From c2edf29405459f225bff767da7eae061b39a94b3 Mon Sep 17 00:00:00 2001
From: Alex Li <7alex7li@gmail.com>
Date: Wed, 5 Aug 2020 13:58:56 -0400
Subject: [PATCH 1/4] Fixed bug with set saving to the wrong object and set not
 running before process was called

---
 dist/data-layer-helper.js     | 10 ++++-----
 dist/data-layer-helper.js.map |  4 ++--
 src/helper/helper.js          | 23 ++++++++++----------
 test/process_test.js          | 23 ++++++++++++++++++++
 test/setCommand_test.js       | 41 +++++++++++++++++------------------
 5 files changed, 61 insertions(+), 40 deletions(-)

diff --git a/dist/data-layer-helper.js b/dist/data-layer-helper.js
index 031b632b..672bb4f6 100644
--- a/dist/data-layer-helper.js
+++ b/dist/data-layer-helper.js
@@ -10,8 +10,8 @@
 var f=/\[object (Boolean|Number|String|Function|Array|Date|RegExp|Arguments)\]/;function g(a){return null==a?String(a):(a=f.exec(Object.prototype.toString.call(Object(a))))?a[1].toLowerCase():"object"}function k(a,b){return Object.prototype.hasOwnProperty.call(Object(a),b)}function m(a){if(!a||"object"!=g(a)||a.nodeType||a==a.window)return!1;try{if(a.constructor&&!k(a,"constructor")&&!k(a.constructor.prototype,"isPrototypeOf"))return!1}catch(c){return!1}for(var b in a);return void 0===b||k(a,b)};/*
  Copyright 2012 Google Inc. All rights reserved. */
 function p(a,b,c){b=void 0===b?{}:b;"function"===typeof b?b={listener:b,j:void 0===c?!1:c,l:!0,h:{}}:b={listener:b.listener||function(){},j:b.listenToPast||!1,l:void 0===b.processNow?!0:b.processNow,h:b.commandProcessors||{}};this.a=a;this.o=b.listener;this.m=b.j;this.g=!1;this.c={};this.f=[];this.b=b.h;this.i=q(this);b.l&&this.process()}
-p.prototype.process=function(){r(this,this.a,!this.m);this.registerProcessor("set",function(){if(1===arguments.length&&"object"===g(arguments[0]))u(arguments[0],this);else if(2===arguments.length&&"string"===g(arguments[0])){var c=v(arguments[0],arguments[1]);u(c,this)}});var a=this.a.push,b=this;this.a.push=function(){var c=[].slice.call(arguments,0),d=a.apply(b.a,c);r(b,c);return d}};
-p.prototype.get=function(a){var b=this.c;a=a.split(".");for(var c=0;c<a.length;c++){if(void 0===b[a[c]])return;b=b[a[c]]}return b};p.prototype.flatten=function(){this.a.splice(0,this.a.length);this.a[0]={};u(this.c,this.a[0])};p.prototype.registerProcessor=function(a,b){a in this.b||(this.b[a]=[]);this.b[a].push(b)};
-function r(a,b,c){c=void 0===c?!1:c;for(a.f.push.apply(a.f,b);!1===a.g&&0<a.f.length;){b=a.f.shift();if("array"===g(b))a:{var d=a.c;g(b[0]);for(var e=b[0].split("."),n=e.pop(),l=b.slice(1),h=0;h<e.length;h++){if(void 0===d[e[h]])break a;d=d[e[h]]}try{d[n].apply(d,l)}catch(w){}}else if("arguments"===g(b)){e=a;n=[];l=b[0];if(e.b[l])for(d=e.b[l].length,h=0;h<d;h++)n.push(e.b[l][h].apply(e.i,[].slice.call(b,1)));a.f.push.apply(a.f,n)}else if("function"==typeof b)try{b.call(a.i)}catch(w){}else if(m(b))for(var t in b)u(v(t,
-b[t]),a.c);else continue;c||(a.g=!0,a.o(a.c,b),a.g=!1)}}p.prototype.registerProcessor=p.prototype.registerProcessor;p.prototype.flatten=p.prototype.flatten;p.prototype.get=p.prototype.get;p.prototype.process=p.prototype.process;window.DataLayerHelper=p;function q(a){return{set:function(b,c){u(v(b,c),a.c)},get:function(b){return a.get(b)}}}function v(a,b){var c={},d=c;a=a.split(".");for(var e=0;e<a.length-1;e++)d=d[a[e]]={};d[a[a.length-1]]=b;return c}
-function u(a,b){var c=!a._clear,d;for(d in a)if(k(a,d)){var e=a[d];"array"===g(e)&&c?("array"===g(b[d])||(b[d]=[]),u(e,b[d])):m(e)&&c?(m(b[d])||(b[d]={}),u(e,b[d])):b[d]=e}delete b._clear};})();
+p.prototype.process=function(){this.registerProcessor("set",function(){var c={};1===arguments.length&&"object"===g(arguments[0])?c=arguments[0]:2===arguments.length&&"string"===g(arguments[0])&&(c=r(arguments[0],arguments[1]));return c});u(this,this.a,!this.m);var a=this.a.push,b=this;this.a.push=function(){var c=[].slice.call(arguments,0),d=a.apply(b.a,c);u(b,c);return d}};p.prototype.get=function(a){var b=this.c;a=""===a?[]:a.split(".");for(var c=0;c<a.length;c++){if(void 0===b[a[c]])return;b=b[a[c]]}return b};
+p.prototype.flatten=function(){this.a.splice(0,this.a.length);this.a[0]={};v(this.c,this.a[0])};p.prototype.registerProcessor=function(a,b){a in this.b||(this.b[a]=[]);this.b[a].push(b)};
+function u(a,b,c){c=void 0===c?!1:c;for(a.f.push.apply(a.f,b);!1===a.g&&0<a.f.length;){b=a.f.shift();if("array"===g(b))a:{var d=a.c;g(b[0]);for(var e=b[0].split("."),n=e.pop(),l=b.slice(1),h=0;h<e.length;h++){if(void 0===d[e[h]])break a;d=d[e[h]]}try{d[n].apply(d,l)}catch(w){}}else if("arguments"===g(b)){e=a;n=[];l=b[0];if(e.b[l])for(d=e.b[l].length,h=0;h<d;h++)n.push(e.b[l][h].apply(e.i,[].slice.call(b,1)));a.f.push.apply(a.f,n)}else if("function"==typeof b)try{b.call(a.i)}catch(w){}else if(m(b))for(var t in b)v(r(t,
