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Node.js Fundamentals · Modules & npm · Lesson 6 of 13

package.json Scripts

Concept

package.json Scripts

The scripts field defines shortcuts like npm run dev or npm start for common project commands.

By the end of this lesson
  • Explain the core idea behind package.json Scripts.
  • Predict output before running a change.
  • Test one realistic and one unusual input.
  • Use the result to make the next decision.
How to study this page
  1. 1. Read one concept.
  2. 2. Change the example.
  3. 3. Run, compare, and explain.
  4. 4. Complete the challenge below.
ExampleRunnable
{
  "scripts": {
    "start": "node server.js",
    "dev": "node --watch server.js"
  }
}
Try it Yourself »
Self-check before continuing

Without looking at the example, describe what changes when you modify one input in package.json Scripts. Then reopen the editor and prove your explanation with a small test.

You are ready to continue when you can predict, test, and explain the result.

Your turn

Write a package.json scripts block with a test command.

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Console

Output will appear here...