From d230c4ae3b369b872098b7bcc08f2dbb424f98df Mon Sep 17 00:00:00 2001
From: XhmikosR <xhmikosr@gmail.com>
Date: Tue, 1 Dec 2020 20:57:29 +0200
Subject: [PATCH] Remove a few `null` strict checks

---
 js/src/alert.js    |  2 +-
 js/src/collapse.js |  4 ++--
 js/src/tab.js      |  2 +-
 js/src/tooltip.js  | 11 ++++++-----
 4 files changed, 10 insertions(+), 9 deletions(-)

diff --git a/js/src/alert.js b/js/src/alert.js
index 96eda4c5f..7bc3546e5 100644
--- a/js/src/alert.js
+++ b/js/src/alert.js
@@ -55,7 +55,7 @@ class Alert extends BaseComponent {
     const rootElement = element ? this._getRootElement(element) : this._element
     const customEvent = this._triggerCloseEvent(rootElement)
 
-    if (customEvent === null || customEvent.defaultPrevented) {
+    if (!customEvent || customEvent.defaultPrevented) {
       return
     }
 
diff --git a/js/src/collapse.js b/js/src/collapse.js
index 90bab0ec9..d29adeeb0 100644
--- a/js/src/collapse.js
+++ b/js/src/collapse.js
@@ -84,7 +84,7 @@ class Collapse extends BaseComponent {
       const filterElement = SelectorEngine.find(selector)
         .filter(foundElem => foundElem === element)
 
-      if (selector !== null && filterElement.length) {
+      if (selector && filterElement.length) {
         this._selector = selector
         this._triggerArray.push(elem)
       }
@@ -384,7 +384,7 @@ EventHandler.on(document, EVENT_CLICK_DATA_API, SELECTOR_DATA_TOGGLE, function (
     let config
     if (data) {
       // update parent attribute
-      if (data._parent === null && typeof triggerData.parent === 'string') {
+      if (data._parent && typeof triggerData.parent === 'string') {
         data._config.parent = triggerData.parent
         data._parent = data._getParent()
       }
diff --git a/js/src/tab.js b/js/src/tab.js
index f1b17ac79..5a3479863 100644
--- a/js/src/tab.js
+++ b/js/src/tab.js
@@ -91,7 +91,7 @@ class Tab extends BaseComponent {
       relatedTarget: previous
     })
 
-    if (showEvent.defaultPrevented || (hideEvent !== null && hideEvent.defaultPrevented)) {
+    if (showEvent.defaultPrevented || (hideEvent && hideEvent.defaultPrevented)) {
       return
     }
 
diff --git a/js/src/tooltip.js b/js/src/tooltip.js
index 103524b8b..cce16075c 100644
--- a/js/src/tooltip.js
+++ b/js/src/tooltip.js
@@ -248,9 +248,9 @@ class Tooltip extends BaseComponent {
     if (this.isWithContent() && this._isEnabled) {
       const showEvent = EventHandler.trigger(this._element, this.constructor.Event.SHOW)
       const shadowRoot = findShadowRoot(this._element)
-      const isInTheDom = shadowRoot === null ?
-        this._element.ownerDocument.documentElement.contains(this._element) :
-        shadowRoot.contains(this._element)
+      const isInTheDom = shadowRoot ?
+        shadowRoot.contains(this._element) :
+        this._element.ownerDocument.documentElement.contains(this._element)
 
       if (showEvent.defaultPrevented || !isInTheDom) {
         return
@@ -406,7 +406,7 @@ class Tooltip extends BaseComponent {
   }
 
   setElementContent(element, content) {
-    if (element === null) {
+    if (!element) {
       return
     }
 
@@ -734,7 +734,8 @@ class Tooltip extends BaseComponent {
   _cleanTipClass() {
     const tip = this.getTipElement()
     const tabClass = tip.getAttribute('class').match(BSCLS_PREFIX_REGEX)
-    if (tabClass !== null && tabClass.length > 0) {
+
+    if (tabClass && tabClass.length > 0) {
       tabClass.map(token => token.trim())
         .forEach(tClass => tip.classList.remove(tClass))
     }