chore: add changeset

.changeset/eight-pears-peel.md

@@ -0,0 +1,64 @@
+---
+'@vue-flow/core': patch
+---
+
+# What's changed?
+
+* Add `HandleConnectable` type
+* Update `connectable` prop of `Handle` to `HandleConnectable` type
+* Allow to specify if Handles are connectable
+  * any number of connections
+  * none
+  * single connection
+  * or a cb to determine whether the Handle is connectable
+
+Example: 
+```html
+<script lang="ts" setup>
+import { Handle, HandleConnectable } from '@vue-flow/core'  
+
+const handleConnectable: HandleConnectable = (node, connectedEdges) => {
+  console.log(node, connectedEdges)
+  return true
+}
+</script>
+<template>
+  <!-- single connection -->
+  <Handle type="target" position="left" connectable="single" />
+  <div>
+    Custom Node
+  </div>
+  <!-- cb -->
+  <Handle id="a" position="right" :connectable="handleConnectable" />
+</template>
+```
+
+* Update `node.connectable` prop to `HandleConnectable`
+
+For Example:
+```js
+const nodes = ref([
+  {
+    id: '1',
+    position: { x: 0, y: 0 },
+    connectable: 'single' // each handle is only connectable once (default node for example)
+  },
+  {
+    id: '2',
+    position: { x: 200, y: 0 },
+    connectable: (node, connectedEdges) => {
+      return true // will allow any number of connections
+    }
+  },
+  {
+    id: '3',
+    position: { x: 400, y: 0 },
+    connectable: true // will allow any number of connections
+  },
+  {
+    id: '4',
+    position: { x: 200, y: 0 },
+    connectable: false // will disable handles
+  }
+])
+```