diff --git a/package.json b/package.json
index 4b97fef..99e495a 100644
--- a/package.json
+++ b/package.json
@@ -46,7 +46,7 @@
   "devDependencies": {
     "babel-cli": "6.26.0",
     "babel-core": "6.26.0",
-    "babel-eslint": "7.2.3",
+    "babel-eslint": "8.2.2",
     "babel-jest": "20.0.3",
     "babel-preset-latest": "6.24.1",
     "babel-preset-stage-0": "6.24.1",
diff --git a/yarn.lock b/yarn.lock
index 07dd8ec..ed707c2 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -2,6 +2,75 @@
 # yarn lockfile v1
 
 
+"@babel/code-frame@7.0.0-beta.40", "@babel/code-frame@^7.0.0-beta.40":
+  version "7.0.0-beta.40"
+  resolved "https://registry.yarnpkg.com/@babel/code-frame/-/code-frame-7.0.0-beta.40.tgz#37e2b0cf7c56026b4b21d3927cadf81adec32ac6"
+  dependencies:
+    "@babel/highlight" "7.0.0-beta.40"
+
+"@babel/generator@7.0.0-beta.40":
+  version "7.0.0-beta.40"
+  resolved "https://registry.yarnpkg.com/@babel/generator/-/generator-7.0.0-beta.40.tgz#ab61f9556f4f71dbd1138949c795bb9a21e302ea"
+  dependencies:
+    "@babel/types" "7.0.0-beta.40"
+    jsesc "^2.5.1"
+    lodash "^4.2.0"
+    source-map "^0.5.0"
+    trim-right "^1.0.1"
+
+"@babel/helper-function-name@7.0.0-beta.40":
+  version "7.0.0-beta.40"
+  resolved "https://registry.yarnpkg.com/@babel/helper-function-name/-/helper-function-name-7.0.0-beta.40.tgz#9d033341ab16517f40d43a73f2d81fc431ccd7b6"
+  dependencies:
+    "@babel/helper-get-function-arity" "7.0.0-beta.40"
+    "@babel/template" "7.0.0-beta.40"
+    "@babel/types" "7.0.0-beta.40"
+
+"@babel/helper-get-function-arity@7.0.0-beta.40":
+  version "7.0.0-beta.40"
+  resolved "https://registry.yarnpkg.com/@babel/helper-get-function-arity/-/helper-get-function-arity-7.0.0-beta.40.tgz#ac0419cf067b0ec16453e1274f03878195791c6e"
+  dependencies:
+    "@babel/types" "7.0.0-beta.40"
+
+"@babel/highlight@7.0.0-beta.40":
+  version "7.0.0-beta.40"
+  resolved "https://registry.yarnpkg.com/@babel/highlight/-/highlight-7.0.0-beta.40.tgz#b43d67d76bf46e1d10d227f68cddcd263786b255"
+  dependencies:
+    chalk "^2.0.0"
+    esutils "^2.0.2"
+    js-tokens "^3.0.0"
+
+"@babel/template@7.0.0-beta.40":
+  version "7.0.0-beta.40"
+  resolved "https://registry.yarnpkg.com/@babel/template/-/template-7.0.0-beta.40.tgz#034988c6424eb5c3268fe6a608626de1f4410fc8"
+  dependencies:
+    "@babel/code-frame" "7.0.0-beta.40"
+    "@babel/types" "7.0.0-beta.40"
+    babylon "7.0.0-beta.40"
+    lodash "^4.2.0"
+
+"@babel/traverse@^7.0.0-beta.40":
+  version "7.0.0-beta.40"
+  resolved "https://registry.yarnpkg.com/@babel/traverse/-/traverse-7.0.0-beta.40.tgz#d140e449b2e093ef9fe1a2eecc28421ffb4e521e"
+  dependencies:
+    "@babel/code-frame" "7.0.0-beta.40"
+    "@babel/generator" "7.0.0-beta.40"
+    "@babel/helper-function-name" "7.0.0-beta.40"
+    "@babel/types" "7.0.0-beta.40"
+    babylon "7.0.0-beta.40"
+    debug "^3.0.1"
+    globals "^11.1.0"
+    invariant "^2.2.0"
+    lodash "^4.2.0"
+
+"@babel/types@7.0.0-beta.40", "@babel/types@^7.0.0-beta.40":
+  version "7.0.0-beta.40"
+  resolved "https://registry.yarnpkg.com/@babel/types/-/types-7.0.0-beta.40.tgz#25c3d7aae14126abe05fcb098c65a66b6d6b8c14"
+  dependencies:
+    esutils "^2.0.2"
+    lodash "^4.2.0"
+    to-fast-properties "^2.0.0"
+
 abab@^1.0.3:
   version "1.0.3"
   resolved "https://registry.yarnpkg.com/abab/-/abab-1.0.3.tgz#b81de5f7274ec4e756d797cd834f303642724e5d"
@@ -73,7 +142,7 @@ 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@^3.0.0, ansi-styles@^3.2.0:
   version "3.2.0"
   resolved "https://registry.yarnpkg.com/ansi-styles/-/ansi-styles-3.2.0.tgz#c159b8d5be0f9e5a6f346dab94f16ce022161b88"
   dependencies:
@@ -211,7 +280,7 @@ babel-cli@6.26.0:
   optionalDependencies:
     chokidar "^1.6.1"
 
-babel-code-frame@^6.16.0, babel-code-frame@^6.22.0, babel-code-frame@^6.26.0:
+babel-code-frame@^6.16.0, babel-code-frame@^6.26.0:
   version "6.26.0"
   resolved "https://registry.yarnpkg.com/babel-code-frame/-/babel-code-frame-6.26.0.tgz#63fd43f7dc1e3bb7ce35947db8fe369a3f58c74b"
   dependencies:
@@ -243,14 +312,16 @@ babel-core@6, babel-core@6.26.0, babel-core@^6.0.0, babel-core@^6.26.0:
     slash "^1.0.0"
     source-map "^0.5.6"
 
-babel-eslint@7.2.3:
-  version "7.2.3"
-  resolved "https://registry.yarnpkg.com/babel-eslint/-/babel-eslint-7.2.3.tgz#b2fe2d80126470f5c19442dc757253a897710827"
+babel-eslint@8.2.2:
+  version "8.2.2"
+  resolved "https://registry.yarnpkg.com/babel-eslint/-/babel-eslint-8.2.2.tgz#1102273354c6f0b29b4ea28a65f97d122296b68b"
   dependencies:
-    babel-code-frame "^6.22.0"
-    babel-traverse "^6.23.1"
-    babel-types "^6.23.0"
-    babylon "^6.17.0"
+    "@babel/code-frame" "^7.0.0-beta.40"
+    "@babel/traverse" "^7.0.0-beta.40"
+    "@babel/types" "^7.0.0-beta.40"
+    babylon "^7.0.0-beta.40"
+    eslint-scope "~3.7.1"
+    eslint-visitor-keys "^1.0.0"
 
 babel-generator@^6.18.0, babel-generator@^6.26.0:
   version "6.26.0"
@@ -851,7 +922,7 @@ babel-template@^6.16.0, babel-template@^6.24.1, babel-template@^6.26.0:
     babylon "^6.18.0"
     lodash "^4.17.4"
 
-babel-traverse@^6.18.0, babel-traverse@^6.23.1, babel-traverse@^6.24.1, babel-traverse@^6.26.0:
+babel-traverse@^6.18.0, babel-traverse@^6.24.1, babel-traverse@^6.26.0:
   version "6.26.0"
   resolved "https://registry.yarnpkg.com/babel-traverse/-/babel-traverse-6.26.0.tgz#46a9cbd7edcc62c8e5c064e2d2d8d0f4035766ee"
   dependencies:
@@ -865,7 +936,7 @@ babel-traverse@^6.18.0, babel-traverse@^6.23.1, babel-traverse@^6.24.1, babel-tr
     invariant "^2.2.2"
     lodash "^4.17.4"
 
-babel-types@^6.18.0, babel-types@^6.19.0, babel-types@^6.23.0, babel-types@^6.24.1, babel-types@^6.26.0:
+babel-types@^6.18.0, babel-types@^6.19.0, babel-types@^6.24.1, babel-types@^6.26.0:
   version "6.26.0"
   resolved "https://registry.yarnpkg.com/babel-types/-/babel-types-6.26.0.tgz#a3b073f94ab49eb6fa55cd65227a334380632497"
   dependencies:
@@ -874,7 +945,11 @@ babel-types@^6.18.0, babel-types@^6.19.0, babel-types@^6.23.0, babel-types@^6.24
     lodash "^4.17.4"
     to-fast-properties "^1.0.3"
 
-babylon@^6.17.0, babylon@^6.17.4, babylon@^6.18.0:
+babylon@7.0.0-beta.40, babylon@^7.0.0-beta.40:
+  version "7.0.0-beta.40"
+  resolved "https://registry.yarnpkg.com/babylon/-/babylon-7.0.0-beta.40.tgz#91fc8cd56d5eb98b28e6fde41045f2957779940a"
+
+babylon@^6.17.4, babylon@^6.18.0:
   version "6.18.0"
   resolved "https://registry.yarnpkg.com/babylon/-/babylon-6.18.0.tgz#af2f3b88fa6f5c1e4c634d1a0f8eac4f55b395e3"
 
@@ -988,6 +1063,14 @@ chalk@^1.0.0, chalk@^1.1.1, chalk@^1.1.3:
     strip-ansi "^3.0.0"
     supports-color "^2.0.0"
 
+chalk@^2.0.0:
+  version "2.3.1"
+  resolved "https://registry.yarnpkg.com/chalk/-/chalk-2.3.1.tgz#523fe2678aec7b04e8041909292fe8b17059b796"
+  dependencies:
+    ansi-styles "^3.2.0"
+    escape-string-regexp "^1.0.5"
+    supports-color "^5.2.0"
+
 chokidar@^1.6.1:
   version "1.7.0"
   resolved "https://registry.yarnpkg.com/chokidar/-/chokidar-1.7.0.tgz#798e689778151c8076b4b360e5edd28cda2bb468"
@@ -1172,6 +1255,12 @@ debug@^2.1.1, debug@^2.2.0, debug@^2.6.3, debug@^2.6.8:
   dependencies:
     ms "2.0.0"
 
+debug@^3.0.1:
+  version "3.1.0"
+  resolved "https://registry.yarnpkg.com/debug/-/debug-3.1.0.tgz#5bb5a0672628b64149566ba16819e61518c67261"
+  dependencies:
+    ms "2.0.0"
+
 decamelize@^1.0.0, decamelize@^1.1.1:
   version "1.2.0"
   resolved "https://registry.yarnpkg.com/decamelize/-/decamelize-1.2.0.tgz#f6534d15148269b20352e7bee26f501f9a191290"
@@ -1441,6 +1530,17 @@ eslint-plugin-standard@~3.0.1:
   version "3.0.1"
   resolved "https://registry.yarnpkg.com/eslint-plugin-standard/-/eslint-plugin-standard-3.0.1.tgz#34d0c915b45edc6f010393c7eef3823b08565cf2"
 
+eslint-scope@~3.7.1:
+  version "3.7.1"
+  resolved "https://registry.yarnpkg.com/eslint-scope/-/eslint-scope-3.7.1.tgz#3d63c3edfda02e06e01a452ad88caacc7cdcb6e8"
+  dependencies:
+    esrecurse "^4.1.0"
+    estraverse "^4.1.1"
+
+eslint-visitor-keys@^1.0.0:
+  version "1.0.0"
+  resolved "https://registry.yarnpkg.com/eslint-visitor-keys/-/eslint-visitor-keys-1.0.0.tgz#3f3180fb2e291017716acb4c9d6d5b5c34a6a81d"
+
 eslint@~3.19.0:
   version "3.19.0"
   resolved "https://registry.yarnpkg.com/eslint/-/eslint-3.19.0.tgz#c8fc6201c7f40dd08941b87c085767386a679acc"
@@ -1768,6 +1868,10 @@ glob@^7.0.0, 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"
 
+globals@^11.1.0:
+  version "11.3.0"
+  resolved "https://registry.yarnpkg.com/globals/-/globals-11.3.0.tgz#e04fdb7b9796d8adac9c8f64c14837b2313378b0"
+
 globals@^9.14.0, globals@^9.18.0:
   version "9.18.0"
   resolved "https://registry.yarnpkg.com/globals/-/globals-9.18.0.tgz#aa3896b3e69b487f17e31ed2143d69a8e30c2d8a"
@@ -1845,6 +1949,10 @@ has-flag@^1.0.0:
   version "1.0.0"
   resolved "https://registry.yarnpkg.com/has-flag/-/has-flag-1.0.0.tgz#9d9e793165ce017a00f00418c43f942a7b1d11fa"
 
