diff --git a/gulpfile.js b/gulpfile.js
index bdf2344..b1f5d0e 100644
--- a/gulpfile.js
+++ b/gulpfile.js
@@ -62,7 +62,7 @@ gulp.task('css', gulp.parallel('css-themes', 'css-print', 'css-core'))
 
 gulp.task('test', gulp.series(
 
-    () => gulp.src(['./js/reveal.js', 'gulpfile.js']).pipe(eslint()).pipe(eslint.format())
+    () => gulp.src(['./js/**', 'gulpfile.js']).pipe(eslint()).pipe(eslint.format())
     // () => gulp.src(['./test/*.html']).pipe(qunit())
 
 ))
@@ -90,7 +90,7 @@ gulp.task('serve', () => {
         livereload: true
     })
 
-    gulp.watch(['js/**/*'], gulp.series('js', 'test'))
+    gulp.watch(['js/**'], gulp.series('js', 'test'))
 
     gulp.watch([
         'css/theme/source/*.{sass,scss}',
diff --git a/package-lock.json b/package-lock.json
index 32c2880..b16be13 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -1625,6 +1625,20 @@
       "integrity": "sha512-wMHVg2EOHaMRxbzgFJ9gtjOOCrI80OHLG14rxi28XwOW8ux6IiEbRCGGGqCtdAIg4FQCbW20k9RsT4y3gJlFug==",
       "dev": true
     },
+    "babel-eslint": {
+      "version": "10.1.0",
+      "resolved": "https://registry.npmjs.org/babel-eslint/-/babel-eslint-10.1.0.tgz",
+      "integrity": "sha512-ifWaTHQ0ce+448CYop8AdrQiBsGrnC+bMgfyKFdi6EsPLTAWG+QfyDeM6OH+FmWnKvEq5NnBMLvlBUPKQZoDSg==",
+      "dev": true,
+      "requires": {
+        "@babel/code-frame": "^7.0.0",
+        "@babel/parser": "^7.7.0",
+        "@babel/traverse": "^7.7.0",
+        "@babel/types": "^7.7.0",
+        "eslint-visitor-keys": "^1.0.0",
+        "resolve": "^1.12.0"
+      }
+    },
     "babel-plugin-dynamic-import-node": {
       "version": "2.3.0",
       "resolved": "https://registry.npmjs.org/babel-plugin-dynamic-import-node/-/babel-plugin-dynamic-import-node-2.3.0.tgz",
@@ -3853,25 +3867,29 @@
       "dependencies": {
         "abbrev": {
           "version": "1.1.1",
-          "bundled": true,
+          "resolved": "https://registry.npmjs.org/abbrev/-/abbrev-1.1.1.tgz",
+          "integrity": "sha512-nne9/IiQ/hzIhY6pdDnbBtz7DjPTKrY00P/zvPSm5pOFkl6xuGrGnXn/VtTNNfNtAfZ9/1RtehkszU9qcTii0Q==",
           "dev": true,
           "optional": true
         },
         "ansi-regex": {
           "version": "2.1.1",
-          "bundled": true,
+          "resolved": "https://registry.npmjs.org/ansi-regex/-/ansi-regex-2.1.1.tgz",
+          "integrity": "sha1-w7M6te42DYbg5ijwRorn7yfWVN8=",
           "dev": true,
           "optional": true
         },
         "aproba": {
           "version": "1.2.0",
-          "bundled": true,
+          "resolved": "https://registry.npmjs.org/aproba/-/aproba-1.2.0.tgz",
+          "integrity": "sha512-Y9J6ZjXtoYh8RnXVCMOU/ttDmk1aBjunq9vO0ta5x85WDQiQfUF9sIPBITdbiiIVcBo03Hi3jMxigBtsddlXRw==",
           "dev": true,
           "optional": true
         },
         "are-we-there-yet": {
           "version": "1.1.5",
-          "bundled": true,
+          "resolved": "https://registry.npmjs.org/are-we-there-yet/-/are-we-there-yet-1.1.5.tgz",
+          "integrity": "sha512-5hYdAkZlcG8tOLujVDTgCT+uPX0VnpAH28gWsLfzpXYm7wP6mp5Q/gYyR7YQ0cKVJcXJnl3j2kpBan13PtQf6w==",
           "dev": true,
           "optional": true,
           "requires": {
@@ -3881,13 +3899,15 @@
         },
         "balanced-match": {
           "version": "1.0.0",
-          "bundled": true,
+          "resolved": "https://registry.npmjs.org/balanced-match/-/balanced-match-1.0.0.tgz",
+          "integrity": "sha1-ibTRmasr7kneFk6gK4nORi1xt2c=",
           "dev": true,
           "optional": true
         },
         "brace-expansion": {
           "version": "1.1.11",
-          "bundled": true,
+          "resolved": "https://registry.npmjs.org/brace-expansion/-/brace-expansion-1.1.11.tgz",
+          "integrity": "sha512-iCuPHDFgrHX7H2vEI/5xpz07zSHB00TpugqhmYtVmMO6518mCuRMoOYFldEBl0g187ufozdaHgWKcYFb61qGiA==",
           "dev": true,
           "optional": true,
           "requires": {
@@ -3897,37 +3917,43 @@
         },
         "chownr": {
           "version": "1.1.3",
-          "bundled": true,
+          "resolved": "https://registry.npmjs.org/chownr/-/chownr-1.1.3.tgz",
+          "integrity": "sha512-i70fVHhmV3DtTl6nqvZOnIjbY0Pe4kAUjwHj8z0zAdgBtYrJyYwLKCCuRBQ5ppkyL0AkN7HKRnETdmdp1zqNXw==",
           "dev": true,
           "optional": true
         },
         "code-point-at": {
           "version": "1.1.0",
-          "bundled": true,
+          "resolved": "https://registry.npmjs.org/code-point-at/-/code-point-at-1.1.0.tgz",
+          "integrity": "sha1-DQcLTQQ6W+ozovGkDi7bPZpMz3c=",
           "dev": true,
           "optional": true
         },
         "concat-map": {
           "version": "0.0.1",
-          "bundled": true,
+          "resolved": "https://registry.npmjs.org/concat-map/-/concat-map-0.0.1.tgz",
+          "integrity": "sha1-2Klr13/Wjfd5OnMDajug1UBdR3s=",
           "dev": true,
           "optional": true
         },
         "console-control-strings": {
           "version": "1.1.0",
-          "bundled": true,
+          "resolved": "https://registry.npmjs.org/console-control-strings/-/console-control-strings-1.1.0.tgz",
+          "integrity": "sha1-PXz0Rk22RG6mRL9LOVB/mFEAjo4=",
           "dev": true,
           "optional": true
         },
         "core-util-is": {
           "version": "1.0.2",
-          "bundled": true,
+          "resolved": "https://registry.npmjs.org/core-util-is/-/core-util-is-1.0.2.tgz",
+          "integrity": "sha1-tf1UIgqivFq1eqtxQMlAdUUDwac=",
           "dev": true,
           "optional": true
         },
         "debug": {
           "version": "3.2.6",
-          "bundled": true,
+          "resolