Web Development

Typescriptlang.org https://www.typescriptlang.org/docs/handbook/generics.html Interfaces : One of TypeScript’s core principles is that type checking focuses on the shape that values have. This is sometimes called “duck

Typescriptlang.org function greeter(person: string) { return “Hello, ” + person; } let user = “Jane User”; document.body.textContent = greeter(user); Interfaces : interface Person { firstName:

Configuring, Compiling, and Debugging TypeScript Projects Why TypeScript ? 1. Compile-time type checking prevents errors 2. Classes, types and interfaces assist in collaborative development 3.

Interface interface IsPerson { name : string; age: number; speak(a: string): void; spend(a: number): number; } const me: IsPerson = { name: ‘shaun’, age: 30,

1.tsconfig.json { “compilerOptions”: { “target”: “es6”, /* Specify ECMAScript target version: ‘ES3’ (default), ‘ES5’, ‘ES2015’, ‘ES2016’, ‘ES2017’, ‘ES2018’, ‘ES2019’, ‘ES2020’, or ‘ESNEXT’. */ “module”: “es2015”,