Mocko Logger

This is the logging module used by Mocko.

Usage

With Mocko Logger, you can create logging templates that you'll use later to log structured messages. Here's an example:

import { LogColumn, Logger } from '@mocko/logger';
import * as colors from 'colors/safe';

const log = new Logger()
    .column(LogColumn.fixed('[mocko]').color(colors.blue))
    .column(LogColumn.timestamp().clf().color(colors.dim))
    .column(LogColumn.text().size(7).right().color(colors.gray))
    .column(LogColumn.text())
    .log;

log("info", "Hi there :)");
log("warning", "Lorem ipsum dolor sit amet");

This would produce:

Columns

Generic

All columns provide you with the .color modifier. You can pass a color function from any lib you use. Example:

import { LogColumn, Logger } from '@mocko/logger';
import * as colors from 'colors/safe';

const log = new Logger()
    .column(LogColumn.text().color(colors.magenta))
    .log;

log('This text is magenta :)');

Fixed

The fixed column is a piece of text that won't change. It doesn't require a new parameter from the user. Example:

import { LogColumn, Logger } from '@mocko/logger';
import * as colors from 'colors/safe';

const warn = new Logger()
    .column(LogColumn.fixed('WARN').color(colors.yellow))
    .column(LogColumn.text())
    .log;

warn('This is a warning');

Text

The text column requires a new parameter from the user and will apply its rules to it. A fixed size text will have padding added to the beggining or end of it deppending on the alignment (right/left). The default is left-aligned text.

Timestamp

The timestamp column prints the current time, it doesn't require a new parameter from the user. You can format it with .iso, .utc, .clf or .millis. The default is clf. Example:

import { LogColumn, Logger } from '@mocko/logger';
import * as colors from 'colors/safe';

const warn = new Logger()
    .column(LogColumn.timestamp().iso().color(colors.dim))
    .column(LogColumn.fixed('WARN').color(colors.yellow))
    .column(LogColumn.text())
    .log;

warn('This is a warning');