+b[t]),a.c);else continue;c||(a.g=!0,a.o(a.c,b),a.g=!1)}}p.prototype.registerProcessor=p.prototype.registerProcessor;p.prototype.flatten=p.prototype.flatten;p.prototype.get=p.prototype.get;p.prototype.process=p.prototype.process;window.DataLayerHelper=p;function q(a){return{set:function(b,c){v(r(b,c),a.c)},get:function(b){return a.get(b)}}}function r(a,b){var c={},d=c;a=a.split(".");for(var e=0;e<a.length-1;e++)d=d[a[e]]={};d[a[a.length-1]]=b;return c}
+function v(a,b){var c=!a._clear,d;for(d in a)if(k(a,d)){var e=a[d];"array"===g(e)&&c?("array"===g(b[d])||(b[d]=[]),v(e,b[d])):m(e)&&c?(m(b[d])||(b[d]={}),v(e,b[d])):b[d]=e}delete b._clear};})();
diff --git a/dist/data-layer-helper.js.map b/dist/data-layer-helper.js.map
index 2f289d04..85a9101d 100644
--- a/dist/data-layer-helper.js.map
+++ b/dist/data-layer-helper.js.map
@@ -2,7 +2,7 @@
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 "sources":["src/plain/is_plain_object.js","src/helper/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","dataLayer","options","listenToPast","listener","processNow","commandProcessors","dataLayer_","listener_","listenToPast_","executingListener_","model_","unprocessed_","commandProcessors_","abstractModelInterface_","buildAbstractModelInterface_","process","module$exports$helper.DataLayerHelper","processStates_","registerProcessor","arguments","length","merge_","model","obj","expandKeyValue_","oldPush","push","that","this.dataLayer_.push","states","slice","result","apply","get","target","split","i","flatten","splice","name","processor","skipListener","update","shift","path","method","pop","args","processArguments_","callback","goog.exportProperty","publicName","dataLayerHelper","set","from","to","allowMerge","property","fromProperty"]
+"names":["TYPE_RE_","type","value","String","match","exec","Object","prototype","toString","call","toLowerCase","hasOwn","key","hasOwnProperty","isPlainObject","nodeType","window","constructor","e","undefined","dataLayer","options","listenToPast","listener","processNow","commandProcessors","dataLayer_","listener_","listenToPast_","executingListener_","model_","unprocessed_","commandProcessors_","abstractModelInterface_","buildAbstractModelInterface_","process","module$exports$helper.DataLayerHelper","registerProcessor","toMerge","arguments","length","expandKeyValue_","processStates_","oldPush","push","that","this.dataLayer_.push","states","slice","result","apply","get","target","split","i","flatten","splice","merge_","name","processor","skipListener","update","shift","path","method","pop","args","processArguments_","callback","goog.exportProperty","publicName","dataLayerHelper","set","from","to","allowMerge","property","fromProperty"]
 }
diff --git a/src/helper/helper.js b/src/helper/helper.js
index 644081f1..09800b91 100755
--- a/src/helper/helper.js
+++ b/src/helper/helper.js
@@ -96,7 +96,8 @@ class DataLayerHelper {
       };
     } else {
       options = {
-        listener: options['listener'] || (() => {}),
+        listener: options['listener'] || (() => {
+        }),
         listenToPast: options['listenToPast'] || false,
         processNow: options['processNow'] === undefined ?
             true : options['processNow'],
@@ -183,26 +184,24 @@ class DataLayerHelper {
   process() {
     if (this.processed_) {
       logError(`Process has already been ran. This method should only ` +
-        `run a single time to prepare the helper.`, LogLevel.ERROR);
+          `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);
+        toMerge = arguments[0];
       } else if (arguments.length === 2 &&
-        type(arguments[0]) === 'string') {
+          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;
@@ -229,7 +228,7 @@ class DataLayerHelper {
    */
   get(key) {
     let target = this.model_;
-    const split = key.split('.');
+    const split = key === '' ? [] : key.split('.');
     for (let i = 0; i < split.length; i++) {
       if (target[split[i]] === undefined) return undefined;
       target = target[split[i]];
diff --git a/test/process_test.js b/test/process_test.js
index 8dd8ce02..60136b1f 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 62e5fffe..f8310d3c 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.get('')).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.get('')).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.get('')).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.get('')).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.get('')).toEqual(targetModel);
     });
 
     it('updates existing key with new val', () => {
       commandAPI('set', 'foo', 'newBar');
       targetModel['foo'] = 'newBar';
 
-      expect(dlh.abstractModelInterface_).toEqual(targetModel);
+      expect(dlh.get('')).toEqual(targetModel);
     });
   });
 
@@ -69,7 +68,7 @@ describe('The set command', () => {
           commandAPI('set', {'yes': 'no'});
           targetModel['yes'] = 'no';
 
-          expect(dlh.abstractModelInterface_).toEqual(targetModel);
+          expect(dlh.get('')).toEqual(targetModel);
         }
     );
 
@@ -81,7 +80,7 @@ describe('The set command', () => {
           targetModel['hello'] = 'world';
           targetModel['goodbye'] = 'bluesky';
 
-          expect(dlh.abstractModelInterface_).toEqual(targetModel);
+          expect(dlh.get('')).toEqual(targetModel);
         }
     );
 
@@ -90,12 +89,12 @@ describe('The set command', () => {
           commandAPI('set', {'yes': {'yes': 'no', 'no': 'yes'}});
           targetModel['yes'] = {'yes': 'no', 'no': 'yes'};
 
-          expect(dlh.abstractModelInterface_).toEqual(targetModel);
+          expect(dlh.get('')).toEqual(targetModel);
 
           commandAPI('set', {'yes': {'yes': 'yes'}});
           targetModel['yes'] = {'yes': 'yes', 'no': 'yes'};
 
-          expect(dlh.abstractModelInterface_).toEqual(targetModel);
+          expect(dlh.get('')).toEqual(targetModel);
         }
     );
 
@@ -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.get('')).toEqual(targetModel);
 
           const testArray = [];
           testArray[3] = 4;
@@ -113,13 +112,13 @@ describe('The set command', () => {
           commandAPI('set', {'array': testArray});
           targetModel['array'] = [1, 2, 3, 4, 5, 6];
 
-          expect(dlh.abstractModelInterface_).toEqual(targetModel);
+          expect(dlh.get('')).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.get('')).toEqual(targetModel);
         }
     );
 
