diff --git a/package.json b/package.json
index 815a16c..e2faabe 100644
--- a/package.json
+++ b/package.json
@@ -51,7 +51,7 @@
     "rollup": "^0.60.0",
     "rollup-plugin-babel": "^3.0.1",
     "rollup-plugin-commonjs": "^9.0.0",
-    "rollup-plugin-filesize": "^2.0.0",
+    "rollup-plugin-filesize": "^6.0.0",
     "rollup-plugin-node-resolve": "^3.0.0",
     "rollup-plugin-uglify": "^5.0.0",
     "xo": "^0.21.1"
diff --git a/yarn.lock b/yarn.lock
index 0f23a80..87576f2 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -2,7 +2,14 @@
 # yarn lockfile v1
 
 
-"@babel/code-frame@^7.0.0-beta.35", "@babel/code-frame@^7.0.0-beta.47":
+"@babel/code-frame@^7.0.0":
+  version "7.0.0"
+  resolved "https://registry.yarnpkg.com/@babel/code-frame/-/code-frame-7.0.0.tgz#06e2ab19bdb535385559aabb5ba59729482800f8"
+  integrity sha512-OfC2uemaknXr87bdLUkWog7nYuliM9Ij5HUcajsVcMCpQrcLmtxRbVFTIqmcSkSeYRBFBRxs2FiUqFJDLdiebA==
+  dependencies:
+    "@babel/highlight" "^7.0.0"
+
+"@babel/code-frame@^7.0.0-beta.35":
   version "7.0.0-beta.47"
   resolved "https://registry.yarnpkg.com/@babel/code-frame/-/code-frame-7.0.0-beta.47.tgz#d18c2f4c4ba8d093a2bcfab5616593bfe2441a27"
   dependencies:
@@ -16,6 +23,15 @@
     esutils "^2.0.2"
     js-tokens "^3.0.0"
 
+"@babel/highlight@^7.0.0":
+  version "7.0.0"
+  resolved "https://registry.yarnpkg.com/@babel/highlight/-/highlight-7.0.0.tgz#f710c38c8d458e6dd9a201afb637fcb781ce99e4"
+  integrity sha512-UFMC4ZeFC48Tpvj7C8UgLvtkaUuovQX+5xNWrsIoMG8o2z+XFKjKaN9iVmS84dPwVN00W4wPmqvYoZF3EGAsfw==
+  dependencies:
+    chalk "^2.0.0"
+    esutils "^2.0.2"
+    js-tokens "^4.0.0"
+
 "@mrmlnc/readdir-enhanced@^2.2.1":
   version "2.2.1"
   resolved "https://registry.yarnpkg.com/@mrmlnc/readdir-enhanced/-/readdir-enhanced-2.2.1.tgz#524af240d1a360527b730475ecfa1344aa540dde"
@@ -124,6 +140,13 @@ ansi-align@^2.0.0:
   dependencies:
     string-width "^2.0.0"
 
+ansi-align@^3.0.0:
+  version "3.0.0"
+  resolved "https://registry.yarnpkg.com/ansi-align/-/ansi-align-3.0.0.tgz#b536b371cf687caaef236c18d3e21fe3797467cb"
+  integrity sha512-ZpClVKqXN3RGBmKibdfWzqCY4lnjEuoNzU5T0oEFpfd/z5qJHVarukridD4juLO2FXMiwUQxr9WqQtaYa8XRYw==
+  dependencies:
+    string-width "^3.0.0"
+
 ansi-escapes@^2.0.0:
   version "2.0.0"
   resolved "https://registry.yarnpkg.com/ansi-escapes/-/ansi-escapes-2.0.0.tgz#5bae52be424878dd9783e8910e3fc2922e83c81b"
@@ -140,6 +163,11 @@ ansi-regex@^3.0.0:
   version "3.0.0"
   resolved "https://registry.yarnpkg.com/ansi-regex/-/ansi-regex-3.0.0.tgz#ed0317c322064f79466c02966bddb605ab37d998"
 
+ansi-regex@^4.0.0:
+  version "4.0.0"
+  resolved "https://registry.yarnpkg.com/ansi-regex/-/ansi-regex-4.0.0.tgz#70de791edf021404c3fd615aa89118ae0432e5a9"
+  integrity sha512-iB5Dda8t/UqpPI/IjsejXu5jOGDrzn41wJyljwPH65VCIbk6+1BzFIMJGFwTNrYXT1CrD+B4l19U7awiQ8rk7w==
+
 ansi-styles@^2.2.1:
   version "2.2.1"
   resolved "https://registry.yarnpkg.com/ansi-styles/-/ansi-styles-2.2.1.tgz#b432dd3358b634cf75e1e4664368240533c1ddbe"
@@ -466,13 +494,21 @@ babel-helpers@^6.24.1:
     babel-runtime "^6.22.0"
     babel-template "^6.24.1"
 
-babel-jest@^22.0.0, babel-jest@^22.4.4:
+babel-jest@^22.4.4:
   version "22.4.4"
   resolved "https://registry.yarnpkg.com/babel-jest/-/babel-jest-22.4.4.tgz#977259240420e227444ebe49e226a61e49ea659d"
   dependencies:
     babel-plugin-istanbul "^4.1.5"
     babel-preset-jest "^22.4.4"
 
+babel-jest@^23.0.0:
+  version "23.6.0"
+  resolved "https://registry.yarnpkg.com/babel-jest/-/babel-jest-23.6.0.tgz#a644232366557a2240a0c083da6b25786185a2f1"
+  integrity sha512-lqKGG6LYXYu+DQh/slrQ8nxXQkEkhugdXsU6St7GmhVS7Ilc/22ArwqXNJrf0QaOBjZB0360qZMwXqDYQHXaew==
+  dependencies:
+    babel-plugin-istanbul "^4.1.6"
+    babel-preset-jest "^23.2.0"
+
 babel-messages@^6.23.0:
   version "6.23.0"
   resolved "https://registry.yarnpkg.com/babel-messages/-/babel-messages-6.23.0.tgz#f3cdf4703858035b2a2951c6ec5edf6c62f2630e"
@@ -489,9 +525,10 @@ babel-plugin-check-es2015-constants@^6.22.0:
   dependencies:
     babel-runtime "^6.22.0"
 
-babel-plugin-istanbul@^4.1.5:
+babel-plugin-istanbul@^4.1.5, babel-plugin-istanbul@^4.1.6:
   version "4.1.6"
   resolved "https://registry.yarnpkg.com/babel-plugin-istanbul/-/babel-plugin-istanbul-4.1.6.tgz#36c59b2192efce81c5b378321b74175add1c9a45"
+  integrity sha512-PWP9FQ1AhZhS01T/4qLSKoHGY/xvkZdVBGlKM/HuxxS3+sC66HhTNR7+MpbO/so/cz/wY94MeSWJuP1hXIPfwQ==
   dependencies:
     babel-plugin-syntax-object-rest-spread "^6.13.0"
     find-up "^2.1.0"
@@ -502,6 +539,11 @@ babel-plugin-jest-hoist@^22.4.4:
   version "22.4.4"
   resolved "https://registry.yarnpkg.com/babel-plugin-jest-hoist/-/babel-plugin-jest-hoist-22.4.4.tgz#b9851906eab34c7bf6f8c895a2b08bea1a844c0b"
 
+babel-plugin-jest-hoist@^23.2.0:
+  version "23.2.0"
+  resolved "https://registry.yarnpkg.com/babel-plugin-jest-hoist/-/babel-plugin-jest-hoist-23.2.0.tgz#e61fae05a1ca8801aadee57a6d66b8cefaf44167"
+  integrity sha1-5h+uBaHKiAGq3uV6bWa4zvr0QWc=
+
 babel-plugin-syntax-async-functions@^6.8.0:
   version "6.13.0"
   resolved "https://registry.yarnpkg.com/babel-plugin-syntax-async-functions/-/babel-plugin-syntax-async-functions-6.13.0.tgz#cad9cad1191b5ad634bf30ae0872391e0647be95"
@@ -794,6 +836,14 @@ babel-preset-jest@^22.4.4:
     babel-plugin-jest-hoist "^22.4.4"
     babel-plugin-syntax-object-rest-spread "^6.13.0"
 
+babel-preset-jest@^23.2.0:
+  version "23.2.0"
+  resolved "https://registry.yarnpkg.com/babel-preset-jest/-/babel-preset-jest-23.2.0.tgz#8ec7a03a138f001a1a8fb1e8113652bf1a55da46"
+  integrity sha1-jsegOhOPABoaj7HoETZSvxpV2kY=
+  dependencies:
+    babel-plugin-jest-hoist "^23.2.0"
+    babel-plugin-syntax-object-rest-spread "^6.13.0"
+
 babel-register@6.26.0, babel-register@^6.26.0:
   version "6.26.0"
   resolved "https://registry.yarnpkg.com/babel-register/-/babel-register-6.26.0.tgz#6ed021173e2fcb486d7acb45c6009a856f647071"
@@ -880,11 +930,19 @@ binary-extensions@^1.0.0:
   version "1.11.0"
   resolved "https://registry.yarnpkg.com/binary-extensions/-/binary-extensions-1.11.0.tgz#46aa1751fb6a2f93ee5e689bb1087d4b14c6c205"
 
+bl@^1.0.0:
+  version "1.2.2"
+  resolved "https://registry.yarnpkg.com/bl/-/bl-1.2.2.tgz#a160911717103c07410cef63ef51b397c025af9c"
+  integrity sha512-e8tQYnZodmebYDWGH7KMRvtzKXaJHx3BbilrgZCfvyLUYdKpK1t5PSPmpkny/SgiTSCnjfLW7v5rlONXVFkQEA==
+  dependencies:
+    readable-stream "^2.3.5"
+    safe-buffer "^5.1.1"
+
 bluebird@^3.5.0:
   version "3.5.1"
   resolved "https://registry.yarnpkg.com/bluebird/-/bluebird-3.5.1.tgz#d9551f9de98f1fcda1e683d17ee91a0602ee2eb9"
 
-boxen@^1.1.0, boxen@^1.2.1:
+boxen@^1.2.1:
   version "1.3.0"
   resolved "https://registry.yarnpkg.com/boxen/-/boxen-1.3.0.tgz#55c6c39a8ba58d9c61ad22cd877532deb665a20b"
   dependencies:
@@ -896,6 +954,19 @@ boxen@^1.1.0, boxen@^1.2.1:
     term-size "^1.2.0"
     widest-line "^2.0.0"
 
+boxen@^2.0.0:
+  version "2.1.0"
+  resolved "https://registry.yarnpkg.com/boxen/-/boxen-2.1.0.tgz#8d576156e33fc26a34d6be8635fd16b1d745f0b2"
+  integrity sha512-luq3RQOt2U5sUX+fiu+qnT+wWnHDcATLpEe63jvge6GUZO99AKbVRfp97d2jgLvq1iQa0ORzaAm4lGVG52ZSlw==
+  dependencies:
+    ansi-align "^3.0.0"
+    camelcase "^5.0.0"
+    chalk "^2.4.1"
+    cli-boxes "^1.0.0"
+    string-width "^3.0.0"
+    term-size "^1.2.0"
+    widest-line "^2.0.0"
+
 brace-expansion@^1.1.7:
   version "1.1.11"
   resolved "https://registry.yarnpkg.com/brace-expansion/-/brace-expansion-1.1.11.tgz#3c7fcbf529d87226f3d2f52b966ff5271eb441dd"
@@ -926,6 +997,14 @@ braces@^2.3.1:
     split-string "^3.0.2"
     to-regex "^3.0.1"
 
+brotli-size@0.0.3:
+  version "0.0.3"
+  resolved "https://registry.yarnpkg.com/brotli-size/-/brotli-size-0.0.3.tgz#1d3855b38f182591a6f69da1516131676e5f62f2"
+  integrity sha512-bBIdd8uUGxKGldAVykxOqPegl+HlIm4FpXJamwWw5x77WCE8jO7AhXFE1YXOhOB28gS+2pTQete0FqRE6U5hQQ==
+  dependencies:
+    duplexer "^0.1.1"
+    iltorb "^2.0.5"
+
 browser-process-hrtime@^0.1.2:
   version "0.1.2"
   resolved "https://registry.yarnpkg.com/browser-process-hrtime/-/browser-process-hrtime-0.1.2.tgz#425d68a58d3447f02a04aa894187fce8af8b7b8e"
@@ -957,6 +1036,24 @@ buf-compare@^1.0.0:
   version "1.0.1"
   resolved "https://registry.yarnpkg.com/buf-compare/-/buf-compare-1.0.1.tgz#fef28da8b8113a0a0db4430b0b6467b69730b34a"
 
