# addPort

Canonical: https://docs.shumoku.dev/en/library/api/addPort
Language: en

@shumoku/core · 0.4.0 · function

# addPort

[Source](https://github.com/konoe-akitoshi/shumoku/blob/main/libs/@shumoku/core/src/layout/interaction.ts#L778)

Add an unnamed port to a node on the specified side. The port is appended to \`Node.ports\` (the data model) and to the resolved-port map (layout). Label stays empty — the renderer hides labelless ports' label rectangle, and the user can name it later from the detail panel.

```
addPort(nodeId: string, side: Side, nodes: Map<string, Node>, ports: Map<string, ResolvedPort>, _existingLinks: Link[]): { nodes: Map<string, Node>; portId: string; ports: Map<string, ResolvedPort> } | null
```

## Parameters

| Parameter | Type | Description | Default |
| --- | --- | --- | --- |
| `nodeId` | `string` | No additional description. | `—` |
| `side` | `Side` | No additional description. | `—` |
| `nodes` | `Map<string, Node>` | No additional description. | `—` |
| `ports` | `Map<string, ResolvedPort>` | No additional description. | `—` |
| `_existingLinks` | `Link[]` | No additional description. | `—` |

## Returns

```
{ nodes: Map<string, Node>; portId: string; ports: Map<string, ResolvedPort> } | null
```

[`libs/@shumoku/core/src/layout/interaction.ts:778`](https://github.com/konoe-akitoshi/shumoku/blob/main/libs/@shumoku/core/src/layout/interaction.ts#L778)