LavaStore `Deno`

A flexible and scalable local database for the web

About

LavaStore is a flexible and scalable local database for web development. It uses a document-oriented data model to store persistent data safely with our built-in powerful storage structure. This is the latest version for the Deno runtime ported from NPM.

View the project on Deno.land or GitHub.

Featurs

Easy to learn
Intuitive data modeling structure inspired from Firestore (Firebase)
Simple and readable API

Third-party extensions

Query Language Support
- LavaStore QL *(official)
~~Asynchronous~~ (in-progress)

Usage

Documents contains sub-collections and fields (data), and Collections contains sub-documents.

Always start with creating a new LavaStore('my_store') class and give it a unique ID. The next step is to either setup a store document and collection structure using either the InsurePath() method, or chained Add() methods. Alternatively, use SetPath() if you already have data to store in a specific subdocument.

The image below is an example of an Firestore structure which is easily replicable locally using LavaStore.

Structure

Here, spotify is a document containing no data but a users collection, where user-related data might be stored between sessions.

Data model

The way we store data using LavaStore is heavily inspired by the Cloud Firestore data model.

Unlike a SQL database, there are no tables or rows. Instead, you store data in documents, which are organized into collections.

Each document contains a set of key-value pairs. Cloud Firestore is optimized for storing large collections of small documents.

All documents must be stored in collections. Documents can contain subcollections and nested objects, both of which can include primitive fields like strings or complex objects like lists.

Read more about structuring data and data modeling from the Firebase documentation.

Examples

The code below initializes a new LavaStore document root called app. When first running this code in the browser, we’ll see a empty object being logged, but after a reload it contains the data { value: "Test" }.

// TypeScript
import { LavaStore } from "https://deno.land/x/lavastore/mod.ts";

const AppDocument = new LavaStore("app");

console.log(AppDocument.Get());

AppDocument.Set({
    value: "Test"
});

The true power of

Specification

Description	Value
Package Size	24 kB
Semi-colons	~80

Public API

LavaStore

This is a regular LSDocument with the only exception that it strictly must be root of a Document/Collection tree.

LSDocument

class LSDocument {
    id: string;
    parent: LSCollection | undefined;
    Collection(id: string): LSCollection | undefined;
    Contains(id: string): boolean;
    Add(collection: LSCollection): void;
    Remove(id: string): void;
    InsurePath(path: string | string[]): void;
    Load(): void;
    Save(): void;
    Set(data: object): void;
    Get(): object;
    HasData(): boolean;
    SetPath(path: string | string[], data: object): void;
    GetPath(path: string | string[]): object;
    CollectionPath(path: string | string[]): LSCollection;
    DocumentPath(path: string | string[]): LSDocument;
    PassTo(callback: ((data: object) => any)): void;
}

LSCollection

class LSCollection {
    id: string;
    parent: LSDocument | undefined;
    Contains(id: string): boolean;
    Document(id: string): LSDocument | undefined;
    Add(document: LSDocument): void;
    Remove(id: string): void;
}

Want to help?

All help is very much appreciated! You can fork the repo right now and start building your own modified version right away, and if you happen to create something interesting and useful, don’t hesitate to file a pull request!

You can also help by supporting the project financially, all gifts are appreciated with great reverence and gratitude.

Developer: paypal.me/williamragstad

LavaStore Deno