- what are the fundamental organizational units of every Webiny project and their most important characteristics
Every Webiny project consists of two fundamental organizational units - packages and project applications (or just applications).
Packages are just regular NPM packages, or in other words, folders with its own
package.json declaration file and some code.
On the other hand, project applications are higher-level organizational units formed from one or more packages that, as the name itself suggests, form applications. Applications consist of both application code and cloud infrastructure that is needed in order to run them.
The following diagram shows the project organization in a simplified and clear manner:
If we were to translate the above diagram into a simplified directory tree, we would end up with the following:
Packages 1a, 1b, and 1c are located in the
Project Application 1 folder, and the 2a and 2b in
Project Application 2. And, as seen in the diagram above, Project Application 1 is using the shared package
shared-package-1, and Project Application 2 both
shared-package-2. These shared packages are located in a separate
The name of the
packages folder is arbitrary and at this point, not important.
Here are some of the most important characteristics of packages and applications.
There is no limit in terms of the total number of packages and applications a single Webiny project can have.
Packages and applications can be independent, but, more importantly, can also be dependent on other packages, and applications, respectively.
In terms of packages, an example might be a utility (shared) package whose code is imported by other packages. This way you keep your code in a single location and don’t repeat yourself, which effectively makes the code easier to maintain.
The same can happen with project applications. For example, let’s say you have a simple HTTP API and a React app that’s relying on it. In this case, the project application that’s holding the React app depends on the project application that’s holding the HTTP API.
No. You can organize packages and project applications in any way you see fit. For example, the folder in which you store your shared packages can be named in any way you like. You can have as many of those as needed, and can be organized in different folders, again, as you see fit. The same goes for project applications.