diff --git a/package-lock.json b/package-lock.json
index 8ddc3b1..2f81198 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -710,13 +710,13 @@
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+          "resolved": "https://registry.npmjs.org/ms/-/ms-2.1.2.tgz",
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@@ -821,9 +831,9 @@
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-      "integrity": "sha512-qWAZcWh4XE/RwzLJejfcofscgMc9CamR6Tn1+XRXNzrvUSSbiAjGOI/fggztjIi7y9VLPqnICMIPiGyr8JaZ0A==",
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+      "resolved": "https://registry.npmjs.org/espree/-/espree-6.0.0.tgz",
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@@ -1264,9 +1274,9 @@
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+      "resolved": "https://registry.npmjs.org/globals/-/globals-11.12.0.tgz",
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+      "resolved": "https://registry.npmjs.org/inquirer/-/inquirer-6.4.1.tgz",
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@@ -1424,7 +1434,7 @@
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@@ -2205,9 +2215,9 @@
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+          "resolved": "https://registry.npmjs.org/callsites/-/callsites-3.1.0.tgz",
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@@ -2248,12 +2258,6 @@
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@@ -2498,9 +2502,9 @@
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+      "resolved": "https://registry.npmjs.org/rxjs/-/rxjs-6.5.2.tgz",
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@@ -2819,9 +2823,9 @@
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@@ -2926,9 +2930,9 @@
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-      "resolved": "https://registry.npmjs.org/tslib/-/tslib-1.9.3.tgz",
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+      "resolved": "https://registry.npmjs.org/tslib/-/tslib-1.10.0.tgz",
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diff --git a/package.json b/package.json
index ac66a59..592db7d 100644
--- a/package.json
+++ b/package.json
@@ -35,7 +35,7 @@
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   },
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+    "eslint": "^6.0.0",
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     "mocha": "^6.0.0",
     "sinon": "^7.2.2",