diff --git a/.travis.yml b/.travis.yml
index c669c90..54aeb5d 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -18,4 +18,8 @@ addons:
       - cmake-data
 matrix:
   include:
-    - node_js: "6.2"
\ No newline at end of file
+    - node_js: "10.15"
+    - node_js: "11.15"
+    - node_js: "12.3"
+    - node_js: "12.13"
+    - node_js: "13.0"
\ No newline at end of file
diff --git a/appveyor.yml b/appveyor.yml
index 52f1745..d76511b 100644
--- a/appveyor.yml
+++ b/appveyor.yml
@@ -12,7 +12,9 @@ environment:
   access_token:
     secure: lssbt7qseyxwc46940dj
   matrix:
-    - nodejs_version: "6"
+    - nodejs_version: "10"
+    - nodejs_version: "11"
+    - nodejs_version: "12"
 
 platform:
   - x64
diff --git a/package-lock.json b/package-lock.json
index 83ce0f7..93f9cba 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -4,18 +4,15 @@
   "lockfileVersion": 1,
   "requires": true,
   "dependencies": {
-    "abbrev": {
-      "version": "1.1.0",
-      "resolved": "https://registry.npmjs.org/abbrev/-/abbrev-1.1.0.tgz",
-      "integrity": "sha1-0FVMIlZjbi9W58LlrRg/hZQo2B8="
-    },
     "ajv": {
-      "version": "4.11.8",
-      "resolved": "https://registry.npmjs.org/ajv/-/ajv-4.11.8.tgz",
-      "integrity": "sha1-gv+wKynmYq5TvcIK8VlHcGc5xTY=",
+      "version": "6.10.0",
+      "resolved": "https://registry.npmjs.org/ajv/-/ajv-6.10.0.tgz",
+      "integrity": "sha512-nffhOpkymDECQyR0mnsUtoCE8RlX38G0rYP+wgLWFyZuUyuuojSSvi/+euOiQBIn63whYwYVIIH1TvE3tu4OEg==",
       "requires": {
-        "co": "4.6.0",
-        "json-stable-stringify": "1.0.1"
+        "fast-deep-equal": "^2.0.1",
+        "fast-json-stable-stringify": "^2.0.0",
+        "json-schema-traverse": "^0.4.1",
+        "uri-js": "^4.2.2"
       }
     },
     "amdefine": {
@@ -38,8 +35,8 @@
       "resolved": "https://registry.npmjs.org/are-we-there-yet/-/are-we-there-yet-1.0.6.tgz",
       "integrity": "sha1-otKMkxAqpsyWJFomy5VN4G7FPww=",
       "requires": {
-        "delegates": "1.0.0",
-        "readable-stream": "2.3.0"
+        "delegates": "^1.0.0",
+        "readable-stream": "^2.0.0 || ^1.1.13"
       },
       "dependencies": {
         "isarray": {
@@ -48,45 +45,41 @@
           "integrity": "sha1-u5NdSFgsuhaMBoNJV6VKPgcSTxE="
         },
         "readable-stream": {
-          "version": "2.3.0",
-          "resolved": "https://registry.npmjs.org/readable-stream/-/readable-stream-2.3.0.tgz",
-          "integrity": "sha512-c7KMXGd4b48nN3OJ1U9qOsn6pXNzf6kLd3kdZCkg2sxAcoiufInqF0XckwEnlrcwuaYwonlNK8GQUIOC/WC7sg==",
+          "version": "2.3.6",
+          "resolved": "https://registry.npmjs.org/readable-stream/-/readable-stream-2.3.6.tgz",
+          "integrity": "sha512-tQtKA9WIAhBF3+VLAseyMqZeBjW0AHJoxOtYqSUZNJxauErmLbVm2FW1y+J/YA9dUrAC39ITejlZWhVIwawkKw==",
           "requires": {
-            "core-util-is": "1.0.2",
-            "inherits": "2.0.3",
-            "isarray": "1.0.0",
-            "process-nextick-args": "1.0.7",
-            "safe-buffer": "5.1.0",
-            "string_decoder": "1.0.2",
-            "util-deprecate": "1.0.2"
+            "core-util-is": "~1.0.0",
+            "inherits": "~2.0.3",
+            "isarray": "~1.0.0",
+            "process-nextick-args": "~2.0.0",
+            "safe-buffer": "~5.1.1",
+            "string_decoder": "~1.1.1",
+            "util-deprecate": "~1.0.1"
           }
         },
         "string_decoder": {
-          "version": "1.0.2",
-          "resolved": "https://registry.npmjs.org/string_decoder/-/string_decoder-1.0.2.tgz",
-          "integrity": "sha1-sp4fThEl+pehA4K4pTNze3SR4Xk=",
+          "version": "1.1.1",
+          "resolved": "https://registry.npmjs.org/string_decoder/-/string_decoder-1.1.1.tgz",
+          "integrity": "sha512-n/ShnvDi6FHbbVfviro+WojiFzv+s8MPMHBczVePfUpDJLwoLT0ht1l4YwBCbi8pJAveEEdnkHyPyTP/mzRfwg==",
           "requires": {
-            "safe-buffer": "5.0.1"
-          },
-          "dependencies": {
-            "safe-buffer": {
-              "version": "5.0.1",
-              "resolved": "https://registry.npmjs.org/safe-buffer/-/safe-buffer-5.0.1.tgz",
-              "integrity": "sha1-0mPKVGls2KMGtcplUekt5XkY++c="
-            }
+            "safe-buffer": "~5.1.0"
           }
         }
       }
     },
     "asn1": {
-      "version": "0.2.3",
