JavaScript’s power and flexibility are shown through its wide array of libraries and frameworks, which include Angular, Node.js, React, and more. Each takes different approaches to empower the various goals of software engineers.

In this course, you’ll be introduced to the various processes of these unique frameworks as you develop a new open-source solution: Assma.js. You’ll become acquainted with compilation theory before defining logical operators. Next, you’ll delimit functions by creating production rules and define the elements of the programming language, including the syntax and semantics in the framework. You’ll finalize the core of the framework using DOM and tree structures before bundling the packages into a plugin component to manage future projects.

By the end of the course, you’ll have a deep understanding of core functions, design theories, and the creation of JavaScript frameworks from conception to deployment.

Discover: JavaScript Frameworks Behind the Scenes

# The `bundler` plugin
Popular JavaScript frameworks provide a convention for creating components. For example, some frameworks let developers define a new file with a specific extension dedicated to describing a component. This type of component is called SFC (Single File Component). To reproduce this feature we need to create a plugin that extends the module bundler and instruct it to manage those files with a specified extension. We use the following import statement for this: 
```
import Example from "./components/Example.assma";
```
At this point, the module bundler should know how to deal with this type of file. Below is an example of a `bundler` plugin that works with `Parcel`. All we need to do is to create an `index.js` file and export a function that takes a `bundler` variable as an argument. We can associate our specified extension to an `Asset`. An `Asset` represents the way to handle this type of file. To create an asset, we should define a class that extends `Asset` (from the `parcel` package) and override an async method, `generate()`. In this method, we write the logic of reading the imported file and converting it to known formats such as JavaScript or CSS code. The name of the imported file is injected into a ```basename``` class property, and the content is injected into a ```contents``` class property.

Learn to create a bundler plugin to manage components.

Course

Plugin

The `bundler` plugin

Plugin

The bundler plugin

The `bundler` plugin