pino-grove

Lightweight pino log prettier

Usage

CLI

node index.js | pino-grove

Customize formatting

You customize formatting programatically

// log-pretty.js
import { runPinoGrove } from 'pino-grove';

runPinoGrove({
  configs: [
    {
      prefix: {
        // override default log prefix formatting
        overide: ['level', 'time', 'time-delta'], // this match the default format
      },
    },
    {
      // customize log header
      prefix: {
        append: ['trace_id'], // append elements to the prefix format, this should match keys of custom `formatters` or built-in formatters
        formatters: {
          trace_id: (logObj, { pc }) => {
            if (typeof logObj['trace_id'] === 'string') {
              return pc.cyan(logObj['trace_id']); // pc from library 'picocolors'
            }
          },
        },
      },
    },
  ],
});

node index.js | node log-pretty.js

Express

// index.js
// ...
import { addLogger } from 'pino-grove/express';

//...
const logger = pino();
const app = express();
app.use(addLogger(logger)); // add logger as express middleware
//...

// log-prettier.js
import { runPinoGrove } from 'pino-grove';
import { expressConfig } from 'pino-grove/express'; // format request metadata

runPinoGrove({
  configs: [expressConfig],
});

node index.js | node log-prettier.js