FVLA Docs — Lumenexus Framework

What is FVLA?

Focus View Lumenexus Absolute (FVLA) is a JavaScript framework built around the Focus View engine — a browser-driven scaling system that replaces traditional layout guesswork with mathematical precision. Instead of wrestling with breakpoints, endless media queries, and fragile CSS overrides, FVLA lets you define a logical visual system that adapts smoothly across devices.

FVLA runs server-side while providing real-time visual feedback in the browser. That means you see changes instantly as you build — without bloated tooling or unnecessary abstraction layers. The result is a cleaner development flow and a more immersive user experience.

Designed by Nicholis Seeley, FVLA was built for developers who want precision and control without sacrificing performance. It does not replace your creativity — it removes structural resistance so you can focus on design logic instead of defensive CSS.

Server-Side Engine

Core logic runs on Cloudflare Workers. Your users get real-time responses with zero server management.

License-Gated

Engine access is verified via your FVLA license key. One key per tier, verified at runtime.

Zero Boilerplate

Skip unnecessary media queries and setup code. FVLA handles responsive scaling through mathematical precision, not conditional rules.

Real-Time Feedback

Visual changes propagate instantly to the browser, making design iteration fast and intuitive.

Presence Field System

FVLA tracks cursor velocity and proximity to calculate a live presence value — driving reactive glow, scale, and color shifts across any element.

Flow-Reactive Rendering

Movement speed and direction are computed server-side and fed back as normalized values, letting your UI breathe and respond naturally to how users interact.

What Problems Does FVLA Solve?

Modern front-end development is overloaded with repetition. Sound familiar?

Media query stacking that grows endlessly
Breakpoint micromanagement across every component
Text that scales unpredictably at edge widths
Layouts that collapse at sizes you didn't test
Boilerplate frameworks you barely use

FVLA eliminates that friction.

The Focus View engine calculates proportional scaling automatically. Text, spacing, and layout elements scale in harmony without requiring dozens of conditional rules. Instead of patching layout problems at different screen sizes, you define a coherent system once.

You stop firefighting responsiveness and start designing intentionally.

What Can FVLA Be Used For?

FVLA is built for developers who want precision and control without sacrificing performance. Because it removes dependency on heavy CSS frameworks, it works well for developers building their own systems — not just assembling templates.

It's ideal for:

Immersive landing pages
Interactive UI systems
Data dashboards
Experimental design interfaces
High-clarity content platforms
Framework foundations for custom engines

Immersive Landing Pages

FVLA's reactive engine enables landing pages that respond dynamically to user presence and interaction — creating scroll-driven animations, cursor-reactive elements, and fluid transitions that feel alive rather than scripted.

Interactive Product Showcases

Use FVLA to build product demo pages where 3D-style elements, glowing highlights, and real-time scaling create a premium feel that static CSS simply cannot achieve. Ideal for SaaS products, digital goods, and creative agencies.

Developer Portfolios

FVLA gives individual developers a toolkit to build standout portfolio sites with signature visual effects — presence fields, flow-reactive grids, and dynamic text scaling that demonstrates technical depth to potential clients and employers.

Web Applications & Dashboards

Integrate FVLA into existing React, Vue, or vanilla JS applications to layer in reactive UI behavior without replacing your existing stack. FVLA sits alongside your framework of choice, adding the visual engine layer independently.

Creative Agencies & Client Work

The 5-Pack and 10-Pack tiers are designed for agencies delivering FVLA-powered experiences to multiple clients. Each domain uses one license seat, allowing studios to build a repeatable, premium offering across their client portfolio.

How FVLA Works

At its core, FVLA introduces a scaling logic layer between the viewport and your layout. Instead of reacting to screen size with breakpoints, FVLA applies proportional scaling through the Focus View engine.

You define structure. FVLA handles dimensional logic.

This reduces code overhead and prevents layout fragmentation across devices. The system stays lightweight, modular, and transparent — no hidden layout magic, no rigid design systems forced on top of your work.

Why FVLA Is Different

Most frameworks attempt to simplify complexity by adding abstraction. FVLA takes the opposite approach.

FVLA simplifies complexity by removing it.

It is not a design system. It is not an opinionated component library. It is a precision tool for developers who already understand layout fundamentals and want to stop writing defensive CSS. The engine stays out of your way — giving you clean, composable behavior without dictating structure.

Installation

Install the FVLA npm package in your project:

npm install @lumenexus/fvla

FVLA requires Node.js 18+ and supports both ESM and CommonJS projects.

Requirements

Node.js 18 or higher
A valid FVLA license key (purchase at fvla-framework.pages.dev)
Internet connection for license verification at runtime

How To Use

After purchasing a license key from the homepage, initialize FVLA in your project using the init() function. This verifies your key against the Lumenexus license server and returns an engine object if valid.

Basic Initialization

import { init } from '@lumenexus/fvla';

const engine = await init('FVLA-XXXX-XXXX-XXXX');

console.log(engine.tier);    // 'single', 'five', 'ten', etc.
console.log(engine.uses);    // number of licensed domains
console.log(engine.isValid); // true

Verify Without Throwing

Use verify() if you want to check license validity without wrapping in a try/catch. Returns null if the key is invalid.

import { verify } from '@lumenexus/fvla';

const engine = await verify('FVLA-XXXX-XXXX-XXXX');

if (engine) {
    console.log('License valid:', engine.tier);
} else {
    console.log('Invalid or expired license');
}

Error Handling

try {
    const engine = await init('FVLA-XXXX-XXXX-XXXX');
    // engine is ready
} catch (err) {
    console.error(err.message);
    // 'FVLA: Invalid license key. Purchase at https://fvla-framework.pages.dev'
    // 'FVLA: Could not reach license server. Check your network connection.'
}

Engine Object

A successful init() call returns an FVLAEngine object with the following properties:

interface FVLAEngine {
    licenseKey: string;   // Your license key
    tier:       string;   // 'single' | 'five' | 'ten' | 'single-bundle' | ...
    uses:       number;   // Number of licensed production domains
    created:    string;   // ISO date string of license creation
    isValid:    boolean;  // Always true on successful init
}

License Tiers

All licenses are one-time purchases and include one year of updates. Choose the tier that fits your usage:

Tier	Includes	Domains	Price
Single License	FVLA engine	1	$19
5-Pack	FVLA engine	5	$75
10-Pack	FVLA engine	10	$129
Single Bundle	FVLA engine + FVGrid	1	$39
5-Pack Bundle	FVLA engine + FVGrid	5	$99
10-Pack Bundle	FVLA engine + FVGrid	10	$169

Need more domains or a custom enterprise arrangement? Contact us via the homepage for pricing on larger deployments.

FVLA Documentation