@@ -128,12 +127,12 @@ describe('The set command', () => {
           commandAPI('set', {'object': {'test': 'value'}});
           targetModel['object'] = {'test': 'value'};
 
-          expect(dlh.abstractModelInterface_).toEqual(targetModel);
+          expect(dlh.get('')).toEqual(targetModel);
 
           commandAPI('set', {'object': {'value': 'test'}});
           targetModel['object'] = {'value': 'test', 'test': 'value'};
 
-          expect(dlh.abstractModelInterface_).toEqual(targetModel);
+          expect(dlh.get('')).toEqual(targetModel);
         }
     );
 
@@ -141,7 +140,7 @@ describe('The set command', () => {
         () => {
           commandAPI('set', 'no op');
 
-          expect(dlh.abstractModelInterface_).toEqual(targetModel);
+          expect(dlh.get('')).toEqual(targetModel);
         }
     );
   });

From e985adecf4ed2e0b9152622ac459cca467f77026 Mon Sep 17 00:00:00 2001
From: Alex Li <7alex7li@gmail.com>
Date: Wed, 5 Aug 2020 15:45:36 -0400
Subject: [PATCH 2/4] Remove get command feature

---
 src/helper/helper.js    |  2 +-
 test/setCommand_test.js | 47 +++++++++++++++++++++--------------------
 2 files changed, 25 insertions(+), 24 deletions(-)

diff --git a/src/helper/helper.js b/src/helper/helper.js
index 09800b91..ba56da04 100755
--- a/src/helper/helper.js
+++ b/src/helper/helper.js
@@ -228,7 +228,7 @@ class DataLayerHelper {
    */
   get(key) {
     let target = this.model_;
-    const split = key === '' ? [] : key.split('.');
+    const split = key.split('.');
     for (let i = 0; i < split.length; i++) {
       if (target[split[i]] === undefined) return undefined;
       target = target[split[i]];
diff --git a/test/setCommand_test.js b/test/setCommand_test.js
index f8310d3c..3afa507a 100644
--- a/test/setCommand_test.js
+++ b/test/setCommand_test.js
@@ -21,44 +21,45 @@ describe('The set command', () => {
     targetModel = {};
   });
 
+
   describe('with 2 argument format', () => {
     it('updates model without corrupting it.', () => {
       commandAPI('set', 'foo', 'bar');
       targetModel['foo'] = 'bar';
 
-      expect(dlh.get('')).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.get('')).toEqual(targetModel);
+      expect(dlh.model_).toEqual(targetModel);
     });
 
     it('results in no-op with unexpected number of arguments(0 args)', () => {
       commandAPI('set');
 
-      expect(dlh.get('')).toEqual(targetModel);
+      expect(dlh.model_).toEqual(targetModel);
     });
 
     it('results in no-op with unexpected number of arguments: 3 args', () => {
       commandAPI('set', 'foo', 'bar', 'extra');
 
-      expect(dlh.get('')).toEqual(targetModel);
+      expect(dlh.model_).toEqual(targetModel);
     });
 
     it('results in no-op with an unexpected type for 1st argument', () => {
       commandAPI('set', 2, 'bar');
 
-      expect(dlh.get('')).toEqual(targetModel);
+      expect(dlh.model_).toEqual(targetModel);
     });
 
     it('updates existing key with new val', () => {
       commandAPI('set', 'foo', 'newBar');
       targetModel['foo'] = 'newBar';
 
-      expect(dlh.get('')).toEqual(targetModel);
+      expect(dlh.model_).toEqual(targetModel);
     });
   });
 
@@ -68,20 +69,20 @@ describe('The set command', () => {
           commandAPI('set', {'yes': 'no'});
           targetModel['yes'] = 'no';
 
-          expect(dlh.get('')).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.get('')).toEqual(targetModel);
-        }
+          expect(dlh.model_).toEqual(targetModel);
+        },
     );
 
     it('updates model without corruption with nested key-val pairs',
@@ -89,13 +90,13 @@ describe('The set command', () => {
           commandAPI('set', {'yes': {'yes': 'no', 'no': 'yes'}});
           targetModel['yes'] = {'yes': 'no', 'no': 'yes'};
 
-          expect(dlh.get('')).toEqual(targetModel);
+          expect(dlh.model_).toEqual(targetModel);
 
           commandAPI('set', {'yes': {'yes': 'yes'}});
           targetModel['yes'] = {'yes': 'yes', 'no': 'yes'};
 
