diff --git a/spec/gridstack-engine-spec.ts b/spec/gridstack-engine-spec.ts
index 8628f6d09..b5284c623 100644
--- a/spec/gridstack-engine-spec.ts
+++ b/spec/gridstack-engine-spec.ts
@@ -9,7 +9,7 @@ describe('gridstack engine', function() {
   let w: any = window;
 
   let findNode = function(engine, id) {
-    return engine.nodes.find(function(i) { return i.id === id; });
+    return engine.nodes.find((i) => i.id === id);
   };
 
   it('should exist setup function.', function() {
diff --git a/src/gridstack-dd.ts b/src/gridstack-dd.ts
index f48326cd2..efb1afc90 100644
--- a/src/gridstack-dd.ts
+++ b/src/gridstack-dd.ts
@@ -170,7 +170,7 @@ GridStack.prototype._setupAcceptWidget = function(): GridStack {
     })
     .on(this.el, 'dropout', (event, el: GridItemHTMLElement) => {
       let node = el.gridstackNode;
-      if (!node) { return; }
+      if (!node) return;
 
       // clear any added flag now that we are leaving #1484
       delete node._added;
@@ -195,7 +195,7 @@ GridStack.prototype._setupAcceptWidget = function(): GridStack {
       let node = el.gridstackNode;
       let wasAdded = !!this.placeholder.parentElement; // skip items not actually added to us because of constrains, but do cleanup #1419
       // ignore drop on ourself from ourself - dragend will handle the simple move instead
-      if (node && node.grid === this) { return false; }
+      if (node && node.grid === this) return false;
 
       this.placeholder.remove();
 
@@ -210,7 +210,7 @@ GridStack.prototype._setupAcceptWidget = function(): GridStack {
         oGrid._triggerRemoveEvent();
       }
 
-      if (!node) { return false; }
+      if (!node) return false;
 
       // use existing placeholder node as it's already in our list with drop location
       if (wasAdded) {
@@ -522,10 +522,10 @@ GridStack.prototype._prepareDragDropByNode = function(node: GridStackNode): Grid
  * @param val if true widget will be draggable.
  */
 GridStack.prototype.movable = function(els: GridStackElement, val: boolean): GridStack {
-  if (this.opts.staticGrid) { return this; } // can't move a static grid!
+  if (this.opts.staticGrid) return this; // can't move a static grid!
   GridStack.getElements(els).forEach(el => {
     let node = el.gridstackNode;
-    if (!node || node.locked) { return }
+    if (!node || node.locked) return;
     node.noMove = !(val || false);
     if (node.noMove) {
       GridStackDD.get().draggable(el, 'disable');
@@ -545,10 +545,10 @@ GridStack.prototype.movable = function(els: GridStackElement, val: boolean): Gri
  * @param val  if true widget will be resizable.
  */
 GridStack.prototype.resizable = function(els: GridStackElement, val: boolean): GridStack {
-  if (this.opts.staticGrid) { return this; } // can't resize a static grid!
+  if (this.opts.staticGrid) return this; // can't resize a static grid!
   GridStack.getElements(els).forEach(el => {
     let node = el.gridstackNode;
-    if (!node || node.locked) { return; }
+    if (!node || node.locked) return;
     node.noResize = !(val || false);
     if (node.noResize) {
       GridStackDD.get().resizable(el, 'disable');
diff --git a/src/gridstack-engine.ts b/src/gridstack-engine.ts
index cdf25ca7e..765c98863 100644
--- a/src/gridstack-engine.ts
+++ b/src/gridstack-engine.ts
@@ -82,7 +82,7 @@ export class GridStackEngine {
     }
     while (true) {
       let collisionNode = this.nodes.find( n => n !== node && Utils.isIntercepted(n, nn), {node: node, nn: nn});
-      if (!collisionNode) { return this }
+      if (!collisionNode) return this;
       let moved;
       if (collisionNode.locked) {
         // if colliding with a locked item, move ourself instead
@@ -92,7 +92,7 @@ export class GridStackEngine {
         moved = this.moveNode(collisionNode, collisionNode.x, node.y + node.h,
           collisionNode.w, collisionNode.h, true);
       }
-      if (!moved) { return this } // break inf loop if we couldn't move after all (ex: maxRow, fixed)
+      if (!moved) return this; // break inf loop if we couldn't move after all (ex: maxRow, fixed)
     }
   }
 
