diff --git a/.travis.yml b/.travis.yml
index 16f2dab..5389931 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -23,14 +23,19 @@ jobs:
       env: WEBPACK_VERSION=latest JOB_PART=lint
       script: npm run travis:$JOB_PART
     - <<: *test-latest
-      node_js: 8
+      node_js: 10
       env: WEBPACK_VERSION=latest JOB_PART=coverage
       script: npm run travis:$JOB_PART
       after_success: 'bash <(curl -s https://codecov.io/bash)'
+    - <<: *test-latest
+      node_js: 10
+      env: WEBPACK_VERSION=latest JOB_PART=test
+      script: npm run travis:$JOB_PART
     - stage: Webpack canary
       before_script: npm i --no-save git://github.com/webpack/webpack.git#master
       script: npm run travis:$JOB_PART
-      node_js: 8
+      # Should run on minimum supported Node.
+      node_js: 6
       env: WEBPACK_VERSION=canary JOB_PART=test
 before_install:
   - 'if [[ `npm -v` != 5* ]]; then npm i -g npm@^5.0.0; fi'
diff --git a/package-lock.json b/package-lock.json
index 4aca9b7..d0a01eb 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -140,8 +140,7 @@
     "ansi-regex": {
       "version": "2.1.1",
       "resolved": "https://registry.npmjs.org/ansi-regex/-/ansi-regex-2.1.1.tgz",
-      "integrity": "sha1-w7M6te42DYbg5ijwRorn7yfWVN8=",
-      "dev": true
+      "integrity": "sha1-w7M6te42DYbg5ijwRorn7yfWVN8="
     },
     "ansi-styles": {
       "version": "2.2.1",
@@ -214,12 +213,6 @@
       "integrity": "sha512-L3hKV5R/p5o81R7O02IGnwpDmkp6E982XhtbuwSe3O4qOtMMMtodicASA1Cny2U+aCXcNpml+m4dPsvsJ3jatg==",
       "dev": true
     },
-    "arr-union": {
-      "version": "3.1.0",
-      "resolved": "https://registry.npmjs.org/arr-union/-/arr-union-3.1.0.tgz",
-      "integrity": "sha1-45sJrqne+Gao8gbiiK9jkZuuOcQ=",
-      "dev": true
-    },
     "array-equal": {
       "version": "1.0.0",
       "resolved": "http://registry.npmjs.org/array-equal/-/array-equal-1.0.0.tgz",
@@ -297,12 +290,6 @@
       "integrity": "sha1-8S4PPF13sLHN2RRpQuTpbB5N1SU=",
       "dev": true
     },
-    "assign-symbols": {
-      "version": "1.0.0",
-      "resolved": "https://registry.npmjs.org/assign-symbols/-/assign-symbols-1.0.0.tgz",
-      "integrity": "sha1-WWZ/QfrdTyDMvCu5a41Pf3jsA2c=",
-      "dev": true
-    },
     "async": {
       "version": "2.5.0",
       "resolved": "https://registry.npmjs.org/async/-/async-2.5.0.tgz",
@@ -329,12 +316,6 @@
       "integrity": "sha1-x57Zf380y48robyXkLzDZkdLS3k=",
       "dev": true
     },
-    "atob": {
-      "version": "2.1.2",
-      "resolved": "https://registry.npmjs.org/atob/-/atob-2.1.2.tgz",
-      "integrity": "sha512-Wm6ukoaOGJi/73p/cl2GvLjTI5JM1k/O14isD73YML8StrH/7/lRFgmg8nICZgD3bZZvjwCGxtMOD3wWNAu8cg==",
-      "dev": true
-    },
     "autoprefixer": {
       "version": "6.7.7",
       "resolved": "https://registry.npmjs.org/autoprefixer/-/autoprefixer-6.7.7.tgz",
@@ -367,6 +348,12 @@
       "integrity": "sha1-tG6JCTSpWR8tL2+G1+ap8bP+dqg=",
       "dev": true
     },
+    "aws4": {
+      "version": "1.8.0",
+      "resolved": "https://registry.npmjs.org/aws4/-/aws4-1.8.0.tgz",
+      "integrity": "sha512-ReZxvNHIOv88FlT7rxcXIIC0fPt4KZqZbOlivyWtXLt8ESx84zd3kMC6iK5jVeS2qt+g7ftS7ye4fi06X5rtRQ==",
+      "dev": true
+    },
