diff --git a/.flowcoverage b/.flowcoverage
deleted file mode 100644
index ea51a0f9a8f56..0000000000000
--- a/.flowcoverage
+++ /dev/null
@@ -1,17 +0,0 @@
-{
-  "excludeGlob": [
-    "node_modules/**",
-    "packages/**/__mocks__/*.js",
-    "packages/**/__tests__/*.js"
-  ],
-  "includeGlob": [
-    "packages/**/src/**/*.js"
-  ],
-  "outputDir": "flow-coverage",
-  "threshold": 90,
-  "type": [
-    "html",
-    "json",
-    "text"
-  ]
-}
\ No newline at end of file
diff --git a/.gitignore b/.gitignore
index bf3af85e9eb6e..53de0c289077e 100644
--- a/.gitignore
+++ b/.gitignore
@@ -9,7 +9,6 @@ __benchmarks__
 build/
 remote-repo/
 coverage/
-flow-coverage/
 .module-cache
 fixtures/dom/public/react-dom.js
 fixtures/dom/public/react.js
diff --git a/package.json b/package.json
index 8244d3fd4cc95..e8c9842c4b72c 100644
--- a/package.json
+++ b/package.json
@@ -55,7 +55,6 @@
     "fbjs-scripts": "^0.8.3",
     "filesize": "^3.5.6",
     "flow-bin": "^0.72.0",
-    "flow-coverage-report": "^0.4.0",
     "glob": "^6.0.4",
     "glob-stream": "^6.1.0",
     "google-closure-compiler": "20180506.0.0",
@@ -94,7 +93,6 @@
   },
   "scripts": {
     "build": "npm run version-check && node ./scripts/rollup/build.js",
-    "flow-coverage": "flow-coverage-report --config ./.flowcoverage",
     "linc": "node ./scripts/tasks/linc.js",
     "lint": "node ./scripts/tasks/eslint.js",
     "lint-build": "node ./scripts/rollup/validate/index.js",
diff --git a/yarn.lock b/yarn.lock
index 4c5816331176f..17cbf7aa36a34 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -236,7 +236,7 @@ are-we-there-yet@~1.1.2:
     delegates "^1.0.0"
     readable-stream "^2.0.6"
 
-argparse@^1.0.7, argparse@^1.0.9:
+argparse@^1.0.7:
   version "1.0.9"
   resolved "https://registry.yarnpkg.com/argparse/-/argparse-1.0.9.tgz#73d83bc263f86e97f8cc4f6bae1b0e90a7d22c86"
   dependencies:
@@ -297,7 +297,7 @@ array-unique@^0.3.2:
   version "0.3.2"
   resolved "https://registry.yarnpkg.com/array-unique/-/array-unique-0.3.2.tgz#a894b75d4bc4f6cd679ef3244a9fd8f46ae2d428"
 
-array.prototype.find@2.0.4, array.prototype.find@^2.0.1:
+array.prototype.find@^2.0.1:
   version "2.0.4"
   resolved "https://registry.yarnpkg.com/array.prototype.find/-/array.prototype.find-2.0.4.tgz#556a5c5362c08648323ddaeb9de9d14bc1864c90"
   dependencies:
@@ -782,7 +782,7 @@ babel-plugin-transform-flow-strip-types@^6.22.0, babel-plugin-transform-flow-str
     babel-plugin-syntax-flow "^6.18.0"
     babel-runtime "^6.22.0"
 
-babel-plugin-transform-object-rest-spread@^6.20.2, babel-plugin-transform-object-rest-spread@^6.6.5, babel-plugin-transform-object-rest-spread@^6.8.0:
+babel-plugin-transform-object-rest-spread@^6.6.5, babel-plugin-transform-object-rest-spread@^6.8.0:
   version "6.26.0"
   resolved "https://registry.yarnpkg.com/babel-plugin-transform-object-rest-spread/-/babel-plugin-transform-object-rest-spread-6.26.0.tgz#0f36692d50fef6b7e2d4b3ac1478137a963b7b06"
   dependencies:
@@ -913,13 +913,6 @@ babel-register@^6.26.0:
     mkdirp "^0.5.1"
     source-map-support "^0.4.15"
 
-babel-runtime@6.23.0:
-  version "6.23.0"
-  resolved "https://registry.yarnpkg.com/babel-runtime/-/babel-runtime-6.23.0.tgz#0a9489f144de70efb3ce4300accdb329e2fc543b"
-  dependencies:
-    core-js "^2.4.0"
-    regenerator-runtime "^0.10.0"
-
 babel-runtime@^6.18.0, babel-runtime@^6.22.0, babel-runtime@^6.26.0:
   version "6.26.0"
   resolved "https://registry.yarnpkg.com/babel-runtime/-/babel-runtime-6.26.0.tgz#965c7058668e82b55d7bfe04ff2337bc8b5647fe"
@@ -1272,7 +1265,7 @@ color-support@^1.1.3:
   version "1.1.3"
   resolved "https://registry.yarnpkg.com/color-support/-/color-support-1.1.3.tgz#93834379a1cc9a0c61f82f52f0d04322251bd5a2"
 
-colors@1.0.3, colors@^1.0.3:
+colors@1.0.3:
   version "1.0.3"
   resolved "https://registry.yarnpkg.com/colors/-/colors-1.0.3.tgz#0433f44d809680fdeb60ed260f1b0c262e82a40b"
 
@@ -1563,10 +1556,6 @@ duplexify@^3.1.2:
     readable-stream "^2.0.0"
     stream-shift "^1.0.0"
 
-eastasianwidth@^0.1.0:
-  version "0.1.1"
-  resolved "https://registry.yarnpkg.com/eastasianwidth/-/eastasianwidth-0.1.1.tgz#44d656de9da415694467335365fb3147b8572b7c"
-
 ecc-jsbn@~0.1.1:
   version "0.1.1"
   resolved "https://registry.yarnpkg.com/ecc-jsbn/-/ecc-jsbn-0.1.1.tgz#0fc73a9ed5f0d53c38193398523ef7e543777505"
@@ -1836,12 +1825,6 @@ expand-range@^1.8.1:
   dependencies:
     fill-range "^2.1.0"
 
-expand-tilde@^1.2.2:
-  version "1.2.2"
-  resolved "https://registry.yarnpkg.com/expand-tilde/-/expand-tilde-1.2.2.tgz#0b81eba897e5a3d31d1c3d102f8f01441e559449"
-  dependencies:
-    os-homedir "^1.0.1"
-
 expect@^23.1.0:
   version "23.1.0"
   resolved "https://registry.yarnpkg.com/expect/-/expect-23.1.0.tgz#bfdfd57a2a20170d875999ee9787cc71f01c205f"
@@ -1955,18 +1938,6 @@ fbjs-scripts@^0.8.3:
     semver "^5.1.0"
     through2 "^2.0.0"
 
-fbjs@^0.8.16:
-  version "0.8.17"
-  resolved "https://registry.yarnpkg.com/fbjs/-/fbjs-0.8.17.tgz#c4d598ead6949112653d6588b01a5cdcd9f90fdd"
-  dependencies:
-    core-js "^1.0.0"
-    isomorphic-fetch "^2.1.1"
-    loose-envify "^1.0.0"
-    object-assign "^4.1.0"
-    promise "^7.1.1"
-    setimmediate "^1.0.5"
-    ua-parser-js "^0.7.18"
-
 fbjs@^0.8.9:
   version "0.8.16"
   resolved "https://registry.yarnpkg.com/fbjs/-/fbjs-0.8.16.tgz#5e67432f550dc41b572bf55847b8aca64e5337db"
@@ -2026,19 +1997,6 @@ fill-range@^4.0.0:
     repeat-string "^1.6.1"
     to-regex-range "^2.1.0"
 
