DDD AST

Find out whether your codebase is Strongly Typed 💪 or Stringly Typed 🤦🏻

Why ?

I believe that excellent code quality requires the developer to have a firm understanding of the business they implement.

I believe a firm understanding of the business reflects in a meaningful typing of the code.

Principle

The idea is to collect types used in the business logic code in order to compare it with the ubiquitous language.

With this insight the developer can quantify how much the codebase correctly models the problem to solve.

The tool

ddd-ast uses java-parser to build Concrete Syntax Tree from Java files, collects types identifiers that describe:

• fields
• variables
• parameters
• methods result

How to use

Standalone

In the project directory:

npm install to install required dependencies

node parse.js to parse stdin

As a dependency

That's how this package is intended to be used 😃

Suppose you have a Java project "my-java-project"

Just create this package.json file at the root of the project:

{
  "name": "my-java-project",
  "version": "0.0.1",
  "devDependencies": {
    "@lolo101/ddd-ast": "latest"
  }
}

Run npm install

and then it becomes possible to use the ddd command in a script in your projects:

$ cat HelloWorldExample.java | npx ddd | sort | uniq -c | sort -nr
      2 System
      2 String
      2 println
      2 out
      2 arguments
      2 args
      1 main
      1 List
      1 HelloWorldExample
      1 asList
      1 Arrays

How to maintain

How to release a new version

I recommend using np to publish a new release

npx np major
npx np minor
npx np patch