Function memberSetterProxy

sqlite-wasm-cos/sqlite3-node.mjs:10370–10374

(si)

     function), else return undefined.
  */
  const memberSetterProxy = function(si){
    return si.set || (si.adaptSet
                      ? StructBinder.adaptSet(si.adaptSet)
                      : undefined);
  };

  /**
     To be called by makeMemberWrapper() when si has a 'members'