TELUS Digital Technical Lead Interview Questions and Answers

TypeScript is a superset of JavaScript that adds static typing and other features to help developers write more robust code.

• TypeScript is a statically typed language that compiles to plain JavaScript

• It supports modern JavaScript features like classes, interfaces, and modules

• TypeScript helps catch errors at compile time, making code more reliable and maintainable

A map function applies a given function to each element of an array and returns a new array with the results.

• Use the map function to iterate over each element of the array

• Pass a callback function as an argument to the map function

• The callback function should take the current element as input and return the transformed element

• Example: const arr = ['apple', 'banana', 'cherry']; const newArr = arr.map(item => item.toUpper...read more