diff --git a/shrinkwrap.yaml b/shrinkwrap.yaml
index 41cd200e3c..6e57b71c22 100644
--- a/shrinkwrap.yaml
+++ b/shrinkwrap.yaml
@@ -1,11 +1,11 @@
 dependencies:
   '@pnpm/resolver-base': 1.0.0
-  '@types/js-yaml': 3.10.1
-  '@types/node': 9.4.6
-  '@types/ramda': 0.25.18
-  dependency-path: 1.2.0
+  '@types/js-yaml': 3.11.1
+  '@types/node': 9.6.4
+  '@types/ramda': 0.25.21
+  dependency-path: 1.2.1
   get-npm-tarball-url: 2.0.1
-  js-yaml: 3.10.0
+  js-yaml: 3.11.0
   load-yaml-file: 0.1.0
   mkdirp-promise: 5.0.1
   pnpm-shrinkwrap: 'link:../__package_previews__/pnpm-shrinkwrap/pnpm-shrinkwrap'
@@ -15,21 +15,21 @@ dependencies:
   write-file-atomic: 2.3.0
 devDependencies:
   '@pnpm/logger': 1.0.1
-  '@types/tape': 4.2.31
+  '@types/tape': 4.2.32
   package-preview: 1.0.5
   rimraf: 2.6.2
   tape: 4.9.0
   tempy: 0.2.1
-  ts-node: 5.0.0
+  ts-node: 5.0.1
   tslint: 5.9.1
-  typescript: 2.7.2
+  typescript: 2.8.1
   yaml-tag: github.com/zkochan/yaml-tag/5dc60b313a917434585d02031c4fd4c326a751c1
 packages:
   /@pnpm/exec/1.1.4:
     dependencies:
-      '@pnpm/self-installer': 2.0.1
-      '@types/got': 7.1.7
-      '@types/node': 9.4.6
+      '@pnpm/self-installer': 2.0.2
+      '@types/got': 7.1.8
+      '@types/node': 9.6.4
       command-exists: 1.2.2
       cross-spawn: 5.1.0
     dev: true
@@ -39,7 +39,7 @@ packages:
       integrity: sha512-sYJOXPxpQxFcTSACFRFCuIQdnZLNaOgTHGF+CQNYlKnlc2ZnmEW+lAZVTc0hJSU+8mnTY7ei39MbYpI5q+li+w==
   /@pnpm/logger/1.0.1:
     dependencies:
-      '@types/node': 9.4.6
+      '@types/node': 9.6.4
       bole: 3.0.2
       ndjson: 1.5.0
     dev: true
@@ -55,59 +55,59 @@ packages:
       node: '>=4'
     resolution:
       integrity: sha512-+y47No75LZFnkN7VAnoEtkIzDgOuc8ZT4QjyhuNIBVLx4oqFa/R16DpSyRjmaTZMCSREXunObULKL/hoLipNDA==
-  /@pnpm/self-installer/2.0.1:
+  /@pnpm/self-installer/2.0.2:
     dev: true
     engines:
       node: '>=4'
     resolution:
-      integrity: sha512-ZnWWMPCCewTSI+1cNrRNCAGsVsdzFvN1+WU8GkjtvwAW2lnBpIVZm4MHQBI3basFYn7DWCs4lBihGuH1DiCAAg==
+      integrity: sha1-hbuHZMfM0iOZn2FCGQBixibo8oc=
   /@pnpm/types/1.7.0:
     dev: false
     resolution:
       integrity: sha512-pn7g4uxcofWTNG/cxmKvkMK2lxr4OUIhrQDrEVYEdVhW0WkWztsHkFrYjFgfNzPbYu3ITlB3T6aSVjCoJQTOlw==
-  /@types/fs-extra/5.0.0:
+  /@types/fs-extra/5.0.1:
     dependencies:
-      '@types/node': 9.4.6
+      '@types/node': 9.6.4
     dev: true
     resolution:
-      integrity: sha512-qtxDULQKUenuaDLW003CgC+0T0eiAfH3BrH+vSt87GLzbz5EZ6Ox6mv9rMttvhDOatbb9nYh0E1m7ydoYwUrAg==
-  /@types/got/7.1.7:
+      integrity: sha512-h3wnflb+jMTipvbbZnClgA2BexrT4w0GcfoCz5qyxd0IRsbqhLSyesM6mqZTAnhbVmhyTm5tuxfRu9R+8l+lGw==
+  /@types/got/7.1.8:
     dependencies:
-      '@types/node': 9.4.6
+      '@types/node': 9.6.4
     dev: true
     resolution:
-      integrity: sha512-quhlNPGIkaRyO4PnEuP9pEkUPktjfrvPESENGOhiEzgOUNbunETSQXY5bkZY+Bb/J9V5p/f50Rh1eDklD4Z2FQ==
-  /@types/js-yaml/3.10.1:
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+  /@types/js-yaml/3.11.1:
     dev: false
     resolution:
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     dev: true
     resolution:
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   /@types/mz/0.0.32:
     dependencies:
-      '@types/node': 9.4.6
+      '@types/node': 9.6.4
     dev: true
     resolution:
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-  /@types/ramda/0.25.18:
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+  /@types/ramda/0.25.21:
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     resolution:
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     dev: false
     resolution:
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-  /@types/tape/4.2.31:
+  /@types/tape/4.2.32:
     dependencies:
-      '@types/node': 9.4.6
+      '@types/node': 9.6.4
     dev: true
     resolution:
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     dev: true
     resolution:
@@ -124,14 +124,14 @@ packages:
       node: '>=0.10.0'
     resolution:
       integrity: sha1-tDLdM1i2NM914eRmQ2gkBTPB3b4=
-  /ansi-styles/3.2.0:
+  /ansi-styles/3.2.1:
     dependencies:
       color-convert: 1.9.1
     dev: true
     engines:
       node: '>=4'
     resolution:
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   /any-promise/1.3.0:
     resolution:
       integrity: sha1-q8av7tzqUugJzcA3au0845Y10X8=
@@ -169,12 +169,13 @@ packages:
       node: '>= 0.4'
     resolution:
       integrity: sha1-EQHpVE9KdrG8OybUUsqW16NeeXg=
-  /bl/1.2.1:
+  /bl/1.2.2:
     dependencies:
-      readable-stream: 2.3.4
+      readable-stream: 2.3.6
+      safe-buffer: 5.1.1
     dev: true
     resolution:
-      integrity: sha1-ysMo977kVzDUBLaSID/LWQ4XLV4=
+      integrity: sha512-e8tQYnZodmebYDWGH7KMRvtzKXaJHx3BbilrgZCfvyLUYdKpK1t5PSPmpkny/SgiTSCnjfLW7v5rlONXVFkQEA==
   /bole/3.0.2:
     dependencies:
       fast-safe-stringify: 1.1.13
@@ -194,10 +195,14 @@ packages:
     dev: true
     resolution:
       integrity: sha1-uzX4pRn2AOD6a4SFJByXnQFB+y0=
+  /buffer-from/1.0.0:
+    dev: true
+    resolution:
+      integrity: sha512-83apNb8KK0Se60UE1+4Ukbe3HbfELJ6UlI4ldtOGs7So4KD26orJM8hIY9lxdzP+UpItH1Yh/Y8GUvNFWFFRxA==
   /buffer/3.6.0:
     dependencies:
       base64-js: 0.0.8
-      ieee754: 1.1.8
+      ieee754: 1.1.11
       isarray: 1.0.0
     dev: true
     resolution:
@@ -211,7 +216,7 @@ packages:
   /bzip2-maybe/1.0.0:
     dependencies:
       is-bzip2: 1.0.0
-      peek-stream: 1.1.2
+      peek-stream: 1.1.3
       pumpify: 1.4.0
       through2: 2.0.3
       unbzip2-stream: 1.2.5
@@ -246,16 +251,16 @@ packages:
       node: '>=0.10.0'
     resolution:
       integrity: sha1-qBFcVeSnAv5NFQq9OHKCKn4J/Jg=
-  /chalk/2.3.1:
+  /chalk/2.3.2:
     dependencies:
-      ansi-styles: 3.2.0
+      ansi-styles: 3.2.1
       escape-string-regexp: 1.0.5
-      supports-color: 5.2.0
+      supports-color: 5.3.0
     dev: true
     engines:
       node: '>=4'
     resolution:
-      integrity: sha512-QUU4ofkDoMIVO7hcx1iPTISs88wsO8jA92RQIm4JAwZvFGGAV2hSAA1NX7oVj2Ej2Q6NDTcRDjPTFrMCRZoJ6g==
+      integrity: sha512-ZM4j2/ld/YZDc3Ma8PgN7gyAk+kHMMMyzLNryCPGhWrsfAuDVeuid5bpRFTDgMH9JBK2lA4dyyAkkZYF/WcqDQ==
   /chownr/1.0.1:
     dev: true
     resolution:
@@ -274,10 +279,10 @@ packages:
     dev: true
     resolution:
       integrity: sha1-EoGcZPr5VEbsCuB/5sr7brNwiyI=
-  /commander/2.14.1:
+  /commander/2.15.1:
     dev: true
     resolution:
-      integrity: sha512-+YR16o3rK53SmWHU3rEM3tPAh2rwb1yPcQX5irVn7mb0gXbwuCCrnkbV5+PBfETdfg1vui07nM6PCG1zndcjQw==
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   /concat-map/0.0.1:
     resolution:
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@@ -287,13 +292,13 @@ packages:
       integrity: sha1-tf1UIgqivFq1eqtxQMlAdUUDwac=
   /cross-spawn/5.1.0:
     dependencies:
-      lru-cache: 4.1.1
+      lru-cache: 4.1.2
       shebang-command: 1.2.0
       which: 1.3.0
     dev: true
     resolution:
       integrity: sha1-6L0O/uWPz/b4+UUQoKVUu/ojVEk=
-  /cross-spawn/6.0.4:
+  /cross-spawn/6.0.5:
     dependencies:
       nice-try: 1.0.4
       path-key: 2.0.1
@@ -304,7 +309,7 @@ packages:
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       node: '>=4.8'
     resolution:
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   /crypto-random-string/1.0.0:
     dev: true
     engines:
@@ -358,35 +363,37 @@ packages:
     dev: true
     resolution:
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-  /dependency-path/1.2.0:
+  /dependency-path/1.2.1:
     dependencies:
       '@types/semver': 5.5.0
       encode-registry: 1.1.0
       semver: 5.5.0
     dev: false
+    engines:
+      node: '>=4'
     resolution:
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     engines:
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     resolution:
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-  /diff/3.4.0:
+  /diff/3.5.0:
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-  /duplexify/3.5.3:
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+  /duplexify/3.5.4:
     dependencies:
       end-of-stream: 1.4.1
       inherits: 2.0.3
-      readable-stream: 2.3.4
+      readable-stream: 2.3.6
       stream-shift: 1.0.0
     dev: true
     resolution:
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   /encode-registry/1.1.0:
     dependencies:
       mem: 3.0.0
@@ -407,7 +414,7 @@ packages:
     dev: true
     resolution:
       integrity: sha1-+FWobOYa3E6GIcPNoh56dhLDqNw=
-  /es-abstract/1.10.0:
+  /es-abstract/1.11.0:
     dependencies:
       es-to-primitive: 1.1.1
       function-bind: 1.1.1
@@ -417,7 +424,7 @@ packages:
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       node: '>= 0.4'
     resolution:
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   /es-to-primitive/1.1.1:
     dependencies:
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@@ -516,7 +523,7 @@ packages:
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       is-deflate: 1.0.0
       is-gzip: 1.0.0
-      peek-stream: 1.1.2
+      peek-stream: 1.1.3
       pumpify: 1.4.0
       through2: 2.0.3
     dev: true
@@ -543,14 +550,16 @@ packages:
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     resolution:
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-  /hosted-git-info/2.5.0:
+  /hosted-git-info/2.6.0:
+    dev: true
+    engines:
+      node: '>=4'
+    resolution:
+      integrity: sha512-lIbgIIQA3lz5XaB6vxakj6sDHADJiZadYEJB+FgA+C4nubM1NwcuvUr9EJPmnH1skZqpqUzWborWo8EIUi0Sdw==
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     resolution:
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-  /ieee754/1.1.8:
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-    resolution:
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-  /js-yaml/3.10.0:
+  /js-yaml/3.11.0:
     dependencies:
       argparse: 1.0.10
       esprima: 4.0.0
     resolution:
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-  /json-parse-better-errors/1.0.1:
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+  /json-parse-better-errors/1.0.2:
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@@ -687,7 +696,7 @@ packages:
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     dependencies:
       graceful-fs: 4.1.11
-      js-yaml: 3.10.0
+      js-yaml: 3.11.0
       pify: 2.3.0
       strip-bom: 3.0.0
     dev: false
@@ -713,13 +722,13 @@ packages:
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-  /lru-cache/4.1.1:
+  /lru-cache/4.1.2:
     dependencies:
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       yallist: 2.1.2
     dev: true
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     dependencies:
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@@ -837,10 +846,10 @@ packages:
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   /normalize-package-data/2.4.0:
     dependencies:
-      hosted-git-info: 2.5.0
+      hosted-git-info: 2.6.0
       is-builtin-module: 1.0.0
       semver: 5.5.0
-      validate-npm-package-license: 3.0.1
+      validate-npm-package-license: 3.0.3
     dev: true
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@@ -866,7 +875,7 @@ packages:
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     dependencies:
       define-properties: 1.1.2
-      es-abstract: 1.10.0
+      es-abstract: 1.11.0
     dev: false
     engines:
       node: '>= 0.8'
@@ -908,12 +917,12 @@ packages:
   /package-preview/1.0.5:
     dependencies:
       '@pnpm/exec': 1.1.4
-      '@types/fs-extra': 5.0.0
+      '@types/fs-extra': 5.0.1
       '@types/load-json-file': 2.0.7
       '@types/mz': 0.0.32
-      '@types/node': 9.4.6
+      '@types/node': 9.6.4
       '@types/write-json-file': 2.2.1
-      cross-spawn: 6.0.4
+      cross-spawn: 6.0.5
       find-down: 0.1.4
       fs-extra: 5.0.0
       graceful-fs: 4.1.11
@@ -922,7 +931,7 @@ packages:
       mz: 2.7.0
       rimraf-then: 1.0.1
       symlink-dir: 1.1.2
-      unpack-stream: 3.0.1
+      unpack-stream: 3.0.2
       write-json-file: 2.3.0