     "babel-cli": {
       "version": "6.26.0",
       "resolved": "https://registry.npmjs.org/babel-cli/-/babel-cli-6.26.0.tgz",
@@ -1107,73 +1094,6 @@
       "integrity": "sha1-ibTRmasr7kneFk6gK4nORi1xt2c=",
       "dev": true
     },
-    "base": {
-      "version": "0.11.2",
-      "resolved": "https://registry.npmjs.org/base/-/base-0.11.2.tgz",
-      "integrity": "sha512-5T6P4xPgpp0YDFvSWwEZ4NoE3aM4QBQXDzmVbraCkFj8zHM+mba8SyqB5DbZWyR7mYHo6Y7BdQo3MoA4m0TeQg==",
-      "dev": true,
-      "requires": {
-        "cache-base": "^1.0.1",
-        "class-utils": "^0.3.5",
-        "component-emitter": "^1.2.1",
-        "define-property": "^1.0.0",
-        "isobject": "^3.0.1",
-        "mixin-deep": "^1.2.0",
-        "pascalcase": "^0.1.1"
-      },
-      "dependencies": {
-        "define-property": {
-          "version": "1.0.0",
-          "resolved": "https://registry.npmjs.org/define-property/-/define-property-1.0.0.tgz",
-          "integrity": "sha1-dp66rz9KY6rTr56NMEybvnm/sOY=",
-          "dev": true,
-          "requires": {
-            "is-descriptor": "^1.0.0"
-          }
-        },
-        "is-accessor-descriptor": {
-          "version": "1.0.0",
-          "resolved": "https://registry.npmjs.org/is-accessor-descriptor/-/is-accessor-descriptor-1.0.0.tgz",
-          "integrity": "sha512-m5hnHTkcVsPfqx3AKlyttIPb7J+XykHvJP2B9bZDjlhLIoEq4XoK64Vg7boZlVWYK6LUY94dYPEE7Lh0ZkZKcQ==",
-          "dev": true,
-          "requires": {
-            "kind-of": "^6.0.0"
-          }
-        },
-        "is-data-descriptor": {
-          "version": "1.0.0",
-          "resolved": "https://registry.npmjs.org/is-data-descriptor/-/is-data-descriptor-1.0.0.tgz",
-          "integrity": "sha512-jbRXy1FmtAoCjQkVmIVYwuuqDFUbaOeDjmed1tOGPrsMhtJA4rD9tkgA0F1qJ3gRFRXcHYVkdeaP50Q5rE/jLQ==",
-          "dev": true,
-          "requires": {
-            "kind-of": "^6.0.0"
-          }
-        },
-        "is-descriptor": {
-          "version": "1.0.2",
-          "resolved": "https://registry.npmjs.org/is-descriptor/-/is-descriptor-1.0.2.tgz",
-          "integrity": "sha512-2eis5WqQGV7peooDyLmNEPUrps9+SXX5c9pL3xEB+4e9HnGuDa7mB7kHxHw4CbqS9k1T2hOH3miL8n8WtiYVtg==",
-          "dev": true,
-          "requires": {
-            "is-accessor-descriptor": "^1.0.0",
-            "is-data-descriptor": "^1.0.0",
-            "kind-of": "^6.0.2"
-          }
-        },
-        "isobject": {
-          "version": "3.0.1",
-          "resolved": "https://registry.npmjs.org/isobject/-/isobject-3.0.1.tgz",
-          "integrity": "sha1-TkMekrEalzFjaqH5yNHMvP2reN8=",
-          "dev": true
-        },
-        "kind-of": {
-          "version": "6.0.2",
-          "resolved": "https://registry.npmjs.org/kind-of/-/kind-of-6.0.2.tgz",
-          "integrity": "sha512-s5kLOcnH0XqDO+FvuaLX8DDjZ18CGFk7VygH40QoKPUQhW4e2rvM0rwUq0t8IQDOwYSeLK01U90OjzBTme2QqA==",
-          "dev": true
-        }
-      }
-    },
     "base64-js": {
       "version": "1.2.1",
       "resolved": "https://registry.npmjs.org/base64-js/-/base64-js-1.2.1.tgz",
@@ -1215,6 +1135,15 @@
       "integrity": "sha512-ItfYfPLkWHUjckQCk8xC+LwxgK8NYcXywGigJgSwOP8Y2iyWT4f2vsZnoOXTTbo+o5yXmIUJ4gn5538SO5S3gA==",
       "dev": true
     },
+    "boom": {
+      "version": "4.3.1",
+      "resolved": "https://registry.npmjs.org/boom/-/boom-4.3.1.tgz",
+      "integrity": "sha1-T4owBctKfjiJ90kDD9JbluAdLjE=",
+      "dev": true,
+      "requires": {
+        "hoek": "4.x.x"
+      }
+    },
     "boxen": {
       "version": "0.6.0",
       "resolved": "https://registry.npmjs.org/boxen/-/boxen-0.6.0.tgz",
@@ -1439,31 +1368,6 @@
         }
       }
     },
-    "cache-base": {
-      "version": "1.0.1",
-      "resolved": "https://registry.npmjs.org/cache-base/-/cache-base-1.0.1.tgz",
-      "integrity": "sha512-AKcdTnFSWATd5/GCPRxr2ChwIJ85CeyrEyjRHlKxQ56d4XJMGym0uAiKn0xbLOGOl3+yRpOTi484dVCEc5AUzQ==",
-      "dev": true,
-      "requires": {
-        "collection-visit": "^1.0.0",
-        "component-emitter": "^1.2.1",
-        "get-value": "^2.0.6",
-        "has-value": "^1.0.0",
-        "isobject": "^3.0.1",
-        "set-value": "^2.0.0",
-        "to-object-path": "^0.3.0",
-        "union-value": "^1.0.0",
-        "unset-value": "^1.0.0"
-      },
-      "dependencies": {
-        "isobject": {
-          "version": "3.0.1",
-          "resolved": "https://registry.npmjs.org/isobject/-/isobject-3.0.1.tgz",
-          "integrity": "sha1-TkMekrEalzFjaqH5yNHMvP2reN8=",
-          "dev": true
-        }
-      }
-    },
     "caller-path": {
       "version": "0.1.0",
       "resolved": "https://registry.npmjs.org/caller-path/-/caller-path-0.1.0.tgz",
@@ -1614,35 +1518,6 @@
         "chalk": "^1.1.3"
       }
     },
-    "class-utils": {
-      "version": "0.3.6",
-      "resolved": "https://registry.npmjs.org/class-utils/-/class-utils-0.3.6.tgz",
-      "integrity": "sha512-qOhPa/Fj7s6TY8H8esGu5QNpMMQxz79h+urzrNYN6mn+9BnxlDGf5QZ+XeCDsxSjPqsSR56XOZOJmpeurnLMeg==",
-      "dev": true,
-      "requires": {
-        "arr-union": "^3.1.0",
-        "define-property": "^0.2.5",
-        "isobject": "^3.0.0",
-        "static-extend": "^0.1.1"
-      },
-      "dependencies": {
-        "define-property": {
-          "version": "0.2.5",
-          "resolved": "https://registry.npmjs.org/define-property/-/define-property-0.2.5.tgz",
-          "integrity": "sha1-w1se+RjsPJkPmlvFe+BKrOxcgRY=",
-          "dev": true,
-          "requires": {
-            "is-descriptor": "^0.1.0"
-          }
-        },
-        "isobject": {
-          "version": "3.0.1",
-          "resolved": "https://registry.npmjs.org/isobject/-/isobject-3.0.1.tgz",
-          "integrity": "sha1-TkMekrEalzFjaqH5yNHMvP2reN8=",
-          "dev": true
-        }
-      }
-    },
     "cli-boxes": {
       "version": "1.0.0",
       "resolved": "https://registry.npmjs.org/cli-boxes/-/cli-boxes-1.0.0.tgz",
@@ -1731,8 +1606,7 @@
     "co": {
       "version": "4.6.0",
       "resolved": "https://registry.npmjs.org/co/-/co-4.6.0.tgz",
-      "integrity": "sha1-bqa989hTrlTMuOR7+gvz+QMfsYQ=",
-      "dev": true
+      "integrity": "sha1-bqa989hTrlTMuOR7+gvz+QMfsYQ="
     },
     "coa": {
       "version": "1.0.4",
@@ -1749,16 +1623,6 @@
       "integrity": "sha1-DQcLTQQ6W+ozovGkDi7bPZpMz3c=",
       "dev": true
     },
-    "collection-visit": {
-      "version": "1.0.0",
-      "resolved": "https://registry.npmjs.org/collection-visit/-/collection-visit-1.0.0.tgz",
-      "integrity": "sha1-S8A3PBZLwykbTTaMgpzxqApZ3KA=",
-      "dev": true,
-      "requires": {
-        "map-visit": "^1.0.0",
-        "object-visit": "^1.0.0"
-      }
-    },
     "color": {
       "version": "0.11.4",
       "resolved": "https://registry.npmjs.org/color/-/color-0.11.4.tgz",
@@ -1811,6 +1675,15 @@
       "integrity": "sha1-FopHAXVran9RoSzgyXv6KMCE7WM=",
       "dev": true
     },
+    "combined-stream": {
+      "version": "1.0.7",
+      "resolved": "https://registry.npmjs.org/combined-stream/-/combined-stream-1.0.7.tgz",
+      "integrity": "sha512-brWl9y6vOB1xYPZcpZde3N9zDByXTosAeMDo4p1wzo6UMOX4vumB+TP1RZ76sfE6Md68Q0NJSrE/gbezd4Ul+w==",
+      "dev": true,
+      "requires": {
+        "delayed-stream": "~1.0.0"
+      }
+    },
     "commander": {
       "version": "2.11.0",
       "resolved": "https://registry.npmjs.org/commander/-/commander-2.11.0.tgz",
@@ -1833,12 +1706,6 @@
         "dot-prop": "^3.0.0"
       }
     },
-    "component-emitter": {
-      "version": "1.2.1",
-      "resolved": "https://registry.npmjs.org/component-emitter/-/component-emitter-1.2.1.tgz",
-      "integrity": "sha1-E3kY1teCg/ffemt8WmPhQOaUJeY=",
-      "dev": true
-    },
     "concat-map": {
       "version": "0.0.1",
       "resolved": "https://registry.npmjs.org/concat-map/-/concat-map-0.0.1.tgz",
@@ -2103,12 +1970,6 @@
       "integrity": "sha1-ms1whRxtXf3ZPZKC5e35SgP/RrU=",
       "dev": true
     },
-    "copy-descriptor": {
-      "version": "0.1.1",
-      "resolved": "https://registry.npmjs.org/copy-descriptor/-/copy-descriptor-0.1.1.tgz",
-      "integrity": "sha1-Z29us8OZl8LuGsOpJP1hJHSPV40=",
-      "dev": true
-    },
     "core-js": {
       "version": "2.5.1",
       "resolved": "https://registry.npmjs.org/core-js/-/core-js-2.5.1.tgz",
@@ -2224,6 +2085,26 @@
         "which": "^1.2.9"
       }
     },
+    "cryptiles": {
+      "version": "3.1.2",
+      "resolved": "https://registry.npmjs.org/cryptiles/-/cryptiles-3.1.2.tgz",
+      "integrity": "sha1-qJ+7Ig9c4l7FboxKqKT9e1sNKf4=",
+      "dev": true,
+      "requires": {
+        "boom": "5.x.x"
+      },
+      "dependencies": {
+        "boom": {
+          "version": "5.2.0",
+          "resolved": "https://registry.npmjs.org/boom/-/boom-5.2.0.tgz",
+          "integrity": "sha512-Z5BTk6ZRe4tXXQlkqftmsAUANpXmuwlsF5Oov8ThoMbQRzdGTA1ngYRW160GexgOgjsFOKJz0LYhoNi+2AMBUw==",
+          "dev": true,
+          "requires": {
+            "hoek": "4.x.x"
+          }
+        }
+      }
+    },
     "crypto-browserify": {
       "version": "3.11.1",
       "resolved": "https://registry.npmjs.org/crypto-browserify/-/crypto-browserify-3.11.1.tgz",
@@ -2433,7 +2314,6 @@
       "version": "2.6.9",
       "resolved": "https://registry.npmjs.org/debug/-/debug-2.6.9.tgz",
       "integrity": "sha512-bC7ElrdJaJnPbAP+1EotYvqZsb3ecl5wi6Bfi6BJTUcNowp6cvspg0jXznRTKDjm/E7AdgFBVeAPVMNcKGsHMA==",
-      "dev": true,
       "requires": {
         "ms": "2.0.0"
       }
@@ -2444,12 +2324,6 @@
       "integrity": "sha1-9lNNFRSCabIDUue+4m9QH5oZEpA=",
       "dev": true
     },
-    "decode-uri-component": {
-      "version": "0.2.0",
-      "resolved": "https://registry.npmjs.org/decode-uri-component/-/decode-uri-component-0.2.0.tgz",
-      "integrity": "sha1-6zkTMzRYd1y4TNGh+uBiEGu4dUU=",
-      "dev": true
-    },
     "deep-extend": {
       "version": "0.6.0",
       "resolved": "https://registry.npmjs.org/deep-extend/-/deep-extend-0.6.0.tgz",
@@ -2471,59 +2345,6 @@
         "strip-bom": "^2.0.0"
       }
     },
-    "define-property": {
-      "version": "2.0.2",
-      "resolved": "https://registry.npmjs.org/define-property/-/define-property-2.0.2.tgz",
-      "integrity": "sha512-jwK2UV4cnPpbcG7+VRARKTZPUWowwXA8bzH5NP6ud0oeAxyYPuGZUAC7hMugpCdz4BeSZl2Dl9k66CHJ/46ZYQ==",
-      "dev": true,
-      "requires": {
-        "is-descriptor": "^1.0.2",
-        "isobject": "^3.0.1"
-      },
-      "dependencies": {
-        "is-accessor-descriptor": {
-          "version": "1.0.0",
-          "resolved": "https://registry.npmjs.org/is-accessor-descriptor/-/is-accessor-descriptor-1.0.0.tgz",
-          "integrity": "sha512-m5hnHTkcVsPfqx3AKlyttIPb7J+XykHvJP2B9bZDjlhLIoEq4XoK64Vg7boZlVWYK6LUY94dYPEE7Lh0ZkZKcQ==",
-          "dev": true,
-          "requires": {
-            "kind-of": "^6.0.0"
-          }
-        },
-        "is-data-descriptor": {
-          "version": "1.0.0",
-          "resolved": "https://registry.npmjs.org/is-data-descriptor/-/is-data-descriptor-1.0.0.tgz",
-          "integrity": "sha512-jbRXy1FmtAoCjQkVmIVYwuuqDFUbaOeDjmed1tOGPrsMhtJA4rD9tkgA0F1qJ3gRFRXcHYVkdeaP50Q5rE/jLQ==",
-          "dev": true,
-          "requires": {
-            "kind-of": "^6.0.0"
-          }
-        },
-        "is-descriptor": {
-          "version": "1.0.2",
-          "resolved": "https://registry.npmjs.org/is-descriptor/-/is-descriptor-1.0.2.tgz",
-          "integrity": "sha512-2eis5WqQGV7peooDyLmNEPUrps9+SXX5c9pL3xEB+4e9HnGuDa7mB7kHxHw4CbqS9k1T2hOH3miL8n8WtiYVtg==",
-          "dev": true,
-          "requires": {
-            "is-accessor-descriptor": "^1.0.0",
-            "is-data-descriptor": "^1.0.0",
-            "kind-of": "^6.0.2"
-          }
-        },
-        "isobject": {
-          "version": "3.0.1",
-          "resolved": "https://registry.npmjs.org/isobject/-/isobject-3.0.1.tgz",
-          "integrity": "sha1-TkMekrEalzFjaqH5yNHMvP2reN8=",
-          "dev": true
-        },
-        "kind-of": {
-          "version": "6.0.2",
-          "resolved": "https://registry.npmjs.org/kind-of/-/kind-of-6.0.2.tgz",
-          "integrity": "sha512-s5kLOcnH0XqDO+FvuaLX8DDjZ18CGFk7VygH40QoKPUQhW4e2rvM0rwUq0t8IQDOwYSeLK01U90OjzBTme2QqA==",
-          "dev": true
-        }
-      }
-    },
     "defined": {
       "version": "1.0.0",
       "resolved": "https://registry.npmjs.org/defined/-/defined-1.0.0.tgz",
@@ -2629,6 +2450,12 @@
         "is-obj": "^1.0.0"
       }
     },
+    "duplexer": {
+      "version": "0.1.1",
+      "resolved": "http://registry.npmjs.org/duplexer/-/duplexer-0.1.1.tgz",
+      "integrity": "sha1-rOb/gIwc5mtX0ev5eXessCM0z8E=",
+      "dev": true
+    },
     "duplexer2": {
       "version": "0.1.4",
       "resolved": "https://registry.npmjs.org/duplexer2/-/duplexer2-0.1.4.tgz",
@@ -2750,6 +2577,12 @@
         "event-emitter": "~0.3.5"
       }
     },
+    "es6-promise": {
+      "version": "3.3.1",
+      "resolved": "http://registry.npmjs.org/es6-promise/-/es6-promise-3.3.1.tgz",
+      "integrity": "sha1-oIzd6EzNvzTQJ6FFG8kdS80ophM=",
+      "dev": true
+    },
     "es6-set": {
       "version": "0.1.5",
       "resolved": "https://registry.npmjs.org/es6-set/-/es6-set-0.1.5.tgz",
@@ -3045,6 +2878,21 @@
         "es5-ext": "~0.10.14"
       }
     },
+    "event-stream": {
+      "version": "3.3.4",
+      "resolved": "https://registry.npmjs.org/event-stream/-/event-stream-3.3.4.tgz",
+      "integrity": "sha1-SrTJoPWlTbkzi0w02Gv86PSzVXE=",
+      "dev": true,
+      "requires": {
+        "duplexer": "~0.1.1",
+        "from": "~0",
+        "map-stream": "~0.1.0",
+        "pause-stream": "0.0.11",
+        "split": "0.3",
+        "stream-combiner": "~0.0.4",
+        "through": "~2.3.1"
+      }
+    },
     "events": {
       "version": "1.1.1",
       "resolved": "https://registry.npmjs.org/events/-/events-1.1.1.tgz",
@@ -3115,27 +2963,6 @@
       "integrity": "sha1-p1Xqe8Gt/MWjHOfnYtuq3F5jZEQ=",
       "dev": true
     },
-    "extend-shallow": {
-      "version": "3.0.2",
-      "resolved": "https://registry.npmjs.org/extend-shallow/-/extend-shallow-3.0.2.tgz",
-      "integrity": "sha1-Jqcarwc7OfshJxcnRhMcJwQCjbg=",
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     "undefsafe": {
-      "version": "2.0.2",
-      "resolved": "https://registry.npmjs.org/undefsafe/-/undefsafe-2.0.2.tgz",
-      "integrity": "sha1-Il9rngM3Zj4Njnz9aG/Cg2zKznY=",
-      "dev": true,
-      "requires": {
-        "debug": "^2.2.0"
-      }
-    },
-    "union-value": {
-      "version": "1.0.0",
-      "resolved": "https://registry.npmjs.org/union-value/-/union-value-1.0.0.tgz",
-      "integrity": "sha1-XHHDTLW61dzr4+oM0IIHulqhrqQ=",
-      "dev": true,
-      "requires": {
-        "arr-union": "^3.1.0",
-        "get-value": "^2.0.6",
-        "is-extendable": "^0.1.1",
-        "set-value": "^0.4.3"
-      },
-      "dependencies": {
-        "extend-shallow": {
-          "version": "2.0.1",
-          "resolved": "https://registry.npmjs.org/extend-shallow/-/extend-shallow-2.0.1.tgz",
-          "integrity": "sha1-Ua99YUrZqfYQ6huvu5idaxxWiQ8=",
-          "dev": true,
-          "requires": {
-            "is-extendable": "^0.1.0"
-          }
-        },
-        "set-value": {
-          "version": "0.4.3",
-          "resolved": "https://registry.npmjs.org/set-value/-/set-value-0.4.3.tgz",
-          "integrity": "sha1-fbCPnT0i3H945Trzw79GZuzfzPE=",
-          "dev": true,
-          "requires": {
-            "extend-shallow": "^2.0.1",
-            "is-extendable": "^0.1.1",
-            "is-plain-object": "^2.0.1",
-            "to-object-path": "^0.3.0"
-          }
-        }
-      }
+      "version": "0.0.3",
+      "resolved": "https://registry.npmjs.org/undefsafe/-/undefsafe-0.0.3.tgz",
+      "integrity": "sha1-7Mo6A+VrmvFzhbqsgSrIO5lKli8=",
+      "dev": true
     },
     "uniq": {
       "version": "1.0.1",
@@ -10377,64 +9151,12 @@
         "crypto-random-string": "^1.0.0"
       }
     },
-    "unset-value": {
-      "version": "1.0.0",
-      "resolved": "https://registry.npmjs.org/unset-value/-/unset-value-1.0.0.tgz",
-      "integrity": "sha1-g3aHP30jNRef+x5vw6jtDfyKtVk=",
-      "dev": true,
