Как сохранить результат выполнения функции в переменную?

let array = {
    1: {
        description: "...",
        sibling: ["2", "3"],
    },
    2: {
        description: "...",
        sibling: ["4"],
    },
    3: {
        description: "...",
        sibling: ["4"],
    },
    4: {
        description: "...",
        sibling: ["5"],
    },
    5: {
        description: "...",
        sibling: null,
    },
};

let path = [];
// let result = [];

function findPaths(array, a, b) {
    path.push(a);
    if (a == b) {
        console.log(path);
        // result.push(path);
    }
    for (let k in array[a]["sibling"]) {
        if (k !== null) {
            i = array[a]["sibling"][k];
            findPaths(array, i, b);
        }
    }
    path.pop();
}

findPaths(array, "1", "5");
//console.log(result);