Better NestJS pino-pretty logger output for local development

app.module.ts

// Compact terminal output, colorized, with the following fields highlighted with
// brighter text for easier readability: request ID, request method, request URL,
// request Authorization header, response status code, and context which is usually
// a string passed when creating each logger object e.g. "SomeController".

import { Module } from '@nestjs/common';
import { blackBright, inverse } from 'cli-color';
import { pick } from 'lodash';
import { LoggerModule } from 'nestjs-pino';

function highlightValue(json: string, value: string) {
  return value ? json.replace(value, inverse(value)) : json;
}

function highlightContext(
  log: Record<string, any>, // eslint-disable-line @typescript-eslint/no-explicit-any
  messageKey: string,
) {
  const props = ['req', 'res', 'context'];
  let json = JSON.stringify(pick(log, ...props));
  json = highlightValue(json, log.req?.id);
  json = highlightValue(json, log.req?.method);
  json = highlightValue(json, log.req?.url);
  json = highlightValue(json, log.req?.headers?.authorization);
  json = highlightValue(json, log.res?.statusCode);
  json = highlightValue(json, log.context);
  props.forEach((key) => delete log[key]);
  return `${log[messageKey]} ${blackBright(json)}`;
}

@Module({
  imports: [
    LoggerModule.forRoot({
      pinoHttp: [
        {
          prettyPrint: environment.production
            ? false
            : {
                translateTime: 'SYS:HH:MM:ss.l',
                colorize: true,
                singleLine: true,
                ignore: 'pid,hostname',
                messageFormat: highlightContext,
              },
        },
      ],
    }),
  ],
})
export class AppModule {}

example.png