diff --git a/package.json b/package.json
index 7ad3391..763826c 100644
--- a/package.json
+++ b/package.json
@@ -15,8 +15,8 @@
   "license": "MIT",
   "homepage": "https://github.com/pirxpilot/vis-why",
   "devDependencies": {
+    "@pirxpilot/jshint": "~3",
     "@pirxpilot/matcha": "~1",
-    "jshint": "~2",
     "mocha": "~3",
     "polyline-encoded": "^0.0.8",
     "should": "~11"
diff --git a/yarn.lock b/yarn.lock
deleted file mode 100644
index 9b5fb5f..0000000
--- a/yarn.lock
+++ /dev/null
@@ -1,368 +0,0 @@
-# THIS IS AN AUTOGENERATED FILE. DO NOT EDIT THIS FILE DIRECTLY.
-# yarn lockfile v1
-
-
-"@pirxpilot/matcha@~1":
-  version "1.0.1"
-  resolved "https://registry.yarnpkg.com/@pirxpilot/matcha/-/matcha-1.0.1.tgz#41b1ed082205899e0b6235b0f0be96dc5c73e15e"
-  dependencies:
-    commander "~2"
-    v8-argv jkroso/v8-argv
-
-balanced-match@^0.4.1:
-  version "0.4.2"
-  resolved "https://registry.yarnpkg.com/balanced-match/-/balanced-match-0.4.2.tgz#cb3f3e3c732dc0f01ee70b403f302e61d7709838"
-
-brace-expansion@^1.0.0:
-  version "1.1.6"
-  resolved "https://registry.yarnpkg.com/brace-expansion/-/brace-expansion-1.1.6.tgz#7197d7eaa9b87e648390ea61fc66c84427420df9"
-  dependencies:
-    balanced-match "^0.4.1"
-    concat-map "0.0.1"
-
-browser-stdout@1.3.0:
-  version "1.3.0"
-  resolved "https://registry.yarnpkg.com/browser-stdout/-/browser-stdout-1.3.0.tgz#f351d32969d32fa5d7a5567154263d928ae3bd1f"
-
-cli@~1.0.0:
-  version "1.0.1"
-  resolved "https://registry.yarnpkg.com/cli/-/cli-1.0.1.tgz#22817534f24bfa4950c34d532d48ecbc621b8c14"
-  dependencies:
-    exit "0.1.2"
-    glob "^7.1.1"
-
-commander@2.9.0, commander@~2:
-  version "2.9.0"
-  resolved "https://registry.yarnpkg.com/commander/-/commander-2.9.0.tgz#9c99094176e12240cb22d6c5146098400fe0f7d4"
-  dependencies:
-    graceful-readlink ">= 1.0.0"
-
-concat-map@0.0.1:
-  version "0.0.1"
-  resolved "https://registry.yarnpkg.com/concat-map/-/concat-map-0.0.1.tgz#d8a96bd77fd68df7793a73036a3ba0d5405d477b"
-
-console-browserify@1.1.x:
-  version "1.1.0"
-  resolved "https://registry.yarnpkg.com/console-browserify/-/console-browserify-1.1.0.tgz#f0241c45730a9fc6323b206dbf38edc741d0bb10"
-  dependencies:
-    date-now "^0.1.4"
-
-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"
-
-date-now@^0.1.4:
-  version "0.1.4"
-  resolved "https://registry.yarnpkg.com/date-now/-/date-now-0.1.4.tgz#eaf439fd4d4848ad74e5cc7dbef200672b9e345b"
-
-debug@2.2.0:
-  version "2.2.0"
-  resolved "https://registry.yarnpkg.com/debug/-/debug-2.2.0.tgz#f87057e995b1a1f6ae6a4960664137bc56f039da"
-  dependencies:
-    ms "0.7.1"
-
-diff@1.4.0:
-  version "1.4.0"
-  resolved "https://registry.yarnpkg.com/diff/-/diff-1.4.0.tgz#7f28d2eb9ee7b15a97efd89ce63dcfdaa3ccbabf"
-
-dom-serializer@0:
-  version "0.1.0"
-  resolved "https://registry.yarnpkg.com/dom-serializer/-/dom-serializer-0.1.0.tgz#073c697546ce0780ce23be4a28e293e40bc30c82"
-  dependencies:
-    domelementtype "~1.1.1"
-    entities "~1.1.1"
-
-domelementtype@1:
-  version "1.3.0"
-  resolved "https://registry.yarnpkg.com/domelementtype/-/domelementtype-1.3.0.tgz#b17aed82e8ab59e52dd9c19b1756e0fc187204c2"
-
-domelementtype@~1.1.1:
-  version "1.1.3"
-  resolved "https://registry.yarnpkg.com/domelementtype/-/domelementtype-1.1.3.tgz#bd28773e2642881aec51544924299c5cd822185b"
-
-domhandler@2.3:
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-  resolved "https://registry.yarnpkg.com/domhandler/-/domhandler-2.3.0.tgz#2de59a0822d5027fabff6f032c2b25a2a8abe738"
-  dependencies:
-    domelementtype "1"
-
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-  resolved "https://registry.yarnpkg.com/domutils/-/domutils-1.5.1.tgz#dcd8488a26f563d61079e48c9f7b7e32373682cf"
-  dependencies:
-    dom-serializer "0"
-    domelementtype "1"
-
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-  resolved "https://registry.yarnpkg.com/entities/-/entities-1.0.0.tgz#b2987aa3821347fcde642b24fdfc9e4fb712bf26"
-
-entities@~1.1.1:
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-  resolved "https://registry.yarnpkg.com/entities/-/entities-1.1.1.tgz#6e5c2d0a5621b5dadaecef80b90edfb5cd7772f0"
-
-escape-string-regexp@1.0.5:
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-  resolved "https://registry.yarnpkg.com/escape-string-regexp/-/escape-string-regexp-1.0.5.tgz#1b61c0562190a8dff6ae3bb2cf0200ca130b86d4"
-
-exit@0.1.2, exit@0.1.x:
-  version "0.1.2"
-  resolved "https://registry.yarnpkg.com/exit/-/exit-0.1.2.tgz#0632638f8d877cc82107d30a0fff1a17cba1cd0c"
-
-fs.realpath@^1.0.0:
-  version "1.0.0"
-  resolved "https://registry.yarnpkg.com/fs.realpath/-/fs.realpath-1.0.0.tgz#1504ad2523158caa40db4a2787cb01411994ea4f"
-
-glob@7.0.5:
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-  resolved "https://registry.yarnpkg.com/glob/-/glob-7.0.5.tgz#b4202a69099bbb4d292a7c1b95b6682b67ebdc95"
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-    inflight "^1.0.4"
-    inherits "2"
-    minimatch "^3.0.2"
-    once "^1.3.0"
-    path-is-absolute "^1.0.0"
-
-glob@^7.1.1:
-  version "7.1.1"
-  resolved "https://registry.yarnpkg.com/glob/-/glob-7.1.1.tgz#805211df04faaf1c63a3600306cdf5ade50b2ec8"
-  dependencies:
-    fs.realpath "^1.0.0"
-    inflight "^1.0.4"
-    inherits "2"
-    minimatch "^3.0.2"
-    once "^1.3.0"
-    path-is-absolute "^1.0.0"
-
-"graceful-readlink@>= 1.0.0":
-  version "1.0.1"
-  resolved "https://registry.yarnpkg.com/graceful-readlink/-/graceful-readlink-1.0.1.tgz#4cafad76bc62f02fa039b2f94e9a3dd3a391a725"
-
-growl@1.9.2:
-  version "1.9.2"
-  resolved "https://registry.yarnpkg.com/growl/-/growl-1.9.2.tgz#0ea7743715db8d8de2c5ede1775e1b45ac85c02f"
-
-has-flag@^1.0.0:
-  version "1.0.0"
-  resolved "http://registry.npmjs.org/has-flag/-/has-flag-1.0.0.tgz#9d9e793165ce017a00f00418c43f942a7b1d11fa"
-
-htmlparser2@3.8.x:
-  version "3.8.3"
-  resolved "https://registry.yarnpkg.com/htmlparser2/-/htmlparser2-3.8.3.tgz#996c28b191516a8be86501a7d79757e5c70c1068"
-  dependencies:
-    domelementtype "1"
-    domhandler "2.3"
-    domutils "1.5"
-    entities "1.0"
-    readable-stream "1.1"
-
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-  version "1.0.6"
-  resolved "https://registry.yarnpkg.com/inflight/-/inflight-1.0.6.tgz#49bd6331d7d02d0c09bc910a1075ba8165b56df9"
-  dependencies:
-    once "^1.3.0"
-    wrappy "1"
-
-inherits@2, inherits@~2.0.1:
-  version "2.0.3"
-  resolved "https://registry.yarnpkg.com/inherits/-/inherits-2.0.3.tgz#633c2c83e3da42a502f52466022480f4208261de"
-
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-  version "0.0.1"
-  resolved "https://registry.yarnpkg.com/isarray/-/isarray-0.0.1.tgz#8a18acfca9a8f4177e09abfc6038939b05d1eedf"
-
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-  resolved "https://registry.yarnpkg.com/jshint/-/jshint-2.9.4.tgz#5e3ba97848d5290273db514aee47fe24cf592934"
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-    console-browserify "1.1.x"
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-    minimatch "~3.0.2"
-    shelljs "0.3.x"
-    strip-json-comments "1.0.x"
-
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-  resolved "https://registry.yarnpkg.com/json3/-/json3-3.3.2.tgz#3c0434743df93e2f5c42aee7b19bcb483575f4e1"
-
-lodash._baseassign@^3.0.0:
-  version "3.2.0"
-  resolved "https://registry.yarnpkg.com/lodash._baseassign/-/lodash._baseassign-3.2.0.tgz#8c38a099500f215ad09e59f1722fd0c52bfe0a4e"
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-    lodash._basecopy "^3.0.0"
-    lodash.keys "^3.0.0"
-
-lodash._basecopy@^3.0.0:
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-  resolved "https://registry.yarnpkg.com/lodash._basecopy/-/lodash._basecopy-3.0.1.tgz#8da0e6a876cf344c0ad8a54882111dd3c5c7ca36"
-
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-  resolved "https://registry.yarnpkg.com/lodash._basecreate/-/lodash._basecreate-3.0.3.tgz#1bc661614daa7fc311b7d03bf16806a0213cf821"
-
-lodash._getnative@^3.0.0:
-  version "3.9.1"
-  resolved "https://registry.yarnpkg.com/lodash._getnative/-/lodash._getnative-3.9.1.tgz#570bc7dede46d61cdcde687d65d3eecbaa3aaff5"
-
-lodash._isiterateecall@^3.0.0:
-  version "3.0.9"
-  resolved "https://registry.yarnpkg.com/lodash._isiterateecall/-/lodash._isiterateecall-3.0.9.tgz#5203ad7ba425fae842460e696db9cf3e6aac057c"
-
-lodash.create@3.1.1:
-  version "3.1.1"
-  resolved "https://registry.yarnpkg.com/lodash.create/-/lodash.create-3.1.1.tgz#d7f2849f0dbda7e04682bb8cd72ab022461debe7"
-  dependencies:
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-    lodash._basecreate "^3.0.0"
-    lodash._isiterateecall "^3.0.0"
-
-lodash.isarguments@^3.0.0:
-  version "3.1.0"
-  resolved "https://registry.yarnpkg.com/lodash.isarguments/-/lodash.isarguments-3.1.0.tgz#2f573d85c6a24289ff00663b491c1d338ff3458a"
-
-lodash.isarray@^3.0.0:
-  version "3.0.4"
-  resolved "https://registry.yarnpkg.com/lodash.isarray/-/lodash.isarray-3.0.4.tgz#79e4eb88c36a8122af86f844aa9bcd851b5fbb55"
-
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-  resolved "https://registry.yarnpkg.com/lodash.keys/-/lodash.keys-3.1.2.tgz#4dbc0472b156be50a0b286855d1bd0b0c656098a"
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-    lodash.isarguments "^3.0.0"
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-
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-
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-
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