fixed xcpretty

playground/scripts/e2e.ios.js

             -derivedDataPath ./DerivedData/playground`;
 
   if (hasXcpretty()) {
-    shellUtils.exec.execSync(`${cmd} | xcpretty && exit ${PIPESTATUS[0]}`);
+    shellUtils.exec.execSync(`set -o pipefail && ${cmd} | xcpretty`);
   } else {
     shellUtils.exec.execSync(`${cmd}`);
   }

yarn.lock

   resolved "https://registry.yarnpkg.com/ansi-escapes/-/ansi-escapes-1.4.0.tgz#d3a8a83b319aa67793662b13e761c7911422306e"
 
 ansi-regex@^2.0.0:
-  version "2.0.0"
-  resolved "https://registry.yarnpkg.com/ansi-regex/-/ansi-regex-2.0.0.tgz#c5061b6e0ef8a81775e50f5d66151bf6bf371107"
+  version "2.1.1"
+  resolved "https://registry.yarnpkg.com/ansi-regex/-/ansi-regex-2.1.1.tgz#c3b33ab5ee360d86e0e628f0468ae7ef27d654df"
 
 ansi-styles@^2.2.1:
   version "2.2.1"
     to-fast-properties "^1.0.1"
 
 babylon@^6.11.0, babylon@^6.13.0, babylon@^6.13.1:
-  version "6.14.1"
-  resolved "https://registry.yarnpkg.com/babylon/-/babylon-6.14.1.tgz#956275fab72753ad9b3435d7afe58f8bf0a29815"
+  version "6.15.0"
+  resolved "https://registry.yarnpkg.com/babylon/-/babylon-6.15.0.tgz#ba65cfa1a80e1759b0e89fb562e27dccae70348e"
 
 balanced-match@^0.4.1:
   version "0.4.2"
     jsprim "^1.2.2"
     sshpk "^1.7.0"
 
-iconv-lite@0.4.11, iconv-lite@^0.4.5:
+iconv-lite@0.4.11:
   version "0.4.11"
   resolved "https://registry.yarnpkg.com/iconv-lite/-/iconv-lite-0.4.11.tgz#2ecb42fd294744922209a2e7c404dac8793d8ade"
 
   version "0.4.13"
   resolved "https://registry.yarnpkg.com/iconv-lite/-/iconv-lite-0.4.13.tgz#1f88aba4ab0b1508e8312acc39345f36e992e2f2"
 
-iconv-lite@^0.4.13, iconv-lite@~0.4.13:
+iconv-lite@^0.4.13, iconv-lite@^0.4.5, iconv-lite@~0.4.13:
   version "0.4.15"
   resolved "https://registry.yarnpkg.com/iconv-lite/-/iconv-lite-0.4.15.tgz#fe265a218ac6a57cfe854927e9d04c19825eddeb"
 
   version "2.0.0"
   resolved "https://registry.yarnpkg.com/js-tokens/-/js-tokens-2.0.0.tgz#79903f5563ee778cc1162e6dcf1a0027c97f9cb5"
 
+js-tokens@^3.0.0:
+  version "3.0.0"
+  resolved "https://registry.yarnpkg.com/js-tokens/-/js-tokens-3.0.0.tgz#a2f2a969caae142fb3cd56228358c89366957bd1"
+
 js-yaml@^3.5.1, js-yaml@^3.7.0:
   version "3.7.0"
   resolved "https://registry.yarnpkg.com/js-yaml/-/js-yaml-3.7.0.tgz#5c967ddd837a9bfdca5f2de84253abe8a1c03b80"
   resolved "https://registry.yarnpkg.com/longest/-/longest-1.0.1.tgz#30a0b2da38f73770e8294a0d22e6625ed77d0097"
 
 loose-envify@^1.0.0, loose-envify@^1.1.0:
-  version "1.3.0"
-  resolved "https://registry.yarnpkg.com/loose-envify/-/loose-envify-1.3.0.tgz#6b26248c42f6d4fa4b0d8542f78edfcde35642a8"
+  version "1.3.1"
+  resolved "https://registry.yarnpkg.com/loose-envify/-/loose-envify-1.3.1.tgz#d1a8ad33fa9ce0e713d65fdd0ac8b748d478c848"
   dependencies:
-    js-tokens "^2.0.0"
+    js-tokens "^3.0.0"
 
 loud-rejection@^1.0.0:
   version "1.6.0"
     parse-glob "^3.0.4"
     regex-cache "^0.4.2"
 
-"mime-db@>= 1.24.0 < 2", mime-db@~1.25.0:
-  version "1.25.0"
-  resolved "https://registry.yarnpkg.com/mime-db/-/mime-db-1.25.0.tgz#c18dbd7c73a5dbf6f44a024dc0d165a1e7b1c392"
+"mime-db@>= 1.24.0 < 2", mime-db@~1.26.0:
+  version "1.26.0"
+  resolved "https://registry.yarnpkg.com/mime-db/-/mime-db-1.26.0.tgz#eaffcd0e4fc6935cf8134da246e2e6c35305adff"
 
 mime-db@~1.23.0:
   version "1.23.0"
     mime-db "~1.23.0"
 
 mime-types@^2.1.12, mime-types@~2.1.11, mime-types@~2.1.13, mime-types@~2.1.6, mime-types@~2.1.7:
-  version "2.1.13"
-  resolved "https://registry.yarnpkg.com/mime-types/-/mime-types-2.1.13.tgz#e07aaa9c6c6b9a7ca3012c69003ad25a39e92a88"
+  version "2.1.14"
+  resolved "https://registry.yarnpkg.com/mime-types/-/mime-types-2.1.14.tgz#f7ef7d97583fcaf3b7d282b6f8b5679dab1e94ee"
   dependencies:
-    mime-db "~1.25.0"
+    mime-db "~1.26.0"
 
 mime@1.3.4, mime@^1.3.4:
   version "1.3.4"
   resolved "https://registry.yarnpkg.com/negotiator/-/negotiator-0.6.1.tgz#2b327184e8992101177b28563fb5e7102acd0ca9"
 
 node-emoji@^1.4.1:
-  version "1.5.0"
-  resolved "https://registry.yarnpkg.com/node-emoji/-/node-emoji-1.5.0.tgz#9a0d9fe03fd43afa357d6d8e439aa31e599959b7"
+  version "1.5.1"
+  resolved "https://registry.yarnpkg.com/node-emoji/-/node-emoji-1.5.1.tgz#fd918e412769bf8c448051238233840b2aff16a1"
   dependencies:
     string.prototype.codepointat "^0.2.0"
 
     hoek "2.x.x"
 
 source-map-support@^0.4.2:
-  version "0.4.8"
-  resolved "https://registry.yarnpkg.com/source-map-support/-/source-map-support-0.4.8.tgz#4871918d8a3af07289182e974e32844327b2e98b"
+  version "0.4.9"
+  resolved "https://registry.yarnpkg.com/source-map-support/-/source-map-support-0.4.9.tgz#45eaa04f067e049d987b27599ed014a37750aaff"
   dependencies:
     source-map "^0.5.3"
 
   resolved "https://registry.yarnpkg.com/sprintf-js/-/sprintf-js-1.0.3.tgz#04e6926f662895354f3dd015203633b857297e2c"
 
 sshpk@^1.7.0:
-  version "1.10.1"
-  resolved "https://registry.yarnpkg.com/sshpk/-/sshpk-1.10.1.tgz#30e1a5d329244974a1af61511339d595af6638b0"
+  version "1.10.2"
+  resolved "https://registry.yarnpkg.com/sshpk/-/sshpk-1.10.2.tgz#d5a804ce22695515638e798dbe23273de070a5fa"
   dependencies:
     asn1 "~0.2.3"
     assert-plus "^1.0.0"
   resolved "https://registry.yarnpkg.com/whatwg-fetch/-/whatwg-fetch-1.1.1.tgz#ac3c9d39f320c6dce5339969d054ef43dd333319"
 
 whatwg-url@^4.1.0:
-  version "4.2.0"
-  resolved "https://registry.yarnpkg.com/whatwg-url/-/whatwg-url-4.2.0.tgz#abf1a3f5ff4bc2005b3f0c2119382631789d8e44"
+  version "4.3.0"
+  resolved "https://registry.yarnpkg.com/whatwg-url/-/whatwg-url-4.3.0.tgz#92aaee21f4f2a642074357d70ef8500a7cbb171a"
   dependencies:
     tr46 "~0.0.3"
     webidl-conversions "^3.0.0"