diff --git a/package.json b/package.json
index 5ad1913..42c1124 100644
--- a/package.json
+++ b/package.json
@@ -102,7 +102,7 @@
     "rollup": "^0.43.0",
     "rollup-plugin-node-resolve": "^3.0.0",
     "semantic-release": "^6.3.6",
-    "ts-jest": "^20.0.4",
+    "ts-jest": "^21.0.0",
     "ts-node": "^3.0.0",
     "tslint": "^5.0.0",
     "tslint-config-standard": "^6.0.0",
diff --git a/yarn.lock b/yarn.lock
index 1f6efd7..a62eab0 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -35,37 +35,6 @@
     conventional-changelog "0.0.17"
     github-url-from-git "^1.4.0"
 
-"@types/babel-core@^6.7.14":
-  version "6.7.14"
-  resolved "https://registry.yarnpkg.com/@types/babel-core/-/babel-core-6.7.14.tgz#a08c900a98e8987c1a98d2ea4fa0a1805a7d131f"
-  dependencies:
-    "@types/babel-template" "*"
-    "@types/babel-traverse" "*"
-    "@types/babel-types" "*"
-
-"@types/babel-template@*":
-  version "6.7.14"
-  resolved "https://registry.yarnpkg.com/@types/babel-template/-/babel-template-6.7.14.tgz#8088a56f9d697d620d3d079c3ef66025b7a08d02"
-  dependencies:
-    "@types/babel-types" "*"
-    "@types/babylon" "*"
-
-"@types/babel-traverse@*":
-  version "6.7.17"
-  resolved "https://registry.yarnpkg.com/@types/babel-traverse/-/babel-traverse-6.7.17.tgz#5212a4edced81f53a6c4fb1fd7a34aa4ff6cf36b"
-  dependencies:
-    "@types/babel-types" "*"
-
-"@types/babel-types@*":
-  version "6.7.16"
-  resolved "https://registry.yarnpkg.com/@types/babel-types/-/babel-types-6.7.16.tgz#e2602896636858a0067971f7ca4bb8678038293f"
-
-"@types/babylon@*":
-  version "6.16.1"
-  resolved "https://registry.yarnpkg.com/@types/babylon/-/babylon-6.16.1.tgz#e4d10ab9e43a73703a17c6f41438bede28769340"
-  dependencies:
-    "@types/babel-types" "*"
-
 "@types/fs-extra@^3.0.0":
   version "3.0.3"
   resolved "https://registry.yarnpkg.com/@types/fs-extra/-/fs-extra-3.0.3.tgz#1d66eb670ebf657e57c0fda014df340c19d8aa0c"
@@ -151,16 +120,26 @@ ansi-regex@^2.0.0, ansi-regex@^2.1.1:
   version "2.1.1"
   resolved "https://registry.yarnpkg.com/ansi-regex/-/ansi-regex-2.1.1.tgz#c3b33ab5ee360d86e0e628f0468ae7ef27d654df"
 
+ansi-regex@^3.0.0:
+  version "3.0.0"
+  resolved "https://registry.yarnpkg.com/ansi-regex/-/ansi-regex-3.0.0.tgz#ed0317c322064f79466c02966bddb605ab37d998"
+
 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@^3.1.0:
   version "3.1.0"
   resolved "https://registry.yarnpkg.com/ansi-styles/-/ansi-styles-3.1.0.tgz#09c202d5c917ec23188caa5c9cb9179cd9547750"
   dependencies:
     color-convert "^1.0.0"
 
+ansi-styles@^3.2.0:
+  version "3.2.0"
+  resolved "https://registry.yarnpkg.com/ansi-styles/-/ansi-styles-3.2.0.tgz#c159b8d5be0f9e5a6f346dab94f16ce022161b88"
+  dependencies:
+    color-convert "^1.9.0"
+
 ansi@^0.3.0, ansi@~0.3.0:
   version "0.3.1"
   resolved "https://registry.yarnpkg.com/ansi/-/ansi-0.3.1.tgz#0c42d4fb17160d5a9af1e484bace1c66922c1b21"
@@ -352,6 +331,10 @@ 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@^21.0.0:
+  version "21.0.0"
+  resolved "https://registry.yarnpkg.com/babel-plugin-jest-hoist/-/babel-plugin-jest-hoist-21.0.0.tgz#aa2dbab7b0d58fa635640efd53aab730be7b3273"
+
 babel-plugin-transform-es2015-modules-commonjs@^6.24.1:
   version "6.24.1"
   resolved "https://registry.yarnpkg.com/babel-plugin-transform-es2015-modules-commonjs/-/babel-plugin-transform-es2015-modules-commonjs-6.24.1.tgz#d3e310b40ef664a36622200097c6d440298f2bfe"
@@ -382,6 +365,12 @@ babel-preset-jest@^20.0.3:
   dependencies:
     babel-plugin-jest-hoist "^20.0.3"
 
+babel-preset-jest@^21.0.0:
+  version "21.0.0"
+  resolved "https://registry.yarnpkg.com/babel-preset-jest/-/babel-preset-jest-21.0.0.tgz#13a8d82e999aa49f8b2dc14d0023d362f2e4ba23"
+  dependencies:
+    babel-plugin-jest-hoist "^21.0.0"
+
 babel-register@^6.24.1:
   version "6.24.1"
   resolved "https://registry.yarnpkg.com/babel-register/-/babel-register-6.24.1.tgz#7e10e13a2f71065bdfad5a1787ba45bca6ded75f"
@@ -555,6 +544,14 @@ chalk@1.1.3, chalk@^1.0.0, chalk@^1.1.0, chalk@^1.1.1, chalk@^1.1.3:
     strip-ansi "^3.0.0"
     supports-color "^2.0.0"
 
+chalk@^2.0.1:
+  version "2.1.0"
+  resolved "https://registry.yarnpkg.com/chalk/-/chalk-2.1.0.tgz#ac5becf14fa21b99c6c92ca7a7d7cfd5b17e743e"
+  dependencies:
+    ansi-styles "^3.1.0"
+    escape-string-regexp "^1.0.5"
+    supports-color "^4.0.0"
+
 ci-info@^1.0.0:
   version "1.0.0"
   resolved "https://registry.yarnpkg.com/ci-info/-/ci-info-1.0.0.tgz#dc5285f2b4e251821683681c381c3388f46ec534"
@@ -589,7 +586,7 @@ code-point-at@^1.0.0:
   version "1.1.0"
   resolved "https://registry.yarnpkg.com/code-point-at/-/code-point-at-1.1.0.tgz#0d070b4d043a5bea33a2f1a40e2edb3d9a4ccf77"
 
-color-convert@^1.0.0:
+color-convert@^1.0.0, color-convert@^1.9.0:
   version "1.9.0"
   resolved "https://registry.yarnpkg.com/color-convert/-/color-convert-1.9.0.tgz#1accf97dd739b983bf994d56fec8f95853641b7a"
   dependencies:
@@ -953,6 +950,17 @@ expand-tilde@^1.2.2:
   dependencies:
     os-homedir "^1.0.1"
 
+expect@^21.0.0:
+  version "21.0.0"
+  resolved "https://registry.yarnpkg.com/expect/-/expect-21.0.0.tgz#55fbb07e989479863663975ae8e9ec51753c99ca"
+  dependencies:
+    ansi-styles "^3.2.0"
+    jest-diff "^21.0.0"
+    jest-get-type "^21.0.0"
+    jest-matcher-utils "^21.0.0"
+    jest-message-util "^21.0.0"
+    jest-regex-util "^21.0.0"
+
 extend@3, extend@^3.0.0, extend@~3.0.0:
   version "3.0.1"
   resolved "https://registry.yarnpkg.com/extend/-/extend-3.0.1.tgz#a755ea7bc1adfcc5a31ce7e762dbaadc5e636444"
@@ -1132,6 +1140,14 @@ fs-extra@^3.0.0:
     jsonfile "^3.0.0"
     universalify "^0.1.0"
 
+fs-extra@^4.0.0:
+  version "4.0.1"
+  resolved "https://registry.yarnpkg.com/fs-extra/-/fs-extra-4.0.1.tgz#7fc0c6c8957f983f57f306a24e5b9ddd8d0dd880"
+  dependencies:
+    graceful-fs "^4.1.2"
+    jsonfile "^3.0.0"
+    universalify "^0.1.0"
+
 fs.realpath@^1.0.0:
   version "1.0.0"
   resolved "https://registry.yarnpkg.com/fs.realpath/-/fs.realpath-1.0.0.tgz#1504ad2523158caa40db4a2787cb01411994ea4f"
@@ -1238,7 +1254,7 @@ glob-parent@^2.0.0:
   dependencies:
     is-glob "^2.0.0"
 
-glob@7.1.1:
+glob@7.1.1, glob@^7.0.0, glob@^7.0.3, glob@^7.0.5, glob@^7.1.1:
   version "7.1.1"
   resolved "https://registry.yarnpkg.com/glob/-/glob-7.1.1.tgz#805211df04faaf1c63a3600306cdf5ade50b2ec8"
   dependencies:
@@ -1249,17 +1265,6 @@ glob@7.1.1:
     once "^1.3.0"
     path-is-absolute "^1.0.0"
 
-glob@^7.0.0, glob@^7.0.3, glob@^7.0.5, glob@^7.1.1:
-  version "7.1.2"
-  resolved "https://registry.yarnpkg.com/glob/-/glob-7.1.2.tgz#c19c9df9a028702d678612384a6552404c636d15"
-  dependencies:
-    fs.realpath "^1.0.0"
-    inflight "^1.0.4"
-    inherits "2"
-    minimatch "^3.0.4"
-    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"
@@ -1335,6 +1340,10 @@ 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@^2.0.0:
+  version "2.0.0"
+  resolved "https://registry.yarnpkg.com/has-flag/-/has-flag-2.0.0.tgz#e8207af1cc7b30d446cc70b734b5e8be18f88d51"
+
 has-unicode@^2.0.0:
   version "2.0.1"
   resolved "https://registry.yarnpkg.com/has-unicode/-/has-unicode-2.0.1.tgz#e0e6fe6a28cf51138855e086d1691e771de2a8b9"
@@ -1707,7 +1716,7 @@ jest-cli@^20.0.4:
     worker-farm "^1.3.1"
     yargs "^7.0.2"
 
-jest-config@^20.0.0, jest-config@^20.0.4:
+jest-config@^20.0.4:
   version "20.0.4"
   resolved "https://registry.yarnpkg.com/jest-config/-/jest-config-20.0.4.tgz#e37930ab2217c913605eff13e7bd763ec48faeea"
   dependencies:
@@ -1722,6 +1731,22 @@ jest-config@^20.0.0, jest-config@^20.0.4:
     jest-validate "^20.0.3"
     pretty-format "^20.0.3"
 
+jest-config@^21.0.0:
+  version "21.0.0"
+  resolved "https://registry.yarnpkg.com/jest-config/-/jest-config-21.0.0.tgz#81dcb20d15971f31bf44a82c6fe85b4423d98d95"
+  dependencies:
+    chalk "^2.0.1"
+    glob "^7.1.1"
+    jest-environment-jsdom "^21.0.0"
+    jest-environment-node "^21.0.0"
+    jest-get-type "^21.0.0"
+    jest-jasmine2 "^21.0.0"
+    jest-regex-util "^21.0.0"
+    jest-resolve "^21.0.0"
+    jest-util "^21.0.0"
+    jest-validate "^21.0.0"
+    pretty-format "^21.0.0"
+
 jest-diff@^20.0.3:
   version "20.0.3"
   resolved "https://registry.yarnpkg.com/jest-diff/-/jest-diff-20.0.3.tgz#81f288fd9e675f0fb23c75f1c2b19445fe586617"
@@ -1731,6 +1756,15 @@ jest-diff@^20.0.3:
     jest-matcher-utils "^20.0.3"
     pretty-format "^20.0.3"
 
