Automatic runtime error detection for JavaScript applications. Detects API failures, null/undefined access, missing render data, and unhandled errors -- with actionable context.

Installation

npm install @devlens/core

Quick Start

import {
  createDetectionEngine,
  createNetworkInterceptor,
  createGlobalCatcher,
  createDataGuardian,
} from '@devlens/core';

const engine = createDetectionEngine();

const network = createNetworkInterceptor(engine);
network.install();

const catcher = createGlobalCatcher(engine);
catcher.install();

const guardian = createDataGuardian(engine);
const data = guardian.guard(apiResponse, 'apiResponse');

// Accessing null/undefined properties now auto-logs
console.log(data.user.profile.avatar);

Console Output

[NET] DevLens [ERROR] network: POST /api/users returned 500 Internal Server Error
  |- Status: 500
  |- Duration: 1234ms
  |- Suggestion: Server returned 500 -- check server logs
  \- Source: NetworkInterceptor

API Reference

Export	Description
`createDetectionEngine(config?)`	Creates the core detection engine
`createNetworkInterceptor(engine, config?)`	Fetch/XHR interceptor
`createDataGuardian(engine, config?)`	Proxy-based null/undefined detection
`createGlobalCatcher(engine, config?)`	Global error + unhandled rejection handler
`createConsoleReporter()`	Formatted console output