-find-file-up@^0.1.2:
-  version "0.1.3"
-  resolved "https://registry.yarnpkg.com/find-file-up/-/find-file-up-0.1.3.tgz#cf68091bcf9f300a40da411b37da5cce5a2fbea0"
-  dependencies:
-    fs-exists-sync "^0.1.0"
-    resolve-dir "^0.1.0"
-
-find-pkg@^0.1.0:
-  version "0.1.2"
-  resolved "https://registry.yarnpkg.com/find-pkg/-/find-pkg-0.1.2.tgz#1bdc22c06e36365532e2a248046854b9788da557"
-  dependencies:
-    find-file-up "^0.1.2"
-
 find-up@^1.0.0:
   version "1.1.2"
   resolved "https://registry.yarnpkg.com/find-up/-/find-up-1.1.2.tgz#6b2e9822b1a2ce0a60ab64d610eccad53cb24d0f"
@@ -2046,7 +2004,7 @@ find-up@^1.0.0:
     path-exists "^2.0.0"
     pinkie-promise "^2.0.0"
 
-find-up@^2.0.0, find-up@^2.1.0:
+find-up@^2.1.0:
   version "2.1.0"
   resolved "https://registry.yarnpkg.com/find-up/-/find-up-2.1.0.tgz#45d1b7e506c717ddd482775a2b77920a3c0c57a7"
   dependencies:
@@ -2061,37 +2019,10 @@ flat-cache@^1.2.1:
     graceful-fs "^4.1.2"
     write "^0.2.1"
 
-flow-annotation-check@1.3.1:
-  version "1.3.1"
-  resolved "https://registry.yarnpkg.com/flow-annotation-check/-/flow-annotation-check-1.3.1.tgz#6ee39747251431b1667039eeab807b6d2c297c8a"
-  dependencies:
-    argparse "^1.0.9"
-    babel-plugin-transform-object-rest-spread "^6.20.2"
-    glob "7.1.1"
-    load-pkg "^3.0.1"
-
 flow-bin@^0.72.0:
   version "0.72.0"
   resolved "https://registry.yarnpkg.com/flow-bin/-/flow-bin-0.72.0.tgz#12051180fb2db7ccb728fefe67c77e955e92a44d"
 
-flow-coverage-report@^0.4.0:
-  version "0.4.0"
-  resolved "https://registry.yarnpkg.com/flow-coverage-report/-/flow-coverage-report-0.4.0.tgz#97c1a0a5493e9b4aabc7e4252a80030085c83365"
-  dependencies:
-    array.prototype.find "2.0.4"
-    babel-runtime "6.23.0"
-    flow-annotation-check "1.3.1"
-    glob "7.1.1"
-    minimatch "3.0.4"
-    mkdirp "0.5.1"
-    parse-json "2.2.0"
-    react "15.5.4"
-    react-dom "15.5.4"
-    strip-json-comments "2.0.1"
-    temp "0.8.3"
-    terminal-table "0.0.12"
-    yargs "8.0.1"
-
 for-in@^1.0.1, for-in@^1.0.2:
   version "1.0.2"
   resolved "https://registry.yarnpkg.com/for-in/-/for-in-1.0.2.tgz#81068d295a8142ec0ac726c6e2200c30fb6d5e80"
@@ -2271,17 +2202,6 @@ glob-stream@^6.1.0:
     to-absolute-glob "^2.0.0"
     unique-stream "^2.0.2"
 
-glob@7.1.1:
-  version "7.1.1"
-  resolved "https://registry.yarnpkg.com/glob/-/glob-7.1.1.tgz#805211df04faaf1c63a3600306cdf5ade50b2ec8"
-  dependencies:
-    fs.realpath "^1.0.0"
-    inflight "^1.0.4"
-    inherits "2"
-    minimatch "^3.0.2"
-    once "^1.3.0"
-    path-is-absolute "^1.0.0"
-
 glob@^6.0.4:
   version "6.0.4"
   resolved "https://registry.yarnpkg.com/glob/-/glob-6.0.4.tgz#0f08860f6a155127b2fadd4f9ce24b1aab6e4d22"
@@ -2303,22 +2223,6 @@ glob@^7.0.3, glob@^7.0.5, glob@^7.1.1, glob@^7.1.2:
     once "^1.3.0"
     path-is-absolute "^1.0.0"
 
