diff --git a/frontend/package.json b/frontend/package.json
index ff5e1a5902..3633e88fb2 100644
--- a/frontend/package.json
+++ b/frontend/package.json
@@ -73,7 +73,7 @@
     "eslint-plugin-react": "^7.3.0",
     "extract-text-webpack-plugin": "^3.0.0",
     "identity-obj-proxy": "^3.0.0",
-    "jest": "^20.0.4",
+    "jest": "^21.0.0",
     "node-sass": "^4.5.3",
     "prettier": "^1.8.2",
     "react-test-renderer": "^15.6.1",
diff --git a/frontend/yarn.lock b/frontend/yarn.lock
index db1d21f0b1..5043c870a7 100644
--- a/frontend/yarn.lock
+++ b/frontend/yarn.lock
@@ -83,10 +83,6 @@ amdefine@>=0.0.4:
   version "1.0.1"
   resolved "https://registry.yarnpkg.com/amdefine/-/amdefine-1.0.1.tgz#4a5282ac164729e93619bcfd3ad151f817ce91f5"
 
-ansi-escapes@^1.4.0:
-  version "1.4.0"
-  resolved "https://registry.yarnpkg.com/ansi-escapes/-/ansi-escapes-1.4.0.tgz#d3a8a83b319aa67793662b13e761c7911422306e"
-
 ansi-escapes@^3.0.0:
   version "3.0.0"
   resolved "https://registry.yarnpkg.com/ansi-escapes/-/ansi-escapes-3.0.0.tgz#ec3e8b4e9f8064fc02c3ac9b65f1c275bda8ef92"
@@ -95,7 +91,7 @@ ansi-html@0.0.7:
   version "0.0.7"
   resolved "https://registry.yarnpkg.com/ansi-html/-/ansi-html-0.0.7.tgz#813584021962a9e9e6fd039f940d12f56ca7859e"
 
-ansi-regex@^2.0.0, ansi-regex@^2.1.1:
+ansi-regex@^2.0.0:
   version "2.1.1"
   resolved "https://registry.yarnpkg.com/ansi-regex/-/ansi-regex-2.1.1.tgz#c3b33ab5ee360d86e0e628f0468ae7ef27d654df"
 
@@ -107,7 +103,7 @@ ansi-styles@^2.2.1:
   version "2.2.1"
   resolved "https://registry.yarnpkg.com/ansi-styles/-/ansi-styles-2.2.1.tgz#b432dd3358b634cf75e1e4664368240533c1ddbe"
 
-ansi-styles@^3.0.0, ansi-styles@^3.1.0:
+ansi-styles@^3.1.0, ansi-styles@^3.2.0:
   version "3.2.0"
   resolved "https://registry.yarnpkg.com/ansi-styles/-/ansi-styles-3.2.0.tgz#c159b8d5be0f9e5a6f346dab94f16ce022161b88"
   dependencies:
@@ -224,6 +220,10 @@ assert@^1.1.1:
   dependencies:
     util "0.10.3"
 
+astral-regex@^1.0.0:
+  version "1.0.0"
+  resolved "https://registry.yarnpkg.com/astral-regex/-/astral-regex-1.0.0.tgz#6c8c3fb827dd43ee3918f27b82782ab7658a6fd9"
+
 async-each@^1.0.0:
   version "1.0.1"
   resolved "https://registry.yarnpkg.com/async-each/-/async-each-1.0.1.tgz#19d386a1d9edc6e7c1c85d388aedbcc56d33602d"
@@ -449,13 +449,12 @@ babel-helpers@^6.24.1:
     babel-runtime "^6.22.0"
     babel-template "^6.24.1"
 
-babel-jest@^20.0.3:
-  version "20.0.3"
-  resolved "https://registry.yarnpkg.com/babel-jest/-/babel-jest-20.0.3.tgz#e4a03b13dc10389e140fc645d09ffc4ced301671"
+babel-jest@^21.2.0:
+  version "21.2.0"
+  resolved "https://registry.yarnpkg.com/babel-jest/-/babel-jest-21.2.0.tgz#2ce059519a9374a2c46f2455b6fbef5ad75d863e"
   dependencies:
-    babel-core "^6.0.0"
     babel-plugin-istanbul "^4.0.0"
-    babel-preset-jest "^20.0.3"
+    babel-preset-jest "^21.2.0"
 
 babel-loader@^7.1.1:
   version "7.1.2"
@@ -485,9 +484,9 @@ babel-plugin-istanbul@^4.0.0:
     istanbul-lib-instrument "^1.7.5"
     test-exclude "^4.1.1"
 
-babel-plugin-jest-hoist@^20.0.3:
-  version "20.0.3"
-  resolved "https://registry.yarnpkg.com/babel-plugin-jest-hoist/-/babel-plugin-jest-hoist-20.0.3.tgz#afedc853bd3f8dc3548ea671fbe69d03cc2c1767"
+babel-plugin-jest-hoist@^21.2.0:
+  version "21.2.0"
+  resolved "https://registry.yarnpkg.com/babel-plugin-jest-hoist/-/babel-plugin-jest-hoist-21.2.0.tgz#2cef637259bd4b628a6cace039de5fcd14dbb006"
 
 babel-plugin-react-transform@^2.0.2:
   version "2.0.2"
@@ -543,7 +542,7 @@ babel-plugin-syntax-jsx@^6.3.13, babel-plugin-syntax-jsx@^6.8.0:
   version "6.18.0"
   resolved "https://registry.yarnpkg.com/babel-plugin-syntax-jsx/-/babel-plugin-syntax-jsx-6.18.0.tgz#0af32a9a6e13ca7a3fd5069e62d7b0f58d0d8946"
 
-babel-plugin-syntax-object-rest-spread@^6.8.0:
+babel-plugin-syntax-object-rest-spread@^6.13.0, babel-plugin-syntax-object-rest-spread@^6.8.0:
   version "6.13.0"
   resolved "https://registry.yarnpkg.com/babel-plugin-syntax-object-rest-spread/-/babel-plugin-syntax-object-rest-spread-6.13.0.tgz#fd6536f2bce13836ffa3a5458c4903a597bb3bf5"
 
@@ -889,11 +888,12 @@ babel-preset-flow@^6.23.0:
   dependencies:
     babel-plugin-transform-flow-strip-types "^6.22.0"
 
-babel-preset-jest@^20.0.3:
-  version "20.0.3"
-  resolved "https://registry.yarnpkg.com/babel-preset-jest/-/babel-preset-jest-20.0.3.tgz#cbacaadecb5d689ca1e1de1360ebfc66862c178a"
+babel-preset-jest@^21.2.0:
+  version "21.2.0"
+  resolved "https://registry.yarnpkg.com/babel-preset-jest/-/babel-preset-jest-21.2.0.tgz#ff9d2bce08abd98e8a36d9a8a5189b9173b85638"
   dependencies:
-    babel-plugin-jest-hoist "^20.0.3"
+    babel-plugin-jest-hoist "^21.2.0"
+    babel-plugin-syntax-object-rest-spread "^6.13.0"
 
 babel-preset-react-hmre@^1.1.1:
   version "1.1.1"
@@ -1174,12 +1174,6 @@ browserslist@^1.3.6, browserslist@^1.5.2, browserslist@^1.7.6:
     caniuse-db "^1.0.30000639"
     electron-to-chromium "^1.2.7"
 
-bser@1.0.2:
-  version "1.0.2"
-  resolved "https://registry.yarnpkg.com/bser/-/bser-1.0.2.tgz#381116970b2a6deea5646dd15dd7278444b56169"
-  dependencies:
-    node-int64 "^0.4.0"
-
 bser@^2.0.0:
   version "2.0.0"
   resolved "https://registry.yarnpkg.com/bser/-/bser-2.0.0.tgz#9ac78d3ed5d915804fd87acb158bc797147a1719"
@@ -1285,7 +1279,7 @@ chalk@^1.1.1, chalk@^1.1.3:
     strip-ansi "^3.0.0"
     supports-color "^2.0.0"
 
-chalk@^2.0.0, chalk@^2.1.0, chalk@^2.3.0:
+chalk@^2.0.0, chalk@^2.0.1, chalk@^2.1.0, chalk@^2.3.0:
   version "2.3.0"
   resolved "https://registry.yarnpkg.com/chalk/-/chalk-2.3.0.tgz#b5ea48efc9c1793dccc9b4767c93914d3f2d52ba"
   dependencies:
@@ -2248,6 +2242,17 @@ expand-range@^1.8.1:
   dependencies:
     fill-range "^2.1.0"
 
+expect@^21.2.1:
+  version "21.2.1"
+  resolved "https://registry.yarnpkg.com/expect/-/expect-21.2.1.tgz#003ac2ac7005c3c29e73b38a272d4afadd6d1d7b"
+  dependencies:
+    ansi-styles "^3.2.0"
+    jest-diff "^21.2.1"
+    jest-get-type "^21.2.0"
+    jest-matcher-utils "^21.2.1"
+    jest-message-util "^21.2.1"
+    jest-regex-util "^21.2.0"
+
 express@^4.13.3:
   version "4.16.2"
   resolved "https://registry.yarnpkg.com/express/-/express-4.16.2.tgz#e35c6dfe2d64b7dca0a5cd4f21781be3299e076c"
@@ -2346,12 +2351,6 @@ faye-websocket@~0.11.0:
   dependencies:
     websocket-driver ">=0.5.1"
 
-fb-watchman@^1.8.0:
-  version "1.9.2"
-  resolved "https://registry.yarnpkg.com/fb-watchman/-/fb-watchman-1.9.2.tgz#a24cf47827f82d38fb59a69ad70b76e3b6ae7383"
-  dependencies:
-    bser "1.0.2"
-
 fb-watchman@^2.0.0:
   version "2.0.0"
   resolved "https://registry.yarnpkg.com/fb-watchman/-/fb-watchman-2.0.0.tgz#54e9abf7dfa2f26cd9b1636c588c1afc05de5d58"
@@ -2506,7 +2505,7 @@ fs.realpath@^1.0.0:
   version "1.0.0"
   resolved "https://registry.yarnpkg.com/fs.realpath/-/fs.realpath-1.0.0.tgz#1504ad2523158caa40db4a2787cb01411994ea4f"
 
-fsevents@^1.0.0:
+fsevents@^1.0.0, fsevents@^1.1.1:
   version "1.1.3"
   resolved "https://registry.yarnpkg.com/fsevents/-/fsevents-1.1.3.tgz#11f82318f5fe7bb2cd22965a108e9306208216d8"
   dependencies:
@@ -3268,220 +3267,230 @@ istanbul-reports@^1.1.3:
   dependencies:
     handlebars "^4.0.3"
 
-jest-changed-files@^20.0.3:
-  version "20.0.3"
-  resolved "https://registry.yarnpkg.com/jest-changed-files/-/jest-changed-files-20.0.3.tgz#9394d5cc65c438406149bef1bf4d52b68e03e3f8"
-
-jest-cli@^20.0.4:
-  version "20.0.4"
-  resolved "https://registry.yarnpkg.com/jest-cli/-/jest-cli-20.0.4.tgz#e532b19d88ae5bc6c417e8b0593a6fe954b1dc93"
+jest-changed-files@^21.2.0:
+  version "21.2.0"
+  resolved "https://registry.yarnpkg.com/jest-changed-files/-/jest-changed-files-21.2.0.tgz#5dbeecad42f5d88b482334902ce1cba6d9798d29"
   dependencies:
-    ansi-escapes "^1.4.0"
-    callsites "^2.0.0"
-    chalk "^1.1.3"
+    throat "^4.0.0"
+
+jest-cli@^21.2.1:
+  version "21.2.1"
+  resolved "https://registry.yarnpkg.com/jest-cli/-/jest-cli-21.2.1.tgz#9c528b6629d651911138d228bdb033c157ec8c00"
+  dependencies:
+    ansi-escapes "^3.0.0"
+    chalk "^2.0.1"
+    glob "^7.1.2"
     graceful-fs "^4.1.11"
     is-ci "^1.0.10"
     istanbul-api "^1.1.1"
     istanbul-lib-coverage "^1.0.1"
     istanbul-lib-instrument "^1.4.2"
     istanbul-lib-source-maps "^1.1.0"
-    jest-changed-files "^20.0.3"
-    jest-config "^20.0.4"
-    jest-docblock "^20.0.3"
-    jest-environment-jsdom "^20.0.3"
-    jest-haste-map "^20.0.4"
-    jest-jasmine2 "^20.0.4"
-    jest-message-util "^20.0.3"
-    jest-regex-util "^20.0.3"
-    jest-resolve-dependencies "^20.0.3"
-    jest-runtime "^20.0.4"
-    jest-snapshot "^20.0.3"
-    jest-util "^20.0.3"
+    jest-changed-files "^21.2.0"
+    jest-config "^21.2.1"
+    jest-environment-jsdom "^21.2.1"
+    jest-haste-map "^21.2.0"
+    jest-message-util "^21.2.1"
+    jest-regex-util "^21.2.0"
+    jest-resolve-dependencies "^21.2.0"
+    jest-runner "^21.2.1"
+    jest-runtime "^21.2.1"
+    jest-snapshot "^21.2.1"
+    jest-util "^21.2.1"
     micromatch "^2.3.11"
     node-notifier "^5.0.2"
-    pify "^2.3.0"
+    pify "^3.0.0"
     slash "^1.0.0"
-    string-length "^1.0.1"
-    throat "^3.0.0"
+    string-length "^2.0.0"
+    strip-ansi "^4.0.0"
     which "^1.2.12"
     worker-farm "^1.3.1"
-    yargs "^7.0.2"
+    yargs "^9.0.0"
 
-jest-config@^20.0.4:
-  version "20.0.4"
-  resolved "https://registry.yarnpkg.com/jest-config/-/jest-config-20.0.4.tgz#e37930ab2217c913605eff13e7bd763ec48faeea"
+jest-config@^21.2.1:
+  version "21.2.1"
+  resolved "https://registry.yarnpkg.com/jest-config/-/jest-config-21.2.1.tgz#c7586c79ead0bcc1f38c401e55f964f13bf2a480"
   dependencies:
-    chalk "^1.1.3"
+    chalk "^2.0.1"
     glob "^7.1.1"
-    jest-environment-jsdom "^20.0.3"
-    jest-environment-node "^20.0.3"
-    jest-jasmine2 "^20.0.4"
-    jest-matcher-utils "^20.0.3"
-    jest-regex-util "^20.0.3"
-    jest-resolve "^20.0.4"
-    jest-validate "^20.0.3"
-    pretty-format "^20.0.3"
+    jest-environment-jsdom "^21.2.1"
+    jest-environment-node "^21.2.1"
+    jest-get-type "^21.2.0"
+    jest-jasmine2 "^21.2.1"
+    jest-regex-util "^21.2.0"
+    jest-resolve "^21.2.0"
+    jest-util "^21.2.1"
+    jest-validate "^21.2.1"
+    pretty-format "^21.2.1"
 
