Recursive Parent-Child Walker

walker.ts

import Cryptography from "crypto";

/***
 * @example
 * void (async () => {
 *     const parent = new Abstract("root");
 *
 *     const child = new Abstract("child-1", parent);
 *
 *     new Abstract("child-3", child);
 *
 *     new Abstract("child-2", parent);
 *
 *     console.log(parent.walk());
 *
 *     for (const walker of parent.walk()) {
 *         console.log(walker.json);
 *     }
 * })();
 */
class Abstract {
    private id: string;
    private uuid = () => Cryptography.randomUUID({ disableEntropyCache: true });

    constructor(readonly name: string, readonly parent: Abstract | null = null, readonly children: Abstract[] | null = null) {
        this.id = this.uuid();

        (name) && Reflect.set(this, "name", name);
        (parent) && Reflect.set(this, "parent", parent.id);

        (parent) && ((parent.children) && parent.children.push(this) || Reflect.set(parent, "children", [ this ]));

        (this.name) && Reflect.set(this, Symbol.for(this.name), this);
    }

    get json() {
        return JSON.stringify(this, null, 4);
    }

    walk() {
        if (!(Reflect.get(this.walk, "children"))) {
            Reflect.set(this.walk, "children", []);
        }

        const children: Abstract[] = Reflect.get(this.walk, "children");

        (this.children) && (() => {
            for (const child of this.children) {
                children.push(child);

                child.walk();
            }

            Reflect.set(this.walk, "children", children);
        })();

        const data = Array.from([this, ... Reflect.get(this.walk, "children") as Abstract[]]);

        Reflect.set(this.walk, "children", null);

        return data;
    }
}

void (async () => {
    const parent = new Abstract("root");

    const child = new Abstract("child-1", parent);

    new Abstract("child-3", child);

    new Abstract("child-2", parent);

    console.log(parent.walk());

    for (const walker of parent.walk()) {
        console.log(walker.json);
    }

    console.log(parent.walk());
})();