Npm devdependencies vs dependencies install#
When we install packages from npm, they are installed as dependencies. Now that we know all about npm dependencies and devDependencies let’s recap what we learnt by going through some frequently asked questions. Because of this difference, there is a noticeable difference in the syntax.
The difference between npm dependencies and devDependencies is that npm dependencies are used for a project to work in production, while devDependencies are used only in the development phase. So, if we checked it after installing a dependency, it would contain the following: "dependencies" : ĭifference Between npm Dependencies and devDependenciesĪfter reading the article so far, I’m pretty sure you’ve already figured out the difference between npm dependencies and devDependencies.ĭon’t worry if you haven’t, because we’ll discuss what it is in this section. Now, the package.json file contains all the dependencies used in a web application. Now, you may be wondering how do we install a package as a dependency. We can also say that npm dependencies are the packages needed for an application to work in production. NPM dependencies are all the packages that are used in a project. In this article, we’ll learn what they are and the difference between them. Now, two types of dependencies are npm dependencies and devDependencies. In Node.js, there exists a package manager called npm (node package manager).
With the example above, I’m pretty sure we’re clear with what packages are, so let’s move on to dependencies. If you’re thinking about packages, you are correct! Well, a concept similar to shopping in a market exists in coding. I’m pretty sure you’re wondering why we’re discussing shopping. Thus, a particular item is selected from a specific shop only.
There, we have specific stores for certain items.įor example, we buy vegetables from one shop, fruits from another and rice and lentils from yet another shop. See npm-config for more on the topic.įor build steps that are not platform-specific, such as compiling CoffeeScript or other languages to JavaScript, use the prepublish script to do this, and make the required package a devDependency.All of us have gone to the market to shop at some time or the other. These things will be installed when doing npm link or npm install from the root of a package, and can be managed like any other npm configuration param. In this case, it's best to map these additional items in a devDependencies object.
Npm devdependencies vs dependencies download#
If someone is planning on downloading and using your module in their program, then they probably don't want or need to download and build the external test or documentation framework that you use. Please do not put test harnesses or transpilers in your dependencies object. With the -production flag (or when the NODE_ENV environment variable is set to production), npm will not install modules listed in devDependencies.įor the differences between the dependencies and the dev dependencies see the explanation of package.json: If you don't want to have these dependencies, you need to add the -production switch.īy default, npm install will install all modules listed as dependencies in package.json. Per default, npm install also installs the devDependencies.
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