diff --git a/.travis.yml b/.travis.yml
index dd338dd..ceafed9 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -1,5 +1,5 @@
 language: node_js
 node_js:
-  - "4"
   - "6"
   - "8"
+  - "10"
diff --git a/README.md b/README.md
index 5c35cb5..9e317d7 100644
--- a/README.md
+++ b/README.md
@@ -17,7 +17,7 @@ npm i chardet
 To return the encoding with the highest confidence:
 ```javascript
 var chardet = require('chardet');
-chardet.detect(Buffer.from('hello there!'));
+chardet.detect(Buffer.alloc('hello there!'));
 // or
 chardet.detectFile('/path/to/file', function(err, encoding) {});
 // or
@@ -28,7 +28,7 @@ chardet.detectFileSync('/path/to/file');
 To return the full list of possible encodings:
 ```javascript
 var chardet = require('chardet');
-chardet.detectAll(Buffer.from('hello there!'));
+chardet.detectAll(Buffer.alloc('hello there!'));
 // or
 chardet.detectFileAll('/path/to/file', function(err, encoding) {});
 // or
@@ -40,7 +40,7 @@ chardet.detectFileAllSync('/path/to/file');
 
 ## Working with large data sets
 
-Sometimes, when data set is huge and you want to optimize performace (in tradeoff of less accuracy), 
+Sometimes, when data set is huge and you want to optimize performace (in tradeoff of less accuracy),
 you can sample only first N bytes of the buffer:
 
 ```javascript
diff --git a/package-lock.json b/package-lock.json
index 59d6f6b..b92b949 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -4,10 +4,37 @@
   "lockfileVersion": 1,
   "requires": true,
   "dependencies": {
+    "@gimenete/type-writer": {
+      "version": "0.1.3",
+      "resolved": "https://registry.npmjs.org/@gimenete/type-writer/-/type-writer-0.1.3.tgz",
+      "integrity": "sha512-vhpvVfM/fYqb1aAnkgOvtDKoOgU3ZYIvDnKSDAFSoBvallmGURMlHOE0/VG/gqunUZVXGCFBGHxI8swjBh+sIA==",
+      "dev": true,
+      "requires": {
+        "camelcase": "5.0.0",
+        "prettier": "1.14.2"
+      }
+    },
+    "@octokit/rest": {
+      "version": "15.10.0",
+      "resolved": "https://registry.npmjs.org/@octokit/rest/-/rest-15.10.0.tgz",
+      "integrity": "sha512-xZ4ejCZoqvKrIN3tQOKZlJ6nDQxaOdLcjRsamDnbckU7V5YTn2xheIqFXnQ2vLvxqVwyI8+2dfsODYbHxtwtSw==",
+      "dev": true,
+      "requires": {
+        "@gimenete/type-writer": "0.1.3",
+        "before-after-hook": "1.1.0",
+        "btoa-lite": "1.0.0",
+        "debug": "3.1.0",
+        "http-proxy-agent": "2.1.0",
+        "https-proxy-agent": "2.2.1",
+        "lodash": "4.17.10",
+        "node-fetch": "2.2.0",
+        "url-template": "2.0.8"
+      }
+    },
     "agent-base": {
-      "version": "4.2.0",
-      "resolved": "https://registry.npmjs.org/agent-base/-/agent-base-4.2.0.tgz",
-      "integrity": "sha512-c+R/U5X+2zz2+UCrCFv6odQzJdoqI+YecuhnAJLa1zYaMc13zPfwMwZrr91Pd1DYNo/yPRbiM4WVf9whgwFsIg==",
+      "version": "4.2.1",
+      "resolved": "https://registry.npmjs.org/agent-base/-/agent-base-4.2.1.tgz",
+      "integrity": "sha512-JVwXMr9nHYTUXsBFKUqhJwvlcYU/blreOEUkhNR2eXZIvwd+c+o5V4MgDPKWnMS/56awN3TRzIP+KoPn+roQtg==",
       "dev": true,
       "requires": {
         "es6-promisify": "5.0.0"
@@ -19,6 +46,12 @@
       "integrity": "sha1-ibTRmasr7kneFk6gK4nORi1xt2c=",
       "dev": true
     },
+    "before-after-hook": {
+      "version": "1.1.0",
+      "resolved": "https://registry.npmjs.org/before-after-hook/-/before-after-hook-1.1.0.tgz",
+      "integrity": "sha512-VOMDtYPwLbIncTxNoSzRyvaMxtXmLWLUqr8k5AfC1BzLk34HvBXaQX8snOwQZ4c0aX8aSERqtJSiI9/m2u5kuA==",
+      "dev": true
+    },
     "brace-expansion": {
       "version": "1.1.11",
       "resolved": "https://registry.npmjs.org/brace-expansion/-/brace-expansion-1.1.11.tgz",
@@ -30,19 +63,28 @@
       }
     },
     "browser-stdout": {
-      "version": "1.3.0",
-      "resolved": "https://registry.npmjs.org/browser-stdout/-/browser-stdout-1.3.0.tgz",
-      "integrity": "sha1-81HTKWnTL6XXpVZxVCY9korjvR8=",
+      "version": "1.3.1",
+      "resolved": "https://registry.npmjs.org/browser-stdout/-/browser-stdout-1.3.1.tgz",
+      "integrity": "sha512-qhAVI1+Av2X7qelOfAIYwXONood6XlZE/fXaBSmW/T5SzLAmCgzi+eiWE7fUvbHaeNBQH13UftjpXxsfLkMpgw==",
+      "dev": true
+    },
+    "btoa-lite": {
+      "version": "1.0.0",
+      "resolved": "https://registry.npmjs.org/btoa-lite/-/btoa-lite-1.0.0.tgz",
+      "integrity": "sha1-M3dm2hWAEhD92VbCLpxokaudAzc=",
+      "dev": true
+    },
+    "camelcase": {
+      "version": "5.0.0",
+      "resolved": "https://registry.npmjs.org/camelcase/-/camelcase-5.0.0.tgz",
+      "integrity": "sha512-faqwZqnWxbxn+F1d399ygeamQNy3lPp/H9H6rNrqYh4FSVCtcY+3cub1MxA8o9mDd55mM8Aghuu/kuyYA6VTsA==",
       "dev": true
     },
     "commander": {
-      "version": "2.9.0",
-      "resolved": "https://registry.npmjs.org/commander/-/commander-2.9.0.tgz",
-      "integrity": "sha1-nJkJQXbhIkDLItbFFGCYQA/g99Q=",
-      "dev": true,
-      "requires": {
-        "graceful-readlink": "1.0.1"
-      }
+      "version": "2.15.1",
+      "resolved": "https://registry.npmjs.org/commander/-/commander-2.15.1.tgz",
+      "integrity": "sha512-VlfT9F3V0v+jr4yxPc5gg9s62/fIVWsd2Bk2iD435um1NlGMYdVCq+MjcXnhYq2icNOizHr1kK+5TI6H0Hy0ag==",
+      "dev": true
     },
     "concat-map": {
       "version": "0.0.1",
@@ -60,15 +102,9 @@
       }
     },
     "diff": {
-      "version": "3.2.0",
-      "resolved": "https://registry.npmjs.org/diff/-/diff-3.2.0.tgz",
-      "integrity": "sha1-yc45Okt8vQsFinJck98pkCeGj/k=",
-      "dev": true
-    },
-    "dotenv": {
-      "version": "4.0.0",
-      "resolved": "https://registry.npmjs.org/dotenv/-/dotenv-4.0.0.tgz",
-      "integrity": "sha1-hk7xN5rO1Vzm+V3r7NzhefegzR0=",
+      "version": "3.5.0",
+      "resolved": "https://registry.npmjs.org/diff/-/diff-3.5.0.tgz",
+      "integrity": "sha512-A46qtFgd+g7pDZinpnwiRJtxbC1hpgf0uzP3iG89scHk0AUC7A1TGxf5OiiOUv/JMZR8GOt8hL900hV0bOy5xA==",
       "dev": true
     },
     "es6-promise": {
@@ -92,83 +128,26 @@
       "integrity": "sha1-G2HAViGQqN/2rjuyzwIAyhMLhtQ=",
       "dev": true
     },
-    "formatio": {
-      "version": "1.2.0",
-      "resolved": "https://registry.npmjs.org/formatio/-/formatio-1.2.0.tgz",
-      "integrity": "sha1-87IWfZBoxGmKjVH092CjmlTYGOs=",
-      "dev": true,
-      "requires": {
-        "samsam": "1.3.0"
-      }
-    },
     "fs.realpath": {
       "version": "1.0.0",
       "resolved": "https://registry.npmjs.org/fs.realpath/-/fs.realpath-1.0.0.tgz",
       "integrity": "sha1-FQStJSMVjKpA20onh8sBQRmU6k8=",
       "dev": true
     },
-    "github": {
-      "version": "13.1.0",
-      "resolved": "https://registry.npmjs.org/github/-/github-13.1.0.tgz",
-      "integrity": "sha512-xCen2waPsGF4MT9nE4gDwXYSD+ktmDyhQX3l/7cJcfZ0H6hjetkTZh8vzX39q/8sLtRS6iA01Mt5UIGQG9qJng==",
-      "dev": true,
-      "requires": {
-        "debug": "3.1.0",
-        "dotenv": "4.0.0",
-        "https-proxy-agent": "2.1.1",
-        "is-stream": "1.1.0",
-        "lodash": "4.17.5",
-        "proxy-from-env": "1.0.0",
-        "url-template": "2.0.8"
-      }
-    },
     "github-publish-release": {
-      "version": "4.2.0",
-      "resolved": "https://registry.npmjs.org/github-publish-release/-/github-publish-release-4.2.0.tgz",
-      "integrity": "sha512-ki8CSLpRrsU2ONidjt7PLrC4ZjhC/65gqRCQuY0ftlq8Hgyy35Rb9objPCMdCCjBtBJEaBYRHOoJBSUFdKAWWQ==",
+      "version": "5.0.0",
+      "resolved": "https://registry.npmjs.org/github-publish-release/-/github-publish-release-5.0.0.tgz",
+      "integrity": "sha512-LLE++vKy9mIUHJIln1xgmQoC33jgc0gjz9FujX0Pbl+L14feFYn18XBEBC5Ho4qmvsxROW9awShoO93uRPt0GA==",
       "dev": true,
       "requires": {
-        "github": "13.1.0",
-        "lodash": "4.17.5",
-        "mocha": "3.5.3",
-        "sinon": "2.4.1"
-      },
-      "dependencies": {
-        "debug": {
-          "version": "2.6.8",
-          "resolved": "https://registry.npmjs.org/debug/-/debug-2.6.8.tgz",
-          "integrity": "sha1-5zFTHKLt4n0YgiJCfaF4IdaP9Pw=",
-          "dev": true,
-          "requires": {
-            "ms": "2.0.0"
-          }
-        },
-        "mocha": {
-          "version": "3.5.3",
-          "resolved": "https://registry.npmjs.org/mocha/-/mocha-3.5.3.tgz",
-          "integrity": "sha512-/6na001MJWEtYxHOV1WLfsmR4YIynkUEhBwzsb+fk2qmQ3iqsi258l/Q2MWHJMImAcNpZ8DEdYAK72NHoIQ9Eg==",
-          "dev": true,
-          "requires": {
-            "browser-stdout": "1.3.0",