@@ -106,7 +106,7 @@ export class GridStackEngine {
 
   /** re-layout grid items to reclaim any empty space */
   public compact(): GridStackEngine {
-    if (this.nodes.length === 0) { return this }
+    if (this.nodes.length === 0) return this;
     this.batchUpdate();
     this._sortNodes();
     let copyNodes = this.nodes;
@@ -124,7 +124,7 @@ export class GridStackEngine {
 
   /** enable/disable floating widgets (default: `false`) See [example](http://gridstackjs.com/demo/float.html) */
   public set float(val: boolean) {
-    if (this._float === val) { return; }
+    if (this._float === val) return;
     this._float = val || false;
     if (!val) {
       this._packNodes();
@@ -165,7 +165,7 @@ export class GridStackEngine {
       });
     } else {
       this.nodes.forEach((n, i) => {
-        if (n.locked) { return this }
+        if (n.locked) return this;
         while (n.y > 0) {
           let newY = n.y - 1;
           let canBeMoved = i === 0;
@@ -284,7 +284,7 @@ export class GridStackEngine {
 
   /** @internal */
   private _notify(nodes?: GridStackNode | GridStackNode[], removeDOM = true): GridStackEngine {
-    if (this.batchMode) { return this }
+    if (this.batchMode) return this;
     nodes = (nodes === undefined ? [] : (Array.isArray(nodes) ? nodes : [nodes]) );
     let dirtyNodes = nodes.concat(this.getDirtyNodes());
     if (this.onChange) {
@@ -294,7 +294,7 @@ export class GridStackEngine {
   }
 
   public cleanNodes(): GridStackEngine {
-    if (this.batchMode) { return this }
+    if (this.batchMode) return this;
     this.nodes.forEach(n => { delete n._dirty; });
     return this;
   }
@@ -348,7 +348,7 @@ export class GridStackEngine {
 
   public removeAll(removeDOM = true): GridStackEngine {
     delete this._layouts;
-    if (this.nodes.length === 0) { return this }
+    if (this.nodes.length === 0) return this;
     if (removeDOM) {
       this.nodes.forEach(n => { n._id = null; }); // hint that node is being removed
     }
@@ -427,7 +427,7 @@ export class GridStackEngine {
   }
 
   public moveNode(node: GridStackNode, x: number, y: number, w?: number, h?: number, noPack?: boolean): GridStackNode {
-    if (node.locked) { return null; }
+    if (node.locked) return null;
     if (typeof x !== 'number') { x = node.x; }
     if (typeof y !== 'number') { y = node.y; }
     if (typeof w !== 'number') { w = node.w; }
@@ -544,7 +544,7 @@ export class GridStackEngine {
    * Note: items will never be outside of the current column boundaries. default (moveScale). Ignored for 1 column
    */
   public updateNodeWidths(oldColumn: number, column: number, nodes: GridStackNode[], layout: ColumnOptions = 'moveScale'): GridStackEngine {
-    if (!this.nodes.length || oldColumn === column) { return this }
+    if (!this.nodes.length || oldColumn === column) return this;
 
     // cache the current layout in case they want to go back (like 12 -> 1 -> 12) as it requires original data
     this.cacheLayout(this.nodes, oldColumn);
diff --git a/src/gridstack.ts b/src/gridstack.ts
index 1dd55a2e3..202ed1ba2 100644
--- a/src/gridstack.ts
+++ b/src/gridstack.ts
@@ -163,7 +163,7 @@ export class GridStack {
    * @param opt grids options used to initialize the grid, and list of children
    */
   public static addGrid(parent: HTMLElement, opt: GridStackOptions = {}): GridStack {
-    if (!parent) { return null; }
+    if (!parent) return null;
 
     // create the grid element
     let doc = document.implementation.createHTMLDocument();
@@ -621,7 +621,7 @@ export class GridStack {
    * Note: items will never be outside of the current column boundaries. default (moveScale). Ignored for 1 column
    */
   public column(column: number, layout: ColumnOptions = 'moveScale'): GridStack {
-    if (this.opts.column === column) { return this; }
+    if (this.opts.column === column) return this;
     let oldColumn = this.opts.column;
 