+has-flag@^3.0.0:
+  version "3.0.0"
+  resolved "https://registry.yarnpkg.com/has-flag/-/has-flag-3.0.0.tgz#b5d454dc2199ae225699f3467e5a07f3b955bafd"
+
 has-unicode@^2.0.0:
   version "2.0.1"
   resolved "https://registry.yarnpkg.com/has-unicode/-/has-unicode-2.0.1.tgz#e0e6fe6a28cf51138855e086d1691e771de2a8b9"
@@ -1942,6 +2050,12 @@ interpret@^1.0.0:
   version "1.0.3"
   resolved "https://registry.yarnpkg.com/interpret/-/interpret-1.0.3.tgz#cbc35c62eeee73f19ab7b10a801511401afc0f90"
 
+invariant@^2.2.0:
+  version "2.2.3"
+  resolved "https://registry.yarnpkg.com/invariant/-/invariant-2.2.3.tgz#1a827dfde7dcbd7c323f0ca826be8fa7c5e9d688"
+  dependencies:
+    loose-envify "^1.0.0"
+
 invariant@^2.2.2:
   version "2.2.2"
   resolved "https://registry.yarnpkg.com/invariant/-/invariant-2.2.2.tgz#9e1f56ac0acdb6bf303306f338be3b204ae60360"
@@ -2441,6 +2555,10 @@ jsesc@^1.3.0:
   version "1.3.0"
   resolved "https://registry.yarnpkg.com/jsesc/-/jsesc-1.3.0.tgz#46c3fec8c1892b12b0833db9bc7622176dbab34b"
 
+jsesc@^2.5.1:
+  version "2.5.1"
+  resolved "https://registry.yarnpkg.com/jsesc/-/jsesc-2.5.1.tgz#e421a2a8e20d6b0819df28908f782526b96dd1fe"
+
 jsesc@~0.5.0:
   version "0.5.0"
   resolved "https://registry.yarnpkg.com/jsesc/-/jsesc-0.5.0.tgz#e7dee66e35d6fc16f710fe91d5cf69f70f08911d"
@@ -2555,6 +2673,10 @@ lodash@^4.0.0, lodash@^4.14.0, lodash@^4.17.4, lodash@^4.3.0:
   version "4.17.4"
   resolved "https://registry.yarnpkg.com/lodash/-/lodash-4.17.4.tgz#78203a4d1c328ae1d86dca6460e369b57f4055ae"
 
+lodash@^4.2.0:
+  version "4.17.5"
+  resolved "https://registry.yarnpkg.com/lodash/-/lodash-4.17.5.tgz#99a92d65c0272debe8c96b6057bc8fbfa3bed511"
+
 log-driver@1.2.5:
   version "1.2.5"
   resolved "https://registry.yarnpkg.com/log-driver/-/log-driver-1.2.5.tgz#7ae4ec257302fd790d557cb10c97100d857b0056"
@@ -3311,7 +3433,7 @@ source-map@^0.4.4:
   dependencies:
     amdefine ">=0.0.4"
 
-source-map@^0.5.3, source-map@^0.5.6, source-map@~0.5.1:
+source-map@^0.5.0, source-map@^0.5.3, source-map@^0.5.6, source-map@~0.5.1:
   version "0.5.7"
   resolved "https://registry.yarnpkg.com/source-map/-/source-map-0.5.7.tgz#8a039d2d1021d22d1ea14c80d8ea468ba2ef3fcc"
 
@@ -3443,6 +3565,12 @@ supports-color@^3.1.2:
   dependencies:
     has-flag "^1.0.0"
 
+supports-color@^5.2.0:
+  version "5.2.0"
+  resolved "https://registry.yarnpkg.com/supports-color/-/supports-color-5.2.0.tgz#b0d5333b1184dd3666cbe5aa0b45c5ac7ac17a4a"
+  dependencies:
+    has-flag "^3.0.0"
+
 symbol-tree@^3.2.1:
   version "3.2.2"
   resolved "https://registry.yarnpkg.com/symbol-tree/-/symbol-tree-3.2.2.tgz#ae27db38f660a7ae2e1c3b7d1bc290819b8519e6"
@@ -3509,6 +3637,10 @@ 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"
 
+to-fast-properties@^2.0.0:
+  version "2.0.0"
+  resolved "https://registry.yarnpkg.com/to-fast-properties/-/to-fast-properties-2.0.0.tgz#dc5e698cbd079265bc73e0377681a4e4e83f616e"
+
 tough-cookie@^2.3.2, tough-cookie@~2.3.0:
   version "2.3.2"
   resolved "https://registry.yarnpkg.com/tough-cookie/-/tough-cookie-2.3.2.tgz#f081f76e4c85720e6c37a5faced737150d84072a"