     dev: true
     engines:
@@ -936,7 +945,7 @@ packages:
   /parse-json/4.0.0:
     dependencies:
       error-ex: 1.3.1
-      json-parse-better-errors: 1.0.1
+      json-parse-better-errors: 1.0.2
     dev: true
     engines:
       node: '>=4'
@@ -971,13 +980,14 @@ packages:
       node: '>=4'
     resolution:
       integrity: sha512-T2ZUsdZFHgA3u4e5PfPbjd7HDDpxPnQb5jN0SrDsjNSuVXHJqtwTnWqG0B1jZrgmJ/7lj1EmVIByWt1gxGkWvg==
-  /peek-stream/1.1.2:
+  /peek-stream/1.1.3:
     dependencies:
-      duplexify: 3.5.3
+      buffer-from: 1.0.0
+      duplexify: 3.5.4
       through2: 2.0.3
     dev: true
     resolution:
-      integrity: sha1-l+t2NlvP2MieKH9VyLadTD6bzFI=
+      integrity: sha512-FhJ+YbOSBb9/rIl2ZeE/QHEsWn7PqNYt8ARAY3kIgNGOk13g9FGyIY6JIl/xB/3TFRVoTv5as0l11weORrTekA==
   /pify/2.3.0:
     dev: false
     engines:
@@ -1014,7 +1024,7 @@ packages:
       integrity: sha512-ruPMNRkN3MHP1cWJc9OWr+T/xDP0jhXYCLfJcBuX54hhfIBnaQmAUMfDcG4DM5UMWByBbJY69QSphm3jtDKIkA==
   /pumpify/1.4.0:
     dependencies:
-      duplexify: 3.5.3
+      duplexify: 3.5.4
       inherits: 2.0.3
       pump: 2.0.1
     dev: true
@@ -1049,18 +1059,18 @@ packages:
       node: '>=4'
     resolution:
       integrity: sha1-nLxoaXj+5l0WwA4rGcI3/Pbjg4k=
-  /readable-stream/2.3.4:
+  /readable-stream/2.3.6:
     dependencies:
       core-util-is: 1.0.2
       inherits: 2.0.3
       isarray: 1.0.0
       process-nextick-args: 2.0.0
       safe-buffer: 5.1.1
-      string_decoder: 1.0.3
+      string_decoder: 1.1.1
       util-deprecate: 1.0.2
     dev: true
     resolution:
-      integrity: sha512-vuYxeWYM+fde14+rajzqgeohAI7YoJcHE7kXDAc4Nk0EbuKnJfqtY9YtRkLo/tqkuF7MsBQRhPnPeyjYITp3ZQ==
+      integrity: sha512-tQtKA9WIAhBF3+VLAseyMqZeBjW0AHJoxOtYqSUZNJxauErmLbVm2FW1y+J/YA9dUrAC39ITejlZWhVIwawkKw==
   /redent/2.0.0:
     dependencies:
       indent-string: 3.2.0
@@ -1076,6 +1086,12 @@ packages:
     dev: true
     resolution:
       integrity: sha512-hgoSGrc3pjzAPHNBg+KnFcK2HwlHTs/YrAGUr6qgTVUZmXv1UEXXl0bZNBKMA9fud6lRYFdPGz0xXxycPzmmiw==
+  /resolve/1.7.0:
+    dependencies:
+      path-parse: 1.0.5
+    dev: true
+    resolution:
+      integrity: sha512-QdgZ5bjR1WAlpLaO5yHepFvC+o3rCr6wpfE2tpJNMkXdulf2jKomQBdNRQITF3ZKHNlT71syG98yQP03gasgnA==
   /resumer/0.0.0:
     dependencies:
       through: 2.3.8
@@ -1125,32 +1141,40 @@ packages:
       node: '>=4'
     resolution:
       integrity: sha1-ZYU1WEhh7JfXMNbPQYIuH1ZoQSg=
-  /source-map-support/0.5.3:
+  /source-map-support/0.5.4:
     dependencies:
       source-map: 0.6.1
     dev: true
     resolution:
-      integrity: sha512-eKkTgWYeBOQqFGXRfKabMFdnWepo51vWqEdoeikaEPFiJC7MCU5j2h4+6Q8npkZTeLGbSyecZvRxiSoWl3rh+w==
+      integrity: sha512-PETSPG6BjY1AHs2t64vS2aqAgu6dMIMXJULWFBGbh2Gr8nVLbCFDo6i/RMMvviIQ2h1Z8+5gQhVKSn2je9nmdg==
   /source-map/0.6.1:
     dev: true
     engines:
       node: '>=0.10.0'
     resolution:
       integrity: sha512-UjgapumWlbMhkBgzT7Ykc5YXUT46F0iKu8SGXq0bcwP5dz/h0Plj6enJqjz1Zbq2l5WaqYnrVbwWOWMyF3F47g==
-  /spdx-correct/1.0.2:
+  /spdx-correct/3.0.0:
     dependencies:
-      spdx-license-ids: 1.2.2
+      spdx-expression-parse: 3.0.0
+      spdx-license-ids: 3.0.0
     dev: true
     resolution:
-      integrity: sha1-SzBz2TP/UfORLwOsVRlJikFQ20A=
-  /spdx-expression-parse/1.0.4:
+      integrity: sha512-N19o9z5cEyc8yQQPukRCZ9EUmb4HUpnrmaL/fxS2pBo2jbfcFRVuFZ/oFC+vZz0MNNk0h80iMn5/S6qGZOL5+g==
+  /spdx-exceptions/2.1.0:
     dev: true
     resolution:
-      integrity: sha1-m98vIOH0DtRH++JzJmGR/O1RYmw=
-  /spdx-license-ids/1.2.2:
+      integrity: sha512-4K1NsmrlCU1JJgUrtgEeTVyfx8VaYea9J9LvARxhbHtVtohPs/gFGG5yy49beySjlIMhhXZ4QqujIZEfS4l6Cg==
+  /spdx-expression-parse/3.0.0:
+    dependencies:
+      spdx-exceptions: 2.1.0
+      spdx-license-ids: 3.0.0
     dev: true
     resolution:
-      integrity: sha1-yd96NCRZSt5r0RkA1ZZpbcBrrFc=
+      integrity: sha512-Yg6D3XpRD4kkOmTpdgbUiEJFKghJH03fiC1OPll5h/0sO6neh2jqRDVHOQ4o/LMea0tgCkbMgea5ip/e+MkWyg==
+  /spdx-license-ids/3.0.0:
+    dev: true
+    resolution:
+      integrity: sha512-2+EPwgbnmOIl8HjGBXXMd9NAu02vLjOO1nWw4kmeRDFyHn+M/ETfHxQUK0oXg8ctgVnl9t3rosNVsZ1jG61nDA==
   /split2/2.2.0:
     dependencies:
       through2: 2.0.3
@@ -1160,12 +1184,12 @@ packages:
   /sprintf-js/1.0.3:
     resolution:
       integrity: sha1-BOaSb2YolTVPPdAVIDYzuFcpfiw=
-  /ssri/5.2.4:
+  /ssri/5.3.0:
     dependencies:
       safe-buffer: 5.1.1
     dev: true
     resolution:
-      integrity: sha512-UnEAgMZa15973iH7cUi0AHjJn1ACDIkaMyZILoqwN6yzt+4P81I8tBc5Hl+qwi5auMplZtPQsHrPBR5vJLcQtQ==
+      integrity: sha512-XRSIPqLij52MtgoQavH/x/dU1qVKtWUAAZeOHsR9c2Ddi4XerFy3mc1alf+dLJKl9EUIm/Ht+EowFkTUOA6GAQ==
   /stream-shift/1.0.0:
     dev: true
     resolution:
@@ -1173,19 +1197,19 @@ packages:
   /string.prototype.trim/1.1.2:
     dependencies:
       define-properties: 1.1.2
-      es-abstract: 1.10.0
+      es-abstract: 1.11.0
       function-bind: 1.1.1
     dev: true
     engines:
       node: '>= 0.4'
     resolution:
       integrity: sha1-0E3iyJ4Tf019IG8Ia17S+ua+jOo=
-  /string_decoder/1.0.3:
+  /string_decoder/1.1.1:
     dependencies:
       safe-buffer: 5.1.1
     dev: true
     resolution:
-      integrity: sha512-4AH6Z5fzNNBcH+6XDMfA/BTt87skxqJlO0lAh3Dker5zThcAxG6mKz+iGu308UKoPPQ8Dcqx/4JhujzltRa+hQ==
+      integrity: sha512-n/ShnvDi6FHbbVfviro+WojiFzv+s8MPMHBczVePfUpDJLwoLT0ht1l4YwBCbi8pJAveEEdnkHyPyTP/mzRfwg==
   /strip-ansi/3.0.1:
     dependencies:
       ansi-regex: 2.1.1
@@ -1211,18 +1235,18 @@ packages:
       node: '>=0.8.0'
     resolution:
       integrity: sha1-U10EXOa2Nj+kARcIRimZXp3zJMc=
-  /supports-color/5.2.0:
+  /supports-color/5.3.0:
     dependencies:
       has-flag: 3.0.0
     dev: true
     engines:
       node: '>=4'
     resolution:
-      integrity: sha512-F39vS48la4YvTZUPVeTqsjsFNrvcMwrV3RLZINsmHo+7djCvuUzSIeXOnZ5hmjef4bajL1dNccN+tg5XAliO5Q==
+      integrity: sha512-0aP01LLIskjKs3lq52EC0aGBAJhLq7B2Rd8HC/DR/PtNNpcLilNmHC12O+hu0usQpo7wtHNRqtrhBwtDb0+dNg==
   /symlink-dir/1.1.2:
     dependencies:
       '@types/mz': 0.0.32
-      '@types/node': 9.4.6
+      '@types/node': 9.6.4
       graceful-fs: 4.1.11
       is-windows: 1.0.2
       mkdirp-promise: 5.0.1
@@ -1261,9 +1285,9 @@ packages:
       integrity: sha512-I9rb6v7mjWLtOfCau9eH5L7sLJyU2BnxtEZRQ5Mt+eRKmf1F0ohXmT/Jc3fr52kDvjJ/HV5MH3soQfPL5bQ0Yg==
   /tar-stream/1.5.5:
     dependencies:
-      bl: 1.2.1
+      bl: 1.2.2
       end-of-stream: 1.4.1
-      readable-stream: 2.3.4
+      readable-stream: 2.3.6
       xtend: 4.0.1
     dev: true
     engines:
@@ -1305,7 +1329,7 @@ packages:
       integrity: sha1-DdTJ/6q8NXlgsbckEV1+Doai4fU=
   /through2/2.0.3:
     dependencies:
-      readable-stream: 2.3.4
+      readable-stream: 2.3.6
       xtend: 4.0.1
     dev: true
     resolution:
@@ -1316,21 +1340,21 @@ packages:
       node: '>=4'
     resolution:
       integrity: sha1-tAPQuRvlDDMd/EuC7s6yLD3hbSA=
-  /ts-node/5.0.0:
+  /ts-node/5.0.1:
     dependencies:
       arrify: 1.0.1
-      chalk: 2.3.1
-      diff: 3.4.0
+      chalk: 2.3.2
+      diff: 3.5.0
       make-error: 1.3.4
       minimist: 1.2.0
       mkdirp: 0.5.1
-      source-map-support: 0.5.3
+      source-map-support: 0.5.4
       yn: 2.0.0
     dev: true
     engines:
       node: '>=4.2.0'
     resolution:
-      integrity: sha512-mlSim/sQS1s5iT3KZEKXRaqsGC7xM2QoxkrhfznZJyou18dl47PTnY7/KMmbGqiVoQrO9Hk53CYpcychF5TNrQ==
+      integrity: sha512-XK7QmDcNHVmZkVtkiwNDWiERRHPyU8nBqZB1+iv2UhOG0q3RQ9HsZ2CMqISlFbxjrYFGfG2mX7bW4dAyxBVzUw==
   /tslib/1.9.0:
     dev: true
     resolution:
@@ -1339,16 +1363,16 @@ packages:
     dependencies:
       babel-code-frame: 6.26.0
       builtin-modules: 1.1.1
-      chalk: 2.3.1
-      commander: 2.14.1
-      diff: 3.4.0
+      chalk: 2.3.2
+      commander: 2.15.1
+      diff: 3.5.0
       glob: 7.1.2
-      js-yaml: 3.10.0
+      js-yaml: 3.11.0
       minimatch: 3.0.4
-      resolve: 1.5.0
+      resolve: 1.7.0
       semver: 5.5.0
       tslib: 1.9.0
-      tsutils: 2.21.1
+      tsutils: 2.26.1
     dev: true
     engines:
       node: '>=4.8.0'
@@ -1356,20 +1380,20 @@ packages:
       typescript: '>=2.1.0 || >=2.1.0-dev || >=2.2.0-dev || >=2.3.0-dev || >=2.4.0-dev || >=2.5.0-dev || >=2.6.0-dev || >=2.7.0-dev || >=2.8.0-dev'
     resolution:
       integrity: sha1-ElX4ej/1frCw4fDmEKi0dIBGya4=
-  /tsutils/2.21.1:
+  /tsutils/2.26.1:
     dependencies:
       tslib: 1.9.0
     dev: true
     peerDependencies:
-      typescript: '>=2.1.0 || >=2.1.0-dev || >=2.2.0-dev || >=2.3.0-dev || >=2.4.0-dev || >=2.5.0-dev || >=2.6.0-dev || >=2.7.0-dev || >=2.8.0-dev || >=2.9.0-dev'
+      typescript: '>=2.1.0 || >=2.1.0-dev || >=2.2.0-dev || >=2.3.0-dev || >=2.4.0-dev || >=2.5.0-dev || >=2.6.0-dev || >=2.7.0-dev || >=2.8.0-dev || >=2.9.0-dev || >= 2.10.0-dev'
     resolution:
-      integrity: sha512-heMkdeQ9iUc90ynfiNo5Y+GXrEEGy86KMvnSTfHO+Q40AuNQ1lZGXcv58fuU9XTUxI0V7YIN9xPN+CO9b1Gn3w==
-  /typescript/2.7.2:
