TypeScript for Beginners - declare Prefix

The video tutorial explains ambient variables in TypeScript, which are variables from external libraries not directly available in TypeScript files. It discusses using the 'declare' keyword to define these variables, indicating they originate from outside the file. The tutorial encourages further exploration and research on ambient variables, though it does not delve into importing external libraries.

What are ambient variables in TypeScript?

• Variables that are only used in functions

• Variables that are always global

• Variables that come from external libraries

• Variables defined within the TypeScript file

Which keyword is used to define ambient variables in TypeScript?

• declare

• export

• import

• require

Why is it important to declare ambient variables?

• To ensure they are available globally

• To specify that they come from an external source

• To make them private to a module

• To convert them into constants

What is the purpose of the 'declare' keyword in TypeScript?

• To define ambient variables

• To create classes

• To import modules

• To export functions

What should you do if you want to learn more about ambient variables?

• Conduct further research and ask questions

• Avoid using external libraries

• Ignore them as they are not important

• Only use them in small projects