TypeScript Lab: Boolean Normalizer

LAB / EXPLORATION

TypeScript Lab: Boolean Normalizer

Planned

LAB 105 — Validation & Safety
Convert several boolean-like values into stored numeric flags.

LAB TypeScript Lab: Boolean Normalizer Preview coming soon

LAB 105

TypeScript Lab: Boolean Normalizer

Concept

Normalization converts varied input representations into one database-friendly format.

Concept

Normalization converts varied input representations into one database-friendly format.

Objective & Explanation

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

Learning Target

Objective

Convert several boolean-like values into stored numeric flags.

Explanation

Normalization converts varied input representations into one database-friendly format.

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

Data Layer

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

Sandbox Source

src/local-editor/server.ts → normalizeBoolean()

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.

function normalizeBoolean(value: unknown): number {
  return value === true || value === 1 || value === "1" ? 1 : 0;
}

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: convert several boolean-like values into stored numeric flags.

Data: None