+buffer-alloc-unsafe@^1.1.0:
+  version "1.1.0"
+  resolved "https://registry.yarnpkg.com/buffer-alloc-unsafe/-/buffer-alloc-unsafe-1.1.0.tgz#bd7dc26ae2972d0eda253be061dba992349c19f0"
+  integrity sha512-TEM2iMIEQdJ2yjPJoSIsldnleVaAk1oW3DBVUykyOLsEsFmEc9kn+SFFPz+gl54KQNxlDnAwCXosOS9Okx2xAg==
+
+buffer-alloc@^1.2.0:
+  version "1.2.0"
+  resolved "https://registry.yarnpkg.com/buffer-alloc/-/buffer-alloc-1.2.0.tgz#890dd90d923a873e08e10e5fd51a57e5b7cce0ec"
+  integrity sha512-CFsHQgjtW1UChdXgbyJGtnm+O/uLQeZdtbDo8mfUgYXCHSM1wgrVxXm6bSyrUuErEb+4sYVGCzASBRot7zyrow==
+  dependencies:
+    buffer-alloc-unsafe "^1.1.0"
+    buffer-fill "^1.0.0"
+
+buffer-fill@^1.0.0:
+  version "1.0.0"
+  resolved "https://registry.yarnpkg.com/buffer-fill/-/buffer-fill-1.0.0.tgz#f8f78b76789888ef39f205cd637f68e702122b2c"
+  integrity sha1-+PeLdniYiO858gXNY39o5wISKyw=
+
 buffer-from@^1.0.0:
   version "1.0.0"
   resolved "https://registry.yarnpkg.com/buffer-from/-/buffer-from-1.0.0.tgz#4cb8832d23612589b0406e9e2956c17f06fdf531"
@@ -1047,6 +1144,11 @@ camelcase@^4.0.0, camelcase@^4.1.0:
   version "4.1.0"
   resolved "https://registry.yarnpkg.com/camelcase/-/camelcase-4.1.0.tgz#d545635be1e33c542649c69173e5de6acfae34dd"
 
+camelcase@^5.0.0:
+  version "5.0.0"
+  resolved "https://registry.yarnpkg.com/camelcase/-/camelcase-5.0.0.tgz#03295527d58bd3cd4aa75363f35b2e8d97be2f42"
+  integrity sha512-faqwZqnWxbxn+F1d399ygeamQNy3lPp/H9H6rNrqYh4FSVCtcY+3cub1MxA8o9mDd55mM8Aghuu/kuyYA6VTsA==
+
 caniuse-lite@^1.0.30000844:
   version "1.0.30000844"
   resolved "https://registry.yarnpkg.com/caniuse-lite/-/caniuse-lite-1.0.30000844.tgz#de7c84cde0582143cf4f5abdf1b98e5a0539ad4a"
@@ -1072,7 +1174,7 @@ center-align@^0.1.1:
     align-text "^0.1.3"
     lazy-cache "^1.0.3"
 
-chalk@2.4.1, chalk@^2.0.0, chalk@^2.0.1, chalk@^2.1.0, chalk@^2.3.1:
+chalk@2.4.1, chalk@^2.0.0, chalk@^2.0.1, chalk@^2.1.0, chalk@^2.3.1, chalk@^2.4.1:
   version "2.4.1"
   resolved "https://registry.yarnpkg.com/chalk/-/chalk-2.4.1.tgz#18c49ab16a037b6eb0152cc83e3471338215b66e"
   dependencies:
@@ -1205,9 +1307,10 @@ color-name@^1.1.1:
   version "1.1.3"
   resolved "https://registry.yarnpkg.com/color-name/-/color-name-1.1.3.tgz#a7d0558bd89c42f795dd42328f740831ca53bc25"
 
-colors@^1.1.2:
-  version "1.3.0"
-  resolved "https://registry.yarnpkg.com/colors/-/colors-1.3.0.tgz#5f20c9fef6945cb1134260aab33bfbdc8295e04e"
+colors@^1.3.2:
+  version "1.3.3"
+  resolved "https://registry.yarnpkg.com/colors/-/colors-1.3.3.tgz#39e005d546afe01e01f9c4ca8fa50f686a01205d"
+  integrity sha512-mmGt/1pZqYRjMxB1axhTo16/snVZ5krrKkcmMeVKxzECMMXoCgnvTPp10QgHfcbQZw8Dq2jMNG6je4JlWU0gWg==
 
 combined-stream@1.0.6, combined-stream@~1.0.5:
   version "1.0.6"
@@ -1215,10 +1318,15 @@ combined-stream@1.0.6, combined-stream@~1.0.5:
   dependencies:
     delayed-stream "~1.0.0"
 
-commander@^2.11.0, commander@~2.15.0:
+commander@^2.11.0:
   version "2.15.1"
   resolved "https://registry.yarnpkg.com/commander/-/commander-2.15.1.tgz#df46e867d0fc2aec66a34662b406a9ccafff5b0f"
 
+commander@~2.17.1:
+  version "2.17.1"
+  resolved "https://registry.yarnpkg.com/commander/-/commander-2.17.1.tgz#bd77ab7de6de94205ceacc72f1716d29f20a77bf"
+  integrity sha512-wPMUt6FnH2yzG95SA6mzjQOEKUU3aLaDEmzs1ti+1E9h+CsrZghRlqEM/EJ4KscsQVG8uNN4uVreUeT8+drlgg==
+
 compare-func@^1.3.1:
   version "1.3.2"
   resolved "https://registry.yarnpkg.com/compare-func/-/compare-func-1.3.2.tgz#99dd0ba457e1f9bc722b12c08ec33eeab31fa648"
@@ -1566,6 +1674,11 @@ deep-extend@^0.5.1:
   version "0.5.1"
   resolved "https://registry.yarnpkg.com/deep-extend/-/deep-extend-0.5.1.tgz#b894a9dd90d3023fbf1c55a394fb858eb2066f1f"
 
+deep-extend@^0.6.0:
+  version "0.6.0"
+  resolved "https://registry.yarnpkg.com/deep-extend/-/deep-extend-0.6.0.tgz#c4fa7c95404a17a9c3e8ca7e1537312b736330ac"
+  integrity sha512-LOHxIOaPYdHlJRtCQfDIVZtfw/ufM8+rVj649RIHzcm/vGwQRXFt6OPqIFWsm2XEMrNIEtWR64sY1LEKD2vAOA==
+
 deep-is@~0.1.3:
   version "0.1.3"
   resolved "https://registry.yarnpkg.com/deep-is/-/deep-is-0.1.3.tgz#b369d6fb5dbc13eecf524f91b070feedc357cf34"
@@ -1644,7 +1757,7 @@ detect-indent@^4.0.0:
   dependencies:
     repeating "^2.0.0"
 
-detect-libc@^1.0.2:
+detect-libc@^1.0.2, detect-libc@^1.0.3:
   version "1.0.3"
   resolved "https://registry.yarnpkg.com/detect-libc/-/detect-libc-1.0.3.tgz#fa137c4bd698edf55cd5cd02ac559f91a4c4ba9b"
 
@@ -1712,6 +1825,18 @@ electron-to-chromium@^1.3.47:
   version "1.3.47"
   resolved "https://registry.yarnpkg.com/electron-to-chromium/-/electron-to-chromium-1.3.47.tgz#764e887ca9104d01a0ac8eabee7dfc0e2ce14104"
 
+emoji-regex@^7.0.1:
+  version "7.0.3"
+  resolved "https://registry.yarnpkg.com/emoji-regex/-/emoji-regex-7.0.3.tgz#933a04052860c85e83c122479c4748a8e4c72156"
+  integrity sha512-CwBLREIQ7LvYFB0WyRvwhq5N5qPhc6PMjD6bYggFlI5YyDgl+0vxq5VHbMOFqLg7hfWzmu8T5Z1QofhmTIhItA==
+
+end-of-stream@^1.0.0, end-of-stream@^1.1.0:
+  version "1.4.1"
+  resolved "https://registry.yarnpkg.com/end-of-stream/-/end-of-stream-1.4.1.tgz#ed29634d19baba463b6ce6b80a37213eab71ec43"
+  integrity sha512-1MkrZNvWTKCaigbn+W15elq2BB/L22nqrSY5DKlo3X6+vclJm8Bb5djXJBmEX6fS3+zCh/F4VBK5Z2KxJt4s2Q==
+  dependencies:
+    once "^1.4.0"
+
 enhance-visitors@^1.0.0:
   version "1.0.0"
   resolved "https://registry.yarnpkg.com/enhance-visitors/-/enhance-visitors-1.0.0.tgz#aa945d05da465672a1ebd38fee2ed3da8518e95a"
@@ -2043,6 +2168,11 @@ expand-range@^1.8.1:
   dependencies:
     fill-range "^2.1.0"
 
+expand-template@^2.0.3:
+  version "2.0.3"
+  resolved "https://registry.yarnpkg.com/expand-template/-/expand-template-2.0.3.tgz#6e14b3fcee0f3a6340ecb57d2e8918692052a47c"
+  integrity sha512-XYfuKMvj4O35f/pOXLObndIRvyQ+/+6AhODh+OKWj9S9498pHHn/IMszH+gt0fBCRWMNfk1ZSp5x3AifmnI2vg==
+
 expect@^22.4.0:
   version "22.4.3"
   resolved "https://registry.yarnpkg.com/expect/-/expect-22.4.3.tgz#d5a29d0a0e1fb2153557caef2674d4547e914674"
@@ -2163,9 +2293,10 @@ fileset@^2.0.2:
     glob "^7.0.3"
     minimatch "^3.0.3"
 
-filesize@^3.5.6:
+filesize@^3.6.1:
   version "3.6.1"
   resolved "https://registry.yarnpkg.com/filesize/-/filesize-3.6.1.tgz#090bb3ee01b6f801a8a8be99d31710b3422bb317"
+  integrity sha512-7KjR1vv6qnicaPMi1iiTcI85CyYwRO/PSFCu6SvqL8jN2Wjt/NIYQTFtFs7fSDCYOstUkEWIQGFUg5YZQfjlcg==
 
 fill-range@^2.1.0:
   version "2.2.4"
@@ -2247,6 +2378,11 @@ from2@^2.1.1:
     inherits "^2.0.1"
     readable-stream "^2.0.0"
 
+fs-constants@^1.0.0:
+  version "1.0.0"
+  resolved "https://registry.yarnpkg.com/fs-constants/-/fs-constants-1.0.0.tgz#6be0de9be998ce16af8afc24497b9ee9b7ccd9ad"
+  integrity sha512-y6OAwoSIf7FyjMIv94u+b5rdheZEjzR63GTyZJm5qh4Bi+2YgwLCcI/fPFZkL5PSixOt6ZNKm+w+Hfp/Bciwow==
+
 fs-minipass@^1.2.5:
   version "1.2.5"
   resolved "https://registry.yarnpkg.com/fs-minipass/-/fs-minipass-1.2.5.tgz#06c277218454ec288df77ada54a03b8702aacb9d"
@@ -2363,6 +2499,11 @@ gitconfiglocal@^1.0.0:
   dependencies:
     ini "^1.3.2"
 
+github-from-package@0.0.0:
+  version "0.0.0"
+  resolved "https://registry.yarnpkg.com/github-from-package/-/github-from-package-0.0.0.tgz#97fb5d96bfde8973313f20e8288ef9a167fa64ce"
+  integrity sha1-l/tdlr/eiXMxPyDoKI75oWf6ZM4=
+
 glob-base@^0.3.0:
   version "0.3.0"
   resolved "https://registry.yarnpkg.com/glob-base/-/glob-base-0.3.0.tgz#dbb164f6221b1c0b1ccf82aea328b497df0ea3c4"
@@ -2481,11 +2622,13 @@ growly@^1.3.0:
   version "1.3.0"
   resolved "https://registry.yarnpkg.com/growly/-/growly-1.3.0.tgz#f10748cbe76af964b7c96c93c6bcc28af120c081"
 
-gzip-size@^3.0.0:
-  version "3.0.0"
-  resolved "https://registry.yarnpkg.com/gzip-size/-/gzip-size-3.0.0.tgz#546188e9bdc337f673772f81660464b389dce520"
+gzip-size@^5.0.0:
+  version "5.0.0"
+  resolved "https://registry.yarnpkg.com/gzip-size/-/gzip-size-5.0.0.tgz#a55ecd99222f4c48fd8c01c625ce3b349d0a0e80"
+  integrity sha512-5iI7omclyqrnWw4XbXAmGhPsABkSIDQonv2K0h61lybgofWa6iZyvrI3r2zsJH4P8Nb64fFVzlvfhs0g7BBxAA==
   dependencies:
     duplexer "^0.1.1"
+    pify "^3.0.0"
 
 handlebars@^4.0.2, handlebars@^4.0.3:
   version "4.0.11"
@@ -2650,6 +2793,16 @@ ignore@^3.3.3, ignore@^3.3.5, ignore@^3.3.6:
   version "3.3.8"
   resolved "https://registry.yarnpkg.com/ignore/-/ignore-3.3.8.tgz#3f8e9c35d38708a3a7e0e9abb6c73e7ee7707b2b"
 
