From ce695e8062b412b0880084b60cbb4bb7ca75a24c Mon Sep 17 00:00:00 2001
From: ldm0 <ldm2993593805@163.com>
Date: Sun, 30 Aug 2026 10:19:16 +0800
Subject: [PATCH] fix(geometry): serialize DOMMatrix numbers like ECMAScript

---
 moli-geometry/src/lib.rs | 19 +++++++++++++++++++
 1 file changed, 19 insertions(+)

diff --git a/moli-geometry/src/lib.rs b/moli-geometry/src/lib.rs
index 192e699651..1fbc5b3ccd 100644
--- a/moli-geometry/src/lib.rs
+++ b/moli-geometry/src/lib.rs
@@ -81,6 +81,25 @@ mod tests {
         );
     }
 
+    #[test]
+    fn dom_matrix_text_uses_ecmascript_number_serialization() {
+        for (value, expected) in [
+            (1.0 / 300_000_000.0, "3.3333333333333334e-9"),
+            (f64::MAX, "1.7976931348623157e+308"),
+            (f64::MIN_POSITIVE * f64::EPSILON, "5e-324"),
+        ] {
+            let matrix = DomMatrixComponents {
+                m42: value,
+                ..DomMatrixComponents::identity()
+            };
+
+            assert_eq!(
+                matrix.dom_matrix_text_with_dimension(true).unwrap(),
+                format!("matrix(1, 0, 0, 1, 0, {expected})")
+            );
+        }
+    }
+
     #[test]
     fn inverse_handles_invertible_3d_matrix() {
         let matrix = DomMatrixComponents::identity()