TypeScript Lab: ES Modules Connector

LAB / EXPLORATION

TypeScript Lab: ES Modules Connector

Planned

LAB 007 — TypeScript Toolchain
Connect exported values to imported browser modules.

LAB TypeScript Lab: ES Modules Connector Preview coming soon

LAB 007

TypeScript Lab: ES Modules Connector

Concept

ES modules divide programs into explicit reusable files using import and export.

Concept

ES modules divide programs into explicit reusable files using import and export.

Objective & Explanation

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

Learning Target

Objective

Connect exported values to imported browser modules.

Explanation

ES modules divide programs into explicit reusable files using import and export.

Project Plan

Structure, technologies, data boundary, and source connection.

Structure

project/
├── package.json
├── tsconfig.json
├── index.html
├── styles.css
└── src/
    └── app.ts

Technologies

TypeScript
Node.js
npm
HTML
CSS

Data Layer

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

Sandbox Source

package.json, src modules

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.

// message.ts
export const message = "Connected through an ES module";

// app.ts
import { message } from "./message.js";
document.querySelector("#output")!.textContent = message;

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: connect exported values to imported browser modules.

Data: None