added nodeExtent to Svelte Flow and React Flow Provider

packages/svelte/src/lib/container/SvelteFlow/SvelteFlow.svelte

@@ -53,6 +53,7 @@
   export let onMoveEnd: $$Props['onMoveEnd'] = undefined;
   export let isValidConnection: $$Props['isValidConnection'] = undefined;
   export let translateExtent: $$Props['translateExtent'] = undefined;
+  export let nodeExtent: $$Props['nodeExtent'] = undefined;
   export let onlyRenderVisibleElements: $$Props['onlyRenderVisibleElements'] = undefined;
   export let panOnScrollMode: $$Props['panOnScrollMode'] = PanOnScrollMode.Free;
   export let preventScrolling: $$Props['preventScrolling'] = true;
@@ -102,7 +103,8 @@
         width,
         height,
         fitView,
-        nodeOrigin
+        nodeOrigin,
+        nodeExtent
       });
 
   onMount(() => {

packages/svelte/src/lib/container/SvelteFlow/types.ts

@@ -206,6 +206,12 @@ export type SvelteFlowProps = DOMAttributes<HTMLDivElement> & {
    * @example [[-1000, -10000], [1000, 1000]]
    */
   translateExtent?: CoordinateExtent;
+  /** By default the nodes can be placed anywhere. You can use this prop to set a boundary.
+   *
+   * The first pair of coordinates is the top left boundary and the second pair is the bottom right.
+   * @example [[-1000, -10000], [1000, 1000]]
+   */
+  nodeExtent?: CoordinateExtent;
   /** Disabling this prop will allow the user to scroll the page even when their pointer is over the flow.
    * @default true
    */