How To Install libjs-uglify on Ubuntu

Posted on April 1, 2023  (Last modified on May 20, 2023 )

3 minutes  • 512 words

Introduction

In this tutorial we learn how to install libjs-uglify on Ubuntu.

What is libjs-uglify

libjs-uglify is:

UglifyJS is a JavaScript compressor/minifier written in JavaScript. It also contains tools that allow one to automate working with JavaScript code:

• A parser which produces an abstract syntax tree (AST) from JavaScript code.
• A code generator which outputs JavaScript code from an AST, also providing the option to get a source map.
• A compressor (optimizer) - it uses the transformer API to optimize an AST into a smaller one.
• A mangler - reduce names of local variables to (usually) single-letters.
• A scope analyzer, which is a tool that augments the AST with information about where variables are defined/referenced etc.
• A tree walker - a simple API allowing you to do something on every node in the AST.
• A tree transformer - another API intended to transform the tree.

All the above utilities and APIs are defined in ~6500 lines of code (except for the effective generation of the source-map, which is handled by the source-map module). Compared to alternatives, UglifyJS is pretty small.

This package provides UglifyJS in library form for use by other Javascript packages and web applications.

NB! This package is deprecated! Please consider using libjs-uglify-js instead.

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

Install libjs-uglify Using apt-get

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

sudo apt-get update

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

sudo apt-get -y install libjs-uglify

Install libjs-uglify Using apt

Update apt database with apt using the following command.

sudo apt update

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

sudo apt -y install libjs-uglify

Install libjs-uglify 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 Ubuntu. Update apt database with aptitude using the following command.

sudo aptitude update

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

sudo aptitude -y install libjs-uglify

How To Uninstall libjs-uglify on Ubuntu

To uninstall only the libjs-uglify package we can use the following command:

sudo apt-get remove libjs-uglify

Uninstall libjs-uglify And Its Dependencies

To uninstall libjs-uglify and its dependencies that are no longer needed by Ubuntu, we can use the command below:

sudo apt-get -y autoremove libjs-uglify

Remove libjs-uglify Configurations and Data

To remove libjs-uglify configuration and data from Ubuntu we can use the following command:

sudo apt-get -y purge libjs-uglify

Remove libjs-uglify configuration, data, and all of its dependencies

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

sudo apt-get -y autoremove --purge libjs-uglify

Dependencies

libjs-uglify have the following dependencies:

References

• libjs-uglify website

Summary

In this tutorial we learn how to install libjs-uglify package on Ubuntu using different package management tools: apt, apt-get and aptitude.