diff --git a/package-lock.json b/package-lock.json
index 64b7bc5..8527ce0 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -1,9 +1,398 @@
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@@ -6562,6 +7039,7 @@
           "version": "1.0.1",
           "bundled": true,
           "dev": true,
+          "optional": true,
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             "safe-buffer": "5.0.1"
           }
@@ -6576,6 +7054,7 @@
           "version": "3.0.1",
           "bundled": true,
           "dev": true,
+          "optional": true,
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             "ansi-regex": "2.1.1"
           }
@@ -6590,6 +7069,7 @@
           "version": "2.2.1",
           "bundled": true,
           "dev": true,
+          "optional": true,
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             "block-stream": "0.0.9",
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@@ -6645,7 +7125,8 @@
         "util-deprecate": {
           "version": "1.0.2",
           "bundled": true,
-          "dev": true
+          "dev": true,
+          "optional": true
         },
         "uuid": {
           "version": "3.0.1",
@@ -6674,7 +7155,8 @@
         "wrappy": {
           "version": "1.0.2",
           "bundled": true,
-          "dev": true
+          "dev": true,
+          "optional": true
         }
       }
     },
@@ -6744,52 +7226,6 @@
         "assert-plus": "1.0.0"
       }
     },
-    "ghooks": {
-      "version": "2.0.0",
-      "resolved": "https://registry.npmjs.org/ghooks/-/ghooks-2.0.0.tgz",
-      "integrity": "sha1-r/2Do26Lj73e2bhRRXxIrHTI6rg=",
-      "dev": true,
-      "requires": {
-        "execa": "0.4.0",
-        "findup": "0.1.5",
-        "lodash.clone": "4.3.2",
-        "manage-path": "2.0.0",
-        "opt-cli": "1.5.1",
-        "path-exists": "2.1.0",
-        "spawn-command": "0.0.2"
-      },
-      "dependencies": {
-        "execa": {
-          "version": "0.4.0",
-          "resolved": "https://registry.npmjs.org/execa/-/execa-0.4.0.tgz",
-          "integrity": "sha1-TrZGejaglfq7KXD/nV4/t7zm68M=",
-          "dev": true,
-          "requires": {
-            "cross-spawn-async": "2.2.5",
-            "is-stream": "1.1.0",
-            "npm-run-path": "1.0.0",
-            "object-assign": "4.1.1",
-            "path-key": "1.0.0",
-            "strip-eof": "1.0.0"
-          }
-        },
-        "npm-run-path": {
-          "version": "1.0.0",
-          "resolved": "https://registry.npmjs.org/npm-run-path/-/npm-run-path-1.0.0.tgz",
-          "integrity": "sha1-9cMr9ZX+ga6Sfa7FLoL4sACsPI8=",
-          "dev": true,
-          "requires": {
-            "path-key": "1.0.0"
-          }
-        },
-        "path-key": {
-          "version": "1.0.0",
-          "resolved": "https://registry.npmjs.org/path-key/-/path-key-1.0.0.tgz",
-          "integrity": "sha1-XVPVeAGWRsDWiADbThRua9wqx68=",
-          "dev": true
-        }
-      }
-    },
     "git-up": {
       "version": "2.0.9",
       "resolved": "https://registry.npmjs.org/git-up/-/git-up-2.0.9.tgz",
@@ -7022,12 +7458,6 @@
       "integrity": "sha1-Dovf5NHduIVNZOBOp8AOKgJuVlg=",
       "dev": true
     },
-    "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": "1.10.3",
       "resolved": "https://registry.npmjs.org/growl/-/growl-1.10.3.tgz",
@@ -7426,6 +7856,31 @@
         "extend": "3.0.0"
       }
     },
+    "husky": {
+      "version": "0.14.3",
+      "resolved": "https://registry.npmjs.org/husky/-/husky-0.14.3.tgz",
+      "integrity": "sha512-e21wivqHpstpoiWA/Yi8eFti8E+sQDSS53cpJsPptPs295QTOQR0ZwnHo2TXy1XOpZFD9rPOd3NpmqTK6uMLJA==",
+      "dev": true,
+      "requires": {
+        "is-ci": "^1.0.10",
+        "normalize-path": "^1.0.0",
+        "strip-indent": "^2.0.0"
+      },
+      "dependencies": {
+        "normalize-path": {
+          "version": "1.0.0",
+          "resolved": "https://registry.npmjs.org/normalize-path/-/normalize-path-1.0.0.tgz",
+          "integrity": "sha1-MtDkcvkf80VwHBWoMRAY07CpA3k=",
+          "dev": true
+        },
+        "strip-indent": {
+          "version": "2.0.0",
+          "resolved": "https://registry.npmjs.org/strip-indent/-/strip-indent-2.0.0.tgz",
+          "integrity": "sha1-XvjbKV0B5u1sv3qrlpmNeCJSe2g=",
+          "dev": true
+        }
+      }
+    },
     "iconv-lite": {
       "version": "0.4.19",
       "resolved": "https://registry.npmjs.org/iconv-lite/-/iconv-lite-0.4.19.tgz",
@@ -7574,6 +8029,12 @@
           "integrity": "sha1-o7MKXE8ZkYMWeqq5O+764937ZU8=",
           "dev": true
         },
+        "lodash": {
+          "version": "4.17.4",
+          "resolved": "https://registry.npmjs.org/lodash/-/lodash-4.17.4.tgz",
+          "integrity": "sha1-eCA6TRwyiuHYbcpkYONptX9AVa4=",
+          "dev": true
+        },
         "string-width": {
           "version": "2.1.1",
           "resolved": "https://registry.npmjs.org/string-width/-/string-width-2.1.1.tgz",
@@ -7708,6 +8169,15 @@
       "integrity": "sha1-hut1OSgF3cM69xySoO7fdO52BLI=",
       "dev": true
     },
+    "is-ci": {
+      "version": "1.2.1",
+      "resolved": "https://registry.npmjs.org/is-ci/-/is-ci-1.2.1.tgz",
+      "integrity": "sha512-s6tfsaQaQi3JNciBH6shVqEDvhGut0SUXr31ag8Pd8BBbVVlcGfWhpPmEOoM6RJ5TFhbypvf5yyRw/VXW1IiWg==",
+      "dev": true,
+      "requires": {
+        "ci-info": "^1.5.0"
+      }
+    },
     "is-data-descriptor": {
       "version": "0.1.4",
       "resolved": "https://registry.npmjs.org/is-data-descriptor/-/is-data-descriptor-0.1.4.tgz",
@@ -8164,24 +8634,32 @@
       }
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     "istanbul-lib-coverage": {
-      "version": "1.1.1",
-      "resolved": "https://registry.npmjs.org/istanbul-lib-coverage/-/istanbul-lib-coverage-1.1.1.tgz",
-      "integrity": "sha512-0+1vDkmzxqJIn5rcoEqapSB4DmPxE31EtI2dF2aCkV5esN9EWHxZ0dwgDClivMXJqE7zaYQxq30hj5L0nlTN5Q==",
+      "version": "3.0.0",
+      "resolved": "https://registry.npmjs.org/istanbul-lib-coverage/-/istanbul-lib-coverage-3.0.0.tgz",
+      "integrity": "sha512-UiUIqxMgRDET6eR+o5HbfRYP1l0hqkWOs7vNxC/mggutCMUIhWMm8gAHb8tHlyfD3/l6rlgNA5cKdDzEAf6hEg==",
       "dev": true
     },
     "istanbul-lib-instrument": {
-      "version": "1.9.1",
-      "resolved": "https://registry.npmjs.org/istanbul-lib-instrument/-/istanbul-lib-instrument-1.9.1.tgz",
-      "integrity": "sha512-RQmXeQ7sphar7k7O1wTNzVczF9igKpaeGQAG9qR2L+BS4DCJNTI9nytRmIVYevwO0bbq+2CXvJmYDuz0gMrywA==",
+      "version": "4.0.0",
+      "resolved": "https://registry.npmjs.org/istanbul-lib-instrument/-/istanbul-lib-instrument-4.0.0.tgz",
+      "integrity": "sha512-Nm4wVHdo7ZXSG30KjZ2Wl5SU/Bw7bDx1PdaiIFzEStdjs0H12mOTncn1GVYuqQSaZxpg87VGBRsVRPGD2cD1AQ==",
       "dev": true,
       "requires": {
-        "babel-generator": "6.26.0",
-        "babel-template": "6.26.0",
-        "babel-traverse": "6.26.0",
-        "babel-types": "6.26.0",
-        "babylon": "6.18.0",
-        "istanbul-lib-coverage": "1.1.1",
-        "semver": "5.4.1"
+        "@babel/core": "^7.7.5",
+        "@babel/parser": "^7.7.5",
+        "@babel/template": "^7.7.4",
+        "@babel/traverse": "^7.7.4",
+        "@istanbuljs/schema": "^0.1.2",
+        "istanbul-lib-coverage": "^3.0.0",
+        "semver": "^6.3.0"
+      },
+      "dependencies": {
+        "semver": {
+          "version": "6.3.0",
+          "resolved": "https://registry.npmjs.org/semver/-/semver-6.3.0.tgz",
+          "integrity": "sha512-b39TBaTSfV6yBrapU89p5fKekE2m/NwnDocOVruQFS1/veMgdzuPcnOM34M6CwxW8jH/lxEa5rBoDeUwu5HHTw==",
+          "dev": true
+        }
       }
     },
     "js-tokens": {
@@ -8504,6 +8982,14 @@
       "requires": {
         "lodash": "4.17.4",
         "phantomjs-prebuilt": "2.1.16"
