diff --git a/package.json b/package.json
index 8dcb08b41..a234b9d9d 100644
--- a/package.json
+++ b/package.json
@@ -14,7 +14,6 @@
     "flow-bin": "^0.65.0",
     "husky": "^0.14.3",
     "jest": "^22.0.4",
-    "lint-staged": "^6.0.0",
     "lodash": "^4.17.4",
     "promise-toolbox": "^0.9.5",
     "sorted-object": "^2.0.1"
@@ -40,23 +39,13 @@
       "\\.jsx?$": "babel-jest"
     }
   },
-  "lint-staged": {
-    "*.js": [
-      "lint-staged-stash",
-      "eslint --fix",
-      "jest --findRelatedTests --passWithNoTests",
-      "lint-staged-unstash"
-    ]
-  },
   "private": true,
   "scripts": {
     "build": "scripts/run-script --parallel build",
     "clean": "scripts/run-script --parallel clean",
     "dev-test": "jest --bail --watch",
-    "lint-staged-stash": "touch .lint-staged && git stash save --include-untracked --keep-index && true",
-    "lint-staged-unstash": "git stash pop && rm -f .lint-staged && true",
     "posttest": "scripts/run-script test",
-    "precommit": "lint-staged",
+    "precommit": "scripts/lint-staged",
     "prepare": "scripts/run-script prepare",
     "pretest": "eslint --ignore-path .gitignore .",
     "test": "jest && flow status"
diff --git a/scripts/lint-staged b/scripts/lint-staged
new file mode 100755
index 000000000..ff6891a7b
--- /dev/null
+++ b/scripts/lint-staged
@@ -0,0 +1,51 @@
+#!/bin/sh
+
+set -eu
+
+format_files () {
+  eslint --fix "$@"
+}
+test_files () {
+  jest --findRelatedTests --passWithNoTests "$@"
+}
+
+# compute the list of staged files we are interested in
+set --
+buf=$(mktemp -u)
+git diff-index --cached --diff-filter=AM --name-only HEAD > "$buf"
+while IFS= read -r file
+do
+  case "$file" in
+    *.js)
+      set -- "$@" "$file";;
+  esac
+done < "$buf"
+rm -f "$buf"
+
+if [ $# -eq 0 ]
+then
+  exit
+fi
+
+format_files "$@"
+
+# stash unstaged changes
+if stash=$(git stash create --keep-index --quiet)
+then
+  # remove those changes from the worktree
+  git checkout .
+
+  format_files "$@"
+
+  # unstash on exit
+  on_exit () {
+    git read-tree HEAD
+    git checkout $stash "$@"
+  }
+  trap 'GIT_INDEX_FILE=$buf on_exit "$@"; rm -f "$buf"' EXIT
+fi
+
+test_files "$@"
+
+# add any changes made by the commands
+git add "$@"
diff --git a/yarn.lock b/yarn.lock
index 850c1fbb9..774aedeef 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -758,7 +758,7 @@ ansi-cyan@^0.1.1:
   dependencies:
     ansi-wrap "0.1.0"
 
-ansi-escapes@^1.0.0, ansi-escapes@^1.1.0:
+ansi-escapes@^1.1.0:
   version "1.4.0"
   resolved "https://registry.yarnpkg.com/ansi-escapes/-/ansi-escapes-1.4.0.tgz#d3a8a83b319aa67793662b13e761c7911422306e"
 
@@ -812,10 +812,6 @@ ansi_up@^2.0.2:
   version "2.0.2"
   resolved "https://registry.yarnpkg.com/ansi_up/-/ansi_up-2.0.2.tgz#9b54de508c5c579f5b6968e65c1b863e0680ab92"
 
-any-observable@^0.2.0:
-  version "0.2.0"
-  resolved "https://registry.yarnpkg.com/any-observable/-/any-observable-0.2.0.tgz#c67870058003579009083f54ac0abafb5c33d242"
-
 any-promise@^1.0.0, any-promise@^1.3.0:
   version "1.3.0"
   resolved "https://registry.yarnpkg.com/any-promise/-/any-promise-1.3.0.tgz#abc6afeedcea52e809cdc0376aed3ce39635d17f"
@@ -845,10 +841,6 @@ app-conf@^0.5.0:
     make-error "^1.3.0"
     xdg-basedir "^3.0.0"
 
-app-root-path@^2.0.0:
-  version "2.0.1"
-  resolved "https://registry.yarnpkg.com/app-root-path/-/app-root-path-2.0.1.tgz#cd62dcf8e4fd5a417efc664d2e5b10653c651b46"
-
 append-buffer@^1.0.2:
   version "1.0.2"
   resolved "https://registry.yarnpkg.com/append-buffer/-/append-buffer-1.0.2.tgz#d8220cf466081525efea50614f3de6514dfa58f1"
@@ -2792,29 +2784,12 @@ clean-css@^3.3.0:
     commander "2.8.x"
     source-map "0.4.x"
 
-cli-cursor@^1.0.2:
-  version "1.0.2"
-  resolved "https://registry.yarnpkg.com/cli-cursor/-/cli-cursor-1.0.2.tgz#64da3f7d56a54412e59794bd62dc35295e8f2987"
-  dependencies:
-    restore-cursor "^1.0.1"
-
 cli-cursor@^2.1.0:
   version "2.1.0"
   resolved "https://registry.yarnpkg.com/cli-cursor/-/cli-cursor-2.1.0.tgz#b35dac376479facc3e94747d41d0d0f5238ffcb5"
   dependencies:
     restore-cursor "^2.0.0"
 
-cli-spinners@^0.1.2:
-  version "0.1.2"
-  resolved "https://registry.yarnpkg.com/cli-spinners/-/cli-spinners-0.1.2.tgz#bb764d88e185fb9e1e6a2a1f19772318f605e31c"
-
-cli-truncate@^0.2.1:
-  version "0.2.1"
-  resolved "https://registry.yarnpkg.com/cli-truncate/-/cli-truncate-0.2.1.tgz#9f15cfbb0705005369216c626ac7d05ab90dd574"
-  dependencies:
-    slice-ansi "0.0.4"
-    string-width "^1.0.1"
-
 cli-width@^2.0.0:
   version "2.2.0"
   resolved "https://registry.yarnpkg.com/cli-width/-/cli-width-2.2.0.tgz#ff19ede8a9a5e579324147b0c11f0fbcbabed639"
@@ -3115,15 +3090,6 @@ core-util-is@1.0.2, core-util-is@~1.0.0:
   version "1.0.2"
   resolved "https://registry.yarnpkg.com/core-util-is/-/core-util-is-1.0.2.tgz#b5fd54220aa2bc5ab57aab7140c940754503c1a7"
 
-cosmiconfig@^4.0.0:
-  version "4.0.0"
-  resolved "https://registry.yarnpkg.com/cosmiconfig/-/cosmiconfig-4.0.0.tgz#760391549580bbd2df1e562bc177b13c290972dc"
-  dependencies:
-    is-directory "^0.3.1"
-    js-yaml "^3.9.0"
-    parse-json "^4.0.0"
-    require-from-string "^2.0.1"
-
 crc32-stream@^2.0.0:
   version "2.0.0"
   resolved "https://registry.yarnpkg.com/crc32-stream/-/crc32-stream-2.0.0.tgz#e3cdd3b4df3168dd74e3de3fbbcb7b297fe908f4"
@@ -3541,10 +3507,6 @@ data-uri-to-buffer@1:
   version "1.2.0"
   resolved "https://registry.yarnpkg.com/data-uri-to-buffer/-/data-uri-to-buffer-1.2.0.tgz#77163ea9c20d8641b4707e8f18abdf9a78f34835"
 
-date-fns@^1.27.2:
-  version "1.29.0"
-  resolved "https://registry.yarnpkg.com/date-fns/-/date-fns-1.29.0.tgz#12e609cdcb935127311d04d33334e2960a2a54e6"
-
 date-now@^0.1.4:
   version "0.1.4"
   resolved "https://registry.yarnpkg.com/date-now/-/date-now-0.1.4.tgz#eaf439fd4d4848ad74e5cc7dbef200672b9e345b"
@@ -3603,10 +3565,6 @@ decorator-synchronized@^0.3.0:
   version "0.3.0"
   resolved "https://registry.yarnpkg.com/decorator-synchronized/-/decorator-synchronized-0.3.0.tgz#72a21e7f0208abba2cd1ecd622aafb4a65b1096c"
 
-dedent@^0.7.0:
-  version "0.7.0"
-  resolved "https://registry.yarnpkg.com/dedent/-/dedent-0.7.0.tgz#2495ddbaf6eb874abb0e1be9df22d2e5a544326c"
-
 deep-extend@~0.4.0:
   version "0.4.2"
   resolved "https://registry.yarnpkg.com/deep-extend/-/deep-extend-0.4.2.tgz#48b699c27e334bf89f10892be432f6e4c7d34a7f"
@@ -3968,10 +3926,6 @@ electron-to-chromium@^1.3.30:
   version "1.3.33"
   resolved "https://registry.yarnpkg.com/electron-to-chromium/-/electron-to-chromium-1.3.33.tgz#bf00703d62a7c65238136578c352d6c5c042a545"
 
-elegant-spinner@^1.0.1:
-  version "1.0.1"
-  resolved "https://registry.yarnpkg.com/elegant-spinner/-/elegant-spinner-1.0.1.tgz#db043521c95d7e303fd8f345bedc3349cfb0729e"
-
 elliptic@^6.0.0:
   version "6.4.0"
   resolved "https://registry.yarnpkg.com/elliptic/-/elliptic-6.4.0.tgz#cac9af8762c85836187003c8dfe193e5e2eae5df"
@@ -4063,7 +4017,7 @@ errno@~0.1.1:
   dependencies:
     prr "~1.0.1"
 
-error-ex@^1.2.0, error-ex@^1.3.1:
+error-ex@^1.2.0:
   version "1.3.1"
   resolved "https://registry.yarnpkg.com/error-ex/-/error-ex-1.3.1.tgz#f855a86ce61adc4e8621c3cda21e7a7612c3a8dc"
   dependencies:
@@ -4390,18 +4344,6 @@ execa@^0.7.0:
     signal-exit "^3.0.0"
     strip-eof "^1.0.0"
 
-execa@^0.8.0:
-  version "0.8.0"
-  resolved "https://registry.yarnpkg.com/execa/-/execa-0.8.0.tgz#d8d76bbc1b55217ed190fd6dd49d3c774ecfc8da"
-  dependencies:
-    cross-spawn "^5.0.1"
-    get-stream "^3.0.0"
-    is-stream "^1.1.0"
-    npm-run-path "^2.0.0"
-    p-finally "^1.0.0"
-    signal-exit "^3.0.0"
-    strip-eof "^1.0.0"
-
 execa@^0.9.0:
   version "0.9.0"
   resolved "https://registry.yarnpkg.com/execa/-/execa-0.9.0.tgz#adb7ce62cf985071f60580deb4a88b9e34712d01"
@@ -4418,10 +4360,6 @@ exenv@^1.2.0, exenv@^1.2.1:
   version "1.2.2"
   resolved "https://registry.yarnpkg.com/exenv/-/exenv-1.2.2.tgz#2ae78e85d9894158670b03d47bec1f03bd91bb9d"
 
-exit-hook@^1.0.0:
-  version "1.1.1"
-  resolved "https://registry.yarnpkg.com/exit-hook/-/exit-hook-1.1.1.tgz#f05ca233b48c05d54fff07765df8507e95c02ff8"
-
 exit@^0.1.2:
   version "0.1.2"
   resolved "https://registry.yarnpkg.com/exit/-/exit-0.1.2.tgz#0632638f8d877cc82107d30a0fff1a17cba1cd0c"
@@ -4655,13 +4593,6 @@ fifolock@^1.0.0:
   version "1.0.0"
   resolved "https://registry.yarnpkg.com/fifolock/-/fifolock-1.0.0.tgz#a37e54f3ebe69d13480d95a82abc42b7a5c1792d"
 
-figures@^1.7.0:
-  version "1.7.0"
-  resolved "https://registry.yarnpkg.com/figures/-/figures-1.7.0.tgz#cbe1e3affcf1cd44b80cadfed28dc793a9701d2e"
-  dependencies:
-    escape-string-regexp "^1.0.5"
-    object-assign "^4.1.0"
-
 figures@^2.0.0:
   version "2.0.0"
   resolved "https://registry.yarnpkg.com/figures/-/figures-2.0.0.tgz#3ab1a2d2a62c8bfb431a0c94cb797a2fce27c962"
@@ -4721,10 +4652,6 @@ finalhandler@1.1.0:
     statuses "~1.3.1"
     unpipe "~1.0.0"
 
-find-parent-dir@^0.3.0:
-  version "0.3.0"
-  resolved "https://registry.yarnpkg.com/find-parent-dir/-/find-parent-dir-0.3.0.tgz#33c44b429ab2b2f0646299c5f9f718f376ff8d54"
-
 find-up@^1.0.0:
   version "1.1.2"
   resolved "https://registry.yarnpkg.com/find-up/-/find-up-1.1.2.tgz#6b2e9822b1a2ce0a60ab64d610eccad53cb24d0f"
@@ -5006,10 +4933,6 @@ get-caller-file@^1.0.1:
   version "1.0.2"
   resolved "https://registry.yarnpkg.com/get-caller-file/-/get-caller-file-1.0.2.tgz#f702e63127e7e231c160a80c1554acb70d5047e5"
 
-get-own-enumerable-property-symbols@^2.0.1:
-  version "2.0.1"
-  resolved "https://registry.yarnpkg.com/get-own-enumerable-property-symbols/-/get-own-enumerable-property-symbols-2.0.1.tgz#5c4ad87f2834c4b9b4e84549dc1e0650fb38c24b"
-
 get-stdin@^4.0.1:
   version "4.0.1"
   resolved "https://registry.yarnpkg.com/get-stdin/-/get-stdin-4.0.1.tgz#b968c6b0a04384324902e8bf1a5df32579a450fe"
@@ -5833,10 +5756,6 @@ indent-string@^2.1.0:
   dependencies:
     repeating "^2.0.0"
 
-indent-string@^3.0.0:
-  version "3.2.0"
-  resolved "https://registry.yarnpkg.com/indent-string/-/indent-string-3.2.0.tgz#4a5fd6d27cc332f37e5419a504dbb837105c9289"
-
 index-modules@^0.3.0:
   version "0.3.0"
   resolved "https://registry.yarnpkg.com/index-modules/-/index-modules-0.3.0.tgz#70a0d80be07ad3e1a6e4849c9aaf08348050a9ae"
@@ -6093,10 +6012,6 @@ is-descriptor@^1.0.0:
     is-data-descriptor "^1.0.0"
     kind-of "^6.0.2"
 
-is-directory@^0.3.1:
-  version "0.3.1"
-  resolved "https://registry.yarnpkg.com/is-directory/-/is-directory-0.3.1.tgz#61339b6f2475fc772fd9c9d83f5c8575dc154ae1"
-
 is-dotfile@^1.0.0:
   version "1.0.3"
   resolved "https://registry.yarnpkg.com/is-dotfile/-/is-dotfile-1.0.3.tgz#a6a2f32ffd2dfb04f5ca25ecd0f6b83cf798a1e1"
@@ -6216,7 +6131,7 @@ is-number@^4.0.0:
   version "4.0.0"
   resolved "https://registry.yarnpkg.com/is-number/-/is-number-4.0.0.tgz#0026e37f5454d73e356dfe6564699867c6a7f0ff"
 
-is-obj@^1.0.0, is-obj@^1.0.1:
+is-obj@^1.0.0:
   version "1.0.1"
   resolved "https://registry.yarnpkg.com/is-obj/-/is-obj-1.0.1.tgz#3e4729ac1f5fde025cd7d83a896dab9f4f67db0f"
 
@@ -6224,12 +6139,6 @@ is-object@^1.0.1:
   version "1.0.1"
   resolved "https://registry.yarnpkg.com/is-object/-/is-object-1.0.1.tgz#8952688c5ec2ffd6b03ecc85e769e02903083470"
 
-is-observable@^0.2.0:
-  version "0.2.0"
-  resolved "https://registry.yarnpkg.com/is-observable/-/is-observable-0.2.0.tgz#b361311d83c6e5d726cabf5e250b0237106f5ae2"
-  dependencies:
-    symbol-observable "^0.2.2"
-
 is-odd@^1.0.0:
   version "1.0.0"
   resolved "https://registry.yarnpkg.com/is-odd/-/is-odd-1.0.0.tgz#3b8a932eb028b3775c39bb09e91767accdb69088"
@@ -6288,10 +6197,6 @@ is-regex@^1.0.3, is-regex@^1.0.4:
   dependencies:
     has "^1.0.1"
 
-is-regexp@^1.0.0:
-  version "1.0.0"
-  resolved "https://registry.yarnpkg.com/is-regexp/-/is-regexp-1.0.0.tgz#fd2d883545c46bac5a633e7b9a09e87fa2cb5069"
-
 is-relative@^1.0.0:
   version "1.0.0"
   resolved "https://registry.yarnpkg.com/is-relative/-/is-relative-1.0.0.tgz#a1bb6935ce8c5dba1e8b9754b9b2dcc020e2260d"
@@ -6541,10 +6446,6 @@ jest-environment-node@^22.2.0:
     jest-mock "^22.2.0"
     jest-util "^22.2.0"
 
-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-get-type@^22.1.0:
   version "22.1.0"
   resolved "https://registry.yarnpkg.com/jest-get-type/-/jest-get-type-22.1.0.tgz#4e90af298ed6181edc85d2da500dbd2753e0d5a9"
@@ -6684,15 +6585,6 @@ jest-util@^22.2.0:
     jest-validate "^22.2.0"
     mkdirp "^0.5.1"
 
-jest-validate@^21.1.0:
-  version "21.2.1"
-  resolved "https://registry.yarnpkg.com/jest-validate/-/jest-validate-21.2.1.tgz#cc0cbca653cd54937ba4f2a111796774530dd3c7"
-  dependencies:
-    chalk "^2.0.1"
-    jest-get-type "^21.2.0"
-    leven "^2.1.0"
-    pretty-format "^21.2.1"
-
 jest-validate@^22.2.0:
   version "22.2.0"
   resolved "https://registry.yarnpkg.com/jest-validate/-/jest-validate-22.2.0.tgz#f7ce459105a8210825e5e57279f868ab080063fa"
@@ -6731,7 +6623,7 @@ js-tokens@^3.0.0, js-tokens@^3.0.2:
   version "3.0.2"
   resolved "https://registry.yarnpkg.com/js-tokens/-/js-tokens-3.0.2.tgz#9866df395102130e38f7f996bceb65443209c25b"
 
-js-yaml@^3.10.0, js-yaml@^3.7.0, js-yaml@^3.9.0, js-yaml@^3.9.1:
+js-yaml@^3.10.0, js-yaml@^3.7.0, js-yaml@^3.9.1:
   version "3.10.0"
   resolved "https://registry.yarnpkg.com/js-yaml/-/js-yaml-3.10.0.tgz#2e78441646bd4682e963f22b6e92823c309c62dc"
   dependencies:
@@ -6789,10 +6681,6 @@ json-buffer@3.0.0:
   version "3.0.0"
   resolved "https://registry.yarnpkg.com/json-buffer/-/json-buffer-3.0.0.tgz#5b1f397afc75d677bde8bcfc0e47e1f9a3d9a898"
 
-json-parse-better-errors@^1.0.1:
-  version "1.0.1"
-  resolved "https://registry.yarnpkg.com/json-parse-better-errors/-/json-parse-better-errors-1.0.1.tgz#50183cd1b2d25275de069e9e71b467ac9eab973a"
-
 json-rpc-peer@^0.13.1:
   version "0.13.2"
   resolved "https://registry.yarnpkg.com/json-rpc-peer/-/json-rpc-peer-0.13.2.tgz#76ef4374ab32d133017a0499b7211389e8c6d50a"
@@ -7244,79 +7132,6 @@ limit-concurrency-decorator@^0.2.0:
   version "0.2.0"
   resolved "https://registry.yarnpkg.com/limit-concurrency-decorator/-/limit-concurrency-decorator-0.2.0.tgz#5ed8b8f830d36e22cbe0bcaf281b62498aec3e73"
 
-lint-staged@^6.0.0:
-  version "6.1.0"
-  resolved "https://registry.yarnpkg.com/lint-staged/-/lint-staged-6.1.0.tgz#28f600c10a6cbd249ceb003118a1552e53544a93"
-  dependencies:
-    app-root-path "^2.0.0"
-    chalk "^2.1.0"
-    commander "^2.11.0"
-    cosmiconfig "^4.0.0"
-    debug "^3.1.0"
-    dedent "^0.7.0"
-    execa "^0.8.0"
-    find-parent-dir "^0.3.0"
-    is-glob "^4.0.0"
-    jest-validate "^21.1.0"
-    listr "^0.13.0"
-    lodash "^4.17.4"
-    log-symbols "^2.0.0"
-    minimatch "^3.0.0"
-    npm-which "^3.0.1"
-    p-map "^1.1.1"
-    path-is-inside "^1.0.2"
-    pify "^3.0.0"
-    staged-git-files "0.0.4"
-    stringify-object "^3.2.0"
-
-listr-silent-renderer@^1.1.1:
-  version "1.1.1"
-  resolved "https://registry.yarnpkg.com/listr-silent-renderer/-/listr-silent-renderer-1.1.1.tgz#924b5a3757153770bf1a8e3fbf74b8bbf3f9242e"
-
-listr-update-renderer@^0.4.0:
-  version "0.4.0"
-  resolved "https://registry.yarnpkg.com/listr-update-renderer/-/listr-update-renderer-0.4.0.tgz#344d980da2ca2e8b145ba305908f32ae3f4cc8a7"
-  dependencies:
-    chalk "^1.1.3"
-    cli-truncate "^0.2.1"
-    elegant-spinner "^1.0.1"
-    figures "^1.7.0"
-    indent-string "^3.0.0"
-    log-symbols "^1.0.2"
-    log-update "^1.0.2"
-    strip-ansi "^3.0.1"
-
-listr-verbose-renderer@^0.4.0:
-  version "0.4.1"
-  resolved "https://registry.yarnpkg.com/listr-verbose-renderer/-/listr-verbose-renderer-0.4.1.tgz#8206f4cf6d52ddc5827e5fd14989e0e965933a35"
-  dependencies:
-    chalk "^1.1.3"
-    cli-cursor "^1.0.2"
-    date-fns "^1.27.2"
-    figures "^1.7.0"
-
-listr@^0.13.0:
-  version "0.13.0"
-  resolved "https://registry.yarnpkg.com/listr/-/listr-0.13.0.tgz#20bb0ba30bae660ee84cc0503df4be3d5623887d"
-  dependencies:
-    chalk "^1.1.3"
-    cli-truncate "^0.2.1"
-    figures "^1.7.0"
-    indent-string "^2.1.0"
-    is-observable "^0.2.0"
-    is-promise "^2.1.0"
-    is-stream "^1.1.0"
-    listr-silent-renderer "^1.1.1"
-    listr-update-renderer "^0.4.0"
-    listr-verbose-renderer "^0.4.0"
-    log-symbols "^1.0.2"
-    log-update "^1.0.2"
-    ora "^0.2.3"
-    p-map "^1.1.1"
-    rxjs "^5.4.2"
-    stream-to-observable "^0.2.0"
-    strip-ansi "^3.0.1"
-
 livereload-js@^2.2.0:
   version "2.3.0"
   resolved "https://registry.yarnpkg.com/livereload-js/-/livereload-js-2.3.0.tgz#c3ab22e8aaf5bf3505d80d098cbad67726548c9a"
@@ -7543,19 +7358,6 @@ log-symbols@^1.0.0, log-symbols@^1.0.2:
   dependencies:
     chalk "^1.0.0"
 
-log-symbols@^2.0.0:
-  version "2.2.0"
-  resolved "https://registry.yarnpkg.com/log-symbols/-/log-symbols-2.2.0.tgz#5740e1c5d6f0dfda4ad9323b5332107ef6b4c40a"
-  dependencies:
-    chalk "^2.0.1"
-
-log-update@^1.0.2:
-  version "1.0.2"
-  resolved "https://registry.yarnpkg.com/log-update/-/log-update-1.0.2.tgz#19929f64c4093d2d2e7075a1dad8af59c296b8d1"
-  dependencies:
-    ansi-escapes "^1.0.0"
-    cli-cursor "^1.0.2"
-
 longest@^1.0.1:
   version "1.0.1"
   resolved "https://registry.yarnpkg.com/longest/-/longest-1.0.1.tgz#30a0b2da38f73770e8294a0d22e6625ed77d0097"
@@ -8341,12 +8143,6 @@ now-and-later@^2.0.0:
   dependencies:
     once "^1.3.2"
 
-npm-path@^2.0.2:
-  version "2.0.4"
-  resolved "https://registry.yarnpkg.com/npm-path/-/npm-path-2.0.4.tgz#c641347a5ff9d6a09e4d9bce5580c4f505278e64"
-  dependencies:
-    which "^1.2.10"
-
 npm-run-path@^1.0.0:
   version "1.0.0"
   resolved "https://registry.yarnpkg.com/npm-run-path/-/npm-run-path-1.0.0.tgz#f5c32bf595fe81ae927daec52e82f8b000ac3c8f"
@@ -8359,14 +8155,6 @@ npm-run-path@^2.0.0:
   dependencies:
     path-key "^2.0.0"
 
-npm-which@^3.0.1:
-  version "3.0.1"
-  resolved "https://registry.yarnpkg.com/npm-which/-/npm-which-3.0.1.tgz#9225f26ec3a285c209cae67c3b11a6b4ab7140aa"
-  dependencies:
-    commander "^2.9.0"
-    npm-path "^2.0.2"
-    which "^1.2.10"
-
 "npmlog@0 || 1 || 2 || 3 || 4", npmlog@^4.0.0, npmlog@^4.0.1, npmlog@^4.0.2:
   version "4.1.2"
   resolved "https://registry.yarnpkg.com/npmlog/-/npmlog-4.1.2.tgz#08a7f2a8bf734604779a9efa4ad5cc717abb954b"
@@ -8534,10 +8322,6 @@ once@^1.3.0, once@^1.3.1, once@^1.3.2, once@^1.3.3, once@^1.4.0:
   dependencies:
     wrappy "1"
 
-onetime@^1.0.0:
-  version "1.1.0"
-  resolved "https://registry.yarnpkg.com/onetime/-/onetime-1.1.0.tgz#a1f7838f8314c516f05ecefcbc4ccfe04b4ed789"
-
 onetime@^2.0.0:
   version "2.0.1"
   resolved "https://registry.yarnpkg.com/onetime/-/onetime-2.0.1.tgz#067428230fd67443b2794b22bba528b6867962d4"
@@ -8588,15 +8372,6 @@ options@>=0.0.5:
   version "0.0.6"
   resolved "https://registry.yarnpkg.com/options/-/options-0.0.6.tgz#ec22d312806bb53e731773e7cdaefcf1c643128f"
 
-ora@^0.2.3:
-  version "0.2.3"
-  resolved "https://registry.yarnpkg.com/ora/-/ora-0.2.3.tgz#37527d220adcd53c39b73571d754156d5db657a4"
-  dependencies:
-    chalk "^1.1.1"
-    cli-cursor "^1.0.2"
-    cli-spinners "^0.1.2"
-    object-assign "^4.0.1"
-
 ordered-read-streams@^1.0.0:
   version "1.0.1"
   resolved "https://registry.yarnpkg.com/ordered-read-streams/-/ordered-read-streams-1.0.1.tgz#77c0cb37c41525d64166d990ffad7ec6a0e1363e"
@@ -8692,10 +8467,6 @@ p-locate@^2.0.0:
   dependencies:
     p-limit "^1.1.0"
 
-p-map@^1.1.1:
-  version "1.2.0"
-  resolved "https://registry.yarnpkg.com/p-map/-/p-map-1.2.0.tgz#e4e94f311eabbc8633a1e79908165fca26241b6b"
-
 p-reduce@^1.0.0:
   version "1.0.0"
   resolved "https://registry.yarnpkg.com/p-reduce/-/p-reduce-1.0.0.tgz#18c2b0dd936a4690a529f8231f58a0fdb6a47dfa"
@@ -8782,13 +8553,6 @@ parse-json@^2.2.0:
   dependencies:
     error-ex "^1.2.0"
 
-parse-json@^4.0.0:
-  version "4.0.0"
-  resolved "https://registry.yarnpkg.com/parse-json/-/parse-json-4.0.0.tgz#be35f5425be1f7f6c747184f98a788cb99477ee0"
-  dependencies:
-    error-ex "^1.3.1"
-    json-parse-better-errors "^1.0.1"
-
 parse-ms@^1.0.0:
   version "1.0.1"
   resolved "https://registry.yarnpkg.com/parse-ms/-/parse-ms-1.0.1.tgz#56346d4749d78f23430ca0c713850aef91aa361d"
@@ -9118,13 +8882,6 @@ prettier@^1.9.2:
   version "1.10.2"
   resolved "https://registry.yarnpkg.com/prettier/-/prettier-1.10.2.tgz#1af8356d1842276a99a5b5529c82dd9e9ad3cc93"
 
-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 "^3.0.0"
-    ansi-styles "^3.2.0"
-
 pretty-format@^22.0.3, pretty-format@^22.1.0:
   version "22.1.0"
   resolved "https://registry.yarnpkg.com/pretty-format/-/pretty-format-22.1.0.tgz#2277605b40ed4529ae4db51ff62f4be817647914"
@@ -10175,10 +9932,6 @@ require-directory@^2.1.1:
   version "2.1.1"
   resolved "https://registry.yarnpkg.com/require-directory/-/require-directory-2.1.1.tgz#8c64ad5fd30dab1c976e2344ffe7f792a6a6df42"
 
-require-from-string@^2.0.1:
-  version "2.0.1"
-  resolved "https://registry.yarnpkg.com/require-from-string/-/require-from-string-2.0.1.tgz#c545233e9d7da6616e9d59adfb39fc9f588676ff"
-
 require-main-filename@^1.0.1:
   version "1.0.1"
   resolved "https://registry.yarnpkg.com/require-main-filename/-/require-main-filename-1.0.1.tgz#97f717b69d48784f5f526a6c5aa8ffdda055a4d1"
@@ -10253,13 +10006,6 @@ responselike@1.0.2:
   dependencies:
     lowercase-keys "^1.0.0"
 
-restore-cursor@^1.0.1:
-  version "1.0.1"
-  resolved "https://registry.yarnpkg.com/restore-cursor/-/restore-cursor-1.0.1.tgz#34661f46886327fed2991479152252df92daa541"
-  dependencies:
-    exit-hook "^1.0.0"
-    onetime "^1.0.0"
-
 restore-cursor@^2.0.0:
   version "2.0.0"
   resolved "https://registry.yarnpkg.com/restore-cursor/-/restore-cursor-2.0.0.tgz#9f7ee287f82fd326d4fd162923d62129eee0dfaf"
@@ -10327,7 +10073,7 @@ rx@^4.1.0:
   version "4.1.0"
   resolved "https://registry.yarnpkg.com/rx/-/rx-4.1.0.tgz#a5f13ff79ef3b740fe30aa803fb09f98805d4782"
 
-rxjs@^5.4.2, rxjs@^5.5.2:
+rxjs@^5.5.2:
   version "5.5.6"
   resolved "https://registry.yarnpkg.com/rxjs/-/rxjs-5.5.6.tgz#e31fb96d6fd2ff1fd84bcea8ae9c02d007179c02"
   dependencies:
@@ -10558,10 +10304,6 @@ slash@^1.0.0:
   version "1.0.0"
   resolved "https://registry.yarnpkg.com/slash/-/slash-1.0.0.tgz#c41f2f6c39fc16d1cd17ad4b5d896114ae470d55"
 
