diff --git a/package-lock.json b/package-lock.json
index 505c71db..88ba43f6 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -24,18 +24,48 @@
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+            "resolved": "https://registry.npmjs.org/acorn-globals/-/acorn-globals-4.3.4.tgz",
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+            "dev": true,
+            "requires": {
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+                }
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+        "acorn-walk": {
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+            "resolved": "https://registry.npmjs.org/acorn-walk/-/acorn-walk-6.2.0.tgz",
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+        },
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@@ -81,12 +111,45 @@
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+            "resolved": "https://registry.npmjs.org/asn1/-/asn1-0.2.4.tgz",
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+            "dev": true,
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+            "integrity": "sha1-8S4PPF13sLHN2RRpQuTpbB5N1SU=",
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+            "resolved": "https://registry.npmjs.org/asynckit/-/asynckit-0.4.0.tgz",
+            "integrity": "sha1-x57Zf380y48robyXkLzDZkdLS3k=",
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+            "integrity": "sha1-tG6JCTSpWR8tL2+G1+ap8bP+dqg=",
+            "dev": true
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+        "bcrypt-pbkdf": {
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+            "resolved": "https://registry.npmjs.org/bcrypt-pbkdf/-/bcrypt-pbkdf-1.0.2.tgz",
+            "integrity": "sha1-pDAdOJtqQ/m2f/PKEaP2Y342Dp4=",
+            "dev": true,
+            "requires": {
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@@ -109,12 +181,24 @@
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+            "resolved": "https://registry.npmjs.org/caseless/-/caseless-0.12.0.tgz",
+            "integrity": "sha1-G2gcIf+EAzyCZUMJBolCDRhxUdw=",
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@@ -162,6 +246,15 @@
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+            "resolved": "https://registry.npmjs.org/combined-stream/-/combined-stream-1.0.8.tgz",
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+            "dev": true,
+            "requires": {
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+        "core-util-is": {
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@@ -195,6 +294,77 @@
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+            "dev": true,
+            "requires": {
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+            "dependencies": {
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+                    "resolved": "https://registry.npmjs.org/cssom/-/cssom-0.3.8.tgz",
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+                    "dev": true
+                }
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+            "resolved": "https://registry.npmjs.org/dashdash/-/dashdash-1.14.1.tgz",
+            "integrity": "sha1-hTz6D3y+L+1d4gMmuN1YEDX24vA=",
+            "dev": true,
+            "requires": {
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+            "version": "2.0.0",
+            "resolved": "https://registry.npmjs.org/data-urls/-/data-urls-2.0.0.tgz",
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+            "dev": true,
+            "requires": {
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+                "whatwg-mimetype": "^2.3.0",
+                "whatwg-url": "^8.0.0"
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+                    "dev": true,
+                    "requires": {
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+                    "resolved": "https://registry.npmjs.org/webidl-conversions/-/webidl-conversions-5.0.0.tgz",
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+                    "resolved": "https://registry.npmjs.org/whatwg-url/-/whatwg-url-8.0.0.tgz",
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+                        "tr46": "^2.0.0",
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@@ -204,12 +374,24 @@
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@@ -228,6 +410,16 @@
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+            "resolved": "https://registry.npmjs.org/ecc-jsbn/-/ecc-jsbn-0.1.2.tgz",
+            "integrity": "sha1-OoOpBOVDUyh4dMVkt1SThoSamMk=",
+            "dev": true,
+            "requires": {
+                "jsbn": "~0.1.0",
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@@ -240,6 +432,19 @@
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+            "requires": {
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+                "estraverse": "^4.2.0",
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+            "resolved": "https://registry.npmjs.org/extend/-/extend-3.0.2.tgz",
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@@ -374,6 +585,12 @@
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@@ -481,12 +724,48 @@
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+            "dev": true,
+            "requires": {
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+            "dev": true,
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@@ -555,6 +834,12 @@
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@@ -576,18 +861,36 @@
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+            "resolved": "https://registry.npmjs.org/uuid/-/uuid-3.4.0.tgz",
+            "integrity": "sha512-HjSDRw6gZE5JMggctHBcjVak08+KEVhSIiDzFnT9S9aegmp85S/bReBVTb4QTFaRNptJ9kuYaNhnbNEOkbKb/A==",
+            "dev": true
+        },
         "v8-compile-cache": {
             "version": "2.1.0",
             "resolved": "https://registry.npmjs.org/v8-compile-cache/-/v8-compile-cache-2.1.0.tgz",
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             "dev": true
         },
+        "verror": {
+            "version": "1.10.0",
+            "resolved": "https://registry.npmjs.org/verror/-/verror-1.10.0.tgz",
+            "integrity": "sha1-OhBcoXBTr1XW4nDB+CiGguGNpAA=",
+            "dev": true,
+            "requires": {
+                "assert-plus": "^1.0.0",
+                "core-util-is": "1.0.2",
+                "extsprintf": "^1.2.0"
+            }
+        },
+        "w3c-hr-time": {
+            "version": "1.0.1",
+            "resolved": "https://registry.npmjs.org/w3c-hr-time/-/w3c-hr-time-1.0.1.tgz",
+            "integrity": "sha1-gqwr/2PZUOqeMYmlimViX+3xkEU=",
+            "dev": true,
+            "requires": {
+                "browser-process-hrtime": "^0.1.2"
+            }
+        },
+        "w3c-xmlserializer": {
+            "version": "2.0.0",
+            "resolved": "https://registry.npmjs.org/w3c-xmlserializer/-/w3c-xmlserializer-2.0.0.tgz",
+            "integrity": "sha512-4tzD0mF8iSiMiNs30BiLO3EpfGLZUT2MSX/G+o7ZywDzliWQ3OPtTZ0PTC3B3ca1UAf4cJMHB+2Bf56EriJuRA==",
+            "dev": true,
+            "requires": {
+                "xml-name-validator": "^3.0.0"
+            }
+        },
         "webidl-conversions": {
             "version": "4.0.2",
             "resolved": "https://registry.npmjs.org/webidl-conversions/-/webidl-conversions-4.0.2.tgz",
             "integrity": "sha512-YQ+BmxuTgd6UXZW3+ICGfyqRyHXVlD5GtQr5+qjiNW7bF0cqrzX500HVXPBOvgXb5YnzDd+h0zqyv61KUD7+Sg==",
             "dev": true
         },
+        "whatwg-encoding": {
+            "version": "1.0.5",
+            "resolved": "https://registry.npmjs.org/whatwg-encoding/-/whatwg-encoding-1.0.5.tgz",
+            "integrity": "sha512-b5lim54JOPN9HtzvK9HFXvBma/rnfFeqsic0hSpjtDbVxR3dJKLc+KB4V6GgiGOvl7CY/KNh8rxSo9DKQrnUEw==",
+            "dev": true,
+            "requires": {
+                "iconv-lite": "0.4.24"
+            }
+        },
+        "whatwg-mimetype": {
+            "version": "2.3.0",
+            "resolved": "https://registry.npmjs.org/whatwg-mimetype/-/whatwg-mimetype-2.3.0.tgz",
+            "integrity": "sha512-M4yMwr6mAnQz76TbJm914+gPpB/nCwvZbJU28cUD6dR004SAxDLOOSUaB1JDRqLtaOV/vi0IC5lEAGFgrjGv/g==",
+            "dev": true
+        },
         "whatwg-url": {
             "version": "7.1.0",
             "resolved": "https://registry.npmjs.org/whatwg-url/-/whatwg-url-7.1.0.tgz",
@@ -1114,6 +1768,24 @@
             "requires": {
                 "mkdirp": "^0.5.1"
             }
+        },
+        "ws": {
+            "version": "7.2.1",
+            "resolved": "https://registry.npmjs.org/ws/-/ws-7.2.1.tgz",
+            "integrity": "sha512-sucePNSafamSKoOqoNfBd8V0StlkzJKL2ZAhGQinCfNQ+oacw+Pk7lcdAElecBF2VkLNZRiIb5Oi1Q5lVUVt2A==",
+            "dev": true
+        },
+        "xml-name-validator": {
+            "version": "3.0.0",
+            "resolved": "https://registry.npmjs.org/xml-name-validator/-/xml-name-validator-3.0.0.tgz",
+            "integrity": "sha512-A5CUptxDsvxKJEU3yO6DuWBSJz/qizqzJKOMIfUJHETbBw/sFaDxgd6fxm1ewUaM0jZ444Fc5vC5ROYurg/4Pw==",
+            "dev": true
+        },
+        "xmlchars": {
+            "version": "2.2.0",
+            "resolved": "https://registry.npmjs.org/xmlchars/-/xmlchars-2.2.0.tgz",
+            "integrity": "sha512-JZnDKK8B0RCDw84FNdDAIpZK+JuJw+s7Lz8nksI7SIuU3UXJJslUthsi+uWBUYOwPFwW7W7PRLRfUKpxjtjFCw==",
+            "dev": true
         }
     }
 }
diff --git a/package.json b/package.json
index 2bbc6a79..a6994eb3 100644
--- a/package.json
+++ b/package.json
@@ -28,6 +28,7 @@
     "devDependencies": {
         "eslint": "^6.8.0",
         "eslint-plugin-no-unsanitized": "^3.0.2",
-        "fake-indexeddb": "^3.0.0"
+        "fake-indexeddb": "^3.0.0",
+        "jsdom": "^16.2.0"
     }
 }