workflow底层UI库整合至项目，优化构建逻辑

easyflow-ui-admin/packages/tinyflow-ui/src/components/utils/useGetNodesFromSource.svelte.ts

@@ -0,0 +1,31 @@
+import {store} from '#store/stores.svelte';
+import type {Edge, Node} from '@xyflow/svelte';
+
+export const useGetNodesFromSource = () => {
+    const getEdgesBySource = (target: string, edges: Edge[]) => {
+        return edges.filter(
+            // 排除循环节点的子节点，否则在多层循环嵌套时不正确
+            (edge) => edge.source === target && edge.sourceHandle !== 'loop_handle'
+        );
+    };
+
+    const getNodesFromSource = (sourceNodeId: string) => {
+        const edges = store.getEdges();
+        const result: Node[] = [];
+
+        let edgesFromSource = getEdgesBySource(sourceNodeId, edges);
+        while (edgesFromSource.length > 0) {
+            const newEdgesFromSource: Edge[] = [];
+            edgesFromSource.forEach((edge) => {
+                result.push(store.getNode(edge.target)!);
+                newEdgesFromSource.push(...getEdgesBySource(edge.target, edges));
+            });
+            edgesFromSource = newEdgesFromSource;
+        }
+
+        return result;
+    };
+    return {
+        getNodesFromSource
+    };
+};