-global-modules@^0.2.3:
-  version "0.2.3"
-  resolved "https://registry.yarnpkg.com/global-modules/-/global-modules-0.2.3.tgz#ea5a3bed42c6d6ce995a4f8a1269b5dae223828d"
-  dependencies:
-    global-prefix "^0.1.4"
-    is-windows "^0.2.0"
-
-global-prefix@^0.1.4:
-  version "0.1.5"
-  resolved "https://registry.yarnpkg.com/global-prefix/-/global-prefix-0.1.5.tgz#8d3bc6b8da3ca8112a160d8d496ff0462bfef78f"
-  dependencies:
-    homedir-polyfill "^1.0.0"
-    ini "^1.3.4"
-    is-windows "^0.2.0"
-    which "^1.2.12"
-
 globals@^11.0.1, globals@^11.1.0:
   version "11.4.0"
   resolved "https://registry.yarnpkg.com/globals/-/globals-11.4.0.tgz#b85c793349561c16076a3c13549238a27945f1bc"
@@ -3418,21 +3322,6 @@ load-json-file@^1.0.0:
     pinkie-promise "^2.0.0"
     strip-bom "^2.0.0"
 
-load-json-file@^2.0.0:
-  version "2.0.0"
-  resolved "https://registry.yarnpkg.com/load-json-file/-/load-json-file-2.0.0.tgz#7947e42149af80d696cbf797bcaabcfe1fe29ca8"
-  dependencies:
-    graceful-fs "^4.1.2"
-    parse-json "^2.2.0"
-    pify "^2.0.0"
-    strip-bom "^3.0.0"
-
-load-pkg@^3.0.1:
-  version "3.0.1"
-  resolved "https://registry.yarnpkg.com/load-pkg/-/load-pkg-3.0.1.tgz#9230b37ec04e569003060bc58951e3ed508d594f"
-  dependencies:
-    find-pkg "^0.1.0"
-
 locate-path@^2.0.0:
   version "2.0.0"
   resolved "https://registry.yarnpkg.com/locate-path/-/locate-path-2.0.0.tgz#2b568b265eec944c6d9c0de9c3dbbbca0354cd8e"
@@ -3583,7 +3472,7 @@ mimic-fn@^1.0.0:
   version "1.1.0"
   resolved "https://registry.yarnpkg.com/mimic-fn/-/mimic-fn-1.1.0.tgz#e667783d92e89dbd342818b5230b9d62a672ad18"
 
-"minimatch@2 || 3", minimatch@3.0.4, minimatch@^3.0.2, minimatch@^3.0.3, minimatch@^3.0.4:
+"minimatch@2 || 3", minimatch@^3.0.2, minimatch@^3.0.3, minimatch@^3.0.4:
   version "3.0.4"
   resolved "https://registry.yarnpkg.com/minimatch/-/minimatch-3.0.4.tgz#5166e286457f03306064be5497e8dbb0c3d32083"
   dependencies:
@@ -3621,7 +3510,7 @@ mixin-deep@^1.2.0:
     for-in "^1.0.2"
     is-extendable "^1.0.1"
 
-mkdirp@0.5.1, mkdirp@^0.5.0, mkdirp@^0.5.1:
+mkdirp@^0.5.0, mkdirp@^0.5.1:
   version "0.5.1"
   resolved "https://registry.yarnpkg.com/mkdirp/-/mkdirp-0.5.1.tgz#30057438eac6cf7f8c4767f38648d6697d75c903"
   dependencies:
@@ -3879,7 +3768,7 @@ ordered-read-streams@^1.0.0:
     is-stream "^1.0.1"
     readable-stream "^2.0.1"
 
