diff --git a/package-lock.json b/package-lock.json
index a9e9b64..2937774 100644
--- a/package-lock.json
+++ b/package-lock.json
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@@ -8527,17 +8629,20 @@
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@@ -8564,6 +8669,7 @@
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@@ -8591,12 +8697,14 @@
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-      "integrity": "sha1-bAFq3qxVT3WCP+N6wFuS1aTtsfc="
+      "integrity": "sha1-bAFq3qxVT3WCP+N6wFuS1aTtsfc=",
+      "dev": true
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+      "dev": true,
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@@ -8604,7 +8712,8 @@
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-          "integrity": "sha1-597mbjXW/Bb3EP6R1c9p9w8IkR0="
+          "integrity": "sha1-597mbjXW/Bb3EP6R1c9p9w8IkR0=",
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@@ -8630,6 +8739,7 @@
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+      "dev": true,
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@@ -8815,7 +8925,8 @@
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@@ -8867,7 +8978,8 @@
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-      "integrity": "sha1-fnQlb7qknHWqfHogXMInmcrIAAQ="
+      "integrity": "sha1-fnQlb7qknHWqfHogXMInmcrIAAQ=",
+      "dev": true
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     "semver-diff": {
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@@ -9069,7 +9181,8 @@
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-      "integrity": "sha1-xB8vbDn8FtHNF61LXYlhFK5HDVU="
+      "integrity": "sha1-xB8vbDn8FtHNF61LXYlhFK5HDVU=",
+      "dev": true
     },
     "slice-ansi": {
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@@ -10831,7 +10944,8 @@
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-      "integrity": "sha1-igOdLRAh0i0eoUyA2OpGi6LvP8w="
+      "integrity": "sha1-igOdLRAh0i0eoUyA2OpGi6LvP8w=",
+      "dev": true
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@@ -10850,6 +10964,7 @@
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+      "dev": true,
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@@ -11193,6 +11308,7 @@
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       "integrity": "sha1-ajhfuIU9lS1f8F0Oiq+UJ43GPc8=",
+      "dev": true,
       "requires": {
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@@ -11218,7 +11334,8 @@
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-      "integrity": "sha1-U10EXOa2Nj+kARcIRimZXp3zJMc="
+      "integrity": "sha1-U10EXOa2Nj+kARcIRimZXp3zJMc=",
+      "dev": true
     },
     "symbol-observable": {
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@@ -11576,7 +11693,8 @@
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-      "integrity": "sha1-uDVx+k2MJbguIxsG46MFXeTKGkc="
+      "integrity": "sha1-uDVx+k2MJbguIxsG46MFXeTKGkc=",
+      "dev": true
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     "to-object-path": {
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@@ -11641,7 +11759,8 @@
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-      "integrity": "sha1-yy4SAwZ+DI3h9hQJS5/kVwTqYAM="
+      "integrity": "sha1-yy4SAwZ+DI3h9hQJS5/kVwTqYAM=",
+      "dev": true
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     "tslib": {
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diff --git a/package.json b/package.json
index beed152..2364c9d 100644
--- a/package.json
+++ b/package.json
@@ -34,12 +34,12 @@
     "sdk"
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-    "babel-loader": "^7.1.5",
-    "babel-preset-env": "^1.7.0",
     "native-promise-only": "^0.8.1"
   },
   "devDependencies": {
+    "babel-core": "^6.26.3",
+    "babel-loader": "^7.1.5",
+    "babel-preset-env": "^1.7.0",
     "chai": "^4.1.2",
     "chai-as-promised": "^7.1.1",
     "dirty-chai": "^2.0.1",