How to Install Older Version of a NPM Package

NPM (Node Package Manager) is a command-line tool for managing node modules for Node.js applications. It is used to install, update or delete a node module in your system. It also follows the pacakge.json file for proper management of node modules for an application.

The  npmjs.com is the centralized repository containing all the node.js modules. Npm download the packages from npmjs and install them on a client machine. By default, NPM installs the latest version of an available module, but sometimes you may be required an older version of the module for your application.

This tutorial helps you for installing the old version of modules with NPM command-line tool.

Syntax

The npm specific version installation uses the following syntax:

npm install [packagename]@[version]

Here pacakgename is the name of the packages and version is the version number to be install.

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NPM Install and NPM CI: In What Aspect They Differ

Nodejs web development has achieved such a huge acclamation all over the world just because of its large ecosystem of libraries known as NPM modules. It is the largest software package library in the world, with over 500,000+ packages. Each time a Command Line Interface (CLI) for npm comes as an add-on with Nodejs installation which allows developers to connect with packages locally on their machine.

The idea of npm modules had come with some technical advancement in package management like reusable components, with easy installation via an online repository, with version and dependency management.

In general,NPM is a default package manager for every Nodejs development project. Npm eases the installing and updating dependencies processes. A dependency list on npmjs even provides you with the installation command, so that you can simply copy and paste in the terminal to initiate installation procedures.

All npm users have an advantage of a new install command called “npm ci(i.e. npm continuous integration)”. These commands provide enormous improvements to both the performance and reliability of default builds for continuous integration processes. In turn, it enables a consistent and fast experience for developers using continuous integration in their workflow.

In npm install, it reads the package.json to generate a list of dependencies and uses package-lock.json to know the exact version of these dependencies to install. If the dependency is found in package-lock.jso, it will be added by npm install.

Whereas here, the npm ci (continuous integration) installs dependencies from package-lock.json directly and use up package.json just to verify that there are no mismatched versions exists. If any dependencies mismatching versions, it will show an error.

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How to install exact (older) version of NPM package

Learn, how to install an exact previous version of an npm package.

reactgo.com recommended courseNodeJS - The Complete Guide (incl. MVC, REST APIs, GraphQL)

Sometimes, when we try to install a npm package using the npm install <package-name> command we will see the node version compatibility errors like this in our terminal.

express requires node version >= 7.0.

To solve it, we can install an older version of the npm package by specifying a version number after the package name.

Example:

npm install express@3.3.8

This above command will install an express version 3.3.8.

You can also install it globally by adding a -g flag to the command.

npm install -g express@3.3.8

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Up your npm game with these 4 practices

If you don’t know what npm is then you should probably read about it before reading this article. This article is going to touch on recommendations and advanced concepts for those experienced with it. If you’re not, don’t worry, it’s not that complicated. I can recommend reading this article to get you started.

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How to Install Pyenv on Ubuntu 18.04

What is Pyenv?
Pyenv is a fantastic tool for installing and managing multiple Python versions. It enables a developer to quickly gain access to newer versions of Python and keeps the system clean and free of unnecessary package bloat. It also offers the ability to quickly switch from one version of Python to another, as well as specify the version of Python a given project uses and can automatically switch to that version. This tutorial covers how to install pyenv on Ubuntu 18.04.

#tutorials #apt #debian #environment #git #github #linux #package #package management #package manager #personal package archive #ppa #pyenv #python #python 3 #python support #python-pip #repository #smb #software #source install #ubuntu #ubuntu 18.04 #venv #virtualenv #web application development

How to Install Older Version of a NPM Package

NPM (Node Package Manager) is a command-line tool for managing node modules for Node.js applications. It is used to install, update or delete a node module in your system. It also follows the pacakge.json file for proper management of node modules for an application.

The  npmjs.com is the centralized repository containing all the node.js modules. Npm download the packages from npmjs and install them on a client machine. By default, NPM installs the latest version of an available module, but sometimes you may be required an older version of the module for your application.

This tutorial helps you for installing the old version of modules with NPM command-line tool.

Syntax

The npm specific version installation uses the following syntax:

npm install [packagename]@[version]

Here pacakgename is the name of the packages and version is the version number to be install.

#nodejs #node #nodejs #npm