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Lab 0: TypeScript

Objectives​

  • Create a simple TypeScript file
  • Understand the basic syntax of TypeScript
  • Transpile TypeScript to JavaScript
  • Run the JavaScript file

Instructions​

Standard variables​

  • Create a new file called app.ts in the root of your project.
  • Write a simple TypeScript code that declares a variable message and assigns a string to it.
  • Write the message variable using console.log
  • Transpile the TypeScript file to JavaScript using the tsc command.
  • Run the JavaScript file using the node command.

User type​

  • Declare a user type with the following properties: name, age, email.
  • Create a variable user and assign an object that respects the user type.
  • console.log the user variable.
  • console.log the user's email property.
  • run the command jusing the --watch flag to watch for changes in the file.
    • tsc -w file.ts

User function​

  • Create a function that takes a user as a parameter and returns a string with the user's name and age.
    • ex: 'Thomas is 39 years old'
  • Call the function with the user variable and log the result.
  • Run the JavaScript file using the node command.