-jest-diff@^20.0.3:
-  version "20.0.3"
-  resolved "https://registry.yarnpkg.com/jest-diff/-/jest-diff-20.0.3.tgz#81f288fd9e675f0fb23c75f1c2b19445fe586617"
+jest-diff@^21.2.1:
+  version "21.2.1"
+  resolved "https://registry.yarnpkg.com/jest-diff/-/jest-diff-21.2.1.tgz#46cccb6cab2d02ce98bc314011764bb95b065b4f"
   dependencies:
-    chalk "^1.1.3"
+    chalk "^2.0.1"
     diff "^3.2.0"
-    jest-matcher-utils "^20.0.3"
-    pretty-format "^20.0.3"
+    jest-get-type "^21.2.0"
+    pretty-format "^21.2.1"
 
-jest-docblock@^20.0.3:
-  version "20.0.3"
-  resolved "https://registry.yarnpkg.com/jest-docblock/-/jest-docblock-20.0.3.tgz#17bea984342cc33d83c50fbe1545ea0efaa44712"
-
-jest-docblock@^21.0.0:
+jest-docblock@^21.0.0, jest-docblock@^21.2.0:
   version "21.2.0"
   resolved "https://registry.yarnpkg.com/jest-docblock/-/jest-docblock-21.2.0.tgz#51529c3b30d5fd159da60c27ceedc195faf8d414"
 
-jest-environment-jsdom@^20.0.3:
-  version "20.0.3"
-  resolved "https://registry.yarnpkg.com/jest-environment-jsdom/-/jest-environment-jsdom-20.0.3.tgz#048a8ac12ee225f7190417713834bb999787de99"
+jest-environment-jsdom@^21.2.1:
+  version "21.2.1"
+  resolved "https://registry.yarnpkg.com/jest-environment-jsdom/-/jest-environment-jsdom-21.2.1.tgz#38d9980c8259b2a608ec232deee6289a60d9d5b4"
   dependencies:
-    jest-mock "^20.0.3"
-    jest-util "^20.0.3"
+    jest-mock "^21.2.0"
+    jest-util "^21.2.1"
     jsdom "^9.12.0"
 
-jest-environment-node@^20.0.3:
-  version "20.0.3"
-  resolved "https://registry.yarnpkg.com/jest-environment-node/-/jest-environment-node-20.0.3.tgz#d488bc4612af2c246e986e8ae7671a099163d403"
+jest-environment-node@^21.2.1:
+  version "21.2.1"
+  resolved "https://registry.yarnpkg.com/jest-environment-node/-/jest-environment-node-21.2.1.tgz#98c67df5663c7fbe20f6e792ac2272c740d3b8c8"
   dependencies:
-    jest-mock "^20.0.3"
-    jest-util "^20.0.3"
+    jest-mock "^21.2.0"
+    jest-util "^21.2.1"
 
-jest-haste-map@^20.0.4:
-  version "20.0.5"
-  resolved "https://registry.yarnpkg.com/jest-haste-map/-/jest-haste-map-20.0.5.tgz#abad74efb1a005974a7b6517e11010709cab9112"
+jest-get-type@^21.2.0:
+  version "21.2.0"
+  resolved "https://registry.yarnpkg.com/jest-get-type/-/jest-get-type-21.2.0.tgz#f6376ab9db4b60d81e39f30749c6c466f40d4a23"
+
+jest-haste-map@^21.2.0:
+  version "21.2.0"
+  resolved "https://registry.yarnpkg.com/jest-haste-map/-/jest-haste-map-21.2.0.tgz#1363f0a8bb4338f24f001806571eff7a4b2ff3d8"
   dependencies:
     fb-watchman "^2.0.0"
     graceful-fs "^4.1.11"
-    jest-docblock "^20.0.3"
+    jest-docblock "^21.2.0"
     micromatch "^2.3.11"
-    sane "~1.6.0"
+    sane "^2.0.0"
     worker-farm "^1.3.1"
 
