Add Modernizr rule for Intl.Segmenter

Signed-off-by: Michael Telatynski <7t3chguy@gmail.com>

src/vector/index.ts

@@ -56,8 +56,7 @@ function checkBrowserFeatures(): boolean {
         return false;
     }
 
-    // Custom checks atop Modernizr because it doesn't have ES2018/ES2019 checks
-    // in it for some features we depend on.
+    // Custom checks atop Modernizr because it doesn't have modern checks in it for some features we depend on.
     // Modernizr requires rules to be lowercase with no punctuation.
     // ES2018: http://262.ecma-international.org/9.0/#sec-promise.prototype.finally
     window.Modernizr.addTest("promiseprototypefinally", () => typeof window.Promise?.prototype?.finally === "function");
@@ -70,6 +69,8 @@ function checkBrowserFeatures(): boolean {
     );
     // ES2019: http://262.ecma-international.org/10.0/#sec-object.fromentries
     window.Modernizr.addTest("objectfromentries", () => typeof window.Object?.fromEntries === "function");
+    // ES2024: https://402.ecma-international.org/9.0/#sec-intl.segmenter
+    window.Modernizr.addTest("intlsegmenter", () => typeof window.Intl?.Segmenter === "function");
 
     const featureList = Object.keys(window.Modernizr) as Array<keyof ModernizrStatic>;