NPM Package Dependencies

This application takes the name of an NPM package and lists its dependencies recursively.

It caches the NPM packages with React Query.

It's developed with TDD/BDD with Cypress.

Install

On a terminal in the project directory, run:

npm install

Available Scripts

In the project directory, you can run:

npm start

Runs the app in the development mode.
Open http://localhost:3000 to view it in the browser.

The page will reload if you make edits.
You will also see any lint errors in the console.

npm run cypress:open

Runs the Cypress app.

Click on a test suit to run it in the browser.

npm run build

Builds the app for production to the build folder.
It correctly bundles React in production mode and optimizes the build for the best performance.

The build is minified and the filenames include the hashes.\

Known errors

The NPM registry API doesn't include the Access-Control-Allow-Origin header in the response. This makes it not possible to read the responses from a frontend like this application.

This application can use the NPM registry API with a local server, changing:

src/utils/urls.js:

export function makeNpmPackageUrl(packageName) {
  return `https://registry.npmjs.org/${packageName}/latest`;
}

with:

src/utils/urls.js:

export function makeNpmPackageUrl(packageName) {
  return `/${packageName}/latest`;
}

while having:

package.json:

{
  ...
  "proxy": "https://registry.npmjs.org",
  ...
}