SSR temp workaround

tweak to #2596

Author: adumesny

doc/CHANGES.md

@@ -112,6 +112,7 @@ Change log
 * fix: [#2577](https://github.com/gridstack/gridstack.js/issues/2577) ui-resizable-s/-n style fix
 * fix: [#2576](https://github.com/gridstack/gridstack.js/issues/2576) column('none') now ignores layouts
 * fix: [#2560](https://github.com/gridstack/gridstack.js/issues/2560) nested grid fix (enter can call leave which can call enter again) - Thank you [v1talii-dev](https://github.com/v1talii-dev)
+* fix: [#2596](https://github.com/gridstack/gridstack.js/pull/2596) prevent SSR crash
 * doc: nested.htm now has nested create and drag&drop example - Thank you [fredericrous](https://github.com/fredericrous)
 
 ## 10.0.1 (2023-12-10)

src/gridstack.ts

@@ -94,9 +94,7 @@ export class GridStack {
    * let grid = document.querySelector('.grid-stack').gridstack;
    */
   public static init(options: GridStackOptions = {}, elOrString: GridStackElement = '.grid-stack'): GridStack {
-    if(typeof document === 'undefined') {
-      return null
-    }
+    if (typeof document === 'undefined') return null; // temp workaround SSR
     let el = GridStack.getGridElement(elOrString);
     if (!el) {
       if (typeof elOrString === 'string') {
@@ -124,9 +122,7 @@ export class GridStack {
    */
   public static initAll(options: GridStackOptions = {}, selector = '.grid-stack'): GridStack[] {
     let grids: GridStack[] = [];
-    if(typeof document === 'undefined') {
-      return grids
-    }
+    if (typeof document === 'undefined') return grids; // temp workaround SSR
     GridStack.getGridElements(selector).forEach(el => {
       if (!el.gridstack) {
         el.gridstack = new GridStack(el, Utils.cloneDeep(options));