refactor(core): rename core pkg dir to core

packages/core/src/composables/useEdge.ts

@@ -0,0 +1,29 @@
+import useVueFlow from './useVueFlow'
+import { EdgeId, EdgeRef } from '~/context'
+import type { CustomEvent, ElementData } from '~/types'
+
+/**
+ * Access an edge
+ *
+ * If no edge id is provided, the edge id is injected from context
+ *
+ * Meaning if you do not provide an id, this composable has to be called in a child of your custom edge component, or it will throw
+ */
+export default function useEdge<Data = ElementData, CustomEvents extends Record<string, CustomEvent> = any>(id?: string) {
+  const edgeId = id ?? inject(EdgeId, '')
+  const edgeEl = inject(EdgeRef, null)
+
+  const { findEdge } = useVueFlow()
+
+  const edge = findEdge<Data, CustomEvents>(edgeId)
+
+  if (!edge) {
+    throw new Error(`[vue-flow]: useEdge - Edge with id ${edgeId} not found!`)
+  }
+
+  return {
+    id: edgeId,
+    edge,
+    edgeEl,
+  }
+}