Typescript class 02

What does TypeScript add to JavaScript that makes it more robust?

• Strongly-typed variables

• Dynamic typing

• Automatic memory management

• Built-in debugging tools

What is the purpose of TypeScript's "Type Declaration"?

• To define the types of data a variable can hold

• To declare a new variable

• To perform type casting

• To add comments to the code

Typescript is

• interpreted language

• compiled language

Answer explanation

The compiler takes TypeScript code, removes the type information, and generates JavaScript code

The target of this compilation is itself a "source language" makes this a special case of compilation.

This is often called 'transpilation' because it is translating from one source language to another and transpilation is a form of compilation.

What does TypeScript add to JavaScript to help catch errors at compile time?

• Static typing

• Dynamic typing

• Runtime checks

• Enhanced performance

In TypeScript, which keyword is used to declare a variable?

• let

• const

• var

• type

• variable

Which of the following is used to indicate the type of a variable in TypeScript?

• typeOf

• isType

• :

• #

What tool can you use to transpile TypeScript code into JavaScript code?

• TypeScript Compiler (tsc)

• JavaScript Transformer (jst)

• TypeScript Formatter (tsf)

• JavaScript Linter (eslint)

Javascript is a subset of Typescript

• True

• False

JSON is

• Used to store data

• Used to transfer Data

• File format

• Used to maintain the version of packages

• Used for Configuration setting

Our project is dependent on some packages (called as dependencies) and these packages are dependent on some other dependencies and those dependencies are further dependent on some other dependencies and so on these are called as