+      integrity: sha512-bnm9bcjOqOr1UljleL94wVCDlpa6KjfGaTkefeLch4GRafgDkROxPizbB/FxTEdI++5JqhxczRy/Qub0syNqZA==
+  /typescript/2.8.1:
     dev: true
     engines:
       node: '>=4.2.0'
     resolution:
-      integrity: sha512-p5TCYZDAO0m4G344hD+wx/LATebLWZNkkh2asWUFqSsD2OrDNhbAHuSjobrmsUmdzjJjEeZVU9g1h3O6vpstnw==
+      integrity: sha512-Ao/f6d/4EPLq0YwzsQz8iXflezpTkQzqAyenTiw4kCUGr1uPiFLC3+fZ+gMZz6eeI/qdRUqvC+HxIJzUAzEFdg==
   /unbzip2-stream/1.2.5:
     dependencies:
       buffer: 3.6.0
@@ -1389,17 +1413,17 @@ packages:
     dev: true
     resolution:
       integrity: sha1-+nG63UQ3r0wUiEHjs7Fl+enlkLc=
-  /unpack-stream/3.0.1:
+  /unpack-stream/3.0.2:
     dependencies:
-      '@types/node': 9.4.6
+      '@types/node': 9.6.4
       decompress-maybe: 1.0.0
-      ssri: 5.2.4
+      ssri: 5.3.0
       tar-fs: 1.16.0
     dev: true
     engines:
       node: '>=4'
     resolution:
-      integrity: sha512-yaG8wkdx7b9Cza2GGQ6YleqxLZwPaNsGYp9zJY61nZgRjl5ATXpfHaZzE1joL4/PlUu8rQiDV4bApqB2iPwz6g==
+      integrity: sha512-mdQv3N9fkxG04/4G8HLg3Q/whJscMTUikRQU2pTr4ISU9t59xoRGUEeqpUwpj78jZUPB7LN6oabkyZJ574MleA==
   /util-deprecate/1.0.2:
     dev: true
     resolution:
@@ -1411,13 +1435,13 @@ packages:
     dev: false
     resolution:
       integrity: sha512-i+6qA2MPhvoKLuxnJNpXAGhg7HphQOSUq2LKMZD0m15EiskXUkMvKdF4Uui0WYeCUGea+o2cw/ZuwehtfsrNkA==
-  /validate-npm-package-license/3.0.1:
+  /validate-npm-package-license/3.0.3:
     dependencies:
-      spdx-correct: 1.0.2
-      spdx-expression-parse: 1.0.4
+      spdx-correct: 3.0.0
+      spdx-expression-parse: 3.0.0
     dev: true
     resolution:
-      integrity: sha1-KAS6vnEq0zeUWaz74kdGqywwP7w=
+      integrity: sha512-63ZOUnL4SIXj4L0NixR3L1lcjO38crAbgrTpl28t8jjrfuiOBL5Iygm+60qPs/KsZGzPNg6Smnc/oY16QTjF0g==
   /which/1.3.0:
     dependencies:
       isexe: 2.0.0
@@ -1465,10 +1489,11 @@ packages:
       integrity: sha1-5a2ryKz0CPY4X8dklWhMiOavaJo=
   github.com/zkochan/yaml-tag/5dc60b313a917434585d02031c4fd4c326a751c1:
     dependencies:
-      js-yaml: 3.10.0
+      js-yaml: 3.11.0
     dev: true
     name: yaml-tag
     resolution:
+      registry: 'https://registry.npmjs.org/'
       tarball: 'https://codeload.github.com/zkochan/yaml-tag/tar.gz/5dc60b313a917434585d02031c4fd4c326a751c1'
     version: 1.1.0
 registry: 'https://registry.npmjs.org/'
diff --git a/src/pkgSnapshotToResolution.ts b/src/pkgSnapshotToResolution.ts
index 37b4137884..baff10d536 100644
--- a/src/pkgSnapshotToResolution.ts
+++ b/src/pkgSnapshotToResolution.ts
@@ -31,10 +31,10 @@ export default (
 
   function getTarball () {
     const parsed = dp.parse(relDepPath)
-    if (!parsed['name'] || !parsed['version']) {
+    if (!parsed.name || !parsed.version) {
       throw new Error(`Couldn't get tarball URL from dependency path ${relDepPath}`)
     }
-    return getNpmTarballUrl(parsed['name'], parsed['version'], {registry})
+    return getNpmTarballUrl(parsed.name, parsed.version, {registry})
   }
   // tslint:enable:no-string-literal
 }