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index 838273b9..d0de24aa 100644
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 "sources":["src/plain/plain.js","src/helper/utils.js","src/helper/data-layer-helper.js","node_modules/google-closure-library/closure/goog/base.js"],
-"names":["TYPE_RE_","type","value","String","match","exec","Object","prototype","toString","call","toLowerCase","hasOwn","key","hasOwnProperty","isPlainObject","nodeType","window","constructor","e","undefined","expandKeyValue","result","target","split","i","length","merge","from","to","allowMerge","property","fromProperty","DataLayerHelper","dataLayer","options","listenToPast","dataLayer_","listener_","listenToPast_","executingListener_","model_","unprocessed_","commandProcessors_","abstractModelInterface_","buildAbstractModelInterface_","process","processStates_","registerProcessor","arguments","model","obj","oldPush","push","that","this.dataLayer_.push","states","slice","apply","get","flatten","splice","name","processor","skipListener","update","shift","path","method","pop","args","processArguments_","callback","goog.exportProperty","publicName","dataLayerHelper","set"]
+"names":["TYPE_RE_","type","value","String","match","exec","Object","prototype","toString","call","toLowerCase","hasOwn","key","hasOwnProperty","isPlainObject","nodeType","window","constructor","e","undefined","expandKeyValue","result","target","split","i","length","merge","from","to","allowMerge","property","fromProperty","DataLayerHelper","dataLayer","options","listenToPast","dataLayer_","listener_","listenToPast_","executingListener_","model_","unprocessed_","commandProcessors_","abstractModelInterface_","buildAbstractModelInterface_","process","registerProcessor","toMerge","arguments","processStates_","oldPush","push","that","this.dataLayer_.push","states","slice","apply","get","flatten","splice","name","processor","skipListener","update","shift","path","method","pop","args","processArguments_","callback","goog.exportProperty","publicName","dataLayerHelper","set"]
 }
diff --git a/src/helper/data-layer-helper.js b/src/helper/data-layer-helper.js
index 13774e9a..7280f5eb 100755
--- a/src/helper/data-layer-helper.js
+++ b/src/helper/data-layer-helper.js
@@ -184,23 +184,20 @@ class DataLayerHelper {
         `run a single time to prepare the helper.`, LogLevel.ERROR);
     }
 
-    // Process the existing/past states.
-    this.processStates_(this.dataLayer_, !(this.listenToPast_));
-
     // Register a processor for set command.
     this.registerProcessor('set', function() {
-      const model = this;
-
+      let toMerge = {};
       if (arguments.length === 1 && type(arguments[0]) === 'object') {
-        merge(arguments[0], model);
-      } else if (arguments.length === 2 &&
-          type(arguments[0]) === 'string') {
+        toMerge = arguments[0];
+      } else if (arguments.length === 2 && type(arguments[0]) === 'string') {
         // Maintain consistency with how objects are merged
         // outside of the set command (overwrite or recursively merge).
-        const obj = expandKeyValue(arguments[0], arguments[1]);
-        merge(obj, model);
+        toMerge = expandKeyValue(arguments[0], arguments[1]);
       }
+      return toMerge;
     });
+    // Process the existing/past states.
+    this.processStates_(this.dataLayer_, !(this.listenToPast_));
 
     // Mark helper as having been processed.
     this.processed_ = true;
diff --git a/test/process_test.js b/test/process_test.js
index d0258747..086289fb 100644
--- a/test/process_test.js
+++ b/test/process_test.js
@@ -39,4 +39,27 @@ describe('The `process` function of helper', () => {
 
     expect(helper.processed_).toBe(true);
   });
+
+  describe('with the built in set command', function() {
+    let commandAPI;
+    beforeEach(() => {
+      commandAPI = function() {
+        dataLayer.push(arguments);
+      };
+    });
+
+    it('registers set commands pushed before process', () => {
+      commandAPI('set', 'two', 2);
+      helper.process();
+
+      expect(helper.get('two')).toBe(2);
+    });
+
+    it('registers set commands pushed after process', () => {
+      helper.process();
+      commandAPI('set', 'two', 2);
+
+      expect(helper.get('two')).toBe(2);
+    });
+  });
 });
diff --git a/test/setCommand_test.js b/test/setCommand_test.js
index 3f42fb8c..da89b60f 100644
--- a/test/setCommand_test.js
+++ b/test/setCommand_test.js
@@ -18,8 +18,7 @@ describe('The set command', () => {
   beforeEach(() => {
     dataLayer = [];
     dlh = new DataLayerHelper(dataLayer);
-    commandAPI('set', 'bar', 'foo');
-    targetModel = Object.assign({}, dlh.abstractModelInterface_);
+    targetModel = {};
   });
 
   describe('with 2 argument format', () => {
@@ -27,39 +26,39 @@ describe('The set command', () => {
       commandAPI('set', 'foo', 'bar');
       targetModel['foo'] = 'bar';
 
-      expect(dlh.abstractModelInterface_).toEqual(targetModel);
+      expect(dlh.model_).toEqual(targetModel);
     });
 
     it('updates model using dot-notation without corrupting it.', () => {
       commandAPI('set', 'foobar.barfoo.val', 'testVal');
       targetModel['foobar'] = {'barfoo': {'val': 'testVal'}};
 
-      expect(dlh.abstractModelInterface_).toEqual(targetModel);
+      expect(dlh.model_).toEqual(targetModel);
     });
 
-    it('results in no-op with unecpected number of arguments(0 args)', () => {
+    it('results in no-op with unexpected number of arguments(0 args)', () => {
       commandAPI('set');
 
