diff --git a/package-lock.json b/package-lock.json
index e71d4d0..e95e99f 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -13,6 +13,329 @@
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@@ -61,20 +384,832 @@
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@@ -3159,6 +4509,7 @@
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@@ -3188,7 +4539,8 @@
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@@ -3199,7 +4551,8 @@
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@@ -3237,6 +4590,7 @@
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@@ -3281,6 +4635,7 @@
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@@ -3288,7 +4643,8 @@
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@@ -3312,6 +4668,7 @@
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@@ -3345,6 +4702,7 @@
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@@ -3355,6 +4713,7 @@
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@@ -3369,6 +4728,7 @@
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@@ -3383,6 +4743,7 @@
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@@ -3438,7 +4799,8 @@
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@@ -3467,7 +4829,8 @@
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@@ -3488,6 +4851,12 @@
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       "dev": true
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+      "resolved": "https://registry.npmjs.org/get-package-type/-/get-package-type-0.1.0.tgz",
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+    },
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@@ -5028,6 +6403,32 @@
             "color-convert": "1.9.1"
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+          "resolved": "https://registry.npmjs.org/babel-jest/-/babel-jest-21.2.0.tgz",
+          "integrity": "sha512-O0W2qLoWu1QOoOGgxiR2JID4O6WSpxPiQanrkyi9SSlM0PJ60Ptzlck47lhtnr9YZO3zYOsxHwnyeWJ6AffoBQ==",
+          "dev": true,
+          "requires": {
+            "babel-plugin-istanbul": "^4.0.0",
+            "babel-preset-jest": "^21.2.0"
+          }
+        },
+        "babel-plugin-jest-hoist": {
+          "version": "21.2.0",
+          "resolved": "https://registry.npmjs.org/babel-plugin-jest-hoist/-/babel-plugin-jest-hoist-21.2.0.tgz",
+          "integrity": "sha512-yi5QuiVyyvhBUDLP4ButAnhYzkdrUwWDtvUJv71hjH3fclhnZg4HkDeqaitcR2dZZx/E67kGkRcPVjtVu+SJfQ==",
+          "dev": true
+        },
+        "babel-preset-jest": {
+          "version": "21.2.0",
+          "resolved": "https://registry.npmjs.org/babel-preset-jest/-/babel-preset-jest-21.2.0.tgz",
+          "integrity": "sha512-hm9cBnr2h3J7yXoTtAVV0zg+3vg0Q/gT2GYuzlreTU0EPkJRtlNgKJJ3tBKEn0+VjAi3JykV6xCJkuUYttEEfA==",
+          "dev": true,
+          "requires": {
+            "babel-plugin-jest-hoist": "^21.2.0",
+            "babel-plugin-syntax-object-rest-spread": "^6.13.0"
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         "chalk": {
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           "resolved": "https://registry.npmjs.org/chalk/-/chalk-2.3.0.tgz",
@@ -5056,6 +6457,24 @@
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+      "version": "27.0.1",
+      "resolved": "https://registry.npmjs.org/jest-serializer/-/jest-serializer-27.0.1.tgz",
+      "integrity": "sha512-svy//5IH6bfQvAbkAEg1s7xhhgHTtXu0li0I2fdKHDsLP2P2MOiscPQIENQep8oU2g2B3jqLyxKKzotZOz4CwQ==",
+      "dev": true,
+      "requires": {
+        "@types/node": "*",
+        "graceful-fs": "^4.2.4"
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+      "dependencies": {
+        "graceful-fs": {
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+          "resolved": "https://registry.npmjs.org/graceful-fs/-/graceful-fs-4.2.6.tgz",
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+        }
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       "resolved": "https://registry.npmjs.org/jest-snapshot/-/jest-snapshot-21.2.1.tgz",
@@ -5190,6 +6609,34 @@
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+      "resolved": "https://registry.npmjs.org/jest-worker/-/jest-worker-27.0.2.tgz",
+      "integrity": "sha512-EoBdilOTTyOgmHXtw/cPc+ZrCA0KJMrkXzkrPGNwLmnvvlN1nj7MPrxpT7m+otSv2e1TLaVffzDnE/LB14zJMg==",
+      "dev": true,
+      "requires": {
+        "@types/node": "*",
+        "merge-stream": "^2.0.0",
+        "supports-color": "^8.0.0"
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+          "version": "4.0.0",
+          "resolved": "https://registry.npmjs.org/has-flag/-/has-flag-4.0.0.tgz",
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+          "dev": true
+        },
+        "supports-color": {
+          "version": "8.1.1",
+          "resolved": "https://registry.npmjs.org/supports-color/-/supports-color-8.1.1.tgz",
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+          "dev": true,
+          "requires": {
+            "has-flag": "^4.0.0"
+          }
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+    },
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       "resolved": "https://registry.npmjs.org/js-tokens/-/js-tokens-3.0.2.tgz",
@@ -5919,7 +7366,7 @@
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-          "resolved": "http://registry.npmjs.org/onetime/-/onetime-1.1.0.tgz",
+          "resolved": "https://registry.npmjs.org/onetime/-/onetime-1.1.0.tgz",
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@@ -6117,7 +7564,7 @@
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-          "resolved": "http://registry.npmjs.org/onetime/-/onetime-1.1.0.tgz",
+          "resolved": "https://registry.npmjs.org/onetime/-/onetime-1.1.0.tgz",
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@@ -6137,7 +7584,8 @@
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-      "dev": true
+      "dev": true,
+      "optional": true
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@@ -6206,6 +7654,12 @@
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       "dev": true
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+      "version": "2.0.0",
+      "resolved": "https://registry.npmjs.org/merge-stream/-/merge-stream-2.0.0.tgz",
+      "integrity": "sha512-abv/qOcuPfk3URPfDzmZU1LKmuw8kT+0nIHvKrKgFrwifol/doWcdA4ZqsWQ8ENrFKkd67Mfpo/LovbIUsbt3w==",
+      "dev": true
+    },
     "micromatch": {
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       "resolved": "https://registry.npmjs.org/micromatch/-/micromatch-2.3.11.tgz",
@@ -6392,6 +7846,12 @@
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       "dev": true
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+    "node-modules-regexp": {
+      "version": "1.0.0",
+      "resolved": "https://registry.npmjs.org/node-modules-regexp/-/node-modules-regexp-1.0.0.tgz",
+      "integrity": "sha1-jZ2+KJZKSsVxLpExZCEHxx6Q7EA=",
+      "dev": true
+    },
     "node-notifier": {
       "version": "5.1.2",
       "resolved": "https://registry.npmjs.org/node-notifier/-/node-notifier-5.1.2.tgz",
@@ -6404,6 +7864,12 @@
         "which": "1.3.0"
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+    "node-releases": {
+      "version": "1.1.72",
+      "resolved": "https://registry.npmjs.org/node-releases/-/node-releases-1.1.72.tgz",
+      "integrity": "sha512-LLUo+PpH3dU6XizX3iVoubUNheF/owjXCZZ5yACDxNnPtgFuludV1ZL3ayK1kVep42Rmm0+R9/Y60NQbZ2bifw==",
+      "dev": true
+    },
     "nomnom": {
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       "resolved": "https://registry.npmjs.org/nomnom/-/nomnom-1.6.2.tgz",
@@ -6689,7 +8155,7 @@
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           "version": "1.1.0",
-          "resolved": "http://registry.npmjs.org/onetime/-/onetime-1.1.0.tgz",
+          "resolved": "https://registry.npmjs.org/onetime/-/onetime-1.1.0.tgz",
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@@ -6761,6 +8227,12 @@
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       "dev": true
     },
+    "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
+    },
     "parse-glob": {
       "version": "3.0.4",
       "resolved": "https://registry.npmjs.org/parse-glob/-/parse-glob-3.0.4.tgz",
@@ -6841,6 +8313,12 @@
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       "dev": true
     },
+    "picomatch": {
+      "version": "2.3.0",
+      "resolved": "https://registry.npmjs.org/picomatch/-/picomatch-2.3.0.tgz",
+      "integrity": "sha512-lY1Q/PiJGC2zOv/z391WOTD+Z02bCgsFfvxoXXf6h7kv9o+WmsmzYqrAwY63sNgOxE4xEdq0WyUnXfKeBrSvYw==",
+      "dev": true
+    },
     "pify": {
       "version": "2.3.0",
       "resolved": "https://registry.npmjs.org/pify/-/pify-2.3.0.tgz",
@@ -6862,6 +8340,15 @@
         "pinkie": "2.0.4"
       }
     },
+    "pirates": {
+      "version": "4.0.1",
+      "resolved": "https://registry.npmjs.org/pirates/-/pirates-4.0.1.tgz",
+      "integrity": "sha512-WuNqLTbMI3tmfef2TKxlQmAiLHKtFhlsCZnPIpuv2Ow0RDVO8lfy1Opf4NUzlMXLjPl+Men7AuVdX6TA+s+uGA==",
+      "dev": true,
+      "requires": {
+        "node-modules-regexp": "^1.0.0"
+      }
+    },
     "please-upgrade-node": {
       "version": "3.1.1",
       "resolved": "https://registry.npmjs.org/please-upgrade-node/-/please-upgrade-node-3.1.1.tgz",
@@ -7316,6 +8803,12 @@
         "path-parse": "1.0.5"
       }
     },
+    "resolve-from": {
+      "version": "5.0.0",
+      "resolved": "https://registry.npmjs.org/resolve-from/-/resolve-from-5.0.0.tgz",
+      "integrity": "sha512-qYg9KP24dD5qka9J47d0aVky0N+b4fTU89LN9iDnjB5waksiC49rvMB0PrUJQGoTmH50XPiqOvAjDfaijGxYZw==",
+      "dev": true
+    },
     "resolve-url": {
       "version": "0.2.1",
       "resolved": "https://registry.npmjs.org/resolve-url/-/resolve-url-0.2.1.tgz",
@@ -8124,6 +9617,15 @@
         "prelude-ls": "1.1.2"
       }
     },
+    "typedarray-to-buffer": {
+      "version": "3.1.5",
+      "resolved": "https://registry.npmjs.org/typedarray-to-buffer/-/typedarray-to-buffer-3.1.5.tgz",
+      "integrity": "sha512-zdu8XMNEDepKKR+XYOXAVPtWui0ly0NtohUscw+UmaHiAWT8hrV1rr//H6V+0DvJ3OQ19S979M0laLfX8rm82Q==",
+      "dev": true,
+      "requires": {
+        "is-typedarray": "^1.0.0"
+      }
+    },
     "ua-parser-js": {
       "version": "0.7.17",
       "resolved": "https://registry.npmjs.org/ua-parser-js/-/ua-parser-js-0.7.17.tgz",
diff --git a/package.json b/package.json
index 2e8e02c..f065cb8 100644
--- a/package.json
+++ b/package.json
@@ -43,7 +43,7 @@
   "devDependencies": {
     "all-contributors-cli": "^4.11.2",
     "babel-core": "^6.26.0",
-    "babel-jest": "^21.2.0",
+    "babel-jest": "^27.0.2",
     "babel-plugin-external-helpers": "^6.22.0",
     "babel-plugin-transform-class-properties": "^6.24.1",
     "babel-plugin-transform-object-rest-spread": "^6.26.0",