From 50e6c95ef5d90961aedf7e1b173a50cc4018dbf8 Mon Sep 17 00:00:00 2001
From: Jake Wang <jake.wang@argonlabs.tech>
Date: Fri, 18 Sep 2026 18:14:11 -0400
Subject: [PATCH] fix: preserve ranges with no matching versions when
 simplifying

---
 ranges/simplify.js      |  4 ++++
 test/ranges/simplify.js | 10 ++++++++++
 2 files changed, 14 insertions(+)

diff --git a/ranges/simplify.js b/ranges/simplify.js
index 262732e6..2eb0e41e 100644
--- a/ranges/simplify.js
+++ b/ranges/simplify.js
@@ -29,6 +29,10 @@ module.exports = (versions, range, options) => {
     set.push([first, null])
   }
 
+  if (!set.length) {
+    return range
+  }
+
   const ranges = []
   for (const [min, max] of set) {
     if (min === max) {
diff --git a/test/ranges/simplify.js b/test/ranges/simplify.js
index eac6624a..a0d70c40 100644
--- a/test/ranges/simplify.js
+++ b/test/ranges/simplify.js
@@ -2,6 +2,7 @@
 
 const simplify = require('../../ranges/simplify.js')
 const Range = require('../../classes/range.js')
+const satisfies = require('../../functions/satisfies.js')
 const t = require('tap')
 const versions = [
   '1.0.0',
@@ -42,3 +43,12 @@ t.equal(simplify(versions, '>=3.0.0 <3.1.0'), '3.0.0')
 t.equal(simplify(versions, '3.0.0 || 3.1 || 3.2 || 3.3'), '>=3.0.0')
 t.equal(simplify(versions, '1 || 2 || 3'), '*')
 t.equal(simplify(versions, '2.1 || 2.2 || 2.3'), '2.1.0 - 2.3.1')
+
+t.test('ranges with no matching versions', t => {
+  for (const range of ['^4.0.0', new Range('^4.0.0'), '<0.0.0-0']) {
+    const simplified = simplify(versions, range)
+    t.equal(simplified, range, 'preserves the original range')
+    t.same(versions.filter(v => satisfies(v, simplified)), [], 'still matches no versions')
+  }
+  t.end()
+})