-            "commander": "2.9.0",
-            "debug": "2.6.8",
-            "diff": "3.2.0",
-            "escape-string-regexp": "1.0.5",
-            "glob": "7.1.1",
-            "growl": "1.9.2",
-            "he": "1.1.1",
-            "json3": "3.3.2",
-            "lodash.create": "3.1.1",
-            "mkdirp": "0.5.1",
-            "supports-color": "3.1.2"
-          }
-        }
+        "@octokit/rest": "15.10.0",
+        "lodash": "4.17.10"
       }
     },
     "glob": {
-      "version": "7.1.1",
-      "resolved": "https://registry.npmjs.org/glob/-/glob-7.1.1.tgz",
-      "integrity": "sha1-gFIR3wT6rxxjo2ADBs31reULLsg=",
+      "version": "7.1.2",
+      "resolved": "https://registry.npmjs.org/glob/-/glob-7.1.2.tgz",
+      "integrity": "sha512-MJTUg1kjuLeQCJ+ccE4Vpa6kKVXkPYJ2mOCQyUuKLcLQsdrMCpBPUi8qVE6+YuaJkozeA9NusTAw3hLr8Xe5EQ==",
       "dev": true,
       "requires": {
         "fs.realpath": "1.0.0",
@@ -179,22 +158,16 @@
         "path-is-absolute": "1.0.1"
       }
     },
-    "graceful-readlink": {
-      "version": "1.0.1",
-      "resolved": "https://registry.npmjs.org/graceful-readlink/-/graceful-readlink-1.0.1.tgz",
-      "integrity": "sha1-TK+tdrxi8C+gObL5Tpo906ORpyU=",
-      "dev": true
-    },
     "growl": {
-      "version": "1.9.2",
-      "resolved": "https://registry.npmjs.org/growl/-/growl-1.9.2.tgz",
-      "integrity": "sha1-Dqd0NxXbjY3ixe3hd14bRayFwC8=",
+      "version": "1.10.5",
+      "resolved": "https://registry.npmjs.org/growl/-/growl-1.10.5.tgz",
+      "integrity": "sha512-qBr4OuELkhPenW6goKVXiv47US3clb3/IbuWF9KNKEijAy9oeHxU9IgzjvJhHkUzhaj7rOUD7+YGWqUjLp5oSA==",
       "dev": true
     },
     "has-flag": {
-      "version": "1.0.0",
-      "resolved": "https://registry.npmjs.org/has-flag/-/has-flag-1.0.0.tgz",
-      "integrity": "sha1-nZ55MWXOAXoA8AQYxD+UKnsdEfo=",
+      "version": "3.0.0",
+      "resolved": "https://registry.npmjs.org/has-flag/-/has-flag-3.0.0.tgz",
+      "integrity": "sha1-tdRU3CGZriJWmfNGfloH87lVuv0=",
       "dev": true
     },
     "he": {
@@ -203,13 +176,23 @@
       "integrity": "sha1-k0EP0hsAlzUVH4howvJx80J+I/0=",
       "dev": true
     },
-    "https-proxy-agent": {
-      "version": "2.1.1",
-      "resolved": "https://registry.npmjs.org/https-proxy-agent/-/https-proxy-agent-2.1.1.tgz",
-      "integrity": "sha512-LK6tQUR/VOkTI6ygAfWUKKP95I+e6M1h7N3PncGu1CATHCnex+CAv9ttR0lbHu1Uk2PXm/WoAHFo6JCGwMjVMw==",
+    "http-proxy-agent": {
+      "version": "2.1.0",
+      "resolved": "https://registry.npmjs.org/http-proxy-agent/-/http-proxy-agent-2.1.0.tgz",
+      "integrity": "sha512-qwHbBLV7WviBl0rQsOzH6o5lwyOIvwp/BdFnvVxXORldu5TmjFfjzBcWUWS5kWAZhmv+JtiDhSuQCp4sBfbIgg==",
       "dev": true,
       "requires": {
-        "agent-base": "4.2.0",