-slice-ansi@0.0.4:
-  version "0.0.4"
-  resolved "https://registry.yarnpkg.com/slice-ansi/-/slice-ansi-0.0.4.tgz#edbf8903f66f7ce2f8eafd6ceed65e264c831b35"
-
 slice-ansi@1.0.0:
   version "1.0.0"
   resolved "https://registry.yarnpkg.com/slice-ansi/-/slice-ansi-1.0.0.tgz#044f1a49d8842ff307aad6b505ed178bd950134d"
@@ -10774,10 +10516,6 @@ stack-utils@^1.0.1:
   version "1.0.1"
   resolved "https://registry.yarnpkg.com/stack-utils/-/stack-utils-1.0.1.tgz#d4f33ab54e8e38778b0ca5cfd3b3afb12db68620"
 
-staged-git-files@0.0.4:
-  version "0.0.4"
-  resolved "https://registry.yarnpkg.com/staged-git-files/-/staged-git-files-0.0.4.tgz#d797e1b551ca7a639dec0237dc6eb4bb9be17d35"
-
 static-extend@^0.1.1:
   version "0.1.2"
   resolved "https://registry.yarnpkg.com/static-extend/-/static-extend-0.1.2.tgz#60809c39cbff55337226fd5e0b520f341f1fb5c6"
@@ -10848,12 +10586,6 @@ stream-splicer@^2.0.0:
     inherits "^2.0.1"
     readable-stream "^2.0.2"
 
-stream-to-observable@^0.2.0:
-  version "0.2.0"
-  resolved "https://registry.yarnpkg.com/stream-to-observable/-/stream-to-observable-0.2.0.tgz#59d6ea393d87c2c0ddac10aa0d561bc6ba6f0e10"
-  dependencies:
-    any-observable "^0.2.0"
-
 stream-to-pull-stream@^1.7.1:
   version "1.7.2"
   resolved "https://registry.yarnpkg.com/stream-to-pull-stream/-/stream-to-pull-stream-1.7.2.tgz#757609ae1cebd33c7432d4afbe31ff78650b9dde"
@@ -10897,14 +10629,6 @@ string_decoder@~1.0.0, string_decoder@~1.0.3:
   dependencies:
     safe-buffer "~5.1.0"
 
-stringify-object@^3.2.0:
-  version "3.2.2"
-  resolved "https://registry.yarnpkg.com/stringify-object/-/stringify-object-3.2.2.tgz#9853052e5a88fb605a44cd27445aa257ad7ffbcd"
-  dependencies:
-    get-own-enumerable-property-symbols "^2.0.1"
-    is-obj "^1.0.1"
-    is-regexp "^1.0.0"
-
 stringstream@~0.0.4, stringstream@~0.0.5:
   version "0.0.5"
   resolved "https://registry.yarnpkg.com/stringstream/-/stringstream-0.0.5.tgz#4e484cd4de5a0bbbee18e46307710a8a81621878"
@@ -11056,10 +10780,6 @@ symbol-observable@1.0.1:
   version "1.0.1"
   resolved "https://registry.yarnpkg.com/symbol-observable/-/symbol-observable-1.0.1.tgz#8340fc4702c3122df5d22288f88283f513d3fdd4"
 
-symbol-observable@^0.2.2:
-  version "0.2.4"
-  resolved "https://registry.yarnpkg.com/symbol-observable/-/symbol-observable-0.2.4.tgz#95a83db26186d6af7e7a18dbd9760a2f86d08f40"
-
 symbol-observable@^1.0.3:
   version "1.2.0"
   resolved "https://registry.yarnpkg.com/symbol-observable/-/symbol-observable-1.2.0.tgz#c22688aed4eab3cdc2dfeacbb561660560a00804"
@@ -11821,7 +11541,7 @@ which-module@^2.0.0:
   version "2.0.0"
   resolved "https://registry.yarnpkg.com/which-module/-/which-module-2.0.0.tgz#d9ef07dce77b9902b8a3a8fa4b31c3e3f7e6e87a"
 
-which@1, which@^1.2.10, which@^1.2.12, which@^1.2.14, which@^1.2.8, which@^1.2.9, which@^1.3.0:
+which@1, which@^1.2.12, which@^1.2.14, which@^1.2.8, which@^1.2.9, which@^1.3.0:
   version "1.3.0"
   resolved "https://registry.yarnpkg.com/which/-/which-1.3.0.tgz#ff04bdfc010ee547d780bec38e1ac1c2777d253a"
   dependencies: