TypeScript Lab: npm Dependency Installer

LAB / EXPLORATION

TypeScript Lab: npm Dependency Installer

Planned

LAB 005 — TypeScript Toolchain
Compare development dependencies with runtime dependencies visually.

LAB TypeScript Lab: npm Dependency Installer Preview coming soon

LAB 005

TypeScript Lab: npm Dependency Installer

Concept

Dependencies record packages a project needs and why they are installed.

Concept

Dependencies record packages a project needs and why they are installed.

Objective & Explanation

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

Learning Target

Objective

Compare development dependencies with runtime dependencies visually.

Explanation

Dependencies record packages a project needs and why they are installed.

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.

type Dependency = { name: string; kind: "runtime" | "development" };

const packages: Dependency[] = [
  { name: "typescript", kind: "development" },
  { name: "some-runtime-package", kind: "runtime" },
];

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: compare development dependencies with runtime dependencies visually.

Data: None