Create mem.js

+(function() {
+  var Gun = typeof window !== "undefined" ? window.Gun : require("gun");
+
+  Gun.on("opt", function(ctx) {
+    this.to.next(ctx);
+    var opt = ctx.opt;
+    if (ctx.once) {
+      return;
+    }
+    
+    var graph = ctx.graph,
+      acks = {},
+      count = 0,
+      to;
+
+    ctx.on("put", function(at) {
+      this.to.next(at);
+      Gun.graph.is(at.put, null, null);
+      if (!at["@"]) {
+        acks[at["#"]] = true;
+      } // only ack non-acks.
+      count += 1;
+      if (count >= (opt.batch || 10000)) {
+        return flush();
+      }
+      if (to) {
+        return;
+      }
+      to = setTimeout(flush, opt.wait || 1);
+    });
+
+    ctx.on("get", function(at) {
+      // this.to.next(at); //What does this do?
+      var lex = at.get,
+        soul,
+        data,
+        opt,
+        u;
+
+      if (!lex || !(soul = lex["#"])) {
+        return;
+      }
+      var field = lex["."];
+      if (data && field) {
+        data = Gun.state.to(data, field);
+      }
+      ctx.on("in", { "@": at["#"], put: Gun.graph.node(data) });
+    });
+
+    var wait;
+    var flush = function() {
+      if (wait) {
+        return;
+      }
+      wait = true;
+      clearTimeout(to);
+      to = false;
+      var ack = acks;
+      acks = {};
+    };
+  });
+})();