TypeScript Lab: Typed Arrays Gallery

LAB / EXPLORATION

TypeScript Lab: Typed Arrays Gallery

Planned

LAB 016 — TypeScript Data Modeling
Add typed items and render the collection as cards.

LAB TypeScript Lab: Typed Arrays Gallery Preview coming soon

LAB 016

TypeScript Lab: Typed Arrays Gallery

Concept

Typed arrays require every collection item to satisfy the declared element type.

Concept

Typed arrays require every collection item to satisfy the declared element type.

Objective & Explanation

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

Learning Target

Objective

Add typed items and render the collection as cards.

Explanation

Typed arrays require every collection item to satisfy the declared element type.

Project Plan

Structure, technologies, data boundary, and source connection.

Structure

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

Technologies

TypeScript
HTML
CSS
JSON

Data Layer

Use a small local object, array, or JSON fixture so the transformation stays visible.

Sandbox Source

src/datastore/types.ts

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 Technology = { name: string };

const technologies: Technology[] = [
  { name: "TypeScript" },
  { name: "SQLite" },
];

technologies.push({ name: "HTML" });

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: add typed items and render the collection as cards.

Data: JSON