-      "resolved": "https://registry.npmjs.org/asn1/-/asn1-0.2.3.tgz",
-      "integrity": "sha1-2sh4dxPJlmhJ/IGAd36+nB3fO4Y="
+      "version": "0.2.4",
+      "resolved": "https://registry.npmjs.org/asn1/-/asn1-0.2.4.tgz",
+      "integrity": "sha512-jxwzQpLQjSmWXgwaCZE9Nz+glAG01yF1QnWgbhGwHI5A6FRIEY6IVqtHhIepHqI7/kyEyQEagBC5mBEFlIYvdg==",
+      "requires": {
+        "safer-buffer": "~2.1.0"
+      }
     },
     "assert-plus": {
-      "version": "0.2.0",
-      "resolved": "https://registry.npmjs.org/assert-plus/-/assert-plus-0.2.0.tgz",
-      "integrity": "sha1-104bh+ev/A24qttwIfP+SBAasjQ="
+      "version": "1.0.0",
+      "resolved": "https://registry.npmjs.org/assert-plus/-/assert-plus-1.0.0.tgz",
+      "integrity": "sha1-8S4PPF13sLHN2RRpQuTpbB5N1SU="
     },
     "asynckit": {
       "version": "0.4.0",
@@ -94,14 +87,14 @@
       "integrity": "sha1-x57Zf380y48robyXkLzDZkdLS3k="
     },
     "aws-sign2": {
-      "version": "0.6.0",
-      "resolved": "https://registry.npmjs.org/aws-sign2/-/aws-sign2-0.6.0.tgz",
-      "integrity": "sha1-FDQt0428yU0OW4fXY81jYSwOeU8="
+      "version": "0.7.0",
+      "resolved": "https://registry.npmjs.org/aws-sign2/-/aws-sign2-0.7.0.tgz",
+      "integrity": "sha1-tG6JCTSpWR8tL2+G1+ap8bP+dqg="
     },
     "aws4": {
-      "version": "1.6.0",
-      "resolved": "https://registry.npmjs.org/aws4/-/aws4-1.6.0.tgz",
-      "integrity": "sha1-g+9cqGCysy5KDe7e6MdxudtXRx4="
+      "version": "1.8.0",
+      "resolved": "https://registry.npmjs.org/aws4/-/aws4-1.8.0.tgz",
+      "integrity": "sha512-ReZxvNHIOv88FlT7rxcXIIC0fPt4KZqZbOlivyWtXLt8ESx84zd3kMC6iK5jVeS2qt+g7ftS7ye4fi06X5rtRQ=="
     },
     "balanced-match": {
       "version": "1.0.0",
@@ -109,21 +102,25 @@
       "integrity": "sha1-ibTRmasr7kneFk6gK4nORi1xt2c="
     },
     "bcrypt-pbkdf": {
-      "version": "1.0.1",
-      "resolved": "https://registry.npmjs.org/bcrypt-pbkdf/-/bcrypt-pbkdf-1.0.1.tgz",
-      "integrity": "sha1-Y7xdy2EzG5K8Bf1SiVPDNGKgb40=",
-      "optional": true,
+      "version": "1.0.2",
+      "resolved": "https://registry.npmjs.org/bcrypt-pbkdf/-/bcrypt-pbkdf-1.0.2.tgz",
+      "integrity": "sha1-pDAdOJtqQ/m2f/PKEaP2Y342Dp4=",
       "requires": {
-        "tweetnacl": "0.14.5"
+        "tweetnacl": "^0.14.3"
       }
     },
+    "big-integer": {
+      "version": "1.6.43",
+      "resolved": "https://registry.npmjs.org/big-integer/-/big-integer-1.6.43.tgz",
+      "integrity": "sha512-9dULc9jsKmXl0Aeunug8wbF+58n+hQoFjqClN7WeZwGLh0XJUWyJJ9Ee+Ep+Ql/J9fRsTVaeThp8MhiCCrY0Jg=="
+    },
     "binary": {
       "version": "0.3.0",
       "resolved": "https://registry.npmjs.org/binary/-/binary-0.3.0.tgz",
       "integrity": "sha1-n2BVO8XOjDOG87VTz/R0Yq3sqnk=",
       "requires": {
-        "buffers": "0.1.1",
-        "chainsaw": "0.1.0"
+        "buffers": "~0.1.1",
+        "chainsaw": "~0.1.0"
       }
     },
     "bluebird": {
@@ -131,23 +128,25 @@
       "resolved": "https://registry.npmjs.org/bluebird/-/bluebird-2.11.0.tgz",
       "integrity": "sha1-U0uQM8AiyVecVro7Plpcqvu2UOE="
     },
-    "boom": {
-      "version": "2.10.1",
-      "resolved": "https://registry.npmjs.org/boom/-/boom-2.10.1.tgz",
-      "integrity": "sha1-OciRjO/1eZ+D+UkqhI9iWt0Mdm8=",
-      "requires": {
-        "hoek": "2.16.3"
-      }
-    },
     "brace-expansion": {
-      "version": "1.1.8",
-      "resolved": "https://registry.npmjs.org/brace-expansion/-/brace-expansion-1.1.8.tgz",
-      "integrity": "sha1-wHshHHyVLsH479Uad+8NHTmQopI=",
+      "version": "1.1.11",
+      "resolved": "https://registry.npmjs.org/brace-expansion/-/brace-expansion-1.1.11.tgz",
+      "integrity": "sha512-iCuPHDFgrHX7H2vEI/5xpz07zSHB00TpugqhmYtVmMO6518mCuRMoOYFldEBl0g187ufozdaHgWKcYFb61qGiA==",
       "requires": {
-        "balanced-match": "1.0.0",
+        "balanced-match": "^1.0.0",
         "concat-map": "0.0.1"
       }
     },
+    "buffer-indexof-polyfill": {
+      "version": "1.0.1",
+      "resolved": "https://registry.npmjs.org/buffer-indexof-polyfill/-/buffer-indexof-polyfill-1.0.1.tgz",
+      "integrity": "sha1-qfuAbOgUXVQoUQznLyeLs2OmOL8="
+    },
+    "buffer-shims": {
+      "version": "1.0.0",
+      "resolved": "https://registry.npmjs.org/buffer-shims/-/buffer-shims-1.0.0.tgz",
+      "integrity": "sha1-mXjOMXOIxkmth5MCjDR37wRKi1E="
+    },
     "buffers": {
       "version": "0.1.1",
       "resolved": "https://registry.npmjs.org/buffers/-/buffers-0.1.1.tgz",
@@ -168,47 +167,47 @@
       "resolved": "https://registry.npmjs.org/chainsaw/-/chainsaw-0.1.0.tgz",
       "integrity": "sha1-XqtQsor+WAdNDVgpE4iCi15fvJg=",
       "requires": {
-        "traverse": "0.3.9"
+        "traverse": ">=0.3.0 <0.4"
       }
     },
+    "chownr": {
+      "version": "1.1.1",
+      "resolved": "https://registry.npmjs.org/chownr/-/chownr-1.1.1.tgz",
+      "integrity": "sha512-j38EvO5+LHX84jlo6h4UzmOwi0UgW61WRyPtJz4qaadK5eY3BTS5TY/S1Stc3Uk2lIM6TPevAlULiEJwie860g=="
+    },
     "cliui": {
       "version": "3.2.0",
       "resolved": "https://registry.npmjs.org/cliui/-/cliui-3.2.0.tgz",
       "integrity": "sha1-EgYBU3qRbSmUD5NNo7SNWFo5IT0=",
       "requires": {
-        "string-width": "1.0.2",
-        "strip-ansi": "3.0.1",
-        "wrap-ansi": "2.1.0"
+        "string-width": "^1.0.1",
+        "strip-ansi": "^3.0.1",
+        "wrap-ansi": "^2.0.0"
       }
     },
     "cmake-js": {
-      "version": "3.5.0",
-      "resolved": "https://registry.npmjs.org/cmake-js/-/cmake-js-3.5.0.tgz",
-      "integrity": "sha512-oF8JcY94qAzSlA1xmq6PexQHeT76vFSCslnLue4WK/LlF41sy7GVvhSulfTrtMtmM1C1pih3NRXaFE4+9i24oQ==",
-      "requires": {
-        "bluebird": "2.11.0",
-        "debug": "2.6.8",
-        "fs-extra": "1.0.0",
-        "is-iojs": "1.1.0",
-        "lodash": "3.10.1",
-        "memory-stream": "0.0.3",
-        "npmconf": "2.1.2",
-        "npmlog": "1.2.1",
-        "request": "2.81.0",
-        "semver": "5.3.0",
-        "splitargs": "0.0.7",
-        "tar": "3.1.5",
-        "traceur": "0.0.111",
-        "unzip": "0.1.11",
-        "url-join": "0.0.1",
-        "which": "1.2.14",
-        "yargs": "3.32.0"
-      }
-    },
-    "co": {
-      "version": "4.6.0",
-      "resolved": "https://registry.npmjs.org/co/-/co-4.6.0.tgz",
-      "integrity": "sha1-bqa989hTrlTMuOR7+gvz+QMfsYQ="
+      "version": "3.7.3",
+      "resolved": "https://registry.npmjs.org/cmake-js/-/cmake-js-3.7.3.tgz",
+      "integrity": "sha512-X/EsCLfdlpVHwy5mwiuVdEr/B3AzQJzUA0mqDhkizp0o+RIHcNRhwD+Yh6oZmAAKTu9KWeudaLi0WPrvhY+BKQ==",
+      "requires": {
+        "bluebird": "^2.9.15",
+        "debug": "^2.1.3",
+        "fs-extra": "^5.0.0",
+        "is-iojs": "^1.0.1",
+        "lodash": "^3.6.0",
+        "memory-stream": "0",
+        "npmlog": "^1.2.0",
+        "rc": "^1.2.7",
+        "request": "^2.54.0",
+        "semver": "^5.0.3",
+        "splitargs": "0",
+        "tar": "^3.1.5",
+        "traceur": "0.0.x",
+        "unzipper": "^0.8.13",
+        "url-join": "0",
+        "which": "^1.0.9",
+        "yargs": "^3.6.0"
+      }
     },
     "code-point-at": {
       "version": "1.1.0",
@@ -216,11 +215,11 @@
       "integrity": "sha1-DQcLTQQ6W+ozovGkDi7bPZpMz3c="
     },
     "combined-stream": {
-      "version": "1.0.5",
-      "resolved": "https://registry.npmjs.org/combined-stream/-/combined-stream-1.0.5.tgz",
-      "integrity": "sha1-k4NwpXtKUd6ix3wV1cX9+JUWQAk=",
+      "version": "1.0.8",
+      "resolved": "https://registry.npmjs.org/combined-stream/-/combined-stream-1.0.8.tgz",
+      "integrity": "sha512-FQN4MRfuJeHf7cBbBMJFXhKSDq+2kAArBlmRBvcvFE5BB1HZKXtSFASDhdlz9zOYwxh8lDdnvmMOe/+5cdoEdg==",
       "requires": {
-        "delayed-stream": "1.0.0"
+        "delayed-stream": "~1.0.0"
       }
     },
     "commander": {
@@ -228,7 +227,7 @@
       "resolved": "https://registry.npmjs.org/commander/-/commander-2.9.0.tgz",
       "integrity": "sha1-nJkJQXbhIkDLItbFFGCYQA/g99Q=",
       "requires": {
-        "graceful-readlink": "1.0.1"
+        "graceful-readlink": ">= 1.0.0"
       }
     },
     "concat-map": {
@@ -236,15 +235,6 @@
       "resolved": "https://registry.npmjs.org/concat-map/-/concat-map-0.0.1.tgz",
       "integrity": "sha1-2Klr13/Wjfd5OnMDajug1UBdR3s="
     },
-    "config-chain": {
-      "version": "1.1.11",
-      "resolved": "https://registry.npmjs.org/config-chain/-/config-chain-1.1.11.tgz",
-      "integrity": "sha1-q6CXR9++TD5w52am5BWG4YWfxvI=",
-      "requires": {
-        "ini": "1.3.4",
-        "proto-list": "1.2.4"
-      }
-    },
     "core-util-is": {
       "version": "1.0.2",
       "resolved": "https://registry.npmjs.org/core-util-is/-/core-util-is-1.0.2.tgz",
@@ -255,17 +245,9 @@
       "resolved": "https://registry.npmjs.org/cross-spawn/-/cross-spawn-5.1.0.tgz",
       "integrity": "sha1-6L0O/uWPz/b4+UUQoKVUu/ojVEk=",
       "requires": {
-        "lru-cache": "4.1.1",
-        "shebang-command": "1.2.0",
-        "which": "1.2.14"
-      }
-    },
-    "cryptiles": {
-      "version": "2.0.5",
-      "resolved": "https://registry.npmjs.org/cryptiles/-/cryptiles-2.0.5.tgz",
-      "integrity": "sha1-O9/s3GCBR8HGcgL6KR59ylnqo7g=",
-      "requires": {
-        "boom": "2.10.1"
+        "lru-cache": "^4.0.1",
+        "shebang-command": "^1.2.0",
+        "which": "^1.2.9"
       }
     },
     "dashdash": {
@@ -273,20 +255,13 @@
       "resolved": "https://registry.npmjs.org/dashdash/-/dashdash-1.14.1.tgz",
       "integrity": "sha1-hTz6D3y+L+1d4gMmuN1YEDX24vA=",
       "requires": {
-        "assert-plus": "1.0.0"
-      },
-      "dependencies": {
-        "assert-plus": {
-          "version": "1.0.0",
-          "resolved": "https://registry.npmjs.org/assert-plus/-/assert-plus-1.0.0.tgz",
-          "integrity": "sha1-8S4PPF13sLHN2RRpQuTpbB5N1SU="
-        }
+        "assert-plus": "^1.0.0"
       }
     },
     "debug": {
-      "version": "2.6.8",
-      "resolved": "https://registry.npmjs.org/debug/-/debug-2.6.8.tgz",
-      "integrity": "sha1-5zFTHKLt4n0YgiJCfaF4IdaP9Pw=",
+      "version": "2.6.9",
+      "resolved": "https://registry.npmjs.org/debug/-/debug-2.6.9.tgz",
+      "integrity": "sha512-bC7ElrdJaJnPbAP+1EotYvqZsb3ecl5wi6Bfi6BJTUcNowp6cvspg0jXznRTKDjm/E7AdgFBVeAPVMNcKGsHMA==",
       "requires": {
         "ms": "2.0.0"
       }
@@ -302,14 +277,18 @@
       "integrity": "sha1-9dJgKStmDghO/0zbyfCK0yR0SLU=",
       "dev": true
     },
+    "deep-extend": {
+      "version": "0.6.0",
+      "resolved": "https://registry.npmjs.org/deep-extend/-/deep-extend-0.6.0.tgz",
+      "integrity": "sha512-LOHxIOaPYdHlJRtCQfDIVZtfw/ufM8+rVj649RIHzcm/vGwQRXFt6OPqIFWsm2XEMrNIEtWR64sY1LEKD2vAOA=="
+    },
     "define-properties": {
-      "version": "1.1.2",
-      "resolved": "https://registry.npmjs.org/define-properties/-/define-properties-1.1.2.tgz",
-      "integrity": "sha1-g6c/L+pWmJj7c3GTyPhzyvbUXJQ=",
+      "version": "1.1.3",
+      "resolved": "https://registry.npmjs.org/define-properties/-/define-properties-1.1.3.tgz",
+      "integrity": "sha512-3MqfYKj2lLzdMSf8ZIZE/V+Zuy+BgD6f164e8K2w7dgnpKArBDerGYpM46IYYcjnkdPNMjPk9A6VFB8+3SKlXQ==",
       "dev": true,
       "requires": {
-        "foreach": "2.0.5",
-        "object-keys": "1.0.11"
+        "object-keys": "^1.0.12"
       }
     },
     "defined": {
@@ -328,86 +307,129 @@
       "resolved": "https://registry.npmjs.org/delegates/-/delegates-1.0.0.tgz",
       "integrity": "sha1-hMbhWbgZBP3KWaDvRM2HDTElD5o="
     },
+    "duplexer2": {
+      "version": "0.1.4",
+      "resolved": "https://registry.npmjs.org/duplexer2/-/duplexer2-0.1.4.tgz",
+      "integrity": "sha1-ixLauHjA1p4+eJEFFmKjL8a93ME=",
+      "requires": {
+        "readable-stream": "^2.0.2"
+      },
+      "dependencies": {
+        "isarray": {
+          "version": "1.0.0",
+          "resolved": "https://registry.npmjs.org/isarray/-/isarray-1.0.0.tgz",
+          "integrity": "sha1-u5NdSFgsuhaMBoNJV6VKPgcSTxE="
+        },
+        "readable-stream": {
+          "version": "2.3.6",
+          "resolved": "https://registry.npmjs.org/readable-stream/-/readable-stream-2.3.6.tgz",
+          "integrity": "sha512-tQtKA9WIAhBF3+VLAseyMqZeBjW0AHJoxOtYqSUZNJxauErmLbVm2FW1y+J/YA9dUrAC39ITejlZWhVIwawkKw==",
+          "requires": {
+            "core-util-is": "~1.0.0",
+            "inherits": "~2.0.3",
+            "isarray": "~1.0.0",
+            "process-nextick-args": "~2.0.0",
+            "safe-buffer": "~5.1.1",
+            "string_decoder": "~1.1.1",
+            "util-deprecate": "~1.0.1"
+          }
+        },
+        "string_decoder": {
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+        "readable-stream": {
+          "version": "2.1.5",
+          "resolved": "https://registry.npmjs.org/readable-stream/-/readable-stream-2.1.5.tgz",
+          "integrity": "sha1-ZvqLcg4UOLNkaB8q0aY8YYRIydA=",
+          "requires": {
+            "buffer-shims": "^1.0.0",
+            "core-util-is": "~1.0.0",
