Function extendEncode

docs/app/js/sanddance-app.js:146860–146866

(encode, extra, skip)

    for(const name1 in update)addEncode(object, name1, update[name1], "update");
}
function extendEncode(encode, extra, skip) {
    for(const name in extra){
        if (skip && (0, _vegaUtil.hasOwnProperty)(skip, name)) continue;
        encode[name] = (0, _vegaUtil.extend)(encode[name] || {}, extra[name]);
    }
    return encode;
}
function has(key, encode) {
    return encode && (encode.enter && encode.enter[key] || encode.update && encode.update[key]);
}