+        "agent-base": "4.2.1",
+        "debug": "3.1.0"
+      }
+    },
+    "https-proxy-agent": {
+      "version": "2.2.1",
+      "resolved": "https://registry.npmjs.org/https-proxy-agent/-/https-proxy-agent-2.2.1.tgz",
+      "integrity": "sha512-HPCTS1LW51bcyMYbxUIOO4HEOlQ1/1qRaFWcyxvwaqUS9TY88aoEuHUY33kuAh1YhVVaDQhLZsnPd+XNARWZlQ==",
+      "dev": true,
+      "requires": {
+        "agent-base": "4.2.1",
         "debug": "3.1.0"
       }
     },
@@ -229,102 +212,10 @@
       "integrity": "sha1-Yzwsg+PaQqUC9SRmAiSA9CCCYd4=",
       "dev": true
     },
-    "is-stream": {
-      "version": "1.1.0",
-      "resolved": "https://registry.npmjs.org/is-stream/-/is-stream-1.1.0.tgz",
-      "integrity": "sha1-EtSj3U5o4Lec6428hBc66A2RykQ=",
-      "dev": true
-    },
-    "isarray": {
-      "version": "0.0.1",
-      "resolved": "https://registry.npmjs.org/isarray/-/isarray-0.0.1.tgz",
-      "integrity": "sha1-ihis/Kmo9Bd+Cav8YDiTmwXR7t8=",
-      "dev": true
-    },
-    "json3": {
-      "version": "3.3.2",
-      "resolved": "https://registry.npmjs.org/json3/-/json3-3.3.2.tgz",
-      "integrity": "sha1-PAQ0dD35Pi9cQq7nsZvLSDV19OE=",
-      "dev": true
-    },
     "lodash": {
-      "version": "4.17.5",
-      "resolved": "https://registry.npmjs.org/lodash/-/lodash-4.17.5.tgz",
-      "integrity": "sha512-svL3uiZf1RwhH+cWrfZn3A4+U58wbP0tGVTLQPbjplZxZ8ROD9VLuNgsRniTlLe7OlSqR79RUehXgpBW/s0IQw==",
-      "dev": true
-    },
-    "lodash._baseassign": {
-      "version": "3.2.0",
-      "resolved": "https://registry.npmjs.org/lodash._baseassign/-/lodash._baseassign-3.2.0.tgz",
-      "integrity": "sha1-jDigmVAPIVrQnlnxci/QxSv+Ck4=",
-      "dev": true,
-      "requires": {
-        "lodash._basecopy": "3.0.1",
-        "lodash.keys": "3.1.2"
-      }
-    },
-    "lodash._basecopy": {
-      "version": "3.0.1",
-      "resolved": "https://registry.npmjs.org/lodash._basecopy/-/lodash._basecopy-3.0.1.tgz",
-      "integrity": "sha1-jaDmqHbPNEwK2KVIghEd08XHyjY=",
-      "dev": true
-    },
-    "lodash._basecreate": {
-      "version": "3.0.3",
-      "resolved": "https://registry.npmjs.org/lodash._basecreate/-/lodash._basecreate-3.0.3.tgz",
-      "integrity": "sha1-G8ZhYU2qf8MRt9A78WgGoCE8+CE=",
-      "dev": true
-    },
-    "lodash._getnative": {
-      "version": "3.9.1",
-      "resolved": "https://registry.npmjs.org/lodash._getnative/-/lodash._getnative-3.9.1.tgz",
-      "integrity": "sha1-VwvH3t5G1hzc3mh9ZdPuy6o6r/U=",
-      "dev": true
-    },
-    "lodash._isiterateecall": {
-      "version": "3.0.9",
-      "resolved": "https://registry.npmjs.org/lodash._isiterateecall/-/lodash._isiterateecall-3.0.9.tgz",
-      "integrity": "sha1-UgOte6Ql+uhCRg5pbbnPPmqsBXw=",
-      "dev": true
-    },
-    "lodash.create": {