-          expect(dlh.get('')).toEqual(targetModel);
-        }
+          expect(dlh.model_).toEqual(targetModel);
+        },
     );
 
     it('updates model by merging existing array with a new one',
@@ -103,7 +104,7 @@ describe('The set command', () => {
           commandAPI('set', {'array': [1, 2, 3]});
           targetModel['array'] = [1, 2, 3];
 
-          expect(dlh.get('')).toEqual(targetModel);
+          expect(dlh.model_).toEqual(targetModel);
 
           const testArray = [];
           testArray[3] = 4;
@@ -112,14 +113,14 @@ describe('The set command', () => {
           commandAPI('set', {'array': testArray});
           targetModel['array'] = [1, 2, 3, 4, 5, 6];
 
-          expect(dlh.get('')).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.get('')).toEqual(targetModel);
-        }
+          expect(dlh.model_).toEqual(targetModel);
+        },
     );
 
     it('updates model by merging existing object with a new one',
@@ -127,21 +128,21 @@ describe('The set command', () => {
           commandAPI('set', {'object': {'test': 'value'}});
           targetModel['object'] = {'test': 'value'};
 
-          expect(dlh.get('')).toEqual(targetModel);
+          expect(dlh.model_).toEqual(targetModel);
 
           commandAPI('set', {'object': {'value': 'test'}});
           targetModel['object'] = {'value': 'test', 'test': 'value'};
 
-          expect(dlh.get('')).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.get('')).toEqual(targetModel);
-        }
+          expect(dlh.model_).toEqual(targetModel);
+        },
     );
   });
 });

From a360a96ac4eb98763066dfad17eb95dc19eb727d Mon Sep 17 00:00:00 2001
From: Alex Li <7alex7li@gmail.com>
Date: Fri, 7 Aug 2020 09:39:39 -0400
Subject: [PATCH 3/4] Update per dustin's comments

---
 src/helper/helper.js    |  6 ++----
 test/setCommand_test.js | 19 ++++++++++++++++++-
 2 files changed, 20 insertions(+), 5 deletions(-)

diff --git a/src/helper/helper.js b/src/helper/helper.js
index ba56da04..86ecd2ee 100755
--- a/src/helper/helper.js
+++ b/src/helper/helper.js
@@ -96,8 +96,7 @@ class DataLayerHelper {
       };
     } else {
       options = {
-        listener: options['listener'] || (() => {
-        }),
+        listener: options['listener'] || (() => {}),
         listenToPast: options['listenToPast'] || false,
         processNow: options['processNow'] === undefined ?
             true : options['processNow'],
@@ -192,8 +191,7 @@ class DataLayerHelper {
       let toMerge = {};
       if (arguments.length === 1 && type(arguments[0]) === 'object') {
         toMerge = arguments[0];
-      } else if (arguments.length === 2 &&
-          type(arguments[0]) === 'string') {
+      } 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).
         toMerge = expandKeyValue_(arguments[0], arguments[1]);
diff --git a/test/setCommand_test.js b/test/setCommand_test.js
index 3afa507a..1b9eaaca 100644
--- a/test/setCommand_test.js
+++ b/test/setCommand_test.js
@@ -21,7 +21,6 @@ describe('The set command', () => {
     targetModel = {};
   });
 
-
   describe('with 2 argument format', () => {
     it('updates model without corrupting it.', () => {
       commandAPI('set', 'foo', 'bar');
@@ -145,4 +144,22 @@ describe('The set command', () => {
         },
     );
   });
+
+  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');
+  });
 });

From f037e847afde673e5b905f120829a3553669e89d Mon Sep 17 00:00:00 2001
From: Alex Li <7alex7li@gmail.com>
Date: Mon, 10 Aug 2020 16:45:39 -0400
Subject: [PATCH 4/4] Fix indentation

---
 src/helper/data-layer-helper.js | 3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

diff --git a/src/helper/data-layer-helper.js b/src/helper/data-layer-helper.js
index 87ae6807..d5bdb5fc 100755
--- a/src/helper/data-layer-helper.js
+++ b/src/helper/data-layer-helper.js
@@ -192,8 +192,7 @@ class DataLayerHelper {
 
       if (arguments.length === 1 && type(arguments[0]) === 'object') {
         merge(arguments[0], model);
-      } else if (arguments.length === 2 &&
-          type(arguments[0]) === 'string') {
+      } 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]);