TypeScript Lab: package.json Explorer

LAB / EXPLORATION

TypeScript Lab: package.json Explorer

Planned

LAB 004 — TypeScript Toolchain
Visualize scripts, module mode, and development dependencies.

LAB TypeScript Lab: package.json Explorer Preview coming soon

LAB 004

TypeScript Lab: package.json Explorer

Concept

package.json describes project metadata, scripts, modules, and installed tooling.

Concept

package.json describes project metadata, scripts, modules, and installed tooling.

Objective & Explanation

What the project should make visible and why the concept matters.

Learning Target

Objective

Visualize scripts, module mode, and development dependencies.

Explanation

package.json describes project metadata, scripts, modules, and installed tooling.

Project Plan

Structure, technologies, data boundary, and source connection.

Structure

project/
├── package.json
├── package-lock.json
├── tsconfig.json
├── index.html
└── src/
    └── app.ts

Technologies

TypeScript
Node.js
npm

Data Layer

No persistent data layer. Keep all demonstration values inside the standalone project.

Sandbox Source

package.json

Build Instructions

Build only the focused behavior, then use the visual layer to inspect it.

Setup

Create the standalone project folder and listed files.

Implement

Implement the smallest version that demonstrates the concept.

Run & Inspect

Change one input and observe the visible output change.

Code & Configuration

Starter configuration plus the focused implementation example.

Focused TypeScript

Implement this behavior first, then alter the input.

const packageInfo = {
  type: "module",
  scripts: { build: "tsc" },
  devDependencies: ["typescript", "@types/node"],
};

document.querySelector("#output")!.textContent =
  JSON.stringify(packageInfo, null, 2);

Starter Configuration

Keep the project independently buildable.

package.json

{
  "type": "module",
  "scripts": { "build": "tsc" },
  "devDependencies": { "typescript": "^7.0.2" }
}

tsconfig.json

{
  "compilerOptions": {
    "rootDir": "./src",
    "outDir": "./dist",
    "target": "ES2022",
    "module": "ES2022",
    "lib": ["ES2022", "DOM"],
    "strict": true,
    "sourceMap": true
  },
  "include": ["src/**/*.ts"]
}

Expected Visual Result

The output is the proof that the concept is working.

Visible Proof

The browser should visibly demonstrate: visualize scripts, module mode, and development dependencies.

Data: None