How To Install uglifyjs on Ubuntu 20.04
Introduction
In this tutorial we learn how to install uglifyjs
on Ubuntu 20.04.
What is uglifyjs
uglifyjs 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 the command-line tool uglifyjs.
There are three methods to install uglifyjs
on Ubuntu 20.04. We can use apt-get
, apt
and aptitude
. In the following sections we will describe each method. You can choose one of them.
Install uglifyjs Using apt-get
Update apt database with apt-get
using the following command.
sudo apt-get update
After updating apt database, We can install uglifyjs
using apt-get
by running the following command:
sudo apt-get -y install uglifyjs
Install uglifyjs Using apt
Update apt database with apt
using the following command.
sudo apt update
After updating apt database, We can install uglifyjs
using apt
by running the following command:
sudo apt -y install uglifyjs
Install uglifyjs 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 uglifyjs
using aptitude
by running the following command:
sudo aptitude -y install uglifyjs
How To Uninstall uglifyjs on Ubuntu 20.04
To uninstall only the uglifyjs
package we can use the following command:
sudo apt-get remove uglifyjs
Uninstall uglifyjs And Its Dependencies
To uninstall uglifyjs
and its dependencies that are no longer needed by Ubuntu 20.04, we can use the command below:
sudo apt-get -y autoremove uglifyjs
Remove uglifyjs Configurations and Data
To remove uglifyjs
configuration and data from Ubuntu 20.04 we can use the following command:
sudo apt-get -y purge uglifyjs
Remove uglifyjs configuration, data, and all of its dependencies
We can use the following command to remove uglifyjs
configurations, data and all of its dependencies, we can use the following command:
sudo apt-get -y autoremove --purge uglifyjs
References
Summary
In this tutorial we learn how to install uglifyjs
package on Ubuntu 20.04 using different package management tools: apt
, apt-get
and aptitude
.