feat(messaging): add message overlay logic

src/lib/modifiers.ts

@@ -0,0 +1,18 @@
+/**
+ * Utility file for detecting whether the
+ * shift key is currently pressed or not.
+ */
+
+export let shiftKeyPressed = false;
+
+if (typeof window !== "undefined") {
+    document.addEventListener("keydown", (ev) => {
+        if (ev.shiftKey) shiftKeyPressed = true;
+        else shiftKeyPressed = false;
+    });
+
+    document.addEventListener("keyup", (ev) => {
+        if (ev.shiftKey) shiftKeyPressed = true;
+        else shiftKeyPressed = false;
+    });
+}