Inherit from SyntaxError
importance: 5
Create a class FormatError that inherits from the built-in SyntaxError class.
It should support message, name and stack properties.
Usage example:
let err = new FormatError("formatting error");
alert( err.message ); // formatting error
alert( err.name ); // FormatError
alert( err.stack ); // stack
alert( err instanceof FormatError ); // true
alert( err instanceof SyntaxError ); // true (because inherits from SyntaxError)
class FormatError extends SyntaxError {
constructor(message) {
super(message);
this.name = this.constructor.name;
}
}
let err = new FormatError("formatting error");
alert( err.message ); // formatting error
alert( err.name ); // FormatError
alert( err.stack ); // stack
alert( err instanceof SyntaxError ); // true