+jest-diff@^21.0.0:
+  version "21.0.0"
+  resolved "https://registry.yarnpkg.com/jest-diff/-/jest-diff-21.0.0.tgz#b996ba2963a783125e6bc59fd5623bce67df7f17"
+  dependencies:
+    chalk "^2.0.1"
+    diff "^3.2.0"
+    jest-get-type "^21.0.0"
+    pretty-format "^21.0.0"
+
 jest-docblock@^20.0.3:
   version "20.0.3"
   resolved "https://registry.yarnpkg.com/jest-docblock/-/jest-docblock-20.0.3.tgz#17bea984342cc33d83c50fbe1545ea0efaa44712"
@@ -1743,6 +1777,14 @@ jest-environment-jsdom@^20.0.3:
     jest-util "^20.0.3"
     jsdom "^9.12.0"
 
+jest-environment-jsdom@^21.0.0:
+  version "21.0.0"
+  resolved "https://registry.yarnpkg.com/jest-environment-jsdom/-/jest-environment-jsdom-21.0.0.tgz#1d53e34b1656254b8c539700e35360d8f8ebb579"
+  dependencies:
+    jest-mock "^21.0.0"
+    jest-util "^21.0.0"
+    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"
@@ -1750,6 +1792,17 @@ jest-environment-node@^20.0.3:
     jest-mock "^20.0.3"
     jest-util "^20.0.3"
 
+jest-environment-node@^21.0.0:
+  version "21.0.0"
+  resolved "https://registry.yarnpkg.com/jest-environment-node/-/jest-environment-node-21.0.0.tgz#ffc781b82569f3f4bc2d8fb8f1ea7373cb11f043"
+  dependencies:
+    jest-mock "^21.0.0"
+    jest-util "^21.0.0"
+
+jest-get-type@^21.0.0:
+  version "21.0.0"
+  resolved "https://registry.yarnpkg.com/jest-get-type/-/jest-get-type-21.0.0.tgz#ed8667533c0a24a4feebbf492661f23abac3620b"
+
 jest-haste-map@^20.0.4:
   version "20.0.4"
   resolved "https://registry.yarnpkg.com/jest-haste-map/-/jest-haste-map-20.0.4.tgz#653eb55c889ce3c021f7b94693f20a4159badf03"
@@ -1775,6 +1828,19 @@ jest-jasmine2@^20.0.4:
     once "^1.4.0"
     p-map "^1.1.1"
 
+jest-jasmine2@^21.0.0:
+  version "21.0.0"
+  resolved "https://registry.yarnpkg.com/jest-jasmine2/-/jest-jasmine2-21.0.0.tgz#539725989e45ab0b00029fcf37bc679aa39c2941"
+  dependencies:
+    chalk "^2.0.1"
+    expect "^21.0.0"
+    graceful-fs "^4.1.11"
+    jest-diff "^21.0.0"
+    jest-matcher-utils "^21.0.0"
+    jest-message-util "^21.0.0"
+    jest-snapshot "^21.0.0"
+    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"
@@ -1782,6 +1848,14 @@ jest-matcher-utils@^20.0.3:
     chalk "^1.1.3"
     pretty-format "^20.0.3"
 
+jest-matcher-utils@^21.0.0:
+  version "21.0.0"
+  resolved "https://registry.yarnpkg.com/jest-matcher-utils/-/jest-matcher-utils-21.0.0.tgz#493dc25b9ed6a23a61802ca20656f0f1c16f15b1"
+  dependencies:
+    chalk "^2.0.1"
+    jest-get-type "^21.0.0"
+    pretty-format "^21.0.0"
+
 jest-matchers@^20.0.3:
   version "20.0.3"
   resolved "https://registry.yarnpkg.com/jest-matchers/-/jest-matchers-20.0.3.tgz#ca69db1c32db5a6f707fa5e0401abb55700dfd60"
@@ -1799,14 +1873,30 @@ jest-message-util@^20.0.3:
     micromatch "^2.3.11"
     slash "^1.0.0"
 
+jest-message-util@^21.0.0:
+  version "21.0.0"
+  resolved "https://registry.yarnpkg.com/jest-message-util/-/jest-message-util-21.0.0.tgz#cd49c2e91d7a227e622884c418185a1a7cbe1fd6"
+  dependencies:
+    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@^21.0.0:
+  version "21.0.0"
+  resolved "https://registry.yarnpkg.com/jest-mock/-/jest-mock-21.0.0.tgz#948fdbb44ef702ca998e078ca62b4968780e102e"
+
 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@^21.0.0:
+  version "21.0.0"
+  resolved "https://registry.yarnpkg.com/jest-regex-util/-/jest-regex-util-21.0.0.tgz#f13c382a1c55515c20471390ab38e5d71cbd320e"
+
 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"
@@ -1821,6 +1911,14 @@ jest-resolve@^20.0.4:
     is-builtin-module "^1.0.0"
     resolve "^1.3.2"
 
+jest-resolve@^21.0.0:
+  version "21.0.0"
+  resolved "https://registry.yarnpkg.com/jest-resolve/-/jest-resolve-21.0.0.tgz#04d3939203633cc57ae8219b34ad42687dd8d111"
+  dependencies:
+    browser-resolve "^1.11.2"
+    chalk "^2.0.1"
+    is-builtin-module "^1.0.0"
+
 jest-runtime@^20.0.4:
   version "20.0.4"
   resolved "https://registry.yarnpkg.com/jest-runtime/-/jest-runtime-20.0.4.tgz#a2c802219c4203f754df1404e490186169d124d8"
@@ -1852,7 +1950,18 @@ jest-snapshot@^20.0.3:
     natural-compare "^1.4.0"
     pretty-format "^20.0.3"
 
-jest-util@^20.0.0, jest-util@^20.0.3:
+jest-snapshot@^21.0.0:
+  version "21.0.0"
+  resolved "https://registry.yarnpkg.com/jest-snapshot/-/jest-snapshot-21.0.0.tgz#00b582b13ef42112bd431b498e37f7829b30cd66"
+  dependencies:
+    chalk "^2.0.1"
+    jest-diff "^21.0.0"
+    jest-matcher-utils "^21.0.0"
+    mkdirp "^0.5.1"
+    natural-compare "^1.4.0"
+    pretty-format "^21.0.0"
+
+jest-util@^20.0.3:
   version "20.0.3"
   resolved "https://registry.yarnpkg.com/jest-util/-/jest-util-20.0.3.tgz#0c07f7d80d82f4e5a67c6f8b9c3fe7f65cfd32ad"
   dependencies:
@@ -1864,6 +1973,18 @@ jest-util@^20.0.0, jest-util@^20.0.3:
     leven "^2.1.0"
     mkdirp "^0.5.1"
 
+jest-util@^21.0.0:
+  version "21.0.0"
+  resolved "https://registry.yarnpkg.com/jest-util/-/jest-util-21.0.0.tgz#62b3a3ec3ff91022ef7e1ffbcf3293424715919f"
+  dependencies:
+    callsites "^2.0.0"
+    chalk "^2.0.1"
+    graceful-fs "^4.1.11"
+    jest-message-util "^21.0.0"
+    jest-mock "^21.0.0"
+    jest-validate "^21.0.0"
+    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"
@@ -1873,6 +1994,15 @@ jest-validate@^20.0.3:
     leven "^2.1.0"
     pretty-format "^20.0.3"
 
+jest-validate@^21.0.0:
+  version "21.0.0"
+  resolved "https://registry.yarnpkg.com/jest-validate/-/jest-validate-21.0.0.tgz#f906d54eca2a485ffbfb2d8a7d58831c026e6dd5"
+  dependencies:
+    chalk "^2.0.1"
+    jest-get-type "^21.0.0"
+    leven "^2.1.0"
+    pretty-format "^21.0.0"
+
 jest@^20.0.3:
   version "20.0.4"
   resolved "https://registry.yarnpkg.com/jest/-/jest-20.0.4.tgz#3dd260c2989d6dad678b1e9cc4d91944f6d602ac"
@@ -2267,14 +2397,10 @@ ms@2.0.0:
   version "2.0.0"
   resolved "https://registry.yarnpkg.com/ms/-/ms-2.0.0.tgz#5608aeadfc00be6c2901df5f9861788de0d597c8"
 
-mute-stream@0.0.6:
+mute-stream@0.0.6, mute-stream@~0.0.4:
   version "0.0.6"
   resolved "https://registry.yarnpkg.com/mute-stream/-/mute-stream-0.0.6.tgz#48962b19e169fd1dfc240b3f1e7317627bbc47db"
 
-mute-stream@~0.0.4:
-  version "0.0.7"
-  resolved "https://registry.yarnpkg.com/mute-stream/-/mute-stream-0.0.7.tgz#3075ce93bc21b8fab43e1bc4da7e8115ed1e7bab"
-
 natural-compare@^1.4.0:
   version "1.4.0"
   resolved "https://registry.yarnpkg.com/natural-compare/-/natural-compare-1.4.0.tgz#4abebfeed7541f2c27acfb29bdbbd15c8d5ba4f7"
@@ -2498,6 +2624,10 @@ osenv@^0.1.0, 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"
@@ -2645,6 +2775,13 @@ pretty-format@^20.0.3:
     ansi-regex "^2.1.1"
     ansi-styles "^3.0.0"
 
+pretty-format@^21.0.0:
+  version "21.0.0"
+  resolved "https://registry.yarnpkg.com/pretty-format/-/pretty-format-21.0.0.tgz#bea1522c4c47e49b44db5b6fbf83e7737251f305"
+  dependencies:
+    ansi-regex "^3.0.0"
+    ansi-styles "^3.2.0"
+
 private@^0.1.6:
   version "0.1.7"
   resolved "https://registry.yarnpkg.com/private/-/private-0.1.7.tgz#68ce5e8a1ef0a23bb570cc28537b5332aba63ef1"
@@ -3226,6 +3363,12 @@ supports-color@^3.1.2:
   dependencies:
     has-flag "^1.0.0"
 
+supports-color@^4.0.0:
+  version "4.4.0"
+  resolved "https://registry.yarnpkg.com/supports-color/-/supports-color-4.4.0.tgz#883f7ddabc165142b2a61427f3352ded195d1a3e"
+  dependencies:
+    has-flag "^2.0.0"
+
 symbol-tree@^3.2.1:
   version "3.2.2"
   resolved "https://registry.yarnpkg.com/symbol-tree/-/symbol-tree-3.2.2.tgz#ae27db38f660a7ae2e1c3b7d1bc290819b8519e6"
@@ -3299,21 +3442,19 @@ trim-right@^1.0.1:
   version "1.0.1"
   resolved "https://registry.yarnpkg.com/trim-right/-/trim-right-1.0.1.tgz#cb2e1203067e0c8de1f614094b9fe45704ea6003"
 
-ts-jest@^20.0.4:
-  version "20.0.6"
-  resolved "https://registry.yarnpkg.com/ts-jest/-/ts-jest-20.0.6.tgz#39c2810c05d6f6908dac15929dae206b494b73f4"
+ts-jest@21.0.0:
+  version "21.0.0"
+  resolved "https://registry.yarnpkg.com/ts-jest/-/ts-jest-21.0.0.tgz#261c0b90270bfaa57c8d9ef2a0b5f3a41efc38e9"
   dependencies:
-    "@types/babel-core" "^6.7.14"
     babel-core "^6.24.1"
     babel-plugin-istanbul "^4.1.4"
     babel-plugin-transform-es2015-modules-commonjs "^6.24.1"
-    babel-preset-jest "^20.0.3"
-    fs-extra "^3.0.0"
-    jest-config "^20.0.0"
-    jest-util "^20.0.0"
+    babel-preset-jest "^21.0.0"
+    fs-extra "^4.0.0"
+    jest-config "^21.0.0"
+    jest-util "^21.0.0"
     pkg-dir "^2.0.0"
     source-map-support "^0.4.4"
-    tsconfig "^6.0.0"
     yargs "^8.0.1"
 
 ts-node@^3.0.0: