Getting Started

pui-diagnostics is a framework-agnostic JavaScript library for logging messages from web applications, following ICEMT logging guidelines.

Quick Start

import {
  logger,
  http,
  logUnhandledErrors,
  webvitals,
} from '@elliemae/pui-diagnostics';

const appLogger = logger({
  transport: http('https://int.api.ellielabs.com/diagnostics/v2/logging'),
  index: 'myapp',
  team: 'my team',
  appName: 'Hello World App',
});

logUnhandledErrors(appLogger);
webvitals(appLogger);

appLogger.info('Application launched');

Log Levels

Level	Value	Behavior
DEBUG	10	Batched, subject to sampling/rate limiting
INFO	20	Batched, subject to sampling/rate limiting
AUDIT	30	Batched, subject to sampling/rate limiting
WARN	40	Sent immediately, never sampled or rate limited
ERROR	50	Sent immediately, never sampled or rate limited
FATAL	60	Sent immediately, never sampled or rate limited

The default log level is INFO. Messages below this threshold are not logged.

Next Steps

• Installation — CDN and npm setup
• Usage — Detailed examples, transport options, and API reference
• Features — Full feature list