fix: ctrl+a does not work on Windows in code block (#5692)

shared/utils/browser.ts

@@ -0,0 +1,52 @@
+const SSR = typeof window === "undefined";
+
+/**
+ * Returns true if the client is a touch device.
+ */
+export function isTouchDevice(): boolean {
+  if (SSR) {
+    return false;
+  }
+  return window.matchMedia?.("(hover: none) and (pointer: coarse)")?.matches;
+}
+
+/**
+ * Returns true if the client is running on a Mac.
+ */
+export function isMac(): boolean {
+  if (SSR) {
+    return false;
+  }
+  return window.navigator.platform === "MacIntel";
+}
+
+/**
+ * Returns true if the client is running on Windows.
+ */
+export function isWindows(): boolean {
+  if (SSR) {
+    return false;
+  }
+  return window.navigator.platform === "Win32";
+}
+
+let supportsPassive = false;
+
+try {
+  const opts = Object.defineProperty({}, "passive", {
+    get() {
+      supportsPassive = true;
+    },
+  });
+  // @ts-expect-error ts-migrate(2769) testPassive is not a real event
+  window.addEventListener("testPassive", null, opts);
+  // @ts-expect-error ts-migrate(2769) testPassive is not a real event
+  window.removeEventListener("testPassive", null, opts);
+} catch (e) {
+  // No-op
+}
+
+/**
+ * Returns true if the client supports passive event listeners
+ */
+export const supportsPassiveListener = supportsPassive;