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Error Object

Errors in JavaScript, like Go, are called Errors. It sure beats a silly name like "Exceptions"...

The most important property on the built-in error object is the message property: which should be a human-readable description of the error.

const err = new Error("We've run out of baked salmon");
console.log(err.message);
// We've run out of baked salmon

Assignment

Error messages at Textio have Error: in front of them. Convenient, right? Wrong. The devs keep forgetting to add it, so upper management has come up with a brilliant plan. A factory function that takes a string and returns a new Error object with 'Error: ' prepended to the message.

For example:

const err = createError("Boots is hungry");
console.log(err.message);
// Error: Boots is hungry

Surely this will solve all of their problems.

Implement the createError function.