fix linter errors

packages/tiptap-commands/src/commands/splitToDefaultListItem.js

@@ -32,8 +32,8 @@ index = $pos.index(d)
 // this is a copy of splitListItem
 // see https://github.com/ProseMirror/prosemirror-schema-list/blob/master/src/schema-list.js
 
-export default function splitListItem(itemType) {
-  return function _splitListItem(state, dispatch) {
+export default function splitToDefaultListItem(itemType) {
+  return function (state, dispatch) {
     const { $from, $to, node } = state.selection
     if ((node && node.isBlock) || $from.depth < 2 || !$from.sameParent($to)) return false
     const grandParent = $from.node(-1)

packages/tiptap/src/Utils/Emitter.js

@@ -16,9 +16,7 @@ export default class Emitter {
     const callbacks = this._callbacks[event]
 
     if (callbacks) {
-      for (const callback of callbacks) {
-        callback.apply(this, args)
-      }
+      callbacks.forEach(callback => callback.apply(this, args))
     }
 
     return this
@@ -46,7 +44,7 @@ export default class Emitter {
     }
 
     // remove specific handler
-    for (let i = 0; i < callbacks.length; i++) {
+    for (let i = 0; i < callbacks.length; i += 1) {
       const callback = callbacks[i]
       if (callback === fn) {
         callbacks.splice(i, 1)

packages/tiptap/src/Utils/camelCase.js

@@ -1,3 +1,3 @@
 export default function (str) {
-  return str.replace(/(?:^\w|[A-Z]|\b\w)/g, (word, index) => (index == 0 ? word.toLowerCase() : word.toUpperCase())).replace(/\s+/g, '')
+  return str.replace(/(?:^\w|[A-Z]|\b\w)/g, (word, index) => (index === 0 ? word.toLowerCase() : word.toUpperCase())).replace(/\s+/g, '')
 }