+            "inherits": "~2.0.1",
+            "isarray": "~1.0.0",
+            "process-nextick-args": "~1.0.6",
+            "string_decoder": "~0.10.x",
+            "util-deprecate": "~1.0.1"
+          }
+        }
+      }
     },
-    "unzip": {
-      "version": "0.1.11",
-      "resolved": "https://registry.npmjs.org/unzip/-/unzip-0.1.11.tgz",
-      "integrity": "sha1-iXScY7BY19kNYZ+GuYqhU107l/A=",
+    "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==",
       "requires": {
-        "binary": "0.3.0",
-        "fstream": "0.1.31",
-        "match-stream": "0.0.2",
-        "pullstream": "0.4.1",
-        "readable-stream": "1.0.34",
-        "setimmediate": "1.0.5"
+        "punycode": "^2.1.0"
       }
     },
     "url-join": {
@@ -1330,24 +1276,26 @@
       "integrity": "sha1-RQ1Nyfpw3nMnYvvS1KKJgUGaDM8="
     },
     "uuid": {
-      "version": "3.1.0",
-      "resolved": "https://registry.npmjs.org/uuid/-/uuid-3.1.0.tgz",
-      "integrity": "sha512-DIWtzUkw04M4k3bf1IcpS2tngXEL26YUD2M0tMDUpnUrz2hgzUBlD55a4FjdLGPvfHxS6uluGWvaVEqgBcVa+g=="
+      "version": "3.3.2",
+      "resolved": "https://registry.npmjs.org/uuid/-/uuid-3.3.2.tgz",
+      "integrity": "sha512-yXJmeNaw3DnnKAOKJE51sL/ZaYfWJRl1pK9dr19YFCu0ObS231AB1/LbqTKRAQ5kw8A90rA6fr4riOUpTZvQZA=="
     },
     "verror": {
-      "version": "1.3.6",
-      "resolved": "https://registry.npmjs.org/verror/-/verror-1.3.6.tgz",
-      "integrity": "sha1-z/XfEpRtKX0rqu+qJoniW+AcAFw=",
+      "version": "1.10.0",
+      "resolved": "https://registry.npmjs.org/verror/-/verror-1.10.0.tgz",
+      "integrity": "sha1-OhBcoXBTr1XW4nDB+CiGguGNpAA=",
       "requires": {
-        "extsprintf": "1.0.2"
+        "assert-plus": "^1.0.0",
+        "core-util-is": "1.0.2",
+        "extsprintf": "^1.2.0"
       }
     },
     "which": {
-      "version": "1.2.14",
-      "resolved": "https://registry.npmjs.org/which/-/which-1.2.14.tgz",
-      "integrity": "sha1-mofEN48D6CfOyvGs31bHNsAcFOU=",
+      "version": "1.3.1",
+      "resolved": "https://registry.npmjs.org/which/-/which-1.3.1.tgz",
+      "integrity": "sha512-HxJdYWq1MTIQbJ3nw0cqssHoTNU267KlrDuGZ1WYlxDStUtKUhOaJmh112/TZmHxxUfuJqPXSOm7tDyas0OSIQ==",
       "requires": {
-        "isexe": "2.0.0"
+        "isexe": "^2.0.0"
       }
     },
     "window-size": {
@@ -1360,8 +1308,8 @@
       "resolved": "https://registry.npmjs.org/wrap-ansi/-/wrap-ansi-2.1.0.tgz",
       "integrity": "sha1-2Pw9KE3QV5T+hJc8rs3Rz4JP3YU=",
       "requires": {
-        "string-width": "1.0.2",
-        "strip-ansi": "3.0.1"
+        "string-width": "^1.0.1",
+        "strip-ansi": "^3.0.1"
       }
     },
     "wrappy": {
@@ -1375,22 +1323,22 @@
       "integrity": "sha1-bRX7qITAhnnA136I53WegR4H+kE="
     },
     "yallist": {
-      "version": "3.0.2",
-      "resolved": "https://registry.npmjs.org/yallist/-/yallist-3.0.2.tgz",
-      "integrity": "sha1-hFK0u36Dx8GI2AQcGoN8dz1ti7k="
+      "version": "3.0.3",
+      "resolved": "https://registry.npmjs.org/yallist/-/yallist-3.0.3.tgz",
+      "integrity": "sha512-S+Zk8DEWE6oKpV+vI3qWkaK+jSbIK86pCwe2IF/xwIpQ8jEuxpw9NyaGjmp9+BoJv5FV2piqCDcoCtStppiq2A=="
     },
     "yargs": {
       "version": "3.32.0",
       "resolved": "https://registry.npmjs.org/yargs/-/yargs-3.32.0.tgz",
       "integrity": "sha1-AwiOnr+edWtpdRYR0qXvWRSCyZU=",
       "requires": {
-        "camelcase": "2.1.1",
-        "cliui": "3.2.0",
-        "decamelize": "1.2.0",
-        "os-locale": "1.4.0",
-        "string-width": "1.0.2",
-        "window-size": "0.1.4",
-        "y18n": "3.2.1"
+        "camelcase": "^2.0.1",
+        "cliui": "^3.0.3",
+        "decamelize": "^1.1.1",
+        "os-locale": "^1.4.0",
+        "string-width": "^1.0.1",
+        "window-size": "^0.1.4",
+        "y18n": "^3.2.0"
       }
     }
   }
diff --git a/package.json b/package.json
index 68eac9c..ae3aa71 100644
--- a/package.json
+++ b/package.json
@@ -14,7 +14,7 @@
   "dependencies": {
     "cmake-js": "^3.5.0",
     "cross-spawn": "^5.1.0",
-    "nan": "^2.4.0",
+    "nan": "^2.14.0",
     "npm-run-path": "^2.0.2"
   },
   "devDependencies": {
diff --git a/src/taglib2.cc b/src/taglib2.cc
index ea0e0d0..80fdf93 100644
--- a/src/taglib2.cc
+++ b/src/taglib2.cc
@@ -79,7 +79,14 @@ NAN_METHOD(writeTagsSync) {
   if (!info[1]->IsObject()) return;
 
