Logit

@vielzeug/logit is a zero-dependency logger that augments the native console with level filtering, namespace scopes, styled badges, and optional remote forwarding.

Installation

pnpm

pnpm add @vielzeug/logit

npm

npm install @vielzeug/logit

yarn

yarn add @vielzeug/logit

Quick Start

import { createLogger, Logit } from '@vielzeug/logit';

Logit.info('Boot complete');
Logit.warn('Cache stale');

const api = Logit.scope('api');
api.info('GET /users');

const workerLog = createLogger({ logLevel: 'warn', namespace: 'worker' });

await workerLog.group(
  'Job',
  async () => {
    await workerLog.time('process', () => runJob());
    workerLog.success('Done');
  },
  true,
);

Why Logit?

Plain console.log lacks structure: no log levels, no namespacing, no remote delivery, no way to silence logs in production.

// Before — manual approach
if (process.env.NODE_ENV !== 'production') {
  console.log('[api] GET /users', data);
}
fetch('/api/logs', { method: 'POST', body: JSON.stringify({ level: 'error', msg }) });

// After — Logit
import { Logit } from '@vielzeug/logit';
const api = Logit.scope('api');
api.info('GET /users', data); // filtered by log level, styled, optionally remote

Feature	Logit	Winston	Pino	console
Bundle size	1.7 KB	~44 kB	~4 kB	0 kB
Browser support	✅	❌	❌	✅
Scoped loggers	✅	Manual	Child	❌
Remote logging	✅ Built-in	✅ Transports	✅ Streams	❌
Styled output	✅ CSS badges	Text only	Text only	Manual
Zero dependencies	✅	❌ (15+)	❌ (5+)	N/A

Use Logit when you need isomorphic logging (browser + Node.js), namespaced module loggers, or remote error delivery without a heavy dependency chain.

Consider alternatives when you need high-throughput file-based logging (Pino), file rotation (Winston), or your team already uses a logging framework.

Features

• Level filtering (debug to off) with enabled() checks
• Namespace composition (scope) and isolated clones (child)
• Styled browser output (symbol, icon, text)
• time() and group() wrappers that auto-close on throw/reject
• Non-blocking remote forwarding with separate remote level threshold
• assert() and table() passthrough helpers
• Zero dependencies — 1.7 KB gzipped

Compatibility

Environment	Support
Browser	✅
Node.js	✅
SSR	✅
Deno	✅

See Also

• Fetchit
• Eventit
• Workit