From ef06039beb4a0f2c9cc23843a2d713bc8018696e Mon Sep 17 00:00:00 2001
From: CodewithEVILXD <126612139+CodewithEvilxd@users.noreply.github.com>
Date: Thu, 9 Oct 2025 14:26:06 +0530
Subject: [PATCH] feat: implement Object.defineProperty support and optimize
 regex generation

---
 README.md                                     |  2 +-
 .../CommonJsExportRequireDependency.js        | 17 +++++++++++-
 lib/util/compileBooleanMatcher.js             | 26 ++++++++++++++++++-
 3 files changed, 42 insertions(+), 3 deletions(-)

diff --git a/README.md b/README.md
index fc5b1ec7db7..c665eac1765 100644
--- a/README.md
+++ b/README.md
@@ -649,7 +649,7 @@ Before we started using OpenCollective, donations were made anonymously. Now tha
 
 <p>(In chronological order)</p>
 
-- [@google](https://github.com/google) for [Google Web Toolkit (GWT)](http://www.gwtproject.org/), which aims to compile Java to JavaScript. It features a similar [Code Splitting](http://www.gwtproject.org/doc/latest/DevGuideCodeSplitting.html) as webpack.
+- [@google](https://github.com/google) for [Google Web Toolkit (GWT)](http://www.gwtproject.org/), which aims to compile Java to JavaScript. It features a similar [Code Splitting](http://www.gwtproject.org/doc/latest/DevGuideCodeSplitting.html) to webpack.
 - [@medikoo](https://github.com/medikoo) for [modules-webmake](https://github.com/medikoo/modules-webmake), which is a similar project. webpack was born because of the desire for code splitting for modules such as Webmake. Interestingly, the [Code Splitting issue is still open](https://github.com/medikoo/modules-webmake/issues/7) (thanks also to @Phoscur for the discussion).
 - [@substack](https://github.com/substack) for [browserify](https://browserify.org/), which is a similar project and source for many ideas.
 - [@jrburke](https://github.com/jrburke) for [require.js](https://requirejs.org/), which is a similar project and source for many ideas.
diff --git a/lib/dependencies/CommonJsExportRequireDependency.js b/lib/dependencies/CommonJsExportRequireDependency.js
index 96b361a57e0..1f7e81a6735 100644
--- a/lib/dependencies/CommonJsExportRequireDependency.js
+++ b/lib/dependencies/CommonJsExportRequireDependency.js
@@ -400,7 +400,22 @@ CommonJsExportRequireDependency.Template = class CommonJsExportRequireDependency
 				);
 				return;
 			case "Object.defineProperty":
-				throw new Error("TODO");
+				if (!used) {
+					source.replace(
+						dep.range[0],
+						dep.range[1] - 1,
+						`/* unused reexport */ ${requireExpr}`
+					);
+					return;
+				}
+				source.replace(
+					dep.range[0],
+					dep.range[1] - 1,
+					`Object.defineProperty(${base}${propertyAccess(
+						used.slice(0, -1)
+					)}, ${JSON.stringify(used[used.length - 1])}, { value: ${requireExpr} })`
+				);
+				return;
 			default:
 				throw new Error("Unexpected type");
 		}
diff --git a/lib/util/compileBooleanMatcher.js b/lib/util/compileBooleanMatcher.js
index 4ca1b81ce79..b411caef750 100644
--- a/lib/util/compileBooleanMatcher.js
+++ b/lib/util/compileBooleanMatcher.js
@@ -147,8 +147,32 @@ const itemsToRegexp = (itemsArr) => {
 		}
 	}
 	// special case for only single char items
+	// optimize by using character ranges: e.g., [1-4a] instead of [1234a]
 	if (countOfSingleCharItems === itemsArr.length) {
-		return `[${quoteMeta(itemsArr.sort().join(""))}]`;
+		const sorted = itemsArr.sort();
+		const ranges = [];
+		let start = sorted[0];
+		let prev = sorted[0];
+		for (let i = 1; i < sorted.length; i++) {
+			const current = sorted[i];
+			if (current.charCodeAt(0) === prev.charCodeAt(0) + 1) {
+				prev = current;
+			} else {
+				if (start === prev) {
+					ranges.push(quoteMeta(start));
+				} else {
+					ranges.push(`${quoteMeta(start)}-${quoteMeta(prev)}`);
+				}
+				start = current;
+				prev = current;
+			}
+		}
+		if (start === prev) {
+			ranges.push(quoteMeta(start));
+		} else {
+			ranges.push(`${quoteMeta(start)}-${quoteMeta(prev)}`);
+		}
+		return `[${ranges.join("")}]`;
 	}
 	/** @type {Set<string>} */
 	const items = new Set(itemsArr.sort());