im noob

it is possible?

var typeSet = {

    jBinary.all:'msh',

    msh: {
        artworks: ['string0', 9],
        version: ['array', 'uint8', 8],
        indices: ['array', 'uint8', 8],

        versionName: ['string0', 'indices[4]']
    }
};

‘indices[4]’ as variable

[RReverser]

Now I see. No, you can’t use ['string0', 'indices[4]'] directly, but you can pass a function from context as a second argument, see https://github.com/jDataView/jBinary/wiki/Standard-types#references for an example.

In your case, it will be smth like:

    msh: {
        artworks: ['string0', 9],
        version: ['array', 'uint8', 8],
        indices: ['array', 'uint8', 8],

        versionName: ['string0', function (context) {
            return context.indices[4];
        });
    }

or, if using ES6, ['string0', context => context.indices[4]].

Does this answer your question?

[RReverser]

I don’t know what you’re trying to achieve, so can’t answer your question. Also, please format your code using Markdown for better readability (wrap between ````javascript` and ````` lines).