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Mapped JavaScript Class

A local Slice exception is mapped to a JavaScript class with the same name. For example:

module Ice
{
    local exception InitializationException
    {
        ...
    }
}

is mapped to the JavaScript class InitializationException:

class InitializationException extends Ice.LocalException
{
    ...
};

Base Class for Local Exceptions in JavaScript

All mapped JavaScript classes for local exceptions extend the class Ice.LocalException:

class LocalException extends Exception
{
    ...
};

LocalException derives from Ice.Exception, which derives from JavaScript's native Error class.

Mapping for Local Exception Inheritance in JavaScript

A local Slice exception can extend another Slice exception, which is mapped to class inheritance in JavaScript. For example:

module M
{
    local exception ErrorBase {}
    local exception ResourceError extends ErrorBase {}
}

is mapped to:

class ErrorBase extends Ice.LocalException
{
    ...
};
class ResourceError extends ErrorBase
{
    ...
};