diff --git a/package-lock.json b/package-lock.json
index dfdc2c0..9139aa9 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -4,16 +4,273 @@
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@@ -70,11 +444,23 @@
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@@ -89,11 +475,168 @@
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+      "resolved": "https://registry.npmjs.org/static-extend/-/static-extend-0.1.2.tgz",
+      "integrity": "sha1-YICcOcv/VTNyJv1eC1IPNB8ftcY=",
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+        "object-copy": "^0.1.0"
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     "string-width": {
       "version": "3.0.0",
       "resolved": "https://registry.npmjs.org/string-width/-/string-width-3.0.0.tgz",
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       "integrity": "sha1-u0P/VZim6wXYm1n80SnJgzE2Br8="
     },
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+      "resolved": "https://registry.npmjs.org/supports-color/-/supports-color-5.5.0.tgz",
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+      "dev": true,
+      "requires": {
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+      }
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+      "resolved": "https://registry.npmjs.org/text-encoding/-/text-encoding-0.6.4.tgz",
+      "integrity": "sha1-45mpgiV6J22uQou5KEXLcb3CbRk=",
+      "dev": true
+    },
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+      "version": "0.3.0",
+      "resolved": "https://registry.npmjs.org/to-object-path/-/to-object-path-0.3.0.tgz",
+      "integrity": "sha1-KXWIt7Dn4KwI4E5nL4XB9JmeF68=",
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+          "requires": {
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+          }
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+      }
+    },
+    "to-regex": {
+      "version": "3.0.2",
+      "resolved": "https://registry.npmjs.org/to-regex/-/to-regex-3.0.2.tgz",
+      "integrity": "sha512-FWtleNAtZ/Ki2qtqej2CXTOayOH9bHDQF+Q48VpWyDXjbYxA4Yz8iDB31zXOBUlOHHKidDbqGVrTUvQMPmBGBw==",
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+        "regex-not": "^1.0.2",
+        "safe-regex": "^1.1.0"
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+      "integrity": "sha1-2pN/emLiH+wf0Y1Js1wpNQZ6bHI=",
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diff --git a/package.json b/package.json
index b5c2eec..c2c65d5 100644
--- a/package.json
+++ b/package.json
@@ -5,7 +5,7 @@
 	"main": "esmboot.js",
 	"module": "index.js",
 	"scripts": {
-		"test": "echo \"Error: no test specified\" && exit 1"
+		"test": "mocha -r esm --recursive tests"
 	},
 	"bin": "esmboot.js",
 	"keywords": [],
@@ -20,5 +20,10 @@
 		"esm": "^3.2.5",
 		"fast-clone": "^1.5.3",
 		"yargs": "^13.2.0"
+	},
+	"devDependencies": {
+		"expect": "^24.1.0",
+		"mocha": "^5.2.0",
+		"sinon": "^7.2.3"
 	}
 }