diff --git a/lib/index.js b/lib/index.js
index f7a934f..e14826c 100644
--- a/lib/index.js
+++ b/lib/index.js
@@ -1,11 +1,21 @@
-exports.CSSStyleDeclaration = require("./CSSStyleDeclaration").CSSStyleDeclaration;
-exports.CSSRule = require("./CSSRule").CSSRule;
-exports.CSSStyleRule = require("./CSSStyleRule").CSSStyleRule;
-exports.CSSImportRule = require("./CSSImportRule").CSSImportRule;
-exports.MediaList = require("./MediaList").MediaList;
-exports.CSSMediaRule = require("./CSSMediaRule").CSSMediaRule;
-exports.CSSFontFaceRule = require("./CSSFontFaceRule").CSSFontFaceRule;
-exports.StyleSheet = require("./StyleSheet").StyleSheet;
-exports.CSSStyleSheet = require("./CSSStyleSheet").CSSStyleSheet;
-exports.parse = require("./parse").parse;
-exports.clone = require("./clone").clone;
+'use strict';
+
+exports.CSSStyleDeclaration = require('./CSSStyleDeclaration').CSSStyleDeclaration;
+exports.CSSRule = require('./CSSRule').CSSRule;
+exports.CSSStyleRule = require('./CSSStyleRule').CSSStyleRule;
+exports.MediaList = require('./MediaList').MediaList;
+exports.CSSMediaRule = require('./CSSMediaRule').CSSMediaRule;
+exports.CSSSupportsRule = require('./CSSSupportsRule').CSSSupportsRule;
+exports.CSSImportRule = require('./CSSImportRule').CSSImportRule;
+exports.CSSFontFaceRule = require('./CSSFontFaceRule').CSSFontFaceRule;
+exports.CSSHostRule = require('./CSSHostRule').CSSHostRule;
+exports.StyleSheet = require('./StyleSheet').StyleSheet;
+exports.CSSStyleSheet = require('./CSSStyleSheet').CSSStyleSheet;
+exports.CSSKeyframesRule = require('./CSSKeyframesRule').CSSKeyframesRule;
+exports.CSSKeyframeRule = require('./CSSKeyframeRule').CSSKeyframeRule;
+exports.MatcherList = require('./MatcherList').MatcherList;
+exports.CSSDocumentRule = require('./CSSDocumentRule').CSSDocumentRule;
+exports.CSSValue = require('./CSSValue').CSSValue;
+exports.CSSValueExpression = require('./CSSValueExpression').CSSValueExpression;
+exports.parse = require('./parse').parse;
+exports.clone = require('./clone').clone;
diff --git a/package-lock.json b/package-lock.json
new file mode 100644
index 0000000..95fba4c
--- /dev/null
+++ b/package-lock.json
@@ -0,0 +1,46 @@
+{
+  "name": "cssom",
+  "version": "0.3.3",
+  "lockfileVersion": 1,
+  "requires": true,
+  "dependencies": {
+    "jake": {
+      "version": "0.7.20",
+      "resolved": "https://registry.npmjs.org/jake/-/jake-0.7.20.tgz",
+      "integrity": "sha1-c9L6Ny2bR18Rq+qm5/8w2VDBhrI=",
+      "dev": true,
+      "requires": {
+        "minimatch": "0.2.x",
+        "utilities": "0.0.x"
+      }
+    },
+    "lru-cache": {
+      "version": "2.7.3",
+      "resolved": "https://registry.npmjs.org/lru-cache/-/lru-cache-2.7.3.tgz",
+      "integrity": "sha1-bUUk6LlV+V1PW1iFHOId1y+06VI=",
+      "dev": true
+    },
+    "minimatch": {
+      "version": "0.2.14",
+      "resolved": "https://registry.npmjs.org/minimatch/-/minimatch-0.2.14.tgz",
+      "integrity": "sha1-x054BXT2PG+aCQ6Q775u9TpqdWo=",
+      "dev": true,
+      "requires": {
+        "lru-cache": "2",
+        "sigmund": "~1.0.0"
+      }
+    },
+    "sigmund": {
+      "version": "1.0.1",
+      "resolved": "https://registry.npmjs.org/sigmund/-/sigmund-1.0.1.tgz",
+      "integrity": "sha1-P/IfGYytIXX587eBhT/ZTQ0ZtZA=",
+      "dev": true
+    },
+    "utilities": {
+      "version": "0.0.40",
+      "resolved": "https://registry.npmjs.org/utilities/-/utilities-0.0.40.tgz",
+      "integrity": "sha1-MWhysoJFXV4oawKlz5HTH2UCemw=",
+      "dev": true
+    }
+  }
+}