logol

Simple wrapper of console.log to had some color in the terminal.

Node

yarn add logol
or
npm install logol

const logol = require('logol');
 
logol.info('test info', { a: 123 });
logol.log('test log', { a: 123 });
logol.success('test success', { a: 123 });
logol.debug('test debug', { a: 123 });
logol.warn('test warn', { a: 123 });
logol.error('test error', { a: 123 });
 
// or
 
import { info, log, success, debug, warn, error } from 'logol';
 
info('test info', { a: 123 });
log('test log', { a: 123 });
success('test success', { a: 123 });
debug('test debug', { a: 123 });
warn('test warn', { a: 123 });
error('test error', { a: 123 });

Will output:

Deno

import {
    info,
    log,
    success,
    debug,
    warn,
    error,
} from 'https://raw.githubusercontent.com/apiel/logol/master/mod.ts';
 
info('test info', { a: 123 });
log('test log', { a: 123 });
success('test success', { a: 123 });
debug('test debug', { a: 123 });
warn('test warn', { a: 123 });
error('test error', { a: 123 });

Experimental features

This are experimental features.

Filter log

Filter by stack trace

In some case you might want to filter some specific logs. To do this, use environment variable LOGOL_FILTER by passing a regex. This regex will be applied on the stacktrace of the function calling the log. E.g: this is the stacktrace at run (/home/user/test.js:4:7), to display only this log we could do LOGOL_FILTER=test.js.

To show the stacktrace of the log, use the enironment variable LOGOL_SHOW_STACK=true.

Filter by level

To only show some specific log level, use environment variable LOGOL_LEVELS where we can define wich log level to display, e.g.: LOGOL_LEVELS=error,warn (each level is seprated by a "," without spacing)

Overwrite logol

In some case, we might need to overwrite the logger, for example to do unit test.

logol.logol.log = (...params) => console.log('overwrite', ...params);
logol.log('test log', { a: 123 });