@qdev.app/abd-core

Framework-free engine for the Advanced Browser Detector — identify the real browser behind a spoofed or shared User-Agent (Brave/Arc as Chrome, Zen as Firefox, RFP builds), plus rendering engine and a UA-spoof verdict.

npm i @qdev.app/abd-core

Usage

In the browser — collect live signals and detect:

import { collectSignals, detect } from '@qdev.app/abd-core';

const result = detect(await collectSignals());
// { browser, engine, spoofed, candidates, notes, ... }
console.log(result.browser.name, result.spoofed);

Anywhere — from a User-Agent string (can't see behind shared/spoofed UAs, but cheap):

import { detect, signalsFromUA } from '@qdev.app/abd-core';

detect(signalsFromUA(navigator.userAgent));

API

• collectSignals(): Promise<Signals> — gather live browser signals (browser only)
• detect(signals: Signals): DetectionResult — rank candidates, detect engine, flag spoofing
• signalsFromUA(ua: string): Signals — minimal signals from a UA string
• detectEngine, parseClaim, checkVersionConsistency, resolveInstallTargets, collectProbe, diffProbes — lower-level helpers

Full docs, CLI, and the signature registry: github.com/qdev-app/abd.

MIT