Function graph

graph(
    ...initialConnections: Readonly<
        {
            bidi?: boolean;
            from: string;
            to: string
            | string[];
            weight?: number;
        },
    >[],
): Readonly
Create a graph
```
let g = graph();
```
Can optionally provide initial connections:
```
let g = graph(
 { from: `a`, to: `b` },
 { from: `b`, to: `c` }
)
```
Parameters
- ...initialConnections: Readonly<
  { bidi?: boolean; from: string; to: string
  | string[]; weight?: number },
  >[]
Returns Readonly