How to import classes from another javascript file in DataviewJS?

[Michael_2024]

I have this code with a class in it:

console.log("calling linkedlist");

class NodeAcc {
    constructor(NodeName) {
        this._NodeName = NodeName;
        this.next = null;
    }

    // Getter & Settter for AccName
    get NodeName() {
        return this._NodeName;
    }
    set NodeName(_NodeName) {
        if (typeof _NodeName !== "string") throw new Error("AccName must be a string.");
        this._NodeName = _NodeName;
    }
};

class LinkedList {
    constructor() {
        this.head = null;
    }

    insertAtEnd(AccName) { // For adding new nodes
        const newNode = new NodeAcc(AccName);
        if (!this.head) {
            this.head = newNode;
            return;
        }
        let current = this.head;
        while (current.next !== null) {
            current = current.next;
        }
        current.next = newNode;
    }

    find(AccName) {
        let current = this.head;
        while (current !== null) {
            if (current.AccName === AccName) {
                return current;
            }
            current = current.next;
        }
        return null;
    }

    doesItExists(AccName) { // Same as "find" but returns booleans
        let current = this.head;
        while (current !== null) {
            if (current.AccName === AccName) {
                return true;
            }
            current = current.next;
        }
        return false;
    }

    printList() {
        let current = this.head;
        let i = 0;
        while (current !== null) {
            console.log(`[${i}] Account: ${current.AccName}, Value: ${current.Value}`);
            current = current.next;
            i++;
        }
    }

    forEach(callback) { // Going to make my LinkedList iterable in a forEach command.
        let current = this.head;
        let index = 0;
        while (current !== null) {
            callback(current, index);
            current = current.next;
            index++;
        }
    }
}

---

I want to reuse this script in other dataviewjs code blocks, how can I do that?

[Michael_2024]

This is supposed to be a linkedList class. It wouldn’t make sense to keep pasting this if I want to use the linkedList functionality. I want to reuse this script in other dataviewjs code blocks, how can I do that?

I heard about dv.view() but when I try to return a linkedList object in the function, it says promise.

[Michael_2024]

Here is what my javascript file with class looks like:

console.log("calling linkedlist");

class NodeAcc {
    constructor(NodeName) {
        this._NodeName = NodeName;
        this.next = null;
    }

    // Getter & Settter for AccName
    get NodeName() {
        return this._NodeName;
    }
    set NodeName(_NodeName) {
        if (typeof _NodeName !== "string") throw new Error("AccName must be a string.");
        this._NodeName = _NodeName;
    }
};

class LinkedList {
    constructor() {
        this.head = null;
    }

    insertAtEnd(AccName) { // For adding new nodes
        const newNode = new NodeAcc(AccName);
        if (!this.head) {
            this.head = newNode;
            return;
        }
        let current = this.head;
        while (current.next !== null) {
            current = current.next;
        }
        current.next = newNode;
    }

    find(AccName) {
        let current = this.head;
        while (current !== null) {
            if (current.AccName === AccName) {
                return current;
            }
            current = current.next;
        }
        return null;
    }

    doesItExists(AccName) { // Same as "find" but returns booleans
        let current = this.head;
        while (current !== null) {
            if (current.AccName === AccName) {
                return true;
            }
            current = current.next;
        }
        return false;
    }

    printList() {
        let current = this.head;
        let i = 0;
        while (current !== null) {
            console.log(`[${i}] Account: ${current.AccName}, Value: ${current.Value}`);
            current = current.next;
            i++;
        }
    }

    forEach(callback) { // Going to make my LinkedList iterable in a forEach command.
        let current = this.head;
        let index = 0;
        while (current !== null) {
            callback(current, index);
            current = current.next;
            index++;
        }
    }
}

exports.NodeAcc = NodeAcc;
exports.LinkedList = LinkedList;

This is how I use in a codeblock in a markdown note:

const { NodeAcc, LinkedList } = require(app.vault.adapter.basePath + "/03 RESOURCES/Javascripts/linkedList.js");

var myLinkedList = new LinkedList();
myLinkedList.insertAtEnd("Apple Pie");
myLinkedList.forEach(p => {
	dv.el("p", p.NodeName);
})

Thanks to this guy from another post: DataviewJs - Code reuse: common place for scripts - #6 by Craig