-os-homedir@^1.0.0, os-homedir@^1.0.1:
+os-homedir@^1.0.0:
   version "1.0.2"
   resolved "https://registry.yarnpkg.com/os-homedir/-/os-homedir-1.0.2.tgz#ffbc4988336e0e833de0c168c7ef152121aa7fb3"
 
@@ -3962,7 +3851,7 @@ parse-glob@^3.0.4:
     is-extglob "^1.0.0"
     is-glob "^2.0.0"
 
-parse-json@2.2.0, parse-json@^2.2.0:
+parse-json@^2.2.0:
   version "2.2.0"
   resolved "https://registry.yarnpkg.com/parse-json/-/parse-json-2.2.0.tgz#f480f40434ef80741f8469099f8dea18f55a4dc9"
   dependencies:
@@ -4024,12 +3913,6 @@ path-type@^1.0.0:
     pify "^2.0.0"
     pinkie-promise "^2.0.0"
 
-path-type@^2.0.0:
-  version "2.0.0"
-  resolved "https://registry.yarnpkg.com/path-type/-/path-type-2.0.0.tgz#f012ccb8415b7096fc2daa1054c3d72389594c73"
-  dependencies:
-    pify "^2.0.0"
-
 performance-now@^2.1.0:
   version "2.1.0"
   resolved "https://registry.yarnpkg.com/performance-now/-/performance-now-2.1.0.tgz#6309f4e0e5fa913ec1c69307ae364b4b377c9e7b"
@@ -4121,14 +4004,6 @@ promise@^7.1.1:
   dependencies:
     asap "~2.0.3"
 
-prop-types@^15.5.7:
-  version "15.6.1"
-  resolved "https://registry.yarnpkg.com/prop-types/-/prop-types-15.6.1.tgz#36644453564255ddda391191fb3a125cbdf654ca"
-  dependencies:
-    fbjs "^0.8.16"
-    loose-envify "^1.3.1"
-    object-assign "^4.1.1"
-
 prop-types@^15.6.2:
   version "15.6.2"
   resolved "https://registry.yarnpkg.com/prop-types/-/prop-types-15.6.2.tgz#05d5ca77b4453e985d60fc7ff8c859094a497102"
@@ -4136,13 +4011,6 @@ prop-types@^15.6.2:
     loose-envify "^1.3.1"
     object-assign "^4.1.1"
 
-prop-types@~15.5.7:
-  version "15.5.10"
-  resolved "https://registry.yarnpkg.com/prop-types/-/prop-types-15.5.10.tgz#2797dfc3126182e3a95e3dfbb2e893ddd7456154"
-  dependencies:
-    fbjs "^0.8.9"
-    loose-envify "^1.3.1"
-
 proxy-from-env@^1.0.0:
   version "1.0.0"
   resolved "https://registry.yarnpkg.com/proxy-from-env/-/proxy-from-env-1.0.0.tgz#33c50398f70ea7eb96d21f7b817630a55791c7ee"
@@ -4208,28 +4076,10 @@ rc@^1.1.7:
     minimist "^1.2.0"
     strip-json-comments "~2.0.1"
 
-react-dom@15.5.4:
-  version "15.5.4"
-  resolved "https://registry.yarnpkg.com/react-dom/-/react-dom-15.5.4.tgz#ba0c28786fd52ed7e4f2135fe0288d462aef93da"
-  dependencies:
-    fbjs "^0.8.9"
-    loose-envify "^1.1.0"
-    object-assign "^4.1.0"
-    prop-types "~15.5.7"
-
 react-lifecycles-compat@^3.0.2:
   version "3.0.2"
   resolved "https://registry.yarnpkg.com/react-lifecycles-compat/-/react-lifecycles-compat-3.0.2.tgz#7279047275bd727a912e25f734c0559527e84eff"
 
-react@15.5.4:
-  version "15.5.4"
-  resolved "https://registry.yarnpkg.com/react/-/react-15.5.4.tgz#fa83eb01506ab237cdc1c8c3b1cea8de012bf047"
-  dependencies:
-    fbjs "^0.8.9"
-    loose-envify "^1.1.0"
-    object-assign "^4.1.0"
-    prop-types "^15.5.7"
-
 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"
@@ -4237,13 +4087,6 @@ read-pkg-up@^1.0.1:
     find-up "^1.0.0"
     read-pkg "^1.0.0"
 
-read-pkg-up@^2.0.0:
-  version "2.0.0"
-  resolved "https://registry.yarnpkg.com/read-pkg-up/-/read-pkg-up-2.0.0.tgz#6b72a8048984e0c41e79510fd5e9fa99b3b549be"
-  dependencies:
-    find-up "^2.0.0"
-    read-pkg "^2.0.0"
-
 read-pkg@^1.0.0:
   version "1.1.0"
   resolved "https://registry.yarnpkg.com/read-pkg/-/read-pkg-1.1.0.tgz#f5ffaa5ecd29cb31c0474bca7d756b6bb29e3f28"
@@ -4252,14 +4095,6 @@ read-pkg@^1.0.0:
     normalize-package-data "^2.3.2"
     path-type "^1.0.0"
 
-read-pkg@^2.0.0:
-  version "2.0.0"
-  resolved "https://registry.yarnpkg.com/read-pkg/-/read-pkg-2.0.0.tgz#8ef1c0623c6a6db0dc6713c4bfac46332b2368f8"
-  dependencies:
-    load-json-file "^2.0.0"
-    normalize-package-data "^2.3.2"
-    path-type "^2.0.0"
-
 readable-stream@^2.0.0, readable-stream@^2.0.1, readable-stream@^2.0.2, readable-stream@^2.0.5, readable-stream@^2.0.6, readable-stream@^2.1.5, readable-stream@^2.2.2:
   version "2.3.6"
   resolved "https://registry.yarnpkg.com/readable-stream/-/readable-stream-2.3.6.tgz#b11c27d88b8ff1fbe070643cf94b0c79ae1b0aaf"
@@ -4291,7 +4126,7 @@ realpath-native@^1.0.0:
   dependencies:
     util.promisify "^1.0.0"
 
-regenerator-runtime@^0.10.0, regenerator-runtime@^0.10.5:
+regenerator-runtime@^0.10.5:
   version "0.10.5"
   resolved "https://registry.yarnpkg.com/regenerator-runtime/-/regenerator-runtime-0.10.5.tgz#336c3efc1220adcedda2c9fab67b5a7955a33658"
 
@@ -4431,13 +4266,6 @@ resolve-cwd@^2.0.0:
   dependencies:
     resolve-from "^3.0.0"
 
-resolve-dir@^0.1.0:
-  version "0.1.1"
-  resolved "https://registry.yarnpkg.com/resolve-dir/-/resolve-dir-0.1.1.tgz#b219259a5602fac5c5c496ad894a6e8cc430261e"
-  dependencies:
-    expand-tilde "^1.2.2"
-    global-modules "^0.2.3"
-
 resolve-from@^1.0.0:
   version "1.0.1"
   resolved "https://registry.yarnpkg.com/resolve-from/-/resolve-from-1.0.1.tgz#26cbfe935d1aeeeabb29bc3fe5aeb01e93d44226"
@@ -4487,10 +4315,6 @@ rimraf@^2.2.8, rimraf@^2.5.4, rimraf@^2.6.1:
   dependencies:
     glob "^7.0.5"
 
-rimraf@~2.2.6:
-  version "2.2.8"
-  resolved "https://registry.yarnpkg.com/rimraf/-/rimraf-2.2.8.tgz#e439be2aaee327321952730f99a8929e4fc50582"
-
 rollup-plugin-babel@^3.0.1:
   version "3.0.2"
   resolved "https://registry.yarnpkg.com/rollup-plugin-babel/-/rollup-plugin-babel-3.0.2.tgz#a2765dea0eaa8aece351c983573300d17497495b"
@@ -4883,7 +4707,7 @@ strip-eof@^1.0.0:
   version "1.0.0"
   resolved "https://registry.yarnpkg.com/strip-eof/-/strip-eof-1.0.0.tgz#bb43ff5598a6eb05d89b59fcd129c983313606bf"
 
-strip-json-comments@2.0.1, strip-json-comments@~2.0.1:
+strip-json-comments@~2.0.1:
   version "2.0.1"
   resolved "https://registry.yarnpkg.com/strip-json-comments/-/strip-json-comments-2.0.1.tgz#3c531942e908c2697c0ec344858c286c7ca0a60a"
 
@@ -4969,20 +4793,6 @@ targz@^1.0.1:
   dependencies:
     tar-fs "^1.8.1"
 
-temp@0.8.3:
-  version "0.8.3"
-  resolved "https://registry.yarnpkg.com/temp/-/temp-0.8.3.tgz#e0c6bc4d26b903124410e4fed81103014dfc1f59"
-  dependencies:
-    os-tmpdir "^1.0.0"
-    rimraf "~2.2.6"
-
-terminal-table@0.0.12:
-  version "0.0.12"
-  resolved "https://registry.yarnpkg.com/terminal-table/-/terminal-table-0.0.12.tgz#7b56d009aa6828dfdd10f11b654e79c062965fa2"
-  dependencies:
-    colors "^1.0.3"
-    eastasianwidth "^0.1.0"
-
 test-exclude@^4.2.1:
   version "4.2.1"
   resolved "https://registry.yarnpkg.com/test-exclude/-/test-exclude-4.2.1.tgz#dfa222f03480bca69207ca728b37d74b45f724fa"
@@ -5130,7 +4940,7 @@ typescript@~1.8.10:
   version "1.8.10"
   resolved "https://registry.yarnpkg.com/typescript/-/typescript-1.8.10.tgz#b475d6e0dff0bf50f296e5ca6ef9fbb5c7320f1e"
 
-ua-parser-js@^0.7.18, ua-parser-js@^0.7.9:
+ua-parser-js@^0.7.9:
   version "0.7.18"
   resolved "https://registry.yarnpkg.com/ua-parser-js/-/ua-parser-js-0.7.18.tgz#a7bfd92f56edfb117083b69e31d2aa8882d4b1ed"
 
@@ -5407,36 +5217,12 @@ yargs-parser@^2.4.1:
     camelcase "^3.0.0"
     lodash.assign "^4.0.6"
 
-yargs-parser@^7.0.0:
-  version "7.0.0"
-  resolved "https://registry.yarnpkg.com/yargs-parser/-/yargs-parser-7.0.0.tgz#8d0ac42f16ea55debd332caf4c4038b3e3f5dfd9"
-  dependencies:
-    camelcase "^4.1.0"
-
 yargs-parser@^9.0.2:
   version "9.0.2"
   resolved "https://registry.yarnpkg.com/yargs-parser/-/yargs-parser-9.0.2.tgz#9ccf6a43460fe4ed40a9bb68f48d43b8a68cc077"
   dependencies:
     camelcase "^4.1.0"
 
-yargs@8.0.1:
-  version "8.0.1"
-  resolved "https://registry.yarnpkg.com/yargs/-/yargs-8.0.1.tgz#420ef75e840c1457a80adcca9bc6fa3849de51aa"
-  dependencies:
-    camelcase "^4.1.0"
-    cliui "^3.2.0"
-    decamelize "^1.1.1"
-    get-caller-file "^1.0.1"
-    os-locale "^2.0.0"
-    read-pkg-up "^2.0.0"
-    require-directory "^2.1.1"
-    require-main-filename "^1.0.1"
-    set-blocking "^2.0.0"
-    string-width "^2.0.0"
-    which-module "^2.0.0"
-    y18n "^3.2.1"
-    yargs-parser "^7.0.0"
-
 yargs@^11.0.0:
   version "11.0.0"
   resolved "https://registry.yarnpkg.com/yargs/-/yargs-11.0.0.tgz#c052931006c5eee74610e5fc0354bedfd08a201b"