diff --git a/js/src/alert.js b/js/src/alert.js
index 95eec5331f0ded0c675e69ed38cb8ee03a909a5a..03922e94c3a48bd634a3b507e1f5ec69d7ebc5b1 100644
--- a/js/src/alert.js
+++ b/js/src/alert.js
@@ -100,8 +100,7 @@ class Alert {
 
     const transitionDuration = getTransitionDurationFromElement(element)
 
-    EventHandler
-      .one(element, TRANSITION_END, () => this._destroyElement(element))
+    EventHandler.one(element, TRANSITION_END, () => this._destroyElement(element))
     emulateTransitionEnd(element, transitionDuration)
   }
 
diff --git a/js/src/dom/event-handler.js b/js/src/dom/event-handler.js
index 82262fa5a8690211a198cbe0fc51d44f2aaf8a17..b76677858885bbf0395b308423c1f3667707c7c4 100644
--- a/js/src/dom/event-handler.js
+++ b/js/src/dom/event-handler.js
@@ -207,14 +207,13 @@ function removeHandler(element, events, typeEvent, handler, delegationSelector)
 function removeNamespacedHandlers(element, events, typeEvent, namespace) {
   const storeElementEvent = events[typeEvent] || {}
 
-  Object.keys(storeElementEvent)
-    .forEach(handlerKey => {
-      if (handlerKey.indexOf(namespace) > -1) {
-        const event = storeElementEvent[handlerKey]
+  Object.keys(storeElementEvent).forEach(handlerKey => {
+    if (handlerKey.indexOf(namespace) > -1) {
+      const event = storeElementEvent[handlerKey]
 
-        removeHandler(element, events, typeEvent, event.originalHandler, event.delegationSelector)
-      }
-    })
+      removeHandler(element, events, typeEvent, event.originalHandler, event.delegationSelector)
+    }
+  })
 }
 
 const EventHandler = {
@@ -247,23 +246,21 @@ const EventHandler = {
     }
 
     if (isNamespace) {
-      Object.keys(events)
-        .forEach(elementEvent => {
-          removeNamespacedHandlers(element, events, elementEvent, originalTypeEvent.slice(1))
-        })
+      Object.keys(events).forEach(elementEvent => {
+        removeNamespacedHandlers(element, events, elementEvent, originalTypeEvent.slice(1))
+      })
     }
 
     const storeElementEvent = events[typeEvent] || {}
-    Object.keys(storeElementEvent)
-      .forEach(keyHandlers => {
-        const handlerKey = keyHandlers.replace(stripUidRegex, '')
+    Object.keys(storeElementEvent).forEach(keyHandlers => {
+      const handlerKey = keyHandlers.replace(stripUidRegex, '')
 
-        if (!inNamespace || originalTypeEvent.indexOf(handlerKey) > -1) {
-          const event = storeElementEvent[keyHandlers]
+      if (!inNamespace || originalTypeEvent.indexOf(handlerKey) > -1) {
+        const event = storeElementEvent[keyHandlers]
 
-          removeHandler(element, events, typeEvent, event.originalHandler, event.delegationSelector)
-        }
-      })
+        removeHandler(element, events, typeEvent, event.originalHandler, event.delegationSelector)
+      }
+    })
   },
 
   trigger(element, event, args) {
@@ -300,16 +297,15 @@ const EventHandler = {
       })
     }
 
-    // merge custom informations in our event
+    // merge custom information in our event
     if (typeof args !== 'undefined') {
-      Object.keys(args)
-        .forEach(key => {
-          Object.defineProperty(evt, key, {
-            get() {
-              return args[key]
-            }
-          })
+      Object.keys(args).forEach(key => {
+        Object.defineProperty(evt, key, {
+          get() {
+            return args[key]
+          }
         })
+      })
     }
 
     if (defaultPrevented) {
diff --git a/js/src/dropdown.js b/js/src/dropdown.js
index 9653e32fa0086367efd553f27860022ff562e775..42137a1937cc971dbc2e64322443da30b17088b8 100644
--- a/js/src/dropdown.js
+++ b/js/src/dropdown.js
@@ -262,11 +262,7 @@ class Dropdown {
       ...config
     }
 
-    typeCheckConfig(
-      NAME,
-      config,
-      this.constructor.DefaultType
-    )
+    typeCheckConfig(NAME, config, this.constructor.DefaultType)
 
     return config
   }
diff --git a/js/src/toast.js b/js/src/toast.js
index 4d63e14b52638f15a36420857b9ae2d5aa065f34..623e8977147db063153930b0462a3007b02f3a21 100644
--- a/js/src/toast.js
+++ b/js/src/toast.js
@@ -172,11 +172,7 @@ class Toast {
       ...typeof config === 'object' && config ? config : {}
     }
 
-    typeCheckConfig(
-      NAME,
-      config,
-      this.constructor.DefaultType
-    )
+    typeCheckConfig(NAME, config, this.constructor.DefaultType)
 
     return config
   }
diff --git a/js/src/tooltip.js b/js/src/tooltip.js
index e0a5952991ec99d2b3c15a1077c716f5b03006d9..d76679a6a09ba207512d37fb9f7b8015f8d5f34f 100644
--- a/js/src/tooltip.js
+++ b/js/src/tooltip.js
@@ -708,11 +708,7 @@ class Tooltip {
       config.content = config.content.toString()
     }
 
-    typeCheckConfig(
-      NAME,
-      config,
-      this.constructor.DefaultType
-    )
+    typeCheckConfig(NAME, config, this.constructor.DefaultType)
 
     if (config.sanitize) {
       config.template = sanitizeHtml(config.template, config.whiteList, config.sanitizeFn)
diff --git a/js/src/util/index.js b/js/src/util/index.js
index 59efa6655dfcccf460df279e87b5935bb9f14aea..d9a975554c5c5c2a50ab01b6d27c5e1656f6e40a 100644
--- a/js/src/util/index.js
+++ b/js/src/util/index.js
@@ -110,21 +110,20 @@ const emulateTransitionEnd = (element, duration) => {
 }
 
 const typeCheckConfig = (componentName, config, configTypes) => {
-  Object.keys(configTypes)
-    .forEach(property => {
-      const expectedTypes = configTypes[property]
-      const value = config[property]
-      const valueType = value && isElement(value) ?
-        'element' :
-        toType(value)
-
-      if (!new RegExp(expectedTypes).test(valueType)) {
-        throw new Error(
-          `${componentName.toUpperCase()}: ` +
-          `Option "${property}" provided type "${valueType}" ` +
-          `but expected type "${expectedTypes}".`)
-      }
-    })
+  Object.keys(configTypes).forEach(property => {
+    const expectedTypes = configTypes[property]
+    const value = config[property]
+    const valueType = value && isElement(value) ?
+      'element' :
+      toType(value)
+
+    if (!new RegExp(expectedTypes).test(valueType)) {
+      throw new Error(
+        `${componentName.toUpperCase()}: ` +
+        `Option "${property}" provided type "${valueType}" ` +
+        `but expected type "${expectedTypes}".`)
+    }
+  })
 }
 
 const isVisible = element => {