 files changed, 33 insertions(+)
 create mode 100644 demo/89-template-document.ts
 create mode 100644 demo/assets/simple-template-3.docx

diff --git a/demo/89-template-document.ts b/demo/89-template-document.ts
new file mode 100644
index 0000000000..1220a6a8f6
--- /dev/null
+++ b/demo/89-template-document.ts
@@ -0,0 +1,29 @@
+// Patch a document with patches
+// Import from 'docx' rather than '../build' if you install from npm
+import * as fs from "fs";
+import { IPatch, patchDocument, PatchType, TextRun } from "../src";
+
+export const font = "Trebuchet MS";
+export const getPatches = (fields: { [key: string]: string }) => {
+    const patches: { [key: string]: IPatch } = {};
+
+    for (const field in fields) {
+        patches[field] = {
+            type: PatchType.PARAGRAPH,
+            children: [new TextRun({ text: fields[field], font })],
+        };
+    }
+
+    return patches;
+};
+
+const patches = getPatches({
+    salutation: "Mr.",
+    "first-name": "John",
+});
+
+patchDocument(fs.readFileSync("demo/assets/simple-template-3.docx"), {
+    patches,
+}).then((doc) => {
+    fs.writeFileSync("My Document.docx", doc);
+});
diff --git a/demo/assets/simple-template-3.docx b/demo/assets/simple-template-3.docx
new file mode 100644
index 0000000000000000000000000000000000000000..8d8fa9aacfe5700030d91465fa8c7be52e9e29dd
GIT binary patch
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KLCQIQo&7%$_qf3T

literal 0
HcmV?d00001

diff --git a/src/patcher/paragraph-split-inject.ts b/src/patcher/paragraph-split-inject.ts
index a32cea407f..3cb3a9705d 100644
--- a/src/patcher/paragraph-split-inject.ts
+++ b/src/patcher/paragraph-split-inject.ts
@@ -8,6 +8,10 @@ export const findRunElementIndexWithToken = (paragraphElement: Element, token: s
             const textElement = (element.elements ?? []).filter((e) => e.type === "element" && e.name === "w:t");
 
             for (const text of textElement) {
+                if (!text.elements?.[0]) {
+                    continue;
+                }
+
                 if ((text.elements?.[0].text as string)?.includes(token)) {
                     return i;
                 }

From 10c866bdea248ee839aec7391f9715309a0c7e5b Mon Sep 17 00:00:00 2001
From: Dolan Miu <dolan_miu@hotmail.com>
Date: Fri, 31 Mar 2023 17:16:05 +0100
Subject: [PATCH 2/3] Add tests

---
 src/patcher/paragraph-split-inject.spec.ts | 23 ++++++++++++++++++++++
 1 file changed, 23 insertions(+)

diff --git a/src/patcher/paragraph-split-inject.spec.ts b/src/patcher/paragraph-split-inject.spec.ts
index 5228a88d2d..c0b8eec459 100644
--- a/src/patcher/paragraph-split-inject.spec.ts
+++ b/src/patcher/paragraph-split-inject.spec.ts
@@ -86,6 +86,29 @@ describe("paragraph-split-inject", () => {
                 ),
             ).to.throw();
         });
+
+        it("should continue if text run doesn't have text", () => {
+            const output = findRunElementIndexWithToken(
+                {
+                    name: "w:p",
+                    type: "element",
+                    elements: [
+                        {
+                            name: "w:r",
+                            type: "element",
+                            elements: [
+                                {
+                                    name: "w:t",
+                                    type: "element",
+                                },
+                            ],
+                        },
+                    ],
+                },
+                "hello",
+            );
+            expect(output).to.deep.equal(0);
+        });
     });
 
     describe("splitRunElement", () => {

From 03868107141a422ca41ad242c95d5f7c59dd581f Mon Sep 17 00:00:00 2001
From: Dolan Miu <dolan_miu@hotmail.com>
Date: Tue, 4 Apr 2023 22:21:01 +0100
Subject: [PATCH 3/3] Write tests and simplify logic

---
 demo/89-template-document.ts               |  2 +-
 src/patcher/paragraph-split-inject.spec.ts | 70 +++++++++++++++-------
 src/patcher/paragraph-split-inject.ts      |  2 +-
 3 files changed, 52 insertions(+), 22 deletions(-)

diff --git a/demo/89-template-document.ts b/demo/89-template-document.ts
index 1220a6a8f6..547c77404d 100644
--- a/demo/89-template-document.ts
+++ b/demo/89-template-document.ts
@@ -1,7 +1,7 @@
 // Patch a document with patches
 // Import from 'docx' rather than '../build' if you install from npm
 import * as fs from "fs";
-import { IPatch, patchDocument, PatchType, TextRun } from "../src";
+import { IPatch, patchDocument, PatchType, TextRun } from "../build";
 
 export const font = "Trebuchet MS";
 export const getPatches = (fields: { [key: string]: string }) => {
diff --git a/src/patcher/paragraph-split-inject.spec.ts b/src/patcher/paragraph-split-inject.spec.ts
index c0b8eec459..7b207ba82b 100644
--- a/src/patcher/paragraph-split-inject.spec.ts
+++ b/src/patcher/paragraph-split-inject.spec.ts
@@ -88,26 +88,56 @@ describe("paragraph-split-inject", () => {
         });
 
         it("should continue if text run doesn't have text", () => {
-            const output = findRunElementIndexWithToken(
-                {
-                    name: "w:p",
-                    type: "element",
-                    elements: [
-                        {
-                            name: "w:r",
-                            type: "element",
-                            elements: [
-                                {
-                                    name: "w:t",
-                                    type: "element",
-                                },
-                            ],
-                        },
-                    ],
-                },
-                "hello",
-            );
-            expect(output).to.deep.equal(0);
+            expect(() =>
+                findRunElementIndexWithToken(
+                    {
+                        name: "w:p",
+                        type: "element",
+                        elements: [
+                            {
+                                name: "w:r",
+                                type: "element",
+                                elements: [
+                                    {
+                                        name: "w:t",
+                                        type: "element",
+                                    },
+                                ],
+                            },
+                        ],
+                    },
+                    "hello",
+                ),
+            ).to.throw();
+        });
+
+        it("should continue if text run doesn't have text", () => {
+            expect(() =>
+                findRunElementIndexWithToken(
+                    {
+                        name: "w:p",
+                        type: "element",
+                        elements: [
+                            {
+                                name: "w:r",
+                                type: "element",
+                                elements: [
+                                    {
+                                        name: "w:t",
+                                        type: "element",
+                                        elements: [
+                                            {
+                                                type: "text",
+                                            },
+                                        ],
+                                    },
+                                ],
+                            },
+                        ],
+                    },
+                    "hello",
+                ),
+            ).to.throw();
         });
     });
 
diff --git a/src/patcher/paragraph-split-inject.ts b/src/patcher/paragraph-split-inject.ts
index 3cb3a9705d..d7485e4991 100644
--- a/src/patcher/paragraph-split-inject.ts
+++ b/src/patcher/paragraph-split-inject.ts
@@ -12,7 +12,7 @@ export const findRunElementIndexWithToken = (paragraphElement: Element, token: s
                     continue;
                 }
 
-                if ((text.elements?.[0].text as string)?.includes(token)) {
+                if ((text.elements[0].text as string)?.includes(token)) {
                     return i;
                 }
             }