How To Install node-lolex on Debian 9

In this tutorial we learn how to install node-lolex on Debian 9. node-lolex is Fake JavaScript timers

Introduction

In this tutorial we learn how to install node-lolex on Debian 9.

What is node-lolex

node-lolex is:

JavaScript implementation of the timer APIs; setTimeout, clearTimeout, setImmediate, clearImmediate, setInterval and clearInterval, along with a clock instance that controls the flow of time. Lolex also provides a Date implementation that gets its time from the clock.

Lolex can be used to simulate passing time in automated tests and other situations where you want the scheduling semantics, but don’t want to actually wait. Lolex is extracted from Sinon.JS.

There are three methods to install node-lolex on Debian 9. We can use apt-get, apt and aptitude. In the following sections we will describe each method. You can choose one of them.

Install node-lolex Using apt-get

Update apt database with apt-get using the following command.

sudo apt-get update

After updating apt database, We can install node-lolex using apt-get by running the following command:

sudo apt-get -y install node-lolex

Install node-lolex Using apt

Update apt database with apt using the following command.

sudo apt update

After updating apt database, We can install node-lolex using apt by running the following command:

sudo apt -y install node-lolex

Install node-lolex Using aptitude

If you want to follow this method, you might need to install aptitude first since aptitude is usually not installed by default on Debian. Update apt database with aptitude using the following command.

sudo aptitude update

After updating apt database, We can install node-lolex using aptitude by running the following command:

sudo aptitude -y install node-lolex

How To Uninstall node-lolex on Debian 9

To uninstall only the node-lolex package we can use the following command:

sudo apt-get remove node-lolex

Uninstall node-lolex And Its Dependencies

To uninstall node-lolex and its dependencies that are no longer needed by Debian 9, we can use the command below:

sudo apt-get -y autoremove node-lolex

Remove node-lolex Configurations and Data

To remove node-lolex configuration and data from Debian 9 we can use the following command:

sudo apt-get -y purge node-lolex

Remove node-lolex configuration, data, and all of its dependencies

We can use the following command to remove node-lolex configurations, data and all of its dependencies, we can use the following command:

sudo apt-get -y autoremove --purge node-lolex

Dependencies

node-lolex have the following dependencies:

References

Summary

In this tutorial we learn how to install node-lolex package on Debian 9 using different package management tools: apt, apt-get and aptitude.