diff --git a/engine.js b/engine.js
new file mode 100644
index 00000000..b4d665c7
--- /dev/null
+++ b/engine.js
@@ -0,0 +1,107 @@
+"format cjs";
+
+var wrap = require('word-wrap');
+var objectAssign = require('object-assign');
+var objectValues = require('object-values');
+var forEach = require('lodash.foreach');
+var mapKeys = require('lodash.mapkeys');
+var mapValues = require('lodash.mapvalues');
+var rightPadKeys = require('right-pad-keys');
+var conventionalCommitTypes = require('conventional-commit-types');
+
+// This can be any kind of SystemJS compatible module.
+// We use Commonjs here, but ES6 or AMD would do just
+// fine.
+module.exports = function (options) {
+
+  options = options || {};
+
+  var types = objectAssign({}, options.types || conventionalCommitTypes.types);
+  forEach(types, function (type, key) {
+    type.key = key;
+  });
+  types = mapKeys(types, function (type, key) {
+    return key + ':';
+  });
+  types = rightPadKeys(types);
+
+  var choices = mapValues(types, function (type, key) {
+    return {
+      name: key + ' ' + type.description,
+      value: type.key
+    };
+  });
+  choices = objectValues(choices);
+
+  return {
+    // When a user runs `git cz`, prompter will
+    // be executed. We pass you cz, which currently
+    // is just an instance of inquirer.js. Using
+    // this you can ask questions and get answers.
+    //
+    // The commit callback should be executed when
+    // you're ready to send back a commit template
+    // to git.
+    //
+    // By default, we'll de-indent your commit
+    // template and will keep empty lines.
+    prompter: function(cz, commit) {
+      console.log('\nLine 1 will be cropped at 100 characters. All other lines will be wrapped after 100 characters.\n');
+
+      // Let's ask some questions of the user
+      // so that we can populate our commit
+      // template.
+      //
+      // See inquirer.js docs for specifics.
+      // You can also opt to use another input
+      // collection library if you prefer.
+      cz.prompt([
+        {
+          type: 'list',
+          name: 'type',
+          message: 'Select the type of change that you\'re committing:',
+          choices: choices
+        }, {
+          type: 'input',
+          name: 'scope',
+          message: 'Denote the scope of this change ($location, $browser, $compile, etc.):\n'
+        }, {
+          type: 'input',
+          name: 'subject',
+          message: 'Write a short, imperative tense description of the change:\n'
+        }, {
+          type: 'input',
+          name: 'body',
+          message: 'Provide a longer description of the change:\n'
+        }, {
+          type: 'input',
+          name: 'footer',
+          message: 'List any breaking changes or issues closed by this change:\n'
+        }
+      ]).then(function(answers) {
+
+        var maxLineWidth = 100;
+
+        var wrapOptions = {
+          trim: true,
+          newline: '\n',
+          indent:'',
+          width: maxLineWidth
+        };
+
+        // parentheses are only needed when a scope is present
+        var scope = answers.scope.trim();
+        scope = scope ? '(' + answers.scope.trim() + ')' : '';
+
+        // Hard limit this line
+        var head = (answers.type + scope + ': ' + answers.subject.trim()).slice(0, maxLineWidth);
+
+        // Wrap these lines at 100 characters
+        var body = wrap(answers.body, wrapOptions);
+        var footer = wrap(answers.footer, wrapOptions);
+
+        commit(head + '\n\n' + body + '\n\n' + footer);
+      });
+    }
+  };
+};
diff --git a/index.js b/index.js
index fae73161..ae1b32f5 100644
--- a/index.js
+++ b/index.js
@@ -1,104 +1,5 @@
 "format cjs";
 
-var wrap = require('word-wrap');
+var engine = require('./engine');
 
-// This can be any kind of SystemJS compatible module.
-// We use Commonjs here, but ES6 or AMD would do just
-// fine.
-module.exports = {
-
-  // When a user runs `git cz`, prompter will
-  // be executed. We pass you cz, which currently
-  // is just an instance of inquirer.js. Using
-  // this you can ask questions and get answers.
-  //
-  // The commit callback should be executed when
-  // you're ready to send back a commit template
-  // to git.
-  //
-  // By default, we'll de-indent your commit
-  // template and will keep empty lines.
-  prompter: function(cz, commit) {
-    console.log('\nLine 1 will be cropped at 100 characters. All other lines will be wrapped after 100 characters.\n');
-
-    // Let's ask some questions of the user
-    // so that we can populate our commit
-    // template.
-    //
-    // See inquirer.js docs for specifics.
-    // You can also opt to use another input
-    // collection library if you prefer.
-    cz.prompt([
-      {
-        type: 'list',
-        name: 'type',
-        message: 'Select the type of change that you\'re committing:',
-        choices: [
-        {
-          name: 'feat:     A new feature',
-          value: 'feat'
-        }, {
-          name: 'fix:      A bug fix',
-          value: 'fix'
-        }, {
-          name: 'docs:     Documentation only changes',
-          value: 'docs'
-        }, {
-          name: 'style:    Changes that do not affect the meaning of the code\n            (white-space, formatting, missing semi-colons, etc.)',
-          value: 'style'
-        }, {
-          name: 'refactor: A code change that neither fixes a bug or adds a feature',
-          value: 'refactor'
-        }, {
-          name: 'perf:     A code change that improves performance',
-          value: 'perf'
-        }, {
-          name: 'test:     Adding missing tests',
-          value: 'test'
-        }, {
-          name: 'chore:    Changes to the build process or auxiliary tools\n            and libraries such as documentation generation',
-          value: 'chore'
-        }]
-      }, {
-        type: 'input',
-        name: 'scope',
-        message: 'Denote the scope of this change ($location, $browser, $compile, etc.):\n'
-      }, {
-        type: 'input',
-        name: 'subject',
-        message: 'Write a short, imperative tense description of the change:\n'
-      }, {
-        type: 'input',
-        name: 'body',
-        message: 'Provide a longer description of the change:\n'
-      }, {
-        type: 'input',
-        name: 'footer',
-        message: 'List any breaking changes or issues closed by this change:\n'
-      }
-    ]).then(function(answers) {
-
-      var maxLineWidth = 100;
-
-      var wrapOptions = {
-        trim: true,
-        newline: '\n',
-        indent:'',
-        width: maxLineWidth
-      };
-
-      // parentheses are only needed when a scope is present
-      var scope = answers.scope.trim();
-      scope = scope ? '(' + answers.scope.trim() + ')' : '';
-
-      // Hard limit this line
-      var head = (answers.type + scope + ': ' + answers.subject.trim()).slice(0, maxLineWidth);
-
-      // Wrap these lines at 100 characters
-      var body = wrap(answers.body, wrapOptions);
-      var footer = wrap(answers.footer, wrapOptions);
-
-      commit(head + '\n\n' + body + '\n\n' + footer);
-    });
-  }
-}
+module.exports = engine();
diff --git a/package.json b/package.json
index 11106424..c17a013d 100644
--- a/package.json
+++ b/package.json
@@ -16,6 +16,13 @@
   "author": "Jim Cummins <jimthedev@gmail.com>",
   "license": "MIT",
   "dependencies": {
+    "conventional-commit-types": "^2.0.0",
+    "lodash.foreach": "^4.4.1",
+    "lodash.mapkeys": "^4.5.1",
+    "lodash.mapvalues": "^4.5.1",
+    "object-assign": "^4.1.0",
+    "object-values": "^1.0.0",
+    "right-pad-keys": "^0.1.2",
     "word-wrap": "^1.0.3"
   },
   "devDependencies": {