     // if we go into 1 column mode (which happens if we're sized less than minW unless disableOneColumnMode is on)
@@ -673,7 +673,7 @@ export class GridStack {
    * @param removeDOM if `false` grid and items HTML elements will not be removed from the DOM (Optional. Default `true`).
    */
   public destroy(removeDOM = true): GridStack {
-    if (!this.el) { return; } // prevent multiple calls
+    if (!this.el) return; // prevent multiple calls
     this._updateWindowResizeEvent(true);
     this.setStatic(true); // permanently removes DD
     if (!removeDOM) {
@@ -702,7 +702,7 @@ export class GridStack {
    *  grid.enableResize(false);
    */
   public disable(): GridStack {
-    if (this.opts.staticGrid) { return; }
+    if (this.opts.staticGrid) return;
     this.enableMove(false);
     this.enableResize(false);
     this._triggerEvent('disable');
@@ -718,7 +718,7 @@ export class GridStack {
    *  grid.enableResize(true);
    */
   public enable(): GridStack {
-    if (this.opts.staticGrid) { return; }
+    if (this.opts.staticGrid) return;
     this.enableMove(true);
     this.enableResize(true);
     this._triggerEvent('enable');
@@ -733,7 +733,7 @@ export class GridStack {
    * doEnable`s value by changing the disableDrag grid option (default: true).
    */
   public enableMove(doEnable: boolean, includeNewWidgets = true): GridStack {
-    if (this.opts.staticGrid) { return this; } // can't move a static grid!
+    if (this.opts.staticGrid) return this; // can't move a static grid!
     this.getGridItems().forEach(el => this.movable(el, doEnable));
     if (includeNewWidgets) {
       this.opts.disableDrag = !doEnable;
@@ -748,7 +748,7 @@ export class GridStack {
    * doEnable`s value by changing the disableResize grid option (default: true).
    */
   public enableResize(doEnable: boolean, includeNewWidgets = true): GridStack {
-    if (this.opts.staticGrid) { return this; } // can't size a static grid!
+    if (this.opts.staticGrid) return this; // can't size a static grid!
     this.getGridItems().forEach(el => this.resizable(el, doEnable));
     if (includeNewWidgets) {
       this.opts.disableResize = !doEnable;
@@ -978,7 +978,7 @@ export class GridStack {
    * @param val if true the grid become static.
    */
   public setStatic(val: boolean): GridStack {
-    if (this.opts.staticGrid === val) { return this; }
+    if (this.opts.staticGrid === val) return this;
     this.opts.staticGrid = val;
     this.engine.nodes.forEach(n => this._prepareDragDropByNode(n)); // either delete Drag&drop or initialize it
     this._setStaticClass();
@@ -1002,7 +1002,7 @@ export class GridStack {
     }
 
     GridStack.getElements(els).forEach(el => {
-      if (!el || !el.gridstackNode) { return; }
+      if (!el || !el.gridstackNode) return;
       let n = el.gridstackNode;
       let w = {...opt}; // make a copy we can modify in case they re-use it or multiple items
       delete w.autoPosition;
@@ -1111,7 +1111,7 @@ export class GridStack {
 
   /** @internal */
   private _triggerChangeEvent(): GridStack {
-    if (this.engine.batchMode) { return this; }
+    if (this.engine.batchMode) return this;
     let elements = this.engine.getDirtyNodes(true); // verify they really changed
     if (elements && elements.length) {
       if (!this._ignoreLayoutsNodeChange) {
@@ -1125,7 +1125,7 @@ export class GridStack {
 
   /** @internal */
   private _triggerAddEvent(): GridStack {
-    if (this.engine.batchMode) { return this }
+    if (this.engine.batchMode) return this;
     if (this.engine.addedNodes && this.engine.addedNodes.length > 0) {
       if (!this._ignoreLayoutsNodeChange) {
         this.engine.layoutsNodesChange(this.engine.addedNodes);
@@ -1140,7 +1140,7 @@ export class GridStack {
 
   /** @internal */
   public _triggerRemoveEvent(): GridStack {
-    if (this.engine.batchMode) { return this; }
+    if (this.engine.batchMode) return this;
     if (this.engine.removedNodes && this.engine.removedNodes.length > 0) {
       this._triggerEvent('removed', this.engine.removedNodes);
       this.engine.removedNodes = [];
@@ -1189,7 +1189,7 @@ export class GridStack {
       // insert style to parent (instead of 'head' by default) to support WebComponent
       let styleLocation = this.opts.styleInHead ? undefined : this.el.parentNode as HTMLElement;
       this._styles = Utils.createStylesheet(id, styleLocation);
-      if (!this._styles) { return this; }
+      if (!this._styles) return this;
       this._styles._id = id;
       this._styles._max = 0;
 