-jest-jasmine2@^20.0.4:
-  version "20.0.4"
-  resolved "https://registry.yarnpkg.com/jest-jasmine2/-/jest-jasmine2-20.0.4.tgz#fcc5b1411780d911d042902ef1859e852e60d5e1"
+jest-jasmine2@^21.2.1:
+  version "21.2.1"
+  resolved "https://registry.yarnpkg.com/jest-jasmine2/-/jest-jasmine2-21.2.1.tgz#9cc6fc108accfa97efebce10c4308548a4ea7592"
   dependencies:
-    chalk "^1.1.3"
+    chalk "^2.0.1"
+    expect "^21.2.1"
     graceful-fs "^4.1.11"
-    jest-diff "^20.0.3"
-    jest-matcher-utils "^20.0.3"
-    jest-matchers "^20.0.3"
-    jest-message-util "^20.0.3"
-    jest-snapshot "^20.0.3"
-    once "^1.4.0"
-    p-map "^1.1.1"
+    jest-diff "^21.2.1"
+    jest-matcher-utils "^21.2.1"
+    jest-message-util "^21.2.1"
+    jest-snapshot "^21.2.1"
+    p-cancelable "^0.3.0"
 
-jest-matcher-utils@^20.0.3:
-  version "20.0.3"
-  resolved "https://registry.yarnpkg.com/jest-matcher-utils/-/jest-matcher-utils-20.0.3.tgz#b3a6b8e37ca577803b0832a98b164f44b7815612"
+jest-matcher-utils@^21.2.1:
+  version "21.2.1"
+  resolved "https://registry.yarnpkg.com/jest-matcher-utils/-/jest-matcher-utils-21.2.1.tgz#72c826eaba41a093ac2b4565f865eb8475de0f64"
   dependencies:
-    chalk "^1.1.3"
-    pretty-format "^20.0.3"
+    chalk "^2.0.1"
+    jest-get-type "^21.2.0"
+    pretty-format "^21.2.1"
 
-jest-matchers@^20.0.3:
-  version "20.0.3"
-  resolved "https://registry.yarnpkg.com/jest-matchers/-/jest-matchers-20.0.3.tgz#ca69db1c32db5a6f707fa5e0401abb55700dfd60"
+jest-message-util@^21.2.1:
+  version "21.2.1"
+  resolved "https://registry.yarnpkg.com/jest-message-util/-/jest-message-util-21.2.1.tgz#bfe5d4692c84c827d1dcf41823795558f0a1acbe"
   dependencies:
-    jest-diff "^20.0.3"
-    jest-matcher-utils "^20.0.3"
-    jest-message-util "^20.0.3"
-    jest-regex-util "^20.0.3"
-
-jest-message-util@^20.0.3:
-  version "20.0.3"
-  resolved "https://registry.yarnpkg.com/jest-message-util/-/jest-message-util-20.0.3.tgz#6aec2844306fcb0e6e74d5796c1006d96fdd831c"
-  dependencies:
-    chalk "^1.1.3"
+    chalk "^2.0.1"
     micromatch "^2.3.11"
     slash "^1.0.0"
 
-jest-mock@^20.0.3:
-  version "20.0.3"
-  resolved "https://registry.yarnpkg.com/jest-mock/-/jest-mock-20.0.3.tgz#8bc070e90414aa155c11a8d64c869a0d5c71da59"
+jest-mock@^21.2.0:
+  version "21.2.0"
+  resolved "https://registry.yarnpkg.com/jest-mock/-/jest-mock-21.2.0.tgz#7eb0770e7317968165f61ea2a7281131534b3c0f"
 
-jest-regex-util@^20.0.3:
-  version "20.0.3"
-  resolved "https://registry.yarnpkg.com/jest-regex-util/-/jest-regex-util-20.0.3.tgz#85bbab5d133e44625b19faf8c6aa5122d085d762"
+jest-regex-util@^21.2.0:
+  version "21.2.0"
+  resolved "https://registry.yarnpkg.com/jest-regex-util/-/jest-regex-util-21.2.0.tgz#1b1e33e63143babc3e0f2e6c9b5ba1eb34b2d530"
 
-jest-resolve-dependencies@^20.0.3:
-  version "20.0.3"
-  resolved "https://registry.yarnpkg.com/jest-resolve-dependencies/-/jest-resolve-dependencies-20.0.3.tgz#6e14a7b717af0f2cb3667c549de40af017b1723a"
+jest-resolve-dependencies@^21.2.0:
+  version "21.2.0"
+  resolved "https://registry.yarnpkg.com/jest-resolve-dependencies/-/jest-resolve-dependencies-21.2.0.tgz#9e231e371e1a736a1ad4e4b9a843bc72bfe03d09"
   dependencies:
-    jest-regex-util "^20.0.3"
+    jest-regex-util "^21.2.0"
 
-jest-resolve@^20.0.4:
-  version "20.0.4"
-  resolved "https://registry.yarnpkg.com/jest-resolve/-/jest-resolve-20.0.4.tgz#9448b3e8b6bafc15479444c6499045b7ffe597a5"
+jest-resolve@^21.2.0:
+  version "21.2.0"
+  resolved "https://registry.yarnpkg.com/jest-resolve/-/jest-resolve-21.2.0.tgz#068913ad2ba6a20218e5fd32471f3874005de3a6"
   dependencies:
     browser-resolve "^1.11.2"
+    chalk "^2.0.1"
     is-builtin-module "^1.0.0"
-    resolve "^1.3.2"
 
