I am trying to Overwrite some function from `Magento_Swatches/js/SwatchRenderer.js` file 

My code is for `requirejs-config.js`:

```
var config = {
    config: {
        mixins: {
            'Magento_Swatches/js/SwatchRenderer': {
                'Magento_Swatches/js/SwatchRendererCategory1': true
            }
        }
    }
};

```

And code for file `SwatchRendererCategory1.js`

```
define(function () {
'use strict';

var mixin = {
        updateBaseImage: function (images, context, isProductViewExist) {
            var justAnImage = images[0];

            if (isProductViewExist) {
                context
                    .find('[data-gallery-role=gallery-placeholder]')
                    .data('gallery')
                    .updateData(images);
            } else if (justAnImage && justAnImage.img) {
                context.find('.image-block').css("background-image", "url('"+justAnImage.img+"')");
            }
        }
};

return function (target) {
    return target.extend(mixin);
};});

```

What I should use for `target` in this case?
Thank you.