// Throw generic Error
throw new Error("This is the error message");
// Throw more specific error types
throw new EvalError()
throw new RangeError()
throw new ReferenceError()
throw new SyntaxError()
throw new TypeError()
throw new URIError()
throw new AggregateError()
throw new InternaError() // Non-standard: Not for production sites
// Custom Error
class FooBarError extends Error {	constructor(message: string) {	super(message); } ...
}

throw new Error('Something bad occured');

var my_error : Error = new Error("Task failed successfully!");
throw my_error;