+iltorb@^2.0.5:
+  version "2.4.1"
+  resolved "https://registry.yarnpkg.com/iltorb/-/iltorb-2.4.1.tgz#3ae14f0a76ba880503884a2fe630b1f748eb4c17"
+  integrity sha512-huyAN7dSNe2b7VAl5AyvaeZ8XTcDTSF1b8JVYDggl+SBfHsORq3qMZeesZW7zoEy21s15SiERAITWT5cwxu1Uw==
+  dependencies:
+    detect-libc "^1.0.3"
+    npmlog "^4.1.2"
+    prebuild-install "^5.2.1"
+    which-pm-runs "^1.0.0"
+
 import-lazy@^2.1.0:
   version "2.1.0"
   resolved "https://registry.yarnpkg.com/import-lazy/-/import-lazy-2.1.0.tgz#05698e3d45c88e8d7e9d92cb0584e77f096f3e43"
@@ -3425,6 +3578,13 @@ jest-worker@^22.2.2, jest-worker@^22.4.3:
   dependencies:
     merge-stream "^1.0.1"
 
+jest-worker@^23.2.0:
+  version "23.2.0"
+  resolved "https://registry.yarnpkg.com/jest-worker/-/jest-worker-23.2.0.tgz#faf706a8da36fae60eb26957257fa7b5d8ea02b9"
+  integrity sha1-+vcGqNo2+uYOsmlXJX+ntdjqArk=
+  dependencies:
+    merge-stream "^1.0.1"
+
 jest@^22.0.0:
   version "22.4.4"
   resolved "https://registry.yarnpkg.com/jest/-/jest-22.4.4.tgz#ffb36c9654b339a13e10b3d4b338eb3e9d49f6eb"
@@ -3436,6 +3596,11 @@ js-tokens@^3.0.0, js-tokens@^3.0.2:
   version "3.0.2"
   resolved "https://registry.yarnpkg.com/js-tokens/-/js-tokens-3.0.2.tgz#9866df395102130e38f7f996bceb65443209c25b"
 
+js-tokens@^4.0.0:
+  version "4.0.0"
+  resolved "https://registry.yarnpkg.com/js-tokens/-/js-tokens-4.0.0.tgz#19203fb59991df98e3a287050d4647cdeaf32499"
+  integrity sha512-RdJUflcE3cUzKiMqQgsCu06FPu9UdIJO0beYbPhHN4k6apgJtifcoCtT9bcxOpYBtpD2kCM6Sbzg4CausW/PKQ==
+
 js-types@^1.0.0:
   version "1.0.0"
   resolved "https://registry.yarnpkg.com/js-types/-/js-types-1.0.0.tgz#d242e6494ed572ad3c92809fc8bed7f7687cbf03"
@@ -3986,6 +4151,11 @@ nanomatch@^1.2.9:
     snapdragon "^0.8.1"
     to-regex "^3.0.1"
 
+napi-build-utils@^1.0.1:
+  version "1.0.1"
+  resolved "https://registry.yarnpkg.com/napi-build-utils/-/napi-build-utils-1.0.1.tgz#1381a0f92c39d66bf19852e7873432fc2123e508"
+  integrity sha512-boQj1WFgQH3v4clhu3mTNfP+vOBxorDlE8EKiMjUlLG3C4qAESnn9AxIOkFgTR2c9LtzNjPrjS60cT27ZKBhaA==
+
 natural-compare@^1.4.0:
   version "1.4.0"
   resolved "https://registry.yarnpkg.com/natural-compare/-/natural-compare-1.4.0.tgz#4abebfeed7541f2c27acfb29bdbbd15c8d5ba4f7"
@@ -4004,6 +4174,13 @@ nested-error-stacks@^2.0.0:
   dependencies:
     inherits "~2.0.1"
 
+node-abi@^2.2.0:
+  version "2.5.1"
+  resolved "https://registry.yarnpkg.com/node-abi/-/node-abi-2.5.1.tgz#bb17288fc3b2f68fea0ed9897c66979fd754ed47"
+  integrity sha512-oDbFc7vCFx0RWWCweTer3hFm1u+e60N5FtGnmRV6QqvgATGFH/XRR6vqWIeBVosCYCqt6YdIr2L0exLZuEdVcQ==
+  dependencies:
+    semver "^5.4.1"
+
 node-fetch@^2.1.1:
   version "2.1.2"
   resolved "https://registry.yarnpkg.com/node-fetch/-/node-fetch-2.1.2.tgz#ab884e8e7e57e38a944753cec706f788d1768bb5"
@@ -4036,6 +4213,11 @@ node-pre-gyp@^0.10.0:
     semver "^5.3.0"
     tar "^4"
 
+noop-logger@^0.1.1:
+  version "0.1.1"
+  resolved "https://registry.yarnpkg.com/noop-logger/-/noop-logger-0.1.1.tgz#94a2b1633c4f1317553007d8966fd0e841b6a4c2"
+  integrity sha1-lKKxYzxPExdVMAfYlm/Q6EG2pMI=
+
 nopt@^4.0.1:
   version "4.0.1"
   resolved "https://registry.yarnpkg.com/nopt/-/nopt-4.0.1.tgz#d0d4685afd5415193c8c7505602d0d17cd64474d"
@@ -4083,7 +4265,7 @@ npm-run-path@^2.0.0:
   dependencies:
     path-key "^2.0.0"
 
-npmlog@^4.0.2:
+npmlog@^4.0.1, npmlog@^4.0.2, npmlog@^4.1.2:
   version "4.1.2"
   resolved "https://registry.yarnpkg.com/npmlog/-/npmlog-4.1.2.tgz#08a7f2a8bf734604779a9efa4ad5cc717abb954b"
   dependencies:
@@ -4150,7 +4332,7 @@ object.pick@^1.3.0:
   dependencies:
     isobject "^3.0.1"
 
-once@^1.3.0, once@^1.4.0:
+once@^1.3.0, once@^1.3.1, once@^1.4.0:
   version "1.4.0"
   resolved "https://registry.yarnpkg.com/once/-/once-1.4.0.tgz#583b1aa775961d4b113ac17d9c50baef9dd76bd1"
   dependencies:
@@ -4205,7 +4387,7 @@ ora@2.1.0:
     strip-ansi "^4.0.0"
     wcwidth "^1.0.1"
 
-os-homedir@^1.0.0:
+os-homedir@^1.0.0, os-homedir@^1.0.1:
   version "1.0.2"
   resolved "https://registry.yarnpkg.com/os-homedir/-/os-homedir-1.0.2.tgz#ffbc4988336e0e833de0c168c7ef152121aa7fb3"
 
@@ -4439,6 +4621,28 @@ posix-character-classes@^0.1.0:
   version "0.1.1"
   resolved "https://registry.yarnpkg.com/posix-character-classes/-/posix-character-classes-0.1.1.tgz#01eac0fe3b5af71a2a6c02feabb8c1fef7e00eab"
 
+prebuild-install@^5.2.1:
+  version "5.2.2"
+  resolved "https://registry.yarnpkg.com/prebuild-install/-/prebuild-install-5.2.2.tgz#237888f21bfda441d0ee5f5612484390bccd4046"
+  integrity sha512-4e8VJnP3zJdZv/uP0eNWmr2r9urp4NECw7Mt1OSAi3rcLrbBRxGiAkfUFtre2MhQ5wfREAjRV+K1gubvs/GPsA==
+  dependencies:
+    detect-libc "^1.0.3"
+    expand-template "^2.0.3"
+    github-from-package "0.0.0"
+    minimist "^1.2.0"
+    mkdirp "^0.5.1"
+    napi-build-utils "^1.0.1"
+    node-abi "^2.2.0"
+    noop-logger "^0.1.1"
+    npmlog "^4.0.1"
+    os-homedir "^1.0.1"
+    pump "^2.0.1"
+    rc "^1.2.7"
+    simple-get "^2.7.0"
+    tar-fs "^1.13.0"
+    tunnel-agent "^0.6.0"
+    which-pm-runs "^1.0.0"
+
 prelude-ls@~1.1.2:
   version "1.1.2"
   resolved "https://registry.yarnpkg.com/prelude-ls/-/prelude-ls-1.1.2.tgz#21932a549f5e52ffd9a827f570e04be62a97da54"
@@ -4486,6 +4690,22 @@ pseudomap@^1.0.2:
   version "1.0.2"
   resolved "https://registry.yarnpkg.com/pseudomap/-/pseudomap-1.0.2.tgz#f052a28da70e618917ef0a8ac34c1ae5a68286b3"
 
+pump@^1.0.0:
+  version "1.0.3"
+  resolved "https://registry.yarnpkg.com/pump/-/pump-1.0.3.tgz#5dfe8311c33bbf6fc18261f9f34702c47c08a954"
+  integrity sha512-8k0JupWme55+9tCVE+FS5ULT3K6AbgqrGa58lTT49RpyfwwcGedHqaC5LlQNdEAumn/wFsu6aPwkuPMioy8kqw==
+  dependencies:
+    end-of-stream "^1.1.0"
+    once "^1.3.1"
+
+pump@^2.0.1:
+  version "2.0.1"
+  resolved "https://registry.yarnpkg.com/pump/-/pump-2.0.1.tgz#12399add6e4cf7526d973cbc8b5ce2e2908b3909"
+  integrity sha512-ruPMNRkN3MHP1cWJc9OWr+T/xDP0jhXYCLfJcBuX54hhfIBnaQmAUMfDcG4DM5UMWByBbJY69QSphm3jtDKIkA==
+  dependencies:
+    end-of-stream "^1.1.0"
+    once "^1.3.1"
+
 punycode@^1.4.1:
   version "1.4.1"
   resolved "https://registry.yarnpkg.com/punycode/-/punycode-1.4.1.tgz#c0d5a63b2718800ad8e1eb0fa5269c84dd41845e"
@@ -4539,6 +4759,16 @@ rc@^1.0.1, rc@^1.1.6, rc@^1.1.7:
     minimist "^1.2.0"
     strip-json-comments "~2.0.1"
 
+rc@^1.2.7:
+  version "1.2.8"
+  resolved "https://registry.yarnpkg.com/rc/-/rc-1.2.8.tgz#cd924bf5200a075b83c188cd6b9e211b7fc0d3ed"
+  integrity sha512-y3bGgqKj3QBdxLbLkomlohkvsA8gdAiUQlSBJnBhfn+BPxg4bc62d8TcBW15wavDfgexCgccckhcZvywyQYPOw==
+  dependencies:
+    deep-extend "^0.6.0"
+    ini "~1.3.0"
+    minimist "^1.2.0"
+    strip-json-comments "~2.0.1"
+
 read-pkg-up@^1.0.1:
   version "1.0.1"
   resolved "https://registry.yarnpkg.com/read-pkg-up/-/read-pkg-up-1.0.1.tgz#9d63c13276c065918d57f002a57f40a1b643fb02"
@@ -4584,7 +4814,7 @@ read-pkg@^3.0.0:
     normalize-package-data "^2.3.2"
     path-type "^3.0.0"
 
-readable-stream@^2.0.0, readable-stream@^2.0.1, readable-stream@^2.0.2, readable-stream@^2.0.6, readable-stream@^2.1.5, readable-stream@^2.2.2:
+readable-stream@^2.0.0, readable-stream@^2.0.1, readable-stream@^2.0.2, readable-stream@^2.0.6, readable-stream@^2.1.5, readable-stream@^2.2.2, readable-stream@^2.3.0, readable-stream@^2.3.5:
   version "2.3.6"
   resolved "https://registry.yarnpkg.com/readable-stream/-/readable-stream-2.3.6.tgz#b11c27d88b8ff1fbe070643cf94b0c79ae1b0aaf"
   dependencies:
@@ -4887,15 +5117,18 @@ rollup-plugin-commonjs@^9.0.0:
     resolve "^1.5.0"
     rollup-pluginutils "^2.0.1"
 
-rollup-plugin-filesize@^1.4.2:
-  version "1.5.0"
-  resolved "https://registry.yarnpkg.com/rollup-plugin-filesize/-/rollup-plugin-filesize-1.5.0.tgz#bb5841242d88be57f231c9e8a3a541925392178b"
+rollup-plugin-filesize@^6.0.0:
+  version "6.0.0"
+  resolved "https://registry.yarnpkg.com/rollup-plugin-filesize/-/rollup-plugin-filesize-6.0.0.tgz#6188769eff2ee6f4508e0f6de5cf64409e2a269d"
+  integrity sha512-yU1nNkB2RP1PwLpBFIzH9oIwLL+Si6AEuy0/hAhFW+68hy6x/W/MxhhsUe7bDhG7Gnei7FOGC4Ag4W9+CninMQ==
   dependencies:
-    boxen "^1.1.0"
-    colors "^1.1.2"
+    boxen "^2.0.0"
+    brotli-size "0.0.3"
+    colors "^1.3.2"
     deep-assign "^2.0.0"
-    filesize "^3.5.6"
-    gzip-size "^3.0.0"
+    filesize "^3.6.1"
+    gzip-size "^5.0.0"
+    terser "^3.10.0"
 
 rollup-plugin-node-resolve@^3.0.0:
   version "3.3.0"
@@ -4905,12 +5138,14 @@ rollup-plugin-node-resolve@^3.0.0:
     is-module "^1.0.0"
     resolve "^1.1.6"
 
-rollup-plugin-uglify@^4.0.0:
-  version "4.0.0"
-  resolved "https://registry.yarnpkg.com/rollup-plugin-uglify/-/rollup-plugin-uglify-4.0.0.tgz#6eb471738f1ce9ba7d9d4bc43b71cba02417c8fb"
+rollup-plugin-uglify@^5.0.0:
+  version "5.0.2"
+  resolved "https://registry.yarnpkg.com/rollup-plugin-uglify/-/rollup-plugin-uglify-5.0.2.tgz#3d7985faa9760a933eb451fcfb7f54bf76c0651d"
+  integrity sha512-CRRyMgKjTwTx1GXnn+v1VYV+6De5NyPB1UBStsQIQ+asrxvP7dK43cg2pf1vyFNr/NIHGvfYAR9Yo4j+5ZMQsw==
   dependencies:
-    "@babel/code-frame" "^7.0.0-beta.47"
-    uglify-js "^3.3.25"
+    "@babel/code-frame" "^7.0.0"
+    jest-worker "^23.2.0"
+    uglify-js "^3.4.8"
 
 rollup-pluginutils@^1.5.0:
   version "1.5.2"
@@ -4926,9 +5161,10 @@ rollup-pluginutils@^2.0.1:
     estree-walker "^0.5.2"
     micromatch "^2.3.11"
 
-rollup@^0.59.2:
-  version "0.59.2"
-  resolved "https://registry.yarnpkg.com/rollup/-/rollup-0.59.2.tgz#37011ed83947e4e1071b66f9e7d0574b144affc9"
+rollup@^0.60.0:
+  version "0.60.7"
+  resolved "https://registry.yarnpkg.com/rollup/-/rollup-0.60.7.tgz#2b62ef9306f719b1ab85a7814b3e6596ac51fae8"
+  integrity sha512-Uj5I1A2PnDgA79P+v1dsNs1IHVydNgeJdKWRfoEJJdNMmyx07TRYqUtPUINaZ/gDusncFy1SZsT3lJnBBI8CGw==
   dependencies:
     "@types/estree" "0.0.39"
     "@types/node" "*"
@@ -5062,6 +5298,20 @@ signal-exit@^3.0.0, signal-exit@^3.0.2:
   version "3.0.2"
   resolved "https://registry.yarnpkg.com/signal-exit/-/signal-exit-3.0.2.tgz#b5fdc08f1287ea1178628e415e25132b73646c6d"
 
+simple-concat@^1.0.0:
+  version "1.0.0"
+  resolved "https://registry.yarnpkg.com/simple-concat/-/simple-concat-1.0.0.tgz#7344cbb8b6e26fb27d66b2fc86f9f6d5997521c6"
+  integrity sha1-c0TLuLbib7J9ZrL8hvn21Zl1IcY=
+
+simple-get@^2.7.0:
+  version "2.8.1"
+  resolved "https://registry.yarnpkg.com/simple-get/-/simple-get-2.8.1.tgz#0e22e91d4575d87620620bc91308d57a77f44b5d"
+  integrity sha512-lSSHRSw3mQNUGPAYRqo7xy9dhKmxFXIjLjp4KHpf99GEH2VH7C3AM+Qfx6du6jhfUi6Vm7XnbEVEf7Wb6N8jRw==
+  dependencies:
+    decompress-response "^3.3.0"
+    once "^1.3.1"
+    simple-concat "^1.0.0"
+
 slash@^1.0.0:
   version "1.0.0"
   resolved "https://registry.yarnpkg.com/slash/-/slash-1.0.0.tgz#c41f2f6c39fc16d1cd17ad4b5d896114ae470d55"
@@ -5132,6 +5382,14 @@ source-map-support@^0.5.0:
     buffer-from "^1.0.0"
     source-map "^0.6.0"
 
+source-map-support@~0.5.6:
+  version "0.5.9"
+  resolved "https://registry.yarnpkg.com/source-map-support/-/source-map-support-0.5.9.tgz#41bc953b2534267ea2d605bccfa7bfa3111ced5f"
+  integrity sha512-gR6Rw4MvUlYy83vP0vxoVNzM6t8MUXqNuRsuBmBHQDu1Fh6X015FrLdgoDKcNdkwGubozq0P4N0Q37UyFVr1EA==
+  dependencies:
+    buffer-from "^1.0.0"
+    source-map "^0.6.0"
+
 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"
@@ -5249,6 +5507,15 @@ string-width@^2.0.0, string-width@^2.1.0, string-width@^2.1.1:
     is-fullwidth-code-point "^2.0.0"
     strip-ansi "^4.0.0"
 
+string-width@^3.0.0:
+  version "3.0.0"
+  resolved "https://registry.yarnpkg.com/string-width/-/string-width-3.0.0.tgz#5a1690a57cc78211fffd9bf24bbe24d090604eb1"
+  integrity sha512-rr8CUxBbvOZDUvc5lNIJ+OC1nPVpz+Siw9VBtUjB9b6jZehZLFt0JMCZzShFHIsI8cbhm0EsNIfWJMFV3cu3Ew==
+  dependencies:
+    emoji-regex "^7.0.1"
+    is-fullwidth-code-point "^2.0.0"
+    strip-ansi "^5.0.0"
+
 string_decoder@~1.1.1:
   version "1.1.1"
   resolved "https://registry.yarnpkg.com/string_decoder/-/string_decoder-1.1.1.tgz#9cf1611ba62685d7030ae9e4ba34149c3af03fc8"
@@ -5267,6 +5534,13 @@ strip-ansi@^4.0.0:
   dependencies:
     ansi-regex "^3.0.0"
 
+strip-ansi@^5.0.0:
+  version "5.0.0"
+  resolved "https://registry.yarnpkg.com/strip-ansi/-/strip-ansi-5.0.0.tgz#f78f68b5d0866c20b2c9b8c61b5298508dc8756f"
+  integrity sha512-Uu7gQyZI7J7gn5qLn1Np3G9vcYGTVqB+lFTytnDJv83dd8T22aGH451P3jueT2/QemInJDfxHB5Tde5OzgG1Ow==
+  dependencies:
+    ansi-regex "^4.0.0"
+
 strip-bom@3.0.0, strip-bom@^3.0.0:
   version "3.0.0"
   resolved "https://registry.yarnpkg.com/strip-bom/-/strip-bom-3.0.0.tgz#2334c18e9c759f7bdd56fdef7e9ae3d588e68ed3"
@@ -5330,6 +5604,29 @@ table@4.0.2:
     slice-ansi "1.0.0"
     string-width "^2.1.1"
 
+tar-fs@^1.13.0:
+  version "1.16.3"
+  resolved "https://registry.yarnpkg.com/tar-fs/-/tar-fs-1.16.3.tgz#966a628841da2c4010406a82167cbd5e0c72d509"
+  integrity sha512-NvCeXpYx7OsmOh8zIOP/ebG55zZmxLE0etfWRbWok+q2Qo8x/vOR/IJT1taADXPe+jsiu9axDb3X4B+iIgNlKw==
+  dependencies:
+    chownr "^1.0.1"
+    mkdirp "^0.5.1"
+    pump "^1.0.0"
+    tar-stream "^1.1.2"
+
+tar-stream@^1.1.2:
+  version "1.6.2"
+  resolved "https://registry.yarnpkg.com/tar-stream/-/tar-stream-1.6.2.tgz#8ea55dab37972253d9a9af90fdcd559ae435c555"
+  integrity sha512-rzS0heiNf8Xn7/mpdSVVSMAWAoy9bfb1WOTYC78Z0UQKeKa/CWS8FOq0lKGNa8DWKAn9gxjCvMLYc5PGXYlK2A==
+  dependencies:
+    bl "^1.0.0"
+    buffer-alloc "^1.2.0"
+    end-of-stream "^1.0.0"
+    fs-constants "^1.0.0"
+    readable-stream "^2.3.0"
+    to-buffer "^1.1.1"
+    xtend "^4.0.0"
+
 tar@^4:
   version "4.4.2"
   resolved "https://registry.yarnpkg.com/tar/-/tar-4.4.2.tgz#60685211ba46b38847b1ae7ee1a24d744a2cd462"
@@ -5348,6 +5645,15 @@ term-size@^1.2.0:
   dependencies:
     execa "^0.7.0"
 
+terser@^3.10.0:
+  version "3.14.1"
+  resolved "https://registry.yarnpkg.com/terser/-/terser-3.14.1.tgz#cc4764014af570bc79c79742358bd46926018a32"
+  integrity sha512-NSo3E99QDbYSMeJaEk9YW2lTg3qS9V0aKGlb+PlOrei1X02r1wSBHCNX/O+yeTRFSWPKPIGj6MqvvdqV4rnVGw==
+  dependencies:
+    commander "~2.17.1"
+    source-map "~0.6.1"
+    source-map-support "~0.5.6"
+
 test-exclude@^4.2.1:
   version "4.2.1"
   resolved "https://registry.yarnpkg.com/test-exclude/-/test-exclude-4.2.1.tgz#dfa222f03480bca69207ca728b37d74b45f724fa"
@@ -5406,6 +5712,11 @@ tmpl@1.0.x:
   version "1.0.4"
   resolved "https://registry.yarnpkg.com/tmpl/-/tmpl-1.0.4.tgz#23640dd7b42d00433911140820e5cf440e521dd1"
 
+to-buffer@^1.1.1:
+  version "1.1.1"
+  resolved "https://registry.yarnpkg.com/to-buffer/-/to-buffer-1.1.1.tgz#493bd48f62d7c43fcded313a03dcadb2e1213a80"
+  integrity sha512-lx9B5iv7msuFYE3dytT+KE5tap+rNYw+K4jVkb9R/asAb+pbBSM17jtunHplhBe6RRJdZx3Pn2Jph24O32mOVg==
+
 to-fast-properties@^1.0.3:
   version "1.0.3"
   resolved "https://registry.yarnpkg.com/to-fast-properties/-/to-fast-properties-1.0.3.tgz#b83571fa4d8c25b82e231b06e3a3055de4ca1a47"
@@ -5489,11 +5800,12 @@ uglify-js@^2.6:
   optionalDependencies:
     uglify-to-browserify "~1.0.0"
 
-uglify-js@^3.3.25:
-  version "3.3.26"
-  resolved "https://registry.yarnpkg.com/uglify-js/-/uglify-js-3.3.26.tgz#858b74e5e7262e876c834b907a5fa57d4fa0d525"
+uglify-js@^3.4.8:
+  version "3.4.9"
+  resolved "https://registry.yarnpkg.com/uglify-js/-/uglify-js-3.4.9.tgz#af02f180c1207d76432e473ed24a28f4a782bae3"
+  integrity sha512-8CJsbKOtEbnJsTyv6LE6m6ZKniqMiFWmm9sRbopbkGs3gMPPfd3Fh8iIA4Ykv5MgaTbqHr4BaoGLJLZNhsrW1Q==
   dependencies:
-    commander "~2.15.0"
+    commander "~2.17.1"
     source-map "~0.6.1"
 
 uglify-to-browserify@~1.0.0:
@@ -5666,6 +5978,11 @@ which-module@^2.0.0:
   version "2.0.0"
   resolved "https://registry.yarnpkg.com/which-module/-/which-module-2.0.0.tgz#d9ef07dce77b9902b8a3a8fa4b31c3e3f7e6e87a"
 
+which-pm-runs@^1.0.0:
+  version "1.0.0"
+  resolved "https://registry.yarnpkg.com/which-pm-runs/-/which-pm-runs-1.0.0.tgz#670b3afbc552e0b55df6b7780ca74615f23ad1cb"
+  integrity sha1-Zws6+8VS4LVd9rd4DKdGFfI60cs=
+
 which@^1.2.12, which@^1.2.9, which@^1.3.0:
   version "1.3.0"
   resolved "https://registry.yarnpkg.com/which/-/which-1.3.0.tgz#ff04bdfc010ee547d780bec38e1ac1c2777d253a"
@@ -5819,7 +6136,7 @@ xo@^0.21.1:
     update-notifier "^2.3.0"
     xo-init "^0.7.0"
 
-xtend@~4.0.1:
+xtend@^4.0.0, xtend@~4.0.1:
   version "4.0.1"
   resolved "https://registry.yarnpkg.com/xtend/-/xtend-4.0.1.tgz#a5c6d532be656e23db820efb943a1f04998d63af"