-      "version": "3.1.1",
-      "resolved": "https://registry.npmjs.org/lodash.create/-/lodash.create-3.1.1.tgz",
-      "integrity": "sha1-1/KEnw29p+BGgruM1yqwIkYd6+c=",
-      "dev": true,
-      "requires": {
-        "lodash._baseassign": "3.2.0",
-        "lodash._basecreate": "3.0.3",
-        "lodash._isiterateecall": "3.0.9"
-      }
-    },
-    "lodash.isarguments": {
-      "version": "3.1.0",
-      "resolved": "https://registry.npmjs.org/lodash.isarguments/-/lodash.isarguments-3.1.0.tgz",
-      "integrity": "sha1-L1c9hcaiQon/AGY7SRwdM4/zRYo=",
-      "dev": true
-    },
-    "lodash.isarray": {
-      "version": "3.0.4",
-      "resolved": "https://registry.npmjs.org/lodash.isarray/-/lodash.isarray-3.0.4.tgz",
-      "integrity": "sha1-eeTriMNqgSKvhvhEqpvNhRtfu1U=",
-      "dev": true
-    },
-    "lodash.keys": {
-      "version": "3.1.2",
-      "resolved": "https://registry.npmjs.org/lodash.keys/-/lodash.keys-3.1.2.tgz",
-      "integrity": "sha1-TbwEcrFWvlCgsoaFXRvQsMZWCYo=",
-      "dev": true,
-      "requires": {
-        "lodash._getnative": "3.9.1",
-        "lodash.isarguments": "3.1.0",
-        "lodash.isarray": "3.0.4"
-      }
-    },
-    "lolex": {
-      "version": "1.6.0",
-      "resolved": "https://registry.npmjs.org/lolex/-/lolex-1.6.0.tgz",
-      "integrity": "sha1-OpoCg0UqR9dDnnJzG54H1zhuSfY=",
+      "version": "4.17.10",
+      "resolved": "https://registry.npmjs.org/lodash/-/lodash-4.17.10.tgz",
+      "integrity": "sha512-UejweD1pDoXu+AD825lWwp4ZGtSwgnpZxb3JDViD7StjQz+Nb/6l093lx4OQ0foGWNRoc19mWy7BzL+UAK2iVg==",
       "dev": true
     },
     "minimatch": {
@@ -352,77 +243,22 @@
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     "mocha": {
-      "version": "5.1.1",
-      "resolved": "https://registry.npmjs.org/mocha/-/mocha-5.1.1.tgz",
-      "integrity": "sha512-kKKs/H1KrMMQIEsWNxGmb4/BGsmj0dkeyotEvbrAuQ01FcWRLssUNXCEUZk6SZtyJBi6EE7SL0zDDtItw1rGhw==",
+      "version": "5.2.0",
+      "resolved": "https://registry.npmjs.org/mocha/-/mocha-5.2.0.tgz",
+      "integrity": "sha512-2IUgKDhc3J7Uug+FxMXuqIyYzH7gJjXECKe/w43IGgQHTSj3InJi+yAA7T24L9bQMRKiUEHxEX37G5JpVUGLcQ==",
       "dev": true,
       "requires": {
         "browser-stdout": "1.3.1",
-        "commander": "2.11.0",
+        "commander": "2.15.1",
         "debug": "3.1.0",
         "diff": "3.5.0",
         "escape-string-regexp": "1.0.5",
         "glob": "7.1.2",
-        "growl": "1.10.3",
+        "growl": "1.10.5",
         "he": "1.1.1",
         "minimatch": "3.0.4",
         "mkdirp": "0.5.1",
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diff --git a/package.json b/package.json
index fb74645..6a67cf5 100644
--- a/package.json
+++ b/package.json
@@ -20,8 +20,8 @@
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