Updating on and off

lib/off.js

@@ -4,17 +4,23 @@ function off(selector, event) {
   if (Array.isArray(selector)) {
     selector.forEach((item) => off(item, event));
   }
-  if (!window._domassistevents || !window._domassistevents[`_${event}`]) {
-    return;
+  if (!window._domassistevents) {
+    window._domassistevents = {};
   }
 
   // only disable events that were registered with domassist.on,
   // don't de-register events that were registered by other libs:
   const data = window._domassistevents[`_${event}`];
+
+  if (!data) {
+    return;
+  }
+
   const el = find(selector);
+
   if (el.length) {
     el.forEach((item) => {
-      item.removeEventListener(event, data.cb, data.capture);
+      item.removeEventListener(event, data.cb, data.options);
     });
   }
 }

lib/on.js

@@ -1,41 +1,38 @@
 import find from './find';
 
-function on(selector, event, cb, capture = false) {
+function on(selector, event, cb, options) {
   if (Array.isArray(selector)) {
-    selector.forEach((item) => on(item, event, cb, capture));
+    selector.forEach((item) => on(item, event, cb, options));
     return;
   }
 
-  // scrolling events need the passive listener attached
-  // to satisfy SEO scrolling measurements:
-  if (['touchstart', 'touchmove', 'wheel', 'mousewheel', 'scroll'].indexOf(event) !== -1) {
-    if (capture === false) {
-      capture = { passive: true };
-    }
-    if (capture === true) {
-      capture = { passive: true, capture: true };
-    }
-    if (typeof capture === 'object') {
-      capture.passive = true;
-    }
+  let eventOptions = {};
+
+  if (typeof options === 'boolean') {
+    eventOptions.capture = options;
+  } else if (typeof options === 'object') {
+    eventOptions = { ...options };
   }
 
+  const data = {
+    cb,
+    options: eventOptions
+  };
+
   // _domassistevents keeps track of events we registered
   // with 'domassist.on' so they can be deregistered by
   // 'domassist.off' without affecting events registered
   // by other libraries:
   if (!window._domassistevents) {
     window._domassistevents = {};
   }
-  window._domassistevents[`_${event}`] = {
-    cb,
-    capture
-  };
 
+  window._domassistevents[`_${event}`] = data;
   const el = find(selector);
+
   if (el.length) {
     el.forEach((item) => {
-      item.addEventListener(event, cb, capture);
+      item.addEventListener(event, cb, eventOptions);
     });
   }
 }