diff --git a/package-lock.json b/package-lock.json
index 65e9604e..f3d9968a 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -77,9 +77,9 @@
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@@ -1833,6 +1839,12 @@
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@@ -1938,9 +1950,9 @@
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@@ -2418,6 +2453,12 @@
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@@ -2550,12 +2580,6 @@
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-      "integrity": "sha1-tDLdM1i2NM914eRmQ2gkBTPB3b4=",
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-          "integrity": "sha1-o7MKXE8ZkYMWeqq5O+764937ZU8=",
-          "dev": true
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-        "json-schema-traverse": {
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-          "integrity": "sha1-NJptRMU6Ud6JtAgFxdXlm0F9M0A=",
+          "version": "3.1.1",
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-          "resolved": "https://registry.npmjs.org/strip-ansi/-/strip-ansi-4.0.0.tgz",
-          "integrity": "sha1-qEeQIusaw2iocTibY1JixQXuNo8=",
-          "dev": true,
-          "requires": {
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-        "supports-color": {
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-          "resolved": "https://registry.npmjs.org/supports-color/-/supports-color-5.5.0.tgz",
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-          "dev": true,
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@@ -8956,6 +9074,12 @@
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       }
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+    "tslib": {
+      "version": "1.11.1",
+      "resolved": "https://registry.npmjs.org/tslib/-/tslib-1.11.1.tgz",
+      "integrity": "sha512-aZW88SY8kQbU7gpV19lN24LtXh/yD4ZZg6qieAJDDg+YBsJcSmLGK9QpnUjAKVG/xefmvJGd1WUmfpT/g6AJGA==",
+      "dev": true
+    },
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@@ -8992,16 +9116,10 @@
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       "dev": true
     },
-    "typedarray": {
-      "version": "0.0.6",
-      "resolved": "https://registry.npmjs.org/typedarray/-/typedarray-0.0.6.tgz",
-      "integrity": "sha1-hnrHTjhkGHsdPUfZlqeOxciDB3c=",
-      "dev": true
-    },
     "typescript": {
-      "version": "3.0.1",
-      "resolved": "https://registry.npmjs.org/typescript/-/typescript-3.0.1.tgz",
-      "integrity": "sha512-zQIMOmC+372pC/CCVLqnQ0zSBiY7HHodU7mpQdjiZddek4GMj31I3dUJ7gAs9o65X7mnRma6OokOkc6f9jjfBg==",
+      "version": "3.8.3",
+      "resolved": "https://registry.npmjs.org/typescript/-/typescript-3.8.3.tgz",
+      "integrity": "sha512-MYlEfn5VrLNsgudQTVJeNaQFUAI7DkhnOjdpAp4T+ku1TfQClewlbSuTVHiA+8skNBgaf02TL/kLOvig4y3G8w==",
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@@ -9140,7 +9258,8 @@
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-      "dev": true
+      "dev": true,
+      "optional": true
     },
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@@ -9157,6 +9276,12 @@
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     },
+    "v8-compile-cache": {
+      "version": "2.1.0",
+      "resolved": "https://registry.npmjs.org/v8-compile-cache/-/v8-compile-cache-2.1.0.tgz",
+      "integrity": "sha512-usZBT3PW+LOjM25wbqIlZwPeJV+3OSz3M1k1Ws8snlW39dZyYL9lOGC5FgPVHfk0jKmjiDV8Z0mIbVQPiwFs7g==",
+      "dev": true
+    },
     "validate-npm-package-license": {
       "version": "3.0.4",
       "resolved": "https://registry.npmjs.org/validate-npm-package-license/-/validate-npm-package-license-3.0.4.tgz",
@@ -9298,6 +9423,12 @@
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+    "word-wrap": {
+      "version": "1.2.3",
+      "resolved": "https://registry.npmjs.org/word-wrap/-/word-wrap-1.2.3.tgz",
+      "integrity": "sha512-Hz/mrNwitNRh/HUAtM/VT/5VH+ygD6DV7mYKZAtHOrbs8U7lvPS6xf7EJKMF0uW1KJCl0H701g3ZGus+muE5vQ==",
+      "dev": true
+    },
     "wordwrap": {
       "version": "1.0.0",
       "resolved": "https://registry.npmjs.org/wordwrap/-/wordwrap-1.0.0.tgz",
@@ -9348,9 +9479,9 @@
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     "write": {
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-      "resolved": "https://registry.npmjs.org/write/-/write-0.2.1.tgz",
-      "integrity": "sha1-X8A4KOJkzqP+kUVUdvejxWbLB1c=",
+      "version": "1.0.3",
+      "resolved": "https://registry.npmjs.org/write/-/write-1.0.3.tgz",
+      "integrity": "sha512-/lg70HAjtkUgWPVZhZcm+T4hkL8Zbtp1nFNOn3lRrxnlv50SRBv7cR7RqR+GMsd3hUXy9hWBo4CHTbFTcOYwig==",
       "dev": true,
       "requires": {
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diff --git a/package.json b/package.json
index 999b438b..60868327 100644
--- a/package.json
+++ b/package.json
@@ -49,11 +49,11 @@
     "@babel/runtime": "^7.6.3",
     "@rollup/plugin-node-resolve": "^6.0.0",
     "@rollup/plugin-replace": "^2.2.0",
-    "babel-eslint": "10.0.3",
+    "babel-eslint": "^10.1.0",
     "babel-jest": "^24.9.0",
-    "chai": "4.1.2",
-    "cross-env": "5.1.4",
-    "eslint": "^4.19.1",
+    "chai": "^4.1.2",
+    "cross-env": "^5.1.4",
+    "eslint": "^6.8.0",
     "eslint-config-prettier": "^2.9.0",
     "eslint-config-xo": "^0.20.1",
     "eslint-formatter-pretty": "^1.3.0",
@@ -65,7 +65,7 @@
     "jsdom": "^11.11.0",
     "prettier": "1.11.1",
     "readline-sync": "1.4.9",
-    "rimraf": "2.6.2",
+    "rimraf": "^3.0.2",
     "rollup": "^1.26.0",
     "rollup-plugin-babel": "^4.3.3",
     "rollup-plugin-commonjs": "^10.1.0",
@@ -73,14 +73,14 @@
     "rollup-plugin-node-globals": "^1.4.0",
     "rollup-plugin-terser": "^5.1.2",
     "rollup-plugin-uglify": "^6.0.3",
-    "semver": "5.5.0",
-    "semver-compare": "1.0.0",
+    "semver": "^7.1.3",
+    "semver-compare": "^1.0.0",
     "sinon": "7.2.7",
-    "typescript": "3.0.1"
+    "typescript": "^3.7.5"
   },
   "dependencies": {
     "escape-string-regexp": "^1.0.5",
-    "launchdarkly-js-sdk-common": "3.2.3"
+    "launchdarkly-js-sdk-common": "3.2.5"
   },
   "repository": {
     "type": "git",
diff --git a/src/httpRequest.js b/src/httpRequest.js
index 32721626..6d71260f 100644
--- a/src/httpRequest.js
+++ b/src/httpRequest.js
@@ -27,7 +27,7 @@ export default function newHttpRequest(method, url, headers, body, pageIsClosing
   const xhr = new window.XMLHttpRequest();
   xhr.open(method, url, !pageIsClosing);
   for (const key in headers || {}) {
-    if (headers.hasOwnProperty(key)) {
+    if (Object.prototype.hasOwnProperty.call(headers, key)) {
       xhr.setRequestHeader(key, headers[key]);
     }
   }