Pretty Logging

The @crowlog/pretty CLI formats JSON logs for human-readable output during development. It's inspired by the popular pino-pretty but tailored for Crowlog with minimalism and performance in mind.

Installation

Install globally or use npx:

npx

node app.js | npx crowlog-pretty

pnpm

pnpm install -g @crowlog/pretty

npm

npm install -g @crowlog/pretty

yarn

yarn global add @crowlog/pretty

Usage

Pipe JSON logs through the pretty formatter:

# Node.js
node index.js | npx crowlog-pretty

# tsx
tsx watch index.ts | npx crowlog-pretty

# From file
cat logs.jsonl | npx crowlog-pretty

# PM2
pm2 logs --raw | npx crowlog-pretty

Features

• Colored output: Different colors for each log level
• Timestamp formatting: Human-readable timestamps
• Data formatting: Pretty-printed JSON data
• Namespace highlighting: Easy to spot log sources
• Error stack traces: Formatted for readability

Example Output

Here's an example of pretty-printed logs:

Development Workflow

Use pretty logging in development:

package.json

{
  "scripts": {
    "dev": "tsx watch src/index.ts | crowlog-pretty",
    "build": "...",
    "start": "node dist/index.js"
  }
}

# Development: pretty logs
pnpm dev

# Production: JSON logs
pnpm start