-      expect(dlh.abstractModelInterface_).toEqual(targetModel);
+      expect(dlh.model_).toEqual(targetModel);
     });
 
-    it('results in no-op with unecpected number of arguments: 3 args', () => {
+    it('results in no-op with unexpected number of arguments: 3 args', () => {
       commandAPI('set', 'foo', 'bar', 'extra');
 
-      expect(dlh.abstractModelInterface_).toEqual(targetModel);
+      expect(dlh.model_).toEqual(targetModel);
     });
 
-    it('results in no-op with an unecpected type for 1st argument', () => {
+    it('results in no-op with an unexpected type for 1st argument', () => {
       commandAPI('set', 2, 'bar');
 
-      expect(dlh.abstractModelInterface_).toEqual(targetModel);
+      expect(dlh.model_).toEqual(targetModel);
     });
 
     it('updates existing key with new val', () => {
       commandAPI('set', 'foo', 'newBar');
       targetModel['foo'] = 'newBar';
 
-      expect(dlh.abstractModelInterface_).toEqual(targetModel);
+      expect(dlh.model_).toEqual(targetModel);
     });
   });
 
@@ -69,20 +68,20 @@ describe('The set command', () => {
           commandAPI('set', {'yes': 'no'});
           targetModel['yes'] = 'no';
 
-          expect(dlh.abstractModelInterface_).toEqual(targetModel);
-        }
+          expect(dlh.model_).toEqual(targetModel);
+        },
     );
 
     it('updates model without corruption with multiple key-val pairs',
         () => {
           commandAPI('set',
-            {'yes': 'no', 'hello': 'world', 'goodbye': 'bluesky'});
+              {'yes': 'no', 'hello': 'world', 'goodbye': 'bluesky'});
           targetModel['yes'] = 'no';
           targetModel['hello'] = 'world';
           targetModel['goodbye'] = 'bluesky';
 
-          expect(dlh.abstractModelInterface_).toEqual(targetModel);
-        }
+          expect(dlh.model_).toEqual(targetModel);
+        },
     );
 
     it('updates model without corruption with nested key-val pairs',
@@ -90,13 +89,13 @@ describe('The set command', () => {
           commandAPI('set', {'yes': {'yes': 'no', 'no': 'yes'}});
           targetModel['yes'] = {'yes': 'no', 'no': 'yes'};
 
-          expect(dlh.abstractModelInterface_).toEqual(targetModel);
+          expect(dlh.model_).toEqual(targetModel);
 
           commandAPI('set', {'yes': {'yes': 'yes'}});
           targetModel['yes'] = {'yes': 'yes', 'no': 'yes'};
 
-          expect(dlh.abstractModelInterface_).toEqual(targetModel);
-        }
+          expect(dlh.model_).toEqual(targetModel);
+        },
     );
 
     it('updates model by merging existing array with a new one',
@@ -104,7 +103,7 @@ describe('The set command', () => {
           commandAPI('set', {'array': [1, 2, 3]});
           targetModel['array'] = [1, 2, 3];
 
-          expect(dlh.abstractModelInterface_).toEqual(targetModel);
+          expect(dlh.model_).toEqual(targetModel);
 
           const testArray = [];
           testArray[3] = 4;
@@ -113,14 +112,14 @@ describe('The set command', () => {
           commandAPI('set', {'array': testArray});
           targetModel['array'] = [1, 2, 3, 4, 5, 6];
 
-          expect(dlh.abstractModelInterface_).toEqual(targetModel);
+          expect(dlh.model_).toEqual(targetModel);
 
           const testArray2 = [undefined, undefined, undefined];
           commandAPI('set', {'array': testArray2});
           targetModel['array'] = [undefined, undefined, undefined, 4, 5, 6];
 
-          expect(dlh.abstractModelInterface_).toEqual(targetModel);
-        }
+          expect(dlh.model_).toEqual(targetModel);
+        },
     );
 
     it('updates model by merging existing object with a new one',
@@ -128,21 +127,39 @@ describe('The set command', () => {
           commandAPI('set', {'object': {'test': 'value'}});
           targetModel['object'] = {'test': 'value'};
 
-          expect(dlh.abstractModelInterface_).toEqual(targetModel);
+          expect(dlh.model_).toEqual(targetModel);
 
           commandAPI('set', {'object': {'value': 'test'}});
           targetModel['object'] = {'value': 'test', 'test': 'value'};
 
-          expect(dlh.abstractModelInterface_).toEqual(targetModel);
-        }
+          expect(dlh.model_).toEqual(targetModel);
+        },
     );
 
     it('results in no-op when single argument is not an object',
         () => {
           commandAPI('set', 'no op');
 
-          expect(dlh.abstractModelInterface_).toEqual(targetModel);
-        }
+          expect(dlh.model_).toEqual(targetModel);
+        },
     );
   });
+
+  it('does not modify the abstractModelInterface', () => {
+    commandAPI('set', 'a key', 'value');
+    commandAPI('set', {'b key': 'value'});
+
+    expect(dlh.abstractModelInterface_).toEqual({
+      get: jasmine.any(Function),
+      set: jasmine.any(Function),
+    });
+  });
+
+  it('creates values accessible by the abstract model interface', () => {
+    commandAPI('set', 'a key', 'value');
+    commandAPI('set', {'b key': 'value2'});
+
+    expect(dlh.abstractModelInterface_.get('a key')).toEqual('value');
+    expect(dlh.abstractModelInterface_.get('b key')).toEqual('value2');
+  });
 });