chore: move utils

src-next/utils/dom/event.ts

@@ -0,0 +1,56 @@
+import { isServer } from '..';
+import { EventHandler } from '../types';
+
+// eslint-disable-next-line import/no-mutable-exports
+export let supportsPassive = false;
+
+if (!isServer) {
+  try {
+    const opts = {};
+    Object.defineProperty(opts, 'passive', {
+      // eslint-disable-next-line getter-return
+      get() {
+        /* istanbul ignore next */
+        supportsPassive = true;
+      },
+    });
+    window.addEventListener('test-passive', null as any, opts);
+    // eslint-disable-next-line no-empty
+  } catch (e) {}
+}
+
+export function on(
+  target: EventTarget,
+  event: string,
+  handler: EventHandler,
+  passive = false
+) {
+  if (!isServer) {
+    target.addEventListener(
+      event,
+      handler,
+      supportsPassive ? { capture: false, passive } : false
+    );
+  }
+}
+
+export function off(target: EventTarget, event: string, handler: EventHandler) {
+  if (!isServer) {
+    target.removeEventListener(event, handler);
+  }
+}
+
+export function stopPropagation(event: Event) {
+  event.stopPropagation();
+}
+
+export function preventDefault(event: Event, isStopPropagation?: boolean) {
+  /* istanbul ignore else */
+  if (typeof event.cancelable !== 'boolean' || event.cancelable) {
+    event.preventDefault();
+  }
+
+  if (isStopPropagation) {
+    stopPropagation(event);
+  }
+}