diff --git a/js/package.json b/js/package.json
index bf6260d1d..22ec62179 100644
--- a/js/package.json
+++ b/js/package.json
@@ -37,7 +37,7 @@
     "rollup-plugin-json": "^2.3.0",
     "rollup-plugin-license": "^0.5.0",
     "rollup-plugin-node-resolve": "^3.0.0",
-    "uglify-js": "~2.4.3"
+    "uglify-js": "~2.6.0"
   },
   "scripts": {
     "build:config": "node scripts/buildConfig.js",
diff --git a/js/yarn.lock b/js/yarn.lock
index 80520f059..94a9343ec 100644
--- a/js/yarn.lock
+++ b/js/yarn.lock
@@ -109,9 +109,13 @@ ajv@^5.2.3, ajv@^5.3.0:
     fast-json-stable-stringify "^2.0.0"
     json-schema-traverse "^0.3.0"
 
-amdefine@>=0.0.4:
-  version "1.0.1"
-  resolved "https://registry.yarnpkg.com/amdefine/-/amdefine-1.0.1.tgz#4a5282ac164729e93619bcfd3ad151f817ce91f5"
+align-text@^0.1.1, align-text@^0.1.3:
+  version "0.1.4"
+  resolved "https://registry.yarnpkg.com/align-text/-/align-text-0.1.4.tgz#0cd90a561093f35d0a99256c22b7069433fad117"
+  dependencies:
+    kind-of "^3.0.2"
+    longest "^1.0.1"
+    repeat-string "^1.5.2"
 
 ansi-escapes@^3.0.0:
   version "3.1.0"
@@ -884,6 +888,13 @@ caseless@~0.12.0:
   version "0.12.0"
   resolved "https://registry.yarnpkg.com/caseless/-/caseless-0.12.0.tgz#1b681c21ff84033c826543090689420d187151dc"
 
+center-align@^0.1.1:
+  version "0.1.3"
+  resolved "https://registry.yarnpkg.com/center-align/-/center-align-0.1.3.tgz#aa0d32629b6ee972200411cbd4461c907bc2b7ad"
+  dependencies:
+    align-text "^0.1.3"
+    lazy-cache "^1.0.3"
+
 chalk@^1.1.3:
   version "1.1.3"
   resolved "https://registry.npmjs.org/chalk/-/chalk-1.1.3.tgz#a8115c55e4a702fe4d150abd3872822a7e09fc98"
@@ -948,6 +959,14 @@ cli-width@^2.0.0:
   version "2.2.0"
   resolved "https://registry.yarnpkg.com/cli-width/-/cli-width-2.2.0.tgz#ff19ede8a9a5e579324147b0c11f0fbcbabed639"
 
+cliui@^2.1.0:
+  version "2.1.0"
+  resolved "https://registry.yarnpkg.com/cliui/-/cliui-2.1.0.tgz#4b475760ff80264c762c3a1719032e91c7fea0d1"
+  dependencies:
+    center-align "^0.1.1"
+    right-align "^0.1.1"
+    wordwrap "0.0.2"
+
 co@^4.6.0:
   version "4.6.0"
   resolved "https://registry.yarnpkg.com/co/-/co-4.6.0.tgz#6ea6bdf3d853ae54ccb8e47bfa0bf3f9031fb184"
@@ -2128,6 +2147,10 @@ klaw@^1.0.0:
   optionalDependencies:
     graceful-fs "^4.1.9"
 
+lazy-cache@^1.0.3:
+  version "1.0.4"
+  resolved "https://registry.yarnpkg.com/lazy-cache/-/lazy-cache-1.0.4.tgz#a1d78fc3a50474cb80845d3b3b6e1da49a446e8e"
+
 levn@^0.3.0, levn@~0.3.0:
   version "0.3.0"
   resolved "https://registry.yarnpkg.com/levn/-/levn-0.3.0.tgz#3b09924edf9f083c0490fdd4c0bc4421e04764ee"
@@ -2151,6 +2174,10 @@ lodash@~2.4.1:
   version "2.4.2"
   resolved "https://registry.npmjs.org/lodash/-/lodash-2.4.2.tgz#fadd834b9683073da179b3eae6d9c0d15053f73e"
 
+longest@^1.0.1:
+  version "1.0.1"
+  resolved "https://registry.yarnpkg.com/longest/-/longest-1.0.1.tgz#30a0b2da38f73770e8294a0d22e6625ed77d0097"
+
 loose-envify@^1.0.0:
   version "1.4.0"
   resolved "https://registry.yarnpkg.com/loose-envify/-/loose-envify-1.4.0.tgz#71ee51fa7be4caec1a63839f7e682d8132d30caf"
@@ -2790,6 +2817,12 @@ ret@~0.1.10:
   version "0.1.15"
   resolved "https://registry.yarnpkg.com/ret/-/ret-0.1.15.tgz#b8a4825d5bdb1fc3f6f53c2bc33f81388681c7bc"
 
+right-align@^0.1.1:
+  version "0.1.3"
+  resolved "https://registry.yarnpkg.com/right-align/-/right-align-0.1.3.tgz#61339b722fe6a3515689210d24e14c96148613ef"
+  dependencies:
+    align-text "^0.1.1"
+
 rimraf@^2.2.8, rimraf@^2.5.2, rimraf@^2.6.1, rimraf@^2.6.2:
   version "2.6.2"
   resolved "https://registry.yarnpkg.com/rimraf/-/rimraf-2.6.2.tgz#2ed8150d24a16ea8651e6d6ef0f47c4158ce7a36"
@@ -2993,13 +3026,7 @@ source-map-url@^0.4.0:
   version "0.4.0"
   resolved "https://registry.yarnpkg.com/source-map-url/-/source-map-url-0.4.0.tgz#3e935d7ddd73631b97659956d55128e87b5084a3"
 
-source-map@0.1.34:
-  version "0.1.34"
-  resolved "https://registry.yarnpkg.com/source-map/-/source-map-0.1.34.tgz#a7cfe89aec7b1682c3b198d0acfb47d7d090566b"
-  dependencies:
-    amdefine ">=0.0.4"
-
-source-map@^0.5.0, source-map@^0.5.6, source-map@^0.5.7:
+source-map@^0.5.0, source-map@^0.5.6, source-map@^0.5.7, source-map@~0.5.1:
   version "0.5.7"
   resolved "https://registry.yarnpkg.com/source-map/-/source-map-0.5.7.tgz#8a039d2d1021d22d1ea14c80d8ea468ba2ef3fcc"
 
@@ -3194,14 +3221,14 @@ typedarray@^0.0.6:
   version "0.0.6"
   resolved "https://registry.yarnpkg.com/typedarray/-/typedarray-0.0.6.tgz#867ac74e3864187b1d3d47d996a78ec5c8830777"
 
-uglify-js@~2.4.3:
-  version "2.4.24"
-  resolved "https://registry.npmjs.org/uglify-js/-/uglify-js-2.4.24.tgz#fad5755c1e1577658bb06ff9ab6e548c95bebd6e"
+uglify-js@~2.6.0:
+  version "2.6.0"
+  resolved "https://registry.yarnpkg.com/uglify-js/-/uglify-js-2.6.0.tgz#25eaa1cc3550e39410ceefafd1cfbb6b6d15f001"
   dependencies:
     async "~0.2.6"
-    source-map "0.1.34"
+    source-map "~0.5.1"
     uglify-to-browserify "~1.0.0"
-    yargs "~3.5.4"
+    yargs "~3.10.0"
 
 uglify-to-browserify@~1.0.0:
   version "1.0.2"
@@ -3331,14 +3358,14 @@ yallist@^3.0.0, yallist@^3.0.2:
   version "3.0.2"
   resolved "https://registry.yarnpkg.com/yallist/-/yallist-3.0.2.tgz#8452b4bb7e83c7c188d8041c1a837c773d6d8bb9"
 
-yargs@~3.5.4:
-  version "3.5.4"
-  resolved "https://registry.npmjs.org/yargs/-/yargs-3.5.4.tgz#d8aff8f665e94c34bd259bdebd1bfaf0ddd35361"
+yargs@~3.10.0:
+  version "3.10.0"
+  resolved "https://registry.yarnpkg.com/yargs/-/yargs-3.10.0.tgz#f7ee7bd857dd7c1d2d38c0e74efbd681d1431fd1"
   dependencies:
     camelcase "^1.0.2"
+    cliui "^2.1.0"
     decamelize "^1.0.0"
     window-size "0.1.0"
-    wordwrap "0.0.2"
 
 yauzl@2.4.1:
   version "2.4.1"