Function hasRedundantConnection

javascript/0684-redundant-connection.js:20–28

(graph, source, target, seen = new Set())

};

const hasRedundantConnection = (graph, source, target, seen = new Set()) => {
    if (seen.has(source)) return false;
    seen.add(source);

    const isEqual = source === target;
    if (isEqual) return true;

    return dfs(graph, source, target, seen);
};

const dfs = (graph, source, target, seen) => {
    for (const neighbor of graph[source]) {