verdaccio/packages/logger/logger-prettify/test/index.spec.ts

import pino from 'pino';
import { Writable } from 'stream';
import { describe, expect, test } from 'vitest';

import { buildPretty } from '../src';

describe('prettyFactory', () => {
  const prettyfierOptions = {
    messageKey: 'msg',
    levelFirst: true,
    prettyStamp: false,
    colors: false,
  };
  test('should return a function', () =>
    new Promise((done) => {
      const pretty = buildPretty(prettyfierOptions);
      const log = pino(
        new Writable({
          objectMode: true,
          write(chunk, enc, cb) {
            const formatted = pretty(JSON.parse(chunk));
            expect(formatted).toBe('info --- test message');
            cb();
            done(true);
          },
        })
      );
      log.info({ test: 'test' }, '@{test} message');
    }));
});