introduction.md

Error Handling

In this exercise, you will implement a function called processString that processes a given input string with proper error handling.

You will learn how to:

• Check input types and throw errors for invalid inputs.
• Throw errors for specific cases (e.g., empty strings).
• Return the uppercase version of the string if it is valid.
• Handle and catch errors using a try..catch block

Implement the processString function using a try…catch block.

Inside the try block:

• If the input is not a string, throw a TypeError.

• If the input is an empty string, return null.

• If input length is greater than 100, throw Error.

• If input length is less than 10, throw Error.

• If input contains a mix of letters and numbers, throw Error.

• Otherwise, return the input in uppercase.

Inside the catch block:

• console log the error message
• throw the error so it can be tested for its type.