extract copyNode

TODO.md

@@ -1,8 +1,8 @@
 # connected component
 
-clonePortRecord
+`clonePortRecord`
 
-clonePortEntry
+`clonePortEntry`
 
 `copyNode`
 

src/lang/net/copyConnectedComponent.ts

@@ -1,5 +1,6 @@
 import { Node } from "../node"
 import { Net } from "./Net"
+import { copyNode } from "./copyNode"
 import { findPortRecordOrFail } from "./findPortRecordOrFail"
 import { hasNode } from "./hasNode"
 
@@ -21,8 +22,3 @@ export function copyConnectedComponent(
     }
   }
 }
-
-export function copyNode(source: Net, target: Net, node: Node): void {
-  const portRecord = findPortRecordOrFail(source, node)
-  //
-}

src/lang/net/copyNode.ts

@@ -0,0 +1,8 @@
+import { Node } from "../node"
+import { Net } from "./Net"
+import { findPortRecordOrFail } from "./findPortRecordOrFail"
+
+export function copyNode(source: Net, target: Net, node: Node): void {
+  const portRecord = findPortRecordOrFail(source, node)
+  //
+}