graph-builder/markdown/graph-builder.graphconnections.addsuccessor.md

A graph builder library for modeling abstract graph structures.

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# GraphConnections.addSuccessor method

Add `node` as a successor to the origin node. In the case of an undirected graph, it also becomes a predecessor. Associates `value` with the edge connecting the two nodes. Returns the value previously associated with the edge connecting the two nodes.

**Signature:**
```javascript
addSuccessor(node: N, value: V): V | undefined;
```
**Returns:** `V | undefined`

## Parameters

|  Parameter | Type | Description |
|  --- | --- | --- |
|  `node` | `N` |  |
|  `value` | `V` |  |