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Client-Side-Package-Management.md

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ASP.NET Core MVC Client Side Package Management

ABP framework can work any type of client side package management system. Even you can decide to use nothing and manually manage your dependencies.

However, ABP framework best works with NPM/Yarn. It provides tools to make it easier to work with and built-in modules are configured to work with NPM/Yarn by default.

Finally, we suggest the Yarn over the NPM since it's faster, stable and also compatible with the NPM.

@ABP NPM Packages

ABP is a modular platform. Every developer can create modules and the modules should work together in a compatible and stable state.

One challenge is the versions of the depended NPM packages. What if two different module use the same JavaScript library but its different (and potentially incompatible) versions.

To solve the versioning problem, we created a standard set of packages those depends on some common third-party libraries. Some example packages are @abp/jquery, @abp/bootstrap and @abp/font-awesome. You can see the list of packages from the Github repository.

The benefit of a standard package is:

  • It depends on a standard version of a package. Depending on this package is safe because all modules depend on the same version.
  • It contains the gulp task to copy library resources (js, css, img... files) from the node_modules folder to wwwroot/libs folder. See the Mapping The Library Resources section for more.

Depending on a standard package is easy. Just add it to your package.json file as you normally add a package. Example:

{
  ...
  "dependencies": {
    "@abp/bootstrap": "^1.0.0"
  }
}

It's suggested to depend on a standard package instead of directly depending on a third-party package.

Package Installation

After depending on a NPM package, all you should do is to run the yarn command from the command line to install all the packages and their dependencies:

yarn

You can instead use the npm install but the Yarn is suggested as mentioned before.

Package Contribution

If you need a third-party NPM package that is not in the standard set of packages, you can create a Pull Request on the Github repository. A pull request that follows these rules is accepted:

  • Package name should be named as @abp/package-name for a package-name on NPM (example: @abp/bootstrap for the bootstrap package).
  • It should be the latest stable version of the package.
  • It should only depend a single third-party package. It can depend on multiple @abp/* packages.
  • The package should include a abp.resourcemapping.js file formatted as defined in the Mapping The Library Resources section. This file should only map resources for the depended package.
  • You also need to create bundle contributor(s) for the package you have created.

See current standard packages for examples.

Mapping The Library Resources

Using NPM packages and NPM/Yarn tool is the de facto standard for client side libraries. NPM/Yarn tool creates a node_modules folder in the root folder of your web project.

Next challenge is copying needed resources (js, css, img... files) from the node_modules into a folder inside the wwwroot folder to make it accessible to the clients/browsers.

ABP defines a Gulp based task to copy resources from node_modules to wwwroot/libs folder. Each standard package (see the @ABP NPM Packages section) defines the mapping for its own files. So, most of times, you only configure dependencies.

The startup templates are already configured to work all these out of the box. This section will explain the configuration options.

Resource Mapping Definition File

An module should define a JavaScript file named abp.resourcemapping.js which is formatted as in the example below:

module.exports = {
    aliases: {
        "@node_modules": "./node_modules",
        "@libs": "./wwwroot/libs"
    },
    clean: [
        "@libs"
    ],
    mappings: {
        
    }
}
  • aliases section defines standard aliases (placeholders) those can be used in the mapping paths. @node_modules and @libs are required (by the standard packages), you can define your own aliases to reduce duplication.
  • clean section is a list of folders to clean before copying the files.
  • mappings section is a list of mappings of files/folders to copy. This example does not copy any resource itself, but depends on a standard package.

An example mapping configuration is shown below:

mappings: {
    "@node_modules/bootstrap/dist/css/bootstrap.css": "@libs/bootstrap/css/",
    "@node_modules/bootstrap/dist/js/bootstrap.bundle.js": "@libs/bootstrap/js/"
}

Using The Gulp

Once you properly configure the abp.resourcemapping.js file, you can run the gulp command from the command line:

gulp

When you run the gulp, all packages will copy their own resources into the wwwroot/libs folder. Running yarn & gulp again is only necessary if you make a change in your dependencies in the package.json file.

When you run the Gulp command, dependencies of the application are resolved using the package.json file. The Gulp task automatically discovers and maps all resources from all dependencies (recursively).

See Also