-      "requires": {
-        "has-value": "^0.3.1",
-        "isobject": "^3.0.0"
-      },
-      "dependencies": {
-        "has-value": {
-          "version": "0.3.1",
-          "resolved": "https://registry.npmjs.org/has-value/-/has-value-0.3.1.tgz",
-          "integrity": "sha1-ex9YutpiyoJ+wKIHgCVlSEWZXh8=",
-          "dev": true,
-          "requires": {
-            "get-value": "^2.0.3",
-            "has-values": "^0.1.4",
-            "isobject": "^2.0.0"
-          },
-          "dependencies": {
-            "isobject": {
-              "version": "2.1.0",
-              "resolved": "https://registry.npmjs.org/isobject/-/isobject-2.1.0.tgz",
-              "integrity": "sha1-8GVWEJaj8dou9GJy+BXIQNh+DIk=",
-              "dev": true,
-              "requires": {
-                "isarray": "1.0.0"
-              }
-            }
-          }
-        },
-        "has-values": {
-          "version": "0.1.4",
-          "resolved": "https://registry.npmjs.org/has-values/-/has-values-0.1.4.tgz",
-          "integrity": "sha1-bWHeldkd/Km5oCCJrThL/49it3E=",
-          "dev": true
-        },
-        "isobject": {
-          "version": "3.0.1",
-          "resolved": "https://registry.npmjs.org/isobject/-/isobject-3.0.1.tgz",
-          "integrity": "sha1-TkMekrEalzFjaqH5yNHMvP2reN8=",
-          "dev": true
-        }
-      }
-    },
     "unzip-response": {
       "version": "1.0.2",
       "resolved": "https://registry.npmjs.org/unzip-response/-/unzip-response-1.0.2.tgz",
       "integrity": "sha1-uYTwh3/AqJwsdzzB73tbIytbBv4=",
       "dev": true
     },
-    "upath": {
-      "version": "1.1.0",
-      "resolved": "https://registry.npmjs.org/upath/-/upath-1.1.0.tgz",
-      "integrity": "sha512-bzpH/oBhoS/QI/YtbkqCg6VEiPYjSZtrHQM6/QnJS6OL9pKUFLqb3aFh4Scvwm45+7iAgiMkLhSbaZxUqmrprw==",
-      "dev": true
-    },
     "update-notifier": {
       "version": "1.0.3",
       "resolved": "https://registry.npmjs.org/update-notifier/-/update-notifier-1.0.3.tgz",
@@ -10451,29 +9173,6 @@
         "xdg-basedir": "^2.0.0"
       }
     },
-    "uri-js": {
-      "version": "4.2.2",
-      "resolved": "https://registry.npmjs.org/uri-js/-/uri-js-4.2.2.tgz",
-      "integrity": "sha512-KY9Frmirql91X2Qgjry0Wd4Y+YTdrdZheS8TFwvkbLWf/G5KNJDCh6pKL5OZctEW4+0Baa5idK2ZQuELRwPznQ==",
-      "dev": true,
-      "requires": {
-        "punycode": "^2.1.0"
-      },
-      "dependencies": {
-        "punycode": {
-          "version": "2.1.1",
-          "resolved": "https://registry.npmjs.org/punycode/-/punycode-2.1.1.tgz",
-          "integrity": "sha512-XRsRjdf+j5ml+y/6GKHPZbrF/8p2Yga0JPtdqTIY2Xe5ohJPD9saDJJLPvp9+NSBprVvevdXZybnj2cv8OEd0A==",
-          "dev": true
-        }
-      }
-    },
-    "urix": {
-      "version": "0.1.0",
-      "resolved": "https://registry.npmjs.org/urix/-/urix-0.1.0.tgz",
-      "integrity": "sha1-2pN/emLiH+wf0Y1Js1wpNQZ6bHI=",
-      "dev": true
-    },
     "url": {
       "version": "0.11.0",
       "resolved": "https://registry.npmjs.org/url/-/url-0.11.0.tgz",
@@ -10501,12 +9200,6 @@
         "prepend-http": "^1.0.1"
       }
     },
-    "use": {
-      "version": "3.1.1",
-      "resolved": "https://registry.npmjs.org/use/-/use-3.1.1.tgz",
-      "integrity": "sha512-cwESVXlO3url9YWlFW/TA9cshCEhtu7IKJ/p5soJ/gGpj7vbvFrAY/eIioQ6Dw23KjZhYgiIo8HOs1nQ2vr/oQ==",
-      "dev": true
-    },
     "user-home": {
       "version": "1.1.1",
       "resolved": "https://registry.npmjs.org/user-home/-/user-home-1.1.1.tgz",
diff --git a/package.json b/package.json
index 1e009da..cee58d7 100644
--- a/package.json
+++ b/package.json
@@ -49,8 +49,8 @@
     "extract-text-webpack-plugin": "^3.0.0",
     "jest": "^19.0.2",
     "lint-staged": "^3.4.0",
-    "lodash": "^4.17.4",
-    "node-sass": "^4.5.3",
+    "lodash": "^4.17.11",
+    "node-sass": "^4.9.3",
     "nodemon": "^1.11.0",
     "pre-commit": "^1.2.2",
     "sass-loader": "^6.0.6",
diff --git a/src/readBuffer.js b/src/readBuffer.js
index 44475d6..0285e57 100644
--- a/src/readBuffer.js
+++ b/src/readBuffer.js
@@ -3,10 +3,14 @@ export default function readBuffer(pipe, length, callback) {
     callback(null, new Buffer(0));
     return;
   }
+  let terminated = false;
   let remainingLength = length;
   const buffers = [];
   const readChunk = () => {
     const onChunk = (arg) => {
+      if (terminated) {
+        return;
+      }
       let chunk = arg;
       let overflow;
       if (chunk.length > remainingLength) {
@@ -23,10 +27,21 @@ export default function readBuffer(pipe, length, callback) {
         if (overflow) {
           pipe.unshift(overflow);
         }
+        terminated = true;
         callback(null, Buffer.concat(buffers, length));
       }
     };
+    const onEnd = () => {
+      if (terminated) {
+        return;
+      }
+      terminated = true;
+      const err = new Error(`Stream ended ${remainingLength.toString()} bytes prematurely`);
+      err.name = 'EarlyEOFError';
+      callback(err);
+    };
     pipe.on('data', onChunk);
+    pipe.on('end', onEnd);
     pipe.resume();
   };
   readChunk();
diff --git a/test/readBuffer.test.js b/test/readBuffer.test.js
new file mode 100644
index 0000000..65715a6
--- /dev/null
+++ b/test/readBuffer.test.js
@@ -0,0 +1,47 @@
+const stream = require('stream');
+const readBuffer = require('../dist/readBuffer');
+
+test('data is read', (done) => {
+  expect.assertions(3);
+  let eventCount = 0;
+  function read() {
+    eventCount += 1;
+    if (eventCount <= 8) {
+      return this.push(Buffer.from(eventCount.toString()));
+    }
+    return this.push(null);
+  }
+  const mockEventStream = new stream.Readable({
+    objectMode: true,
+    read,
+  });
+  function cb(err, data) {
+    expect(err).toBe(null);
+    expect(data.length).toBe(8);
+    expect(String.fromCharCode(data[0])).toBe('1');
+    done();
+  }
+  readBuffer.default(mockEventStream, 8, cb);
+});
+
+test('EOF returned for early quit', (done) => {
+  expect.assertions(2);
+  let eventCount = 0;
+  function read() {
+    eventCount += 1;
+    if (eventCount <= 5) {
+      return this.push(Buffer.from(eventCount.toString()));
+    }
+    return this.push(null);
+  }
+  const mockEventStream = new stream.Readable({
+    objectMode: true,
+    read,
+  });
+  function cb(err) {
+    expect(err.name).toBe('EarlyEOFError');
+    expect(err.message).toBe('Stream ended 3 bytes prematurely');
+    done();
+  }
+  readBuffer.default(mockEventStream, 8, cb);
+});