+      },
+      "dependencies": {
+        "lodash": {
+          "version": "4.17.4",
+          "resolved": "https://registry.npmjs.org/lodash/-/lodash-4.17.4.tgz",
+          "integrity": "sha1-eCA6TRwyiuHYbcpkYONptX9AVa4=",
+          "dev": true
+        }
       }
     },
     "karma-sauce-launcher": {
@@ -8642,7 +9128,8 @@
       "dev": true
     },
     "le_js": {
-      "version": "git://github.com/nason/le_js.git#7a75be7c1dd2438e3f1183a68bd2162b80bc94d8"
+      "version": "git://github.com/nason/le_js.git#7a75be7c1dd2438e3f1183a68bd2162b80bc94d8",
+      "from": "git://github.com/nason/le_js.git#7a75be7c1dd2438e3f1183a68bd2162b80bc94d8"
     },
     "le_node": {
       "version": "1.7.1",
@@ -8900,24 +9387,9 @@
       }
     },
     "lodash": {
-      "version": "4.17.4",
-      "resolved": "https://registry.npmjs.org/lodash/-/lodash-4.17.4.tgz",
-      "integrity": "sha1-eCA6TRwyiuHYbcpkYONptX9AVa4="
-    },
-    "lodash._baseclone": {
-      "version": "4.5.7",
-      "resolved": "https://registry.npmjs.org/lodash._baseclone/-/lodash._baseclone-4.5.7.tgz",
-      "integrity": "sha1-zkKt4IOE711i+nfDD2GkbmhvhDQ=",
-      "dev": true
-    },
-    "lodash.clone": {
-      "version": "4.3.2",
-      "resolved": "https://registry.npmjs.org/lodash.clone/-/lodash.clone-4.3.2.tgz",
-      "integrity": "sha1-5WsXa2gjp93jj38r9Y3n1ZcSAOk=",
-      "dev": true,
-      "requires": {
-        "lodash._baseclone": "4.5.7"
-      }
+      "version": "4.17.15",
+      "resolved": "https://registry.npmjs.org/lodash/-/lodash-4.17.15.tgz",
+      "integrity": "sha512-8xOcRHvCjnocdS5cpwXQXVzmmh5e5+saE2QGoeQmbKmRS6J3VQppPOIt0MnmE+4xlZoumy0GPG0D0MVIQbNA1A=="
     },
     "lodash.cond": {
       "version": "4.5.2",
@@ -9111,12 +9583,6 @@
         }
       }
     },
-    "manage-path": {
-      "version": "2.0.0",
-      "resolved": "https://registry.npmjs.org/manage-path/-/manage-path-2.0.0.tgz",
-      "integrity": "sha1-9M+EV7km7u4qg7FzUBQUvHbrlZc=",
-      "dev": true
-    },
     "map-cache": {
       "version": "0.2.2",
       "resolved": "https://registry.npmjs.org/map-cache/-/map-cache-0.2.2.tgz",
@@ -10172,6 +10638,7 @@
           "version": "0.1.4",
           "bundled": true,
           "dev": true,
+          "optional": true,
           "requires": {
             "kind-of": "3.2.2",
             "longest": "1.0.1",
@@ -10982,7 +11449,8 @@
         "longest": {
           "version": "1.0.1",
           "bundled": true,
-          "dev": true
+          "dev": true,
+          "optional": true
         },
         "loose-envify": {
           "version": "1.3.1",
@@ -11861,35 +12329,6 @@
         "mimic-fn": "1.1.0"
       }
     },
-    "opt-cli": {
-      "version": "1.5.1",
-      "resolved": "https://registry.npmjs.org/opt-cli/-/opt-cli-1.5.1.tgz",
-      "integrity": "sha1-BNtEexPJa5kusxaFJm9O0NlzbcI=",
-      "dev": true,
-      "requires": {
-        "commander": "2.9.0",
-        "lodash.clone": "4.3.2",
-        "manage-path": "2.0.0",
-        "spawn-command": "0.0.2-1"
-      },
-      "dependencies": {
-        "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"
-          }
-        },
-        "spawn-command": {
-          "version": "0.0.2-1",
-          "resolved": "https://registry.npmjs.org/spawn-command/-/spawn-command-0.0.2-1.tgz",
-          "integrity": "sha1-YvXpRmmBwbeW3Fkpk34RycaSG9A=",
-          "dev": true
-        }
-      }
-    },
     "optimist": {
       "version": "0.6.1",
       "resolved": "https://registry.npmjs.org/optimist/-/optimist-0.6.1.tgz",
@@ -12027,6 +12466,12 @@
         "p-limit": "1.1.0"
       }
     },
+    "p-try": {
+      "version": "2.2.0",
+      "resolved": "https://registry.npmjs.org/p-try/-/p-try-2.2.0.tgz",
+      "integrity": "sha512-R4nPAVTAU0B9D35/Gk3uJf/7XYbQcyohSKdvAxIRSNghFl4e71hVoGnBNQz9cWaXxO2I10KTC+3jMdvvoKw6dQ==",
+      "dev": true
+    },
     "package-json": {
       "version": "4.0.1",
       "resolved": "https://registry.npmjs.org/package-json/-/package-json-4.0.1.tgz",
@@ -13324,6 +13769,12 @@
           "requires": {
             "lodash": "4.17.4"
           }
+        },
+        "lodash": {
+          "version": "4.17.4",
+          "resolved": "https://registry.npmjs.org/lodash/-/lodash-4.17.4.tgz",
+          "integrity": "sha1-eCA6TRwyiuHYbcpkYONptX9AVa4=",
+          "dev": true
         }
       }
     },
@@ -13833,12 +14284,6 @@
         "trim": "0.0.1"
       }
     },
-    "spawn-command": {
-      "version": "0.0.2",
-      "resolved": "https://registry.npmjs.org/spawn-command/-/spawn-command-0.0.2.tgz",
-      "integrity": "sha1-lUThpDygRfhTGqwaSMspva5iM44=",
-      "dev": true
-    },
     "spdx-correct": {
       "version": "1.0.2",
       "resolved": "https://registry.npmjs.org/spdx-correct/-/spdx-correct-1.0.2.tgz",
@@ -14237,6 +14682,12 @@
           "integrity": "sha1-o7MKXE8ZkYMWeqq5O+764937ZU8=",
           "dev": true
         },
+        "lodash": {
+          "version": "4.17.4",
+          "resolved": "https://registry.npmjs.org/lodash/-/lodash-4.17.4.tgz",
+          "integrity": "sha1-eCA6TRwyiuHYbcpkYONptX9AVa4=",
+          "dev": true
+        },
         "string-width": {
           "version": "2.1.1",
           "resolved": "https://registry.npmjs.org/string-width/-/string-width-2.1.1.tgz",
@@ -14303,16 +14754,30 @@
       }
     },
     "test-exclude": {
-      "version": "4.1.1",
-      "resolved": "https://registry.npmjs.org/test-exclude/-/test-exclude-4.1.1.tgz",
-      "integrity": "sha512-35+Asrsk3XHJDBgf/VRFexPgh3UyETv8IAn/LRTiZjVy6rjPVqdEk8dJcJYBzl1w0XCJM48lvTy8SfEsCWS4nA==",
+      "version": "6.0.0",
+      "resolved": "https://registry.npmjs.org/test-exclude/-/test-exclude-6.0.0.tgz",
+      "integrity": "sha512-cAGWPIyOHU6zlmg88jwm7VRyXnMN7iV68OGAbYDk/Mh/xC/pzVPlQtY6ngoIH/5/tciuhGfvESU8GrHrcxD56w==",
       "dev": true,
       "requires": {
-        "arrify": "1.0.1",
-        "micromatch": "2.3.11",
-        "object-assign": "4.1.1",
-        "read-pkg-up": "1.0.1",
-        "require-main-filename": "1.0.1"
+        "@istanbuljs/schema": "^0.1.2",
+        "glob": "^7.1.4",
+        "minimatch": "^3.0.4"
+      },
+      "dependencies": {
+        "glob": {
+          "version": "7.1.6",
+          "resolved": "https://registry.npmjs.org/glob/-/glob-7.1.6.tgz",
+          "integrity": "sha512-LwaxwyZ72Lk7vZINtNNrywX0ZuLyStrdDtabefZKAY5ZGJhVtgdznluResxNmPitE0SAO+O26sWTHeKSI2wMBA==",
+          "dev": true,
+          "requires": {
+            "fs.realpath": "^1.0.0",
+            "inflight": "^1.0.4",
+            "inherits": "2",
+            "minimatch": "^3.0.4",
+            "once": "^1.3.0",
+            "path-is-absolute": "^1.0.0"
+          }
+        }
       }
     },
     "testing": {
@@ -15816,6 +16281,14 @@
         "compress-commons": "1.2.2",
         "lodash": "4.17.4",
         "readable-stream": "2.3.3"
+      },
+      "dependencies": {
+        "lodash": {
+          "version": "4.17.4",
+          "resolved": "https://registry.npmjs.org/lodash/-/lodash-4.17.4.tgz",
+          "integrity": "sha1-eCA6TRwyiuHYbcpkYONptX9AVa4=",
+          "dev": true
+        }
       }
     }
   }
diff --git a/package.json b/package.json
index d90d90a..bd127ca 100644
--- a/package.json
+++ b/package.json
@@ -81,7 +81,7 @@
     "babel-core": "6.26.0",
     "babel-loader": "6.4.1",
     "babel-plugin-external-helpers": "6.22.0",
-    "babel-plugin-istanbul": "4.1.5",
+    "babel-plugin-istanbul": "6.0.0",
     "babel-plugin-transform-es2015-modules-umd": "6.24.1",
     "babel-polyfill": "6.26.0",
     "babel-preset-es2015": "6.24.1",
diff --git a/yarn.lock b/yarn.lock
index de5db8b..199f4d6 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -2,6 +2,127 @@
 # yarn lockfile v1
 
 
+"@babel/code-frame@^7.0.0", "@babel/code-frame@^7.5.5":
+  version "7.5.5"
+  resolved "https://registry.yarnpkg.com/@babel/code-frame/-/code-frame-7.5.5.tgz#bc0782f6d69f7b7d49531219699b988f669a8f9d"
+  dependencies:
+    "@babel/highlight" "^7.0.0"
+
+"@babel/core@^7.7.5":
+  version "7.7.7"
+  resolved "https://registry.yarnpkg.com/@babel/core/-/core-7.7.7.tgz#ee155d2e12300bcc0cff6a8ad46f2af5063803e9"
+  dependencies:
+    "@babel/code-frame" "^7.5.5"
+    "@babel/generator" "^7.7.7"
+    "@babel/helpers" "^7.7.4"
+    "@babel/parser" "^7.7.7"
+    "@babel/template" "^7.7.4"
+    "@babel/traverse" "^7.7.4"
+    "@babel/types" "^7.7.4"
+    convert-source-map "^1.7.0"
+    debug "^4.1.0"
+    json5 "^2.1.0"
+    lodash "^4.17.13"
+    resolve "^1.3.2"
+    semver "^5.4.1"
+    source-map "^0.5.0"
+
+"@babel/generator@^7.7.4", "@babel/generator@^7.7.7":
+  version "7.7.7"
+  resolved "https://registry.yarnpkg.com/@babel/generator/-/generator-7.7.7.tgz#859ac733c44c74148e1a72980a64ec84b85f4f45"
+  dependencies:
+    "@babel/types" "^7.7.4"
+    jsesc "^2.5.1"
+    lodash "^4.17.13"
+    source-map "^0.5.0"
+
+"@babel/helper-function-name@^7.7.4":
+  version "7.7.4"
+  resolved "https://registry.yarnpkg.com/@babel/helper-function-name/-/helper-function-name-7.7.4.tgz#ab6e041e7135d436d8f0a3eca15de5b67a341a2e"
+  dependencies:
+    "@babel/helper-get-function-arity" "^7.7.4"
+    "@babel/template" "^7.7.4"
+    "@babel/types" "^7.7.4"
+
+"@babel/helper-get-function-arity@^7.7.4":
+  version "7.7.4"
+  resolved "https://registry.yarnpkg.com/@babel/helper-get-function-arity/-/helper-get-function-arity-7.7.4.tgz#cb46348d2f8808e632f0ab048172130e636005f0"
+  dependencies:
+    "@babel/types" "^7.7.4"
+
+"@babel/helper-plugin-utils@^7.0.0":
+  version "7.0.0"
+  resolved "https://registry.yarnpkg.com/@babel/helper-plugin-utils/-/helper-plugin-utils-7.0.0.tgz#bbb3fbee98661c569034237cc03967ba99b4f250"
+
+"@babel/helper-split-export-declaration@^7.7.4":
+  version "7.7.4"
+  resolved "https://registry.yarnpkg.com/@babel/helper-split-export-declaration/-/helper-split-export-declaration-7.7.4.tgz#57292af60443c4a3622cf74040ddc28e68336fd8"
+  dependencies:
+    "@babel/types" "^7.7.4"
+
+"@babel/helpers@^7.7.4":
+  version "7.7.4"
+  resolved "https://registry.yarnpkg.com/@babel/helpers/-/helpers-7.7.4.tgz#62c215b9e6c712dadc15a9a0dcab76c92a940302"
+  dependencies:
+    "@babel/template" "^7.7.4"
+    "@babel/traverse" "^7.7.4"
+    "@babel/types" "^7.7.4"
+
+"@babel/highlight@^7.0.0":
+  version "7.5.0"
+  resolved "https://registry.yarnpkg.com/@babel/highlight/-/highlight-7.5.0.tgz#56d11312bd9248fa619591d02472be6e8cb32540"
+  dependencies:
+    chalk "^2.0.0"
+    esutils "^2.0.2"
+    js-tokens "^4.0.0"
+
+"@babel/parser@^7.7.4", "@babel/parser@^7.7.5", "@babel/parser@^7.7.7":
+  version "7.7.7"
+  resolved "https://registry.yarnpkg.com/@babel/parser/-/parser-7.7.7.tgz#1b886595419cf92d811316d5b715a53ff38b4937"
+
+"@babel/template@^7.7.4":
+  version "7.7.4"
+  resolved "https://registry.yarnpkg.com/@babel/template/-/template-7.7.4.tgz#428a7d9eecffe27deac0a98e23bf8e3675d2a77b"
+  dependencies:
+    "@babel/code-frame" "^7.0.0"
+    "@babel/parser" "^7.7.4"
+    "@babel/types" "^7.7.4"
+
+"@babel/traverse@^7.7.4":
+  version "7.7.4"
+  resolved "https://registry.yarnpkg.com/@babel/traverse/-/traverse-7.7.4.tgz#9c1e7c60fb679fe4fcfaa42500833333c2058558"
+  dependencies:
+    "@babel/code-frame" "^7.5.5"
+    "@babel/generator" "^7.7.4"
+    "@babel/helper-function-name" "^7.7.4"
+    "@babel/helper-split-export-declaration" "^7.7.4"
+    "@babel/parser" "^7.7.4"
+    "@babel/types" "^7.7.4"
+    debug "^4.1.0"
+    globals "^11.1.0"
+    lodash "^4.17.13"
+
+"@babel/types@^7.7.4":
+  version "7.7.4"
+  resolved "https://registry.yarnpkg.com/@babel/types/-/types-7.7.4.tgz#516570d539e44ddf308c07569c258ff94fde9193"
+  dependencies:
+    esutils "^2.0.2"
+    lodash "^4.17.13"
+    to-fast-properties "^2.0.0"
+
+"@istanbuljs/load-nyc-config@^1.0.0":
+  version "1.0.0"
+  resolved "https://registry.yarnpkg.com/@istanbuljs/load-nyc-config/-/load-nyc-config-1.0.0.tgz#10602de5570baea82f8afbfa2630b24e7a8cfe5b"
+  dependencies:
+    camelcase "^5.3.1"
+    find-up "^4.1.0"
+    js-yaml "^3.13.1"
+    resolve-from "^5.0.0"
+
+"@istanbuljs/schema@^0.1.2":
+  version "0.1.2"
+  resolved "https://registry.yarnpkg.com/@istanbuljs/schema/-/schema-0.1.2.tgz#26520bf09abe4a5644cd5414e37125a8954241dd"
+
 JSONStream@^1.0.3:
   version "1.3.1"
   resolved "https://registry.yarnpkg.com/JSONStream/-/JSONStream-1.3.1.tgz#707f761e01dae9e16f1bcf93703b78c70966579a"
@@ -591,13 +712,15 @@ babel-plugin-external-helpers@6.22.0:
   dependencies:
     babel-runtime "^6.22.0"
 
-babel-plugin-istanbul@4.1.5:
-  version "4.1.5"
-  resolved "https://registry.yarnpkg.com/babel-plugin-istanbul/-/babel-plugin-istanbul-4.1.5.tgz#6760cdd977f411d3e175bb064f2bc327d99b2b6e"
+babel-plugin-istanbul@6.0.0:
+  version "6.0.0"
+  resolved "https://registry.yarnpkg.com/babel-plugin-istanbul/-/babel-plugin-istanbul-6.0.0.tgz#e159ccdc9af95e0b570c75b4573b7c34d671d765"
   dependencies:
-    find-up "^2.1.0"
-    istanbul-lib-instrument "^1.7.5"
-    test-exclude "^4.1.1"
+    "@babel/helper-plugin-utils" "^7.0.0"
+    "@istanbuljs/load-nyc-config" "^1.0.0"
+    "@istanbuljs/schema" "^0.1.2"
+    istanbul-lib-instrument "^4.0.0"
+    test-exclude "^6.0.0"
 
 babel-plugin-syntax-async-functions@^6.8.0:
   version "6.13.0"
@@ -1474,6 +1597,10 @@ camelcase@^4.0.0, camelcase@^4.1.0:
   version "4.1.0"
   resolved "https://registry.yarnpkg.com/camelcase/-/camelcase-4.1.0.tgz#d545635be1e33c542649c69173e5de6acfae34dd"
 
+camelcase@^5.3.1:
+  version "5.3.1"
+  resolved "https://registry.yarnpkg.com/camelcase/-/camelcase-5.3.1.tgz#e3c9b31569e106811df242f715725a1f4c494320"
+
 caniuse-lite@^1.0.30000757:
   version "1.0.30000758"
   resolved "https://registry.yarnpkg.com/caniuse-lite/-/caniuse-lite-1.0.30000758.tgz#e261140076651049cf6891ed4bc649b5c8c26c69"
@@ -1832,6 +1959,12 @@ convert-source-map@^1.1.1, convert-source-map@^1.3.0, convert-source-map@^1.5.0:
   version "1.5.0"
   resolved "https://registry.yarnpkg.com/convert-source-map/-/convert-source-map-1.5.0.tgz#9acd70851c6d5dfdd93d9282e5edf94a03ff46b5"
 
+convert-source-map@^1.7.0:
+  version "1.7.0"
+  resolved "https://registry.yarnpkg.com/convert-source-map/-/convert-source-map-1.7.0.tgz#17a2cb882d7f77d3490585e2ce6c524424a3a442"
+  dependencies:
+    safe-buffer "~5.1.1"
+
 cookie-signature@1.0.6:
   version "1.0.6"
   resolved "https://registry.yarnpkg.com/cookie-signature/-/cookie-signature-1.0.6.tgz#e303a882b342cc3ee8ca513a79999734dab3ae2c"
@@ -1986,6 +2119,12 @@ debug@3.1.0, debug@^3.1.0:
   dependencies:
     ms "2.0.0"
 
+debug@^4.1.0:
+  version "4.1.1"
+  resolved "https://registry.yarnpkg.com/debug/-/debug-4.1.1.tgz#3b72260255109c6b589cee050f1d516139664791"
+  dependencies:
+    ms "^2.1.1"
+
 decache@^3.0.5:
   version "3.1.0"
   resolved "https://registry.yarnpkg.com/decache/-/decache-3.1.0.tgz#4f5036fbd6581fcc97237ac3954a244b9536c2da"
@@ -2919,6 +3058,13 @@ find-up@^2.0.0, find-up@^2.1.0:
   dependencies:
     locate-path "^2.0.0"
 
+find-up@^4.1.0:
+  version "4.1.0"
+  resolved "https://registry.yarnpkg.com/find-up/-/find-up-4.1.0.tgz#97afe7d6cdc0bc5928584b7c8d7b16e8a9aa5d19"
+  dependencies:
+    locate-path "^5.0.0"
+    path-exists "^4.0.0"
+
 find@^0.2.4:
   version "0.2.7"
   resolved "https://registry.yarnpkg.com/find/-/find-0.2.7.tgz#7afbd00f8f08c5b622f97cda6f714173d547bb3f"
@@ -3187,6 +3333,17 @@ glob@^6.0.1:
     once "^1.3.0"
     path-is-absolute "^1.0.0"
 
+glob@^7.1.4:
+  version "7.1.6"
+  resolved "https://registry.yarnpkg.com/glob/-/glob-7.1.6.tgz#141f33b81a7c2492e125594307480c46679278a6"
+  dependencies:
+    fs.realpath "^1.0.0"
+    inflight "^1.0.4"
+    inherits "2"
+    minimatch "^3.0.4"
+    once "^1.3.0"
+    path-is-absolute "^1.0.0"
+
 global-dirs@^0.1.0:
   version "0.1.0"
   resolved "https://registry.yarnpkg.com/global-dirs/-/global-dirs-0.1.0.tgz#10d34039e0df04272e262cf24224f7209434df4f"
@@ -3197,6 +3354,10 @@ globals-docs@^2.3.0:
   version "2.3.0"
   resolved "https://registry.yarnpkg.com/globals-docs/-/globals-docs-2.3.0.tgz#dca4088af196f7800f4eba783eaeff335cb6759c"
 
+globals@^11.1.0:
+  version "11.12.0"
+  resolved "https://registry.yarnpkg.com/globals/-/globals-11.12.0.tgz#ab8795338868a0babd8525758018c2a7eb95c42e"
+
 globals@^9.17.0, globals@^9.18.0:
   version "9.18.0"
   resolved "https://registry.yarnpkg.com/globals/-/globals-9.18.0.tgz#aa3896b3e69b487f17e31ed2143d69a8e30c2d8a"
@@ -3952,13 +4113,17 @@ istanbul-lib-coverage@^1.1.1:
   version "1.1.1"
   resolved "https://registry.yarnpkg.com/istanbul-lib-coverage/-/istanbul-lib-coverage-1.1.1.tgz#73bfb998885299415c93d38a3e9adf784a77a9da"
 
+istanbul-lib-coverage@^3.0.0:
+  version "3.0.0"
+  resolved "https://registry.yarnpkg.com/istanbul-lib-coverage/-/istanbul-lib-coverage-3.0.0.tgz#f5944a37c70b550b02a78a5c3b2055b280cec8ec"
+
 istanbul-lib-hook@^1.1.0:
   version "1.1.0"
   resolved "https://registry.yarnpkg.com/istanbul-lib-hook/-/istanbul-lib-hook-1.1.0.tgz#8538d970372cb3716d53e55523dd54b557a8d89b"
   dependencies:
     append-transform "^0.4.0"
 
-istanbul-lib-instrument@^1.7.5, istanbul-lib-instrument@^1.9.1:
+istanbul-lib-instrument@^1.9.1:
   version "1.9.1"
   resolved "https://registry.yarnpkg.com/istanbul-lib-instrument/-/istanbul-lib-instrument-1.9.1.tgz#250b30b3531e5d3251299fdd64b0b2c9db6b558e"
   dependencies:
@@ -3970,6 +4135,18 @@ istanbul-lib-instrument@^1.7.5, istanbul-lib-instrument@^1.9.1:
     istanbul-lib-coverage "^1.1.1"
     semver "^5.3.0"
 
+istanbul-lib-instrument@^4.0.0:
+  version "4.0.0"
+  resolved "https://registry.yarnpkg.com/istanbul-lib-instrument/-/istanbul-lib-instrument-4.0.0.tgz#53321a7970f076262fd3292c8f9b2e4ac544aae1"
+  dependencies:
+    "@babel/core" "^7.7.5"
+    "@babel/parser" "^7.7.5"
+    "@babel/template" "^7.7.4"
+    "@babel/traverse" "^7.7.4"
+    "@istanbuljs/schema" "^0.1.2"
+    istanbul-lib-coverage "^3.0.0"
+    semver "^6.3.0"
+
 istanbul-lib-report@^1.1.2:
   version "1.1.2"
   resolved "https://registry.yarnpkg.com/istanbul-lib-report/-/istanbul-lib-report-1.1.2.tgz#922be27c13b9511b979bd1587359f69798c1d425"
@@ -4018,6 +4195,10 @@ js-tokens@^3.0.0, js-tokens@^3.0.2:
   version "3.0.2"
   resolved "https://registry.yarnpkg.com/js-tokens/-/js-tokens-3.0.2.tgz#9866df395102130e38f7f996bceb65443209c25b"
 
+js-tokens@^4.0.0:
+  version "4.0.0"
+  resolved "https://registry.yarnpkg.com/js-tokens/-/js-tokens-4.0.0.tgz#19203fb59991df98e3a287050d4647cdeaf32499"
+
 js-yaml@3.x, js-yaml@^3.6.1, js-yaml@^3.8.4, js-yaml@^3.9.1:
   version "3.10.0"
   resolved "https://registry.yarnpkg.com/js-yaml/-/js-yaml-3.10.0.tgz#2e78441646bd4682e963f22b6e92823c309c62dc"
@@ -4025,6 +4206,13 @@ js-yaml@3.x, js-yaml@^3.6.1, js-yaml@^3.8.4, js-yaml@^3.9.1:
     argparse "^1.0.7"
     esprima "^4.0.0"
 
+js-yaml@^3.13.1:
+  version "3.13.1"
+  resolved "https://registry.yarnpkg.com/js-yaml/-/js-yaml-3.13.1.tgz#aff151b30bfdfa8e49e05da22e7415e9dfa37847"
+  dependencies:
+    argparse "^1.0.7"
+    esprima "^4.0.0"
+
 jsbn@~0.1.0:
   version "0.1.1"
   resolved "https://registry.yarnpkg.com/jsbn/-/jsbn-0.1.1.tgz#a5e654c2e5a2deb5f201d96cefbca80c0ef2f513"
@@ -4037,6 +4225,10 @@ jsesc@^1.3.0:
   version "1.3.0"
   resolved "https://registry.yarnpkg.com/jsesc/-/jsesc-1.3.0.tgz#46c3fec8c1892b12b0833db9bc7622176dbab34b"
 
+jsesc@^2.5.1:
+  version "2.5.2"
+  resolved "https://registry.yarnpkg.com/jsesc/-/jsesc-2.5.2.tgz#80564d2e483dacf6e8ef209650a67df3f0c283a4"
+
 jsesc@~0.5.0:
   version "0.5.0"
   resolved "https://registry.yarnpkg.com/jsesc/-/jsesc-0.5.0.tgz#e7dee66e35d6fc16f710fe91d5cf69f70f08911d"
@@ -4071,6 +4263,12 @@ json5@^0.5.0, json5@^0.5.1:
   version "0.5.1"
   resolved "https://registry.yarnpkg.com/json5/-/json5-0.5.1.tgz#1eade7acc012034ad84e2396767ead9fa5495821"
 
+json5@^2.1.0:
+  version "2.1.1"
+  resolved "https://registry.yarnpkg.com/json5/-/json5-2.1.1.tgz#81b6cb04e9ba496f1c7005d07b4368a2638f90b6"
+  dependencies:
+    minimist "^1.2.0"
+
 jsonfile@^2.1.0:
   version "2.4.0"
   resolved "https://registry.yarnpkg.com/jsonfile/-/jsonfile-2.4.0.tgz#3736a2b428b87bbda0cc83b53fa3d633a35c2ae8"
@@ -4414,6 +4612,12 @@ locate-path@^2.0.0:
     p-locate "^2.0.0"
     path-exists "^3.0.0"
 
+locate-path@^5.0.0:
+  version "5.0.0"
+  resolved "https://registry.yarnpkg.com/locate-path/-/locate-path-5.0.0.tgz#1afba396afd676a6d42504d0a67a3a7eb9f62aa0"
+  dependencies:
+    p-locate "^4.1.0"
+
 lodash.cond@^4.3.0:
   version "4.5.2"
   resolved "https://registry.yarnpkg.com/lodash.cond/-/lodash.cond-4.5.2.tgz#f471a1da486be60f6ab955d17115523dd1d255d5"
@@ -4438,6 +4642,10 @@ lodash@^4.0.1, lodash@^4.11.1, lodash@^4.14.0, lodash@^4.16.6, lodash@^4.17.4, l
   version "4.17.4"
   resolved "https://registry.yarnpkg.com/lodash/-/lodash-4.17.4.tgz#78203a4d1c328ae1d86dca6460e369b57f4055ae"
 
+lodash@^4.17.13:
+  version "4.17.15"
+  resolved "https://registry.yarnpkg.com/lodash/-/lodash-4.17.15.tgz#b447f6670a0455bbfeedd11392eff330ea097548"
+
 lodash@^4.17.5:
   version "4.17.10"
   resolved "https://registry.npmjs.org/lodash/-/lodash-4.17.10.tgz#1b7793cf7259ea38fb3661d4d38b3260af8ae4e7"
@@ -4836,6 +5044,10 @@ ms@2.0.0:
   version "2.0.0"
   resolved "https://registry.yarnpkg.com/ms/-/ms-2.0.0.tgz#5608aeadfc00be6c2901df5f9861788de0d597c8"
 
+ms@^2.1.1:
+  version "2.1.2"
+  resolved "https://registry.yarnpkg.com/ms/-/ms-2.1.2.tgz#d09d1f357b443f493382a8eb3ccd183872ae6009"
+
 mute-stream@0.0.7:
   version "0.0.7"
   resolved "https://registry.yarnpkg.com/mute-stream/-/mute-stream-0.0.7.tgz#3075ce93bc21b8fab43e1bc4da7e8115ed1e7bab"
@@ -5205,12 +5417,28 @@ p-limit@^1.1.0:
   version "1.1.0"
   resolved "https://registry.yarnpkg.com/p-limit/-/p-limit-1.1.0.tgz#b07ff2d9a5d88bec806035895a2bab66a27988bc"
 
+p-limit@^2.2.0:
+  version "2.2.1"
+  resolved "https://registry.yarnpkg.com/p-limit/-/p-limit-2.2.1.tgz#aa07a788cc3151c939b5131f63570f0dd2009537"
+  dependencies:
+    p-try "^2.0.0"
+
 p-locate@^2.0.0:
   version "2.0.0"
   resolved "https://registry.yarnpkg.com/p-locate/-/p-locate-2.0.0.tgz#20a0103b222a70c8fd39cc2e580680f3dde5ec43"
   dependencies:
     p-limit "^1.1.0"
 
+p-locate@^4.1.0:
+  version "4.1.0"
+  resolved "https://registry.yarnpkg.com/p-locate/-/p-locate-4.1.0.tgz#a3428bb7088b3a60292f66919278b7c297ad4f07"
+  dependencies:
+    p-limit "^2.2.0"
+
+p-try@^2.0.0:
+  version "2.2.0"
+  resolved "https://registry.yarnpkg.com/p-try/-/p-try-2.2.0.tgz#cb2868540e313d61de58fafbe35ce9004d5540e6"
+
 package-json@^4.0.0:
   version "4.0.1"
   resolved "https://registry.yarnpkg.com/package-json/-/package-json-4.0.1.tgz#8869a0401253661c4c4ca3da6c2121ed555f5eed"
@@ -5325,6 +5553,10 @@ path-exists@^3.0.0:
   version "3.0.0"
   resolved "https://registry.yarnpkg.com/path-exists/-/path-exists-3.0.0.tgz#ce0ebeaa5f78cb18925ea7d810d7b59b010fd515"
 
+path-exists@^4.0.0:
+  version "4.0.0"
+  resolved "https://registry.yarnpkg.com/path-exists/-/path-exists-4.0.0.tgz#513bdbe2d3b95d7762e8c1137efa195c6c61b5b3"
+
 path-is-absolute@^1.0.0, path-is-absolute@^1.0.1:
   version "1.0.1"
   resolved "https://registry.yarnpkg.com/path-is-absolute/-/path-is-absolute-1.0.1.tgz#174b9268735534ffbc7ace6bf53a5a9e1b5c5f5f"
@@ -5341,6 +5573,10 @@ path-parse@^1.0.5:
   version "1.0.5"
   resolved "https://registry.yarnpkg.com/path-parse/-/path-parse-1.0.5.tgz#3c1adf871ea9cd6c9431b6ea2bd74a0ff055c4c1"
 
+path-parse@^1.0.6:
+  version "1.0.6"
+  resolved "https://registry.yarnpkg.com/path-parse/-/path-parse-1.0.6.tgz#d62dbb5679405d72c4737ec58600e9ddcf06d24c"
+
 path-platform@~0.11.15:
   version "0.11.15"
   resolved "https://registry.yarnpkg.com/path-platform/-/path-platform-0.11.15.tgz#e864217f74c36850f0852b78dc7bf7d4a5721bf2"
@@ -5992,6 +6228,10 @@ resolve-from@^2.0.0:
   version "2.0.0"
   resolved "https://registry.yarnpkg.com/resolve-from/-/resolve-from-2.0.0.tgz#9480ab20e94ffa1d9e80a804c7ea147611966b57"
 
+resolve-from@^5.0.0:
+  version "5.0.0"
+  resolved "https://registry.yarnpkg.com/resolve-from/-/resolve-from-5.0.0.tgz#c35225843df8f776df21c57557bc087e9dfdfc69"
+
 resolve-url@^0.2.1:
   version "0.2.1"
   resolved "https://registry.yarnpkg.com/resolve-url/-/resolve-url-0.2.1.tgz#2c637fe77c893afd2a663fe21aa9080068e2052a"
@@ -6006,6 +6246,12 @@ resolve@^1.1.3, resolve@^1.1.6, resolve@^1.2.0, resolve@^1.3.3:
   dependencies:
     path-parse "^1.0.5"
 
+resolve@^1.3.2:
+  version "1.14.1"
+  resolved "https://registry.yarnpkg.com/resolve/-/resolve-1.14.1.tgz#9e018c540fcf0c427d678b9931cbf45e984bcaff"
+  dependencies:
+    path-parse "^1.0.6"
+
 restore-cursor@^1.0.1:
   version "1.0.1"
   resolved "https://registry.yarnpkg.com/restore-cursor/-/restore-cursor-1.0.1.tgz#34661f46886327fed2991479152252df92daa541"
@@ -6208,6 +6454,10 @@ semver@5.3.0:
   version "5.3.0"
   resolved "https://registry.yarnpkg.com/semver/-/semver-5.3.0.tgz#9b2ce5d3de02d17c6012ad326aa6b4d0cf54f94f"
 
+semver@^6.3.0:
+  version "6.3.0"
+  resolved "https://registry.yarnpkg.com/semver/-/semver-6.3.0.tgz#ee0a64c8af5e8ceea67687b133761e1becbd1d3d"
+
 semver@~4.3.3:
   version "4.3.6"
   resolved "https://registry.yarnpkg.com/semver/-/semver-4.3.6.tgz#300bc6e0e86374f7ba61068b5b1ecd57fc6532da"
@@ -6472,7 +6722,7 @@ source-map@^0.4.4, source-map@~0.4.1:
   dependencies:
     amdefine ">=0.0.4"
 
-source-map@^0.5.1, source-map@^0.5.3, source-map@^0.5.6, source-map@~0.5.1:
+source-map@^0.5.0, source-map@^0.5.1, source-map@^0.5.3, source-map@^0.5.6, source-map@~0.5.1:
   version "0.5.7"
   resolved "https://registry.yarnpkg.com/source-map/-/source-map-0.5.7.tgz#8a039d2d1021d22d1ea14c80d8ea468ba2ef3fcc"
 
@@ -6820,6 +7070,14 @@ test-exclude@^4.1.1:
     read-pkg-up "^1.0.1"
     require-main-filename "^1.0.1"
 
+test-exclude@^6.0.0:
+  version "6.0.0"
+  resolved "https://registry.yarnpkg.com/test-exclude/-/test-exclude-6.0.0.tgz#04a8698661d805ea6fa293b6cb9e63ac044ef15e"
+  dependencies:
+    "@istanbuljs/schema" "^0.1.2"
+    glob "^7.1.4"
+    minimatch "^3.0.4"
+
 testing@^0.2.3:
   version "0.2.3"
   resolved "https://registry.yarnpkg.com/testing/-/testing-0.2.3.tgz#33b768f35590475c506796d8b1f7e2a8921a2aec"
@@ -6914,6 +7172,10 @@ to-fast-properties@^1.0.3:
   version "1.0.3"
   resolved "https://registry.yarnpkg.com/to-fast-properties/-/to-fast-properties-1.0.3.tgz#b83571fa4d8c25b82e231b06e3a3055de4ca1a47"
 
+to-fast-properties@^2.0.0:
+  version "2.0.0"
+  resolved "https://registry.yarnpkg.com/to-fast-properties/-/to-fast-properties-2.0.0.tgz#dc5e698cbd079265bc73e0377681a4e4e83f616e"
+
 to-object-path@^0.3.0:
   version "0.3.0"
   resolved "https://registry.yarnpkg.com/to-object-path/-/to-object-path-0.3.0.tgz#297588b7b0e7e0ac08e04e672f85c1f4999e17af"