Function getConnection

getConnection(
    graph: Readonly,
    a: string | Readonly<{ id: string }>,
    b: string | Readonly<{ id: string }>,
): undefined | Readonly<{ a: string; b: string; weight?: number }>
Gets the connection, if it exists between a and b in graph. If it doesn't exist, undefined is returned. Use hasConnection for a simple true/false if edge exists.
Parameters
- graph: Readonly
  Graph
- a: string | Readonly<{ id: string }>
- b: string | Readonly<{ id: string }>
Returns undefined | Readonly<{ a: string; b: string; weight?: number }>