-jest-runtime@^20.0.4:
-  version "20.0.4"
-  resolved "https://registry.yarnpkg.com/jest-runtime/-/jest-runtime-20.0.4.tgz#a2c802219c4203f754df1404e490186169d124d8"
+jest-runner@^21.2.1:
+  version "21.2.1"
+  resolved "https://registry.yarnpkg.com/jest-runner/-/jest-runner-21.2.1.tgz#194732e3e518bfb3d7cbfc0fd5871246c7e1a467"
+  dependencies:
+    jest-config "^21.2.1"
+    jest-docblock "^21.2.0"
+    jest-haste-map "^21.2.0"
+    jest-jasmine2 "^21.2.1"
+    jest-message-util "^21.2.1"
+    jest-runtime "^21.2.1"
+    jest-util "^21.2.1"
+    pify "^3.0.0"
+    throat "^4.0.0"
+    worker-farm "^1.3.1"
+
+jest-runtime@^21.2.1:
+  version "21.2.1"
+  resolved "https://registry.yarnpkg.com/jest-runtime/-/jest-runtime-21.2.1.tgz#99dce15309c670442eee2ebe1ff53a3cbdbbb73e"
   dependencies:
     babel-core "^6.0.0"
-    babel-jest "^20.0.3"
+    babel-jest "^21.2.0"
     babel-plugin-istanbul "^4.0.0"
-    chalk "^1.1.3"
+    chalk "^2.0.1"
     convert-source-map "^1.4.0"
     graceful-fs "^4.1.11"
-    jest-config "^20.0.4"
-    jest-haste-map "^20.0.4"
-    jest-regex-util "^20.0.3"
-    jest-resolve "^20.0.4"
-    jest-util "^20.0.3"
+    jest-config "^21.2.1"
+    jest-haste-map "^21.2.0"
+    jest-regex-util "^21.2.0"
+    jest-resolve "^21.2.0"
+    jest-util "^21.2.1"
     json-stable-stringify "^1.0.1"
     micromatch "^2.3.11"
+    slash "^1.0.0"
     strip-bom "3.0.0"
-    yargs "^7.0.2"
+    write-file-atomic "^2.1.0"
+    yargs "^9.0.0"
 
-jest-snapshot@^20.0.3:
-  version "20.0.3"
-  resolved "https://registry.yarnpkg.com/jest-snapshot/-/jest-snapshot-20.0.3.tgz#5b847e1adb1a4d90852a7f9f125086e187c76566"
+jest-snapshot@^21.2.1:
+  version "21.2.1"
+  resolved "https://registry.yarnpkg.com/jest-snapshot/-/jest-snapshot-21.2.1.tgz#29e49f16202416e47343e757e5eff948c07fd7b0"
   dependencies:
-    chalk "^1.1.3"
-    jest-diff "^20.0.3"
-    jest-matcher-utils "^20.0.3"
-    jest-util "^20.0.3"
+    chalk "^2.0.1"
+    jest-diff "^21.2.1"
+    jest-matcher-utils "^21.2.1"
+    mkdirp "^0.5.1"
     natural-compare "^1.4.0"
-    pretty-format "^20.0.3"
+    pretty-format "^21.2.1"
 
-jest-util@^20.0.3:
-  version "20.0.3"
-  resolved "https://registry.yarnpkg.com/jest-util/-/jest-util-20.0.3.tgz#0c07f7d80d82f4e5a67c6f8b9c3fe7f65cfd32ad"
+jest-util@^21.2.1:
+  version "21.2.1"
+  resolved "https://registry.yarnpkg.com/jest-util/-/jest-util-21.2.1.tgz#a274b2f726b0897494d694a6c3d6a61ab819bb78"
   dependencies:
-    chalk "^1.1.3"
+    callsites "^2.0.0"
+    chalk "^2.0.1"
     graceful-fs "^4.1.11"
-    jest-message-util "^20.0.3"
-    jest-mock "^20.0.3"
-    jest-validate "^20.0.3"
-    leven "^2.1.0"
+    jest-message-util "^21.2.1"
+    jest-mock "^21.2.0"
+    jest-validate "^21.2.1"
     mkdirp "^0.5.1"
 
-jest-validate@^20.0.3:
-  version "20.0.3"
-  resolved "https://registry.yarnpkg.com/jest-validate/-/jest-validate-20.0.3.tgz#d0cfd1de4f579f298484925c280f8f1d94ec3cab"
+jest-validate@^21.2.1:
+  version "21.2.1"
+  resolved "https://registry.yarnpkg.com/jest-validate/-/jest-validate-21.2.1.tgz#cc0cbca653cd54937ba4f2a111796774530dd3c7"
   dependencies:
-    chalk "^1.1.3"
-    jest-matcher-utils "^20.0.3"
+    chalk "^2.0.1"
+    jest-get-type "^21.2.0"
     leven "^2.1.0"
-    pretty-format "^20.0.3"
+    pretty-format "^21.2.1"
 
-jest@^20.0.4:
-  version "20.0.4"
-  resolved "https://registry.yarnpkg.com/jest/-/jest-20.0.4.tgz#3dd260c2989d6dad678b1e9cc4d91944f6d602ac"
+jest@^21.0.0:
+  version "21.2.1"
+  resolved "https://registry.yarnpkg.com/jest/-/jest-21.2.1.tgz#c964e0b47383768a1438e3ccf3c3d470327604e1"
   dependencies:
-    jest-cli "^20.0.4"
+    jest-cli "^21.2.1"
 
 js-base64@^2.1.8, js-base64@^2.1.9:
   version "2.3.2"
@@ -4238,6 +4247,10 @@ osenv@0, osenv@^0.1.4:
     os-homedir "^1.0.0"
     os-tmpdir "^1.0.0"
 
+p-cancelable@^0.3.0:
+  version "0.3.0"
+  resolved "https://registry.yarnpkg.com/p-cancelable/-/p-cancelable-0.3.0.tgz#b9e123800bcebb7ac13a479be195b507b98d30fa"
+
 p-finally@^1.0.0:
   version "1.0.0"
   resolved "https://registry.yarnpkg.com/p-finally/-/p-finally-1.0.0.tgz#3fbcfb15b899a44123b34b6dcc18b724336a2cae"
@@ -4359,7 +4372,7 @@ performance-now@^2.1.0:
   version "2.1.0"
   resolved "https://registry.yarnpkg.com/performance-now/-/performance-now-2.1.0.tgz#6309f4e0e5fa913ec1c69307ae364b4b377c9e7b"
 
-pify@^2.0.0, pify@^2.3.0:
+pify@^2.0.0:
   version "2.3.0"
   resolved "https://registry.yarnpkg.com/pify/-/pify-2.3.0.tgz#ed141a6ac043a849ea588498e7dca8b15330e90c"
 
@@ -4657,12 +4670,12 @@ prettier@^1.8.2:
   version "1.8.2"
   resolved "https://registry.yarnpkg.com/prettier/-/prettier-1.8.2.tgz#bff83e7fd573933c607875e5ba3abbdffb96aeb8"
 
-pretty-format@^20.0.3:
-  version "20.0.3"
-  resolved "https://registry.yarnpkg.com/pretty-format/-/pretty-format-20.0.3.tgz#020e350a560a1fe1a98dc3beb6ccffb386de8b14"
+pretty-format@^21.2.1:
+  version "21.2.1"
+  resolved "https://registry.yarnpkg.com/pretty-format/-/pretty-format-21.2.1.tgz#ae5407f3cf21066cd011aa1ba5fce7b6a2eddb36"
   dependencies:
-    ansi-regex "^2.1.1"
-    ansi-styles "^3.0.0"
+    ansi-regex "^3.0.0"
+    ansi-styles "^3.2.0"
 
 private@^0.1.6, private@^0.1.7:
   version "0.1.8"
@@ -5194,12 +5207,6 @@ resolve@1.1.7:
   version "1.1.7"
   resolved "https://registry.yarnpkg.com/resolve/-/resolve-1.1.7.tgz#203114d82ad2c5ed9e8e0411b3932875e889e97b"
 
-resolve@^1.3.2:
-  version "1.5.0"
-  resolved "https://registry.yarnpkg.com/resolve/-/resolve-1.5.0.tgz#1f09acce796c9a762579f31b2c1cc4c3cddf9f36"
-  dependencies:
-    path-parse "^1.0.5"
-
 restore-cursor@^2.0.0:
   version "2.0.0"
   resolved "https://registry.yarnpkg.com/restore-cursor/-/restore-cursor-2.0.0.tgz#9f7ee287f82fd326d4fd162923d62129eee0dfaf"
@@ -5246,17 +5253,19 @@ safe-buffer@5.1.1, safe-buffer@^5.0.1, safe-buffer@^5.1.0, safe-buffer@^5.1.1, s
   version "5.1.1"
   resolved "https://registry.yarnpkg.com/safe-buffer/-/safe-buffer-5.1.1.tgz#893312af69b2123def71f57889001671eeb2c853"
 
-sane@~1.6.0:
-  version "1.6.0"
-  resolved "https://registry.yarnpkg.com/sane/-/sane-1.6.0.tgz#9610c452307a135d29c1fdfe2547034180c46775"
+sane@^2.0.0:
+  version "2.2.0"
+  resolved "https://registry.yarnpkg.com/sane/-/sane-2.2.0.tgz#d6d2e2fcab00e3d283c93b912b7c3a20846f1d56"
   dependencies:
     anymatch "^1.3.0"
     exec-sh "^0.2.0"
-    fb-watchman "^1.8.0"
+    fb-watchman "^2.0.0"
     minimatch "^3.0.2"
     minimist "^1.1.1"
     walker "~1.0.5"
-    watch "~0.10.0"
+    watch "~0.18.0"
+  optionalDependencies:
+    fsevents "^1.1.1"
 
 sass-graph@^2.2.4:
   version "2.2.4"
@@ -5586,11 +5595,12 @@ strict-uri-encode@^1.0.0:
   version "1.1.0"
   resolved "https://registry.yarnpkg.com/strict-uri-encode/-/strict-uri-encode-1.1.0.tgz#279b225df1d582b1f54e65addd4352e18faa0713"
 
-string-length@^1.0.1:
-  version "1.0.1"
-  resolved "https://registry.yarnpkg.com/string-length/-/string-length-1.0.1.tgz#56970fb1c38558e9e70b728bf3de269ac45adfac"
+string-length@^2.0.0:
+  version "2.0.0"
+  resolved "https://registry.yarnpkg.com/string-length/-/string-length-2.0.0.tgz#d40dbb686a3ace960c1cffca562bf2c45f8363ed"
   dependencies:
-    strip-ansi "^3.0.0"
+    astral-regex "^1.0.0"
+    strip-ansi "^4.0.0"
 
 string-width@^1.0.1, string-width@^1.0.2:
   version "1.0.2"
@@ -5750,9 +5760,9 @@ text-table@~0.2.0:
   version "0.2.0"
   resolved "https://registry.yarnpkg.com/text-table/-/text-table-0.2.0.tgz#7f5ee823ae805207c00af2df4a84ec3fcfa570b4"
 
-throat@^3.0.0:
-  version "3.2.0"
-  resolved "https://registry.yarnpkg.com/throat/-/throat-3.2.0.tgz#50cb0670edbc40237b9e347d7e1f88e4620af836"
+throat@^4.0.0:
+  version "4.1.0"
+  resolved "https://registry.yarnpkg.com/throat/-/throat-4.1.0.tgz#89037cbc92c56ab18926e6ba4cbb200e15672a6a"
 
 through@^2.3.6:
   version "2.3.8"
@@ -5978,9 +5988,12 @@ warning@^3.0.0:
   dependencies:
     loose-envify "^1.0.0"
 
-watch@~0.10.0:
-  version "0.10.0"
-  resolved "https://registry.yarnpkg.com/watch/-/watch-0.10.0.tgz#77798b2da0f9910d595f1ace5b0c2258521f21dc"
+watch@~0.18.0:
+  version "0.18.0"
+  resolved "https://registry.yarnpkg.com/watch/-/watch-0.18.0.tgz#28095476c6df7c90c963138990c0a5423eb4b986"
+  dependencies:
+    exec-sh "^0.2.0"
+    minimist "^1.2.0"
 
 watchpack@^1.4.0:
   version "1.4.0"
@@ -6166,6 +6179,14 @@ wrappy@1:
   version "1.0.2"
   resolved "https://registry.yarnpkg.com/wrappy/-/wrappy-1.0.2.tgz#b5243d8f3ec1aa35f1364605bc0d1036e30ab69f"
 
+write-file-atomic@^2.1.0:
+  version "2.3.0"
+  resolved "https://registry.yarnpkg.com/write-file-atomic/-/write-file-atomic-2.3.0.tgz#1ff61575c2e2a4e8e510d6fa4e243cce183999ab"
+  dependencies:
+    graceful-fs "^4.1.11"
+    imurmurhash "^0.1.4"
+    signal-exit "^3.0.2"
+
 write@^0.2.1:
   version "0.2.1"
   resolved "https://registry.yarnpkg.com/write/-/write-0.2.1.tgz#5fc03828e264cea3fe91455476f7a3c566cb0757"
@@ -6224,7 +6245,7 @@ yargs@^6.6.0:
     y18n "^3.2.1"
     yargs-parser "^4.2.0"
 
-yargs@^7.0.0, yargs@^7.0.2:
+yargs@^7.0.0:
   version "7.1.0"
   resolved "https://registry.yarnpkg.com/yargs/-/yargs-7.1.0.tgz#6ba318eb16961727f5d284f8ea003e8d6154d0c8"
   dependencies:
@@ -6260,6 +6281,24 @@ yargs@^8.0.2:
     y18n "^3.2.1"
     yargs-parser "^7.0.0"
 
+yargs@^9.0.0:
+  version "9.0.1"
+  resolved "https://registry.yarnpkg.com/yargs/-/yargs-9.0.1.tgz#52acc23feecac34042078ee78c0c007f5085db4c"
+  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@~3.10.0:
   version "3.10.0"
   resolved "https://registry.yarnpkg.com/yargs/-/yargs-3.10.0.tgz#f7ee7bd857dd7c1d2d38c0e74efbd681d1431fd1"