From c54abf134690737b620ed67265dd817211041fd3 Mon Sep 17 00:00:00 2001
From: Richard Russell <2265225+rars@users.noreply.github.com>
Date: Mon, 15 Jun 2026 20:32:29 +0100
Subject: [PATCH] feat(diff-match-patch-ts): target es2022 and use TypeScript 6

---
 package-lock.json             |  8 ++++----
 package.json                  | 26 ++++++++++++++------------
 src/diff-match-patch.class.ts | 12 ++++++------
 tsconfig.json                 | 11 ++++++-----
 4 files changed, 30 insertions(+), 27 deletions(-)

diff --git a/package-lock.json b/package-lock.json
index b02ad6f..bc8e5c9 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -36,7 +36,7 @@
         "standard-version": "^9.3.2",
         "ts-loader": "^9.4.2",
         "ts-node": "^10.9.1",
-        "typescript": "~5.9.0",
+        "typescript": "~6.0.3",
         "typescript-eslint": "^8.7.0"
       }
     },
@@ -12903,9 +12903,9 @@
       "license": "MIT"
     },
     "node_modules/typescript": {
-      "version": "5.9.3",
-      "resolved": "https://registry.npmjs.org/typescript/-/typescript-5.9.3.tgz",
-      "integrity": "sha512-jl1vZzPDinLr9eUt3J/t7V6FgNEw9QjvBPdysz9KfQDD41fQrC2Y4vKQdiaUpFT4bXlb1RHhLpp8wtm6M5TgSw==",
+      "version": "6.0.3",
+      "resolved": "https://registry.npmjs.org/typescript/-/typescript-6.0.3.tgz",
+      "integrity": "sha512-y2TvuxSZPDyQakkFRPZHKFm+KKVqIisdg9/CZwm9ftvKXLP8NRWj38/ODjNbr43SsoXqNuAisEf1GdCxqWcdBw==",
       "dev": true,
       "license": "Apache-2.0",
       "bin": {
diff --git a/package.json b/package.json
index e130bc3..fc8b516 100644
--- a/package.json
+++ b/package.json
@@ -3,19 +3,21 @@
   "version": "1.0.0",
   "description": "Port of diff-match-patch to TypeScript.",
   "exports": {
-    "import": {
-      "types": "./index.d.ts",
-      "default": "./diff-match-patch-ts.mjs"
-    },
-    "require": {
-      "types": "./index.d.ts",
-      "default": "./diff-match-patch-ts.cjs"
+    ".": {
+      "import": {
+        "types": "./index.d.ts",
+        "default": "./diff-match-patch-ts.mjs"
+      },
+      "require": {
+        "types": "./index.d.ts",
+        "default": "./diff-match-patch-ts.cjs"
+      }
     }
   },
-  "main": "diff-match-patch-ts.cjs",
-  "module": "diff-match-patch-ts.mjs",
-  "browser": "diff-match-patch-ts.umd.js",
-  "types": "index.d.ts",
+  "main": "./diff-match-patch-ts.cjs",
+  "module": "./diff-match-patch-ts.mjs",
+  "browser": "./diff-match-patch-ts.umd.js",
+  "types": "./index.d.ts",
   "scripts": {
     "build": "rimraf dist && rollup -c rollup.config.mjs && copyfiles package.json README.md LICENSE.md dist",
     "test": "jest",
@@ -67,7 +69,7 @@
     "standard-version": "^9.3.2",
     "ts-loader": "^9.4.2",
     "ts-node": "^10.9.1",
-    "typescript": "~5.9.0",
+    "typescript": "~6.0.3",
     "typescript-eslint": "^8.7.0"
   },
   "config": {
diff --git a/src/diff-match-patch.class.ts b/src/diff-match-patch.class.ts
index abffb76..844aaa0 100644
--- a/src/diff-match-patch.class.ts
+++ b/src/diff-match-patch.class.ts
@@ -781,9 +781,9 @@ export class DiffMatchPatch {
           line = decodeURI(text[textPointer].substring(1));
         } catch (_ex) {
           // Malformed URI sequence.
-          // TODO: remove this lint suppression once _ex is added as cause after updating target to es2022
-          // eslint-disable-next-line preserve-caught-error
-          throw new Error('Illegal escape in patch_fromText: ' + line);
+          throw new Error('Illegal escape in patch_fromText: ' + line, {
+            cause: _ex,
+          });
         }
         if (sign === '-') {
           // Deletion.
@@ -1884,9 +1884,9 @@ export class DiffMatchPatch {
             diffs[diffsLength++] = [DiffOp.Insert, decodeURI(param)];
           } catch (_ex) {
             // Malformed URI sequence.
-            // TODO: remove this lint rule suppression once cause is added and target is es2022.
-            // eslint-disable-next-line preserve-caught-error
-            throw new Error('Illegal escape in diff_fromDelta: ' + param);
+            throw new Error('Illegal escape in diff_fromDelta: ' + param, {
+              cause: _ex,
+            });
           }
           break;
         }
diff --git a/tsconfig.json b/tsconfig.json
index b76d10c..245b40a 100644
--- a/tsconfig.json
+++ b/tsconfig.json
@@ -1,13 +1,14 @@
 {
   "compilerOptions": {
-    "target": "es6",
+    "rootDir": "./src",
+    "target": "es2022",
     "module": "esnext",
-    "moduleResolution": "node",
+    "moduleResolution": "bundler",
     "strict": true,
     "declaration": true,
+    "declarationMap": true,
     "outDir": "./dist",
-    "lib": ["es6"]
+    "lib": ["ES2022"]
   },
-  "include": ["src/**/*"],
-  "exclude": ["node_modules", "dist"]
+  "include": ["src/**/*"]
 }