The @wdio/logger package is a utility used within the WebdriverIO testing framework to facilitate logging. It allows developers to create namespaced loggers that can be used to output messages to the console or to files, depending on the configuration. It is designed to work seamlessly with the WebdriverIO ecosystem but can also be used independently for logging purposes in Node.js applications.

What are @wdio/logger's main functionalities?

Creating a Logger Instance

This feature allows you to create a new logger instance with a specific namespace. You can then use this instance to log messages at different levels, such as info, warn, error, etc.

const logger = require('@wdio/logger').default('my-logger');
logger.info('This is an info message.');

Setting Log Levels

This feature allows you to set the log level for a specific logger instance. Messages below the set level will not be logged.

const logger = require('@wdio/logger').default('my-logger');
logger.setLevel('info');
logger.info('This will be logged.');
logger.debug('This will not be logged.');

Logging Messages

This feature is used to log messages at different severity levels. The available methods are info, warn, error, and others, each corresponding to a level of importance.

const logger = require('@wdio/logger').default('my-logger');
logger.info('Informational message');
logger.warn('Warning message');
logger.error('Error message');

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Source

WDIO Logger Utility

A helper utility for logging of WebdriverIO packages

This package is used across all WebdriverIO packages to log information using the loglevel package. It can also be used for any other arbitrary Node.js project.

Install

To install the package just call

$ npm install @wdio/logger

or when adding it to a WebdriverIO subpackage:

$ lerna add @wdio/logger --scope <subpackage>

Usage

The package exposes a logger function that you can use to register an instance for your scoped package:

import logger from '@wdio/logger'

const log = logger('myPackage')
log.info('some logs')

For more info see loglevel package on NPM.

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Last updated on 22 Nov 2018

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