   options = v8::Local<v8::Object>::Cast(info[1]);
-  std::string audio_file = *v8::String::Utf8Value(info[0]->ToString());
+
+  Nan::MaybeLocal<v8::String> audio_file_maybe = Nan::To<v8::String>(info[0]);
+  if(audio_file_maybe.IsEmpty()) {
+    Nan::ThrowTypeError("Audio file not found");
+    return;
+  }
+
+  std::string audio_file = *v8::String::Utf8Value(v8::Isolate::GetCurrent(), audio_file_maybe.ToLocalChecked());
 
   if (!isFile(audio_file.c_str())) {
     Nan::ThrowTypeError("Audio file not found");
@@ -100,24 +107,34 @@ NAN_METHOD(writeTagsSync) {
   auto hasOption = [&](
     Local<v8::Object> o,
     const std::string name) -> bool {
+    v8::Maybe<bool> maybe_result = o->Has(Nan::GetCurrentContext(), Nan::New(name).ToLocalChecked());
 
-    return o->Has(Nan::New(name).ToLocalChecked());
+    if(maybe_result.IsNothing()) {
+      return false;
+    } else {
+      return maybe_result.ToChecked();
+    }
   };
 
   auto getOptionString = [&](
       Local<v8::Object> o,
       const std::string name) -> TagLib::String {
 
-    auto r = o->Get(Nan::New(name).ToLocalChecked());
-    std::string s = *v8::String::Utf8Value(r);
-    return StringToTagLibString(s);
+    auto r = o->Get(Nan::GetCurrentContext(), Nan::New(name).ToLocalChecked());
+
+    std::string st = *v8::String::Utf8Value(v8::Isolate::GetCurrent(), r.ToLocalChecked());
+    return StringToTagLibString(st);
   };
 
   auto getOptionInt = [&](
       Local<v8::Object> o,
       const std::string name) -> int {
 
-    return o->Get(Nan::New(name).ToLocalChecked())->Int32Value();
+    auto v = o->Get(Nan::GetCurrentContext(), Nan::New(name).ToLocalChecked());
+
+    Nan::Maybe<int> maybe = Nan::To<int32_t>(v.ToLocalChecked());
+
+    return maybe.ToChecked();
   };
 
   if (hasOption(options, "albumartist")) {
@@ -195,15 +212,15 @@ NAN_METHOD(writeTagsSync) {
   }
 
   if (hasOption(options, "pictures")) {
-    auto pictures = options->Get(Nan::New("pictures").ToLocalChecked());
-    Local<Array> pics = Local<Array>::Cast(pictures);
+    auto pictures = options->Get(Nan::GetCurrentContext(), Nan::New("pictures").ToLocalChecked());
+    Local<Array> pics = Local<Array>::Cast(pictures.ToLocalChecked());
     unsigned int plen = pics->Length();
 
     TagLib::PictureMap picMap;
     bool hasPics = false;
 
     for (unsigned int i = 0; i < plen; i++) {
-      Local<v8::Object> imgObj = Handle<Object>::Cast(pics->Get(i));
+      Local<v8::Object> imgObj = Handle<Object>::Cast(pics->Get(Nan::GetCurrentContext(), i).ToLocalChecked());
 
       if (!hasOption(imgObj, "mimetype")) {
         Nan::ThrowTypeError("mimetype required for each picture");
@@ -216,12 +233,14 @@ NAN_METHOD(writeTagsSync) {
       }
 
       auto mimetype = getOptionString(imgObj, "mimetype");
-      auto picture = imgObj->Get(Nan::New("picture").ToLocalChecked());
+      auto picture = Nan::To<v8::Object>(
+        imgObj->Get(Nan::GetCurrentContext(), Nan::New("picture").ToLocalChecked()).ToLocalChecked()
+      );
 
-      if (!picture.IsEmpty() && node::Buffer::HasInstance(picture->ToObject())) {
+      if (!picture.IsEmpty() && node::Buffer::HasInstance(picture.ToLocalChecked())) {
 
-        char* buffer = node::Buffer::Data(picture->ToObject());
-        const size_t blen = node::Buffer::Length(picture->ToObject());
+        char* buffer = node::Buffer::Data(picture.ToLocalChecked());
+        const size_t blen = node::Buffer::Length(picture.ToLocalChecked());
         TagLib::ByteVector data(buffer, blen);
 
         TagLib::Picture pic(data,
@@ -247,7 +266,13 @@ NAN_METHOD(writeTagsSync) {
 NAN_METHOD(readTagsSync) {
   Nan::HandleScope scope;
 
-  std::string audio_file = *v8::String::Utf8Value(info[0]->ToString());
+  Nan::MaybeLocal<v8::String> audio_file_maybe = Nan::To<v8::String>(info[0]);
+  if(audio_file_maybe.IsEmpty()) {
+    Nan::ThrowTypeError("Audio file not found");
+    return;
+  }
+
+  std::string audio_file = *v8::String::Utf8Value(v8::Isolate::GetCurrent(), audio_file_maybe.ToLocalChecked());
 
   if (!isFile(audio_file.c_str())) {
     Nan::ThrowTypeError("Audio file not found");
@@ -275,46 +300,57 @@ NAN_METHOD(readTagsSync) {
 
   v8::Local<v8::Object> obj = Nan::New<v8::Object>();
 
-  !tag->title().isEmpty() && obj->Set(
-    Nan::New("title").ToLocalChecked(),
-    TagLibStringToString(tag->title())
-  );
+  if(!tag->title().isEmpty()) {
+    auto test = obj->Set(
+      Nan::GetCurrentContext(),
+      Nan::New("title").ToLocalChecked(),
+      TagLibStringToString(tag->title())
+    );
+  }
 
-  !tag->artist().isEmpty() && obj->Set(
-    Nan::New("artist").ToLocalChecked(),
-    TagLibStringToString(tag->artist())
-  );
+  if(!tag->artist().isEmpty()) {
+    auto test = obj->Set(
+      Nan::GetCurrentContext(),
+      Nan::New("artist").ToLocalChecked(),
+      TagLibStringToString(tag->artist())
+    );
+  }
 
   if (map.contains("COMPILATION")) {
-    obj->Set(
+    auto test = obj->Set(
+      Nan::GetCurrentContext(),
       Nan::New("compilation").ToLocalChecked(),
       TagLibStringToString(map["COMPILATION"].toString(","))
     );
   }
 
   if (map.contains("ID")) {
-    obj->Set(
+    auto test = obj->Set(
+      Nan::GetCurrentContext(),
       Nan::New("id").ToLocalChecked(),
       TagLibStringToString(map["ID"].toString(","))
     );
   }
 
   if (map.contains("ALBUMARTIST")) {
-    obj->Set(
+    auto test = obj->Set(
+      Nan::GetCurrentContext(),
       Nan::New("albumartist").ToLocalChecked(),
       TagLibStringToString(map["ALBUMARTIST"].toString(","))
     );
   }
 
   if (map.contains("DISCNUMBER")) {
-    obj->Set(
+    auto test = obj->Set(
+      Nan::GetCurrentContext(),
       Nan::New("discnumber").ToLocalChecked(),
       TagLibStringToString(map["DISCNUMBER"].toString(","))
     );
   }
 
   if (map.contains("TRACKNUMBER")) {
-    obj->Set(
+    auto test = obj->Set(
+      Nan::GetCurrentContext(),
       Nan::New("tracknumber").ToLocalChecked(),
       TagLibStringToString(map["TRACKNUMBER"].toString(","))
     );
@@ -331,40 +367,53 @@ NAN_METHOD(readTagsSync) {
       i = atoi(s);
     }
 
-    obj->Set(
+    auto test = obj->Set(
+      Nan::GetCurrentContext(),
       Nan::New("bpm").ToLocalChecked(),
       Nan::New<v8::Integer>(i)
     );
   }
 
   if (map.contains("COMPOSER")) {
-    obj->Set(
+    auto test = obj->Set(
+      Nan::GetCurrentContext(),
       Nan::New("composer").ToLocalChecked(),
       TagLibStringToString(map["COMPOSER"].toString(","))
     );
   }
 
-  !tag->album().isEmpty() && obj->Set(
-    Nan::New("album").ToLocalChecked(),
-    TagLibStringToString(tag->album())
-  );
+  if(!tag->album().isEmpty()) {
+    auto test = obj->Set(
+      Nan::GetCurrentContext(),
+      Nan::New("album").ToLocalChecked(),
+      TagLibStringToString(tag->album())
+    );
+  }
 
-  !tag->comment().isEmpty() && obj->Set(
-    Nan::New("comment").ToLocalChecked(),
-    TagLibStringToString(tag->comment())
-  );
+  if(!tag->comment().isEmpty()) {
+    auto test = obj->Set(
+      Nan::GetCurrentContext(),
+      Nan::New("comment").ToLocalChecked(),
+      TagLibStringToString(tag->comment())
+    );
+  }
 
-  !tag->genre().isEmpty() && obj->Set(
-    Nan::New("genre").ToLocalChecked(),
-    TagLibStringToString(tag->genre())
-  );
+  if(!tag->genre().isEmpty()) {
+    auto test = obj->Set(
+      Nan::GetCurrentContext(),
+      Nan::New("genre").ToLocalChecked(),
+      TagLibStringToString(tag->genre())
+    );
+  }
 
-  obj->Set( // is always at least 0
+  auto test = obj->Set( // is always at least 0
+    Nan::GetCurrentContext(),
     Nan::New("track").ToLocalChecked(),
     Nan::New<v8::Integer>(tag->track())
   );
 
-  obj->Set( // is always at least 0
+  test = obj->Set( // is always at least 0
+    Nan::GetCurrentContext(),
     Nan::New("year").ToLocalChecked(),
     Nan::New<v8::Integer>(tag->year())
   );
@@ -394,20 +443,30 @@ NAN_METHOD(readTagsSync) {
       v8::Local<v8::Object> buf = Nan::NewBuffer(datasize).ToLocalChecked();
       memcpy(node::Buffer::Data(buf), rawdata, datasize);
 
-      imgObj->Set(
+      test = imgObj->Set(
+        Nan::GetCurrentContext(),
         Nan::New("mimetype").ToLocalChecked(),
         TagLibStringToString(p->mimeType())
       );
 
-      imgObj->Set(
+      test = imgObj->Set(
+        Nan::GetCurrentContext(),
         Nan::New("picture").ToLocalChecked(),
         buf
       );
 
-      pictures->Set(picIndex++, imgObj);
+      test = pictures->Set(
+        Nan::GetCurrentContext(),
+        picIndex++,
+        imgObj
+      );
     }
 
-    obj->Set(Nan::New("pictures").ToLocalChecked(), pictures);
+    test = obj->Set(
+      Nan::GetCurrentContext(),
+      Nan::New("pictures").ToLocalChecked(),
+      pictures
+    );
   }
   else if (!tag->pictures().isEmpty()) {
 
@@ -426,20 +485,30 @@ NAN_METHOD(readTagsSync) {
       v8::Local<v8::Object> buf = Nan::NewBuffer(datasize).ToLocalChecked();
       memcpy(node::Buffer::Data(buf), rawdata, datasize);
 
-      imgObj->Set(
+      auto test = imgObj->Set(
+        Nan::GetCurrentContext(),
         Nan::New("mimetype").ToLocalChecked(),
         TagLibStringToString(p.second[0].mime())
       );
 
-      imgObj->Set(
+      test = imgObj->Set(
+        Nan::GetCurrentContext(),
         Nan::New("picture").ToLocalChecked(),
         buf
       );
 
-      pictures->Set(picIndex++, imgObj);
+      test = pictures->Set(
+        Nan::GetCurrentContext(),
+        picIndex++,
+        imgObj
+      );
     }
 
-    obj->Set(Nan::New("pictures").ToLocalChecked(), pictures);
+    auto test = obj->Set(
+      Nan::GetCurrentContext(),
+      Nan::New("pictures").ToLocalChecked(),
+      pictures
+    );
   }
 
   if (f.audioProperties()) {
@@ -450,17 +519,20 @@ NAN_METHOD(readTagsSync) {
     int minutes = (properties->length() - seconds) / 60;
     int hours = (properties->length() - minutes * 60) / 60;
 
-    obj->Set(
+    test = obj->Set(
+      Nan::GetCurrentContext(),
       Nan::New("bitrate").ToLocalChecked(),
       Nan::New<v8::Integer>(properties->bitrate())
     );
 
-    obj->Set(
+    test = obj->Set(
+      Nan::GetCurrentContext(),
       Nan::New("samplerate").ToLocalChecked(),
       Nan::New<v8::Integer>(properties->sampleRate())
     );
 
-    obj->Set(
+    test = obj->Set(
+      Nan::GetCurrentContext(),
       Nan::New("channels").ToLocalChecked(),
       Nan::New<v8::Integer>(properties->channels())
     );
@@ -475,7 +547,8 @@ NAN_METHOD(readTagsSync) {
 
         string encoding = codec == 2 ? "alac" : "aac";
 
-        obj->Set(
+        test = obj->Set(
+          Nan::GetCurrentContext(),
           Nan::New("codec").ToLocalChecked(),
           Nan::New<v8::String>(encoding).ToLocalChecked()
         );
@@ -491,9 +564,14 @@ NAN_METHOD(readTagsSync) {
 
     auto time = Nan::New<v8::String>(s.c_str(), s.size()).ToLocalChecked();
 
-    obj->Set(Nan::New("time").ToLocalChecked(), time);
+    test = obj->Set(
+      Nan::GetCurrentContext(),
+      Nan::New("time").ToLocalChecked(),
+      time
+    );
 
-    obj->Set(
+    test = obj->Set(
+      Nan::GetCurrentContext(),
       Nan::New("length").ToLocalChecked(),
       Nan::New<v8::Integer>(properties->length())
     );
@@ -503,11 +581,17 @@ NAN_METHOD(readTagsSync) {
 }
 
 void Init(v8::Local<v8::Object> exports, v8::Local<v8::Value> module, void *) {
-  exports->Set(Nan::New("writeTagsSync").ToLocalChecked(),
-    Nan::New<v8::FunctionTemplate>(writeTagsSync)->GetFunction());
+  auto test = exports->Set(
+    Nan::GetCurrentContext(),
+    Nan::New("writeTagsSync").ToLocalChecked(),
+    Nan::New<v8::FunctionTemplate>(writeTagsSync)->GetFunction(Nan::GetCurrentContext()).ToLocalChecked()
+  );
 
-  exports->Set(Nan::New("readTagsSync").ToLocalChecked(),
-    Nan::New<v8::FunctionTemplate>(readTagsSync)->GetFunction());
+  test = exports->Set(
+    Nan::GetCurrentContext(),
+    Nan::New("readTagsSync").ToLocalChecked(),
+    Nan::New<v8::FunctionTemplate>(readTagsSync)->GetFunction(Nan::GetCurrentContext()).ToLocalChecked()
+  );
 }
 
 NODE_MODULE(taglib2, Init)