@@ -1231,7 +1231,7 @@ export class GridStack {
 
   /** @internal */
   private _updateContainerHeight(): GridStack {
-    if (!this.engine || this.engine.batchMode) { return this; }
+    if (!this.engine || this.engine.batchMode) return this;
     let row = this.getRow(); // checks for minRow already
     // check for css min height
     let cssMinHeight = parseInt(getComputedStyle(this.el)['min-height']);
@@ -1248,7 +1248,7 @@ export class GridStack {
     }
     let cellHeight = this.opts.cellHeight as number;
     let unit = this.opts.cellHeightUnit;
-    if (!cellHeight) { return this }
+    if (!cellHeight) return this;
     this.el.style.height = row * cellHeight + unit;
     return this;
   }
@@ -1338,7 +1338,7 @@ export class GridStack {
 
     // remove any key not found (null or false which is default)
     for (const key in node) {
-      if (!node.hasOwnProperty(key)) { return; }
+      if (!node.hasOwnProperty(key)) return;
       if (!node[key] && node[key] !== 0) { // 0 can be valid value (x,y only really)
         delete node[key];
       }
@@ -1379,12 +1379,12 @@ export class GridStack {
     }
 
     if (!this.opts.disableOneColumnMode && this.el.clientWidth <= this.opts.minWidth) {
-      if (this._oneColumnMode) { return this }
+      if (this._oneColumnMode) return this;
       this._oneColumnMode = true;
       this.column(1);
       this._resizeNestedGrids(this.el);
     } else {
-      if (!this._oneColumnMode) { return this }
+      if (!this._oneColumnMode) return this;
       delete this._oneColumnMode;
       this.column(this._prevColumn);
       this._resizeNestedGrids(this.el);
@@ -1497,25 +1497,25 @@ export class GridStack {
    * @param els widget or selector to modify.
    * @param val if true widget will be draggable.
    */
-  public movable(els: GridStackElement, val: boolean): GridStack { return this; }
+  public movable(els: GridStackElement, val: boolean): GridStack { return this }
   /**
    * Enables/Disables resizing. No-op for static grids.
    * @param els  widget or selector to modify
    * @param val  if true widget will be resizable.
    */
-  public resizable(els: GridStackElement, val: boolean): GridStack { return this; }
+  public resizable(els: GridStackElement, val: boolean): GridStack { return this }
   /** @internal called to add drag over support to support widgets */
-  public _setupAcceptWidget(): GridStack { return this; }
+  public _setupAcceptWidget(): GridStack { return this }
   /** @internal called to setup a trash drop zone if the user specifies it */
-  public _setupRemoveDrop(): GridStack { return this; }
+  public _setupRemoveDrop(): GridStack { return this }
   /** @internal */
-  public _setupRemovingTimeout(el: GridItemHTMLElement): GridStack { return this; }
+  public _setupRemovingTimeout(el: GridItemHTMLElement): GridStack { return this }
   /** @internal */
-  public _clearRemovingTimeout(el: GridItemHTMLElement): GridStack { return this; }
+  public _clearRemovingTimeout(el: GridItemHTMLElement): GridStack { return this }
   /** @internal call to setup dragging in from the outside (say toolbar), with options */
   public _setupDragIn():  GridStack {return this; }
   /** @internal prepares the element for drag&drop **/
-  public _prepareDragDropByNode(node: GridStackNode): GridStack { return this; }
+  public _prepareDragDropByNode(node: GridStackNode): GridStack { return this }
 
   // 2.x API that just calls the new and better update() - keep those around for backward compat only...
   /** @internal */
diff --git a/src/h5/dd-base-impl.ts b/src/h5/dd-base-impl.ts
index 43e46059c..9af36259a 100644
--- a/src/h5/dd-base-impl.ts
+++ b/src/h5/dd-base-impl.ts
@@ -38,7 +38,7 @@ export abstract class DDBaseImplement {
   }
 
   public triggerEvent(eventName: string, event: Event): boolean|void {
-    if (this.disabled) { return; }
+    if (this.disabled) return;
     if (!this._eventRegister) {return; } // used when destroy before triggerEvent fire
     if (this._eventRegister[eventName]) {
       return this._eventRegister[eventName](event);
diff --git a/src/h5/dd-droppable.ts b/src/h5/dd-droppable.ts
index bd5479a1b..b2cf79cb2 100644
--- a/src/h5/dd-droppable.ts
+++ b/src/h5/dd-droppable.ts
@@ -50,14 +50,14 @@ export class DDDroppable extends DDBaseImplement implements HTMLElementExtendOpt
   }
 
   public enable(): void {
-    if (!this.disabled) { return; }
+    if (!this.disabled) return;
     super.enable();
     this.el.classList.remove('ui-droppable-disabled');
     this.el.addEventListener('dragenter', this._dragEnter);
   }
 
   public disable(): void {
-    if (this.disabled) { return; }
+    if (this.disabled) return;
     super.disable();
     this.el.classList.add('ui-droppable-disabled');
     this.el.removeEventListener('dragenter', this._dragEnter);
@@ -107,7 +107,7 @@ export class DDDroppable extends DDBaseImplement implements HTMLElementExtendOpt
 
   /** @internal called when the item is leaving our area, stop tracking if we had acceptable item */
   private _dragLeave(event: DragEvent): void {
-    if (this.el.contains(event.relatedTarget as HTMLElement)) { return; }
+    if (this.el.contains(event.relatedTarget as HTMLElement)) return;
     this._removeLeaveCallbacks();
     if (this.acceptable) {
       event.preventDefault();
@@ -121,7 +121,7 @@ export class DDDroppable extends DDBaseImplement implements HTMLElementExtendOpt
 
   /** @internal item is being dropped on us - call the client drop event */
   private _drop(event: DragEvent): void {
-    if (!this.acceptable) { return; } // should not have received event...
+    if (!this.acceptable) return; // should not have received event...
     event.preventDefault();
     const ev = DDUtils.initEvent<DragEvent>(event, { target: this.el, type: 'drop' });
     if (this.option.drop) {
diff --git a/src/h5/gridstack-dd-native.ts b/src/h5/gridstack-dd-native.ts
index 615305d47..1d295a209 100644
--- a/src/h5/gridstack-dd-native.ts
+++ b/src/h5/gridstack-dd-native.ts
@@ -133,7 +133,7 @@ export class GridStackDDNative extends GridStackDD {
   /** @internal returns a list of DD elements, creating them on the fly by default */
   private _getDDElements(els: GridStackElement, create = true): DDElement[] {
     let hosts = Utils.getElements(els) as DDElementHost[];
-    if (!hosts.length) { return []; }
+    if (!hosts.length) return [];
     let list = hosts.map(e => e.ddElement || (create ? DDElement.init(e) : null));
     if (!create) { list.filter(d => d); } // remove nulls
     return list;
diff --git a/src/utils.ts b/src/utils.ts
index 81da00fc6..0bc9b10fe 100644
--- a/src/utils.ts
+++ b/src/utils.ts
@@ -72,7 +72,7 @@ export class Utils {
   /** convert a potential selector into actual single element */
   static getElement(els: GridStackElement): HTMLElement {
     if (typeof els === 'string') {
-      if (!els.length) { return null}
+      if (!els.length) return null;
       if (els[0] === '#') {
         return document.getElementById(els.substring(1));
       }
@@ -198,7 +198,7 @@ export class Utils {
 
     sources.forEach(source => {
       for (const key in source) {
-        if (!source.hasOwnProperty(key)) { return; }
+        if (!source.hasOwnProperty(key)) return;
         if (target[key] === null || target[key] === undefined) {
           target[key] = source[key];
         } else if (typeof source[key] === 'object' && typeof target[key] === 'object') {
@@ -213,12 +213,12 @@ export class Utils {
 
   /** given 2 objects return true if they have the same values. Checks for Object {} having same fields and values (just 1 level down) */
   static same(a: unknown, b: unknown): boolean {
-    if (typeof a !== 'object')  { return a == b; }
-    if (typeof a !== typeof b) { return false; }
+    if (typeof a !== 'object')  return a == b;
+    if (typeof a !== typeof b) return false;
     // else we have object, check just 1 level deep for being same things...
-    if (Object.keys(a).length !== Object.keys(b).length) { return false; }
+    if (Object.keys(a).length !== Object.keys(b).length) return false;
     for (const key in a) {
-      if (a[key] !== b[key]) { return false; }
+      if (a[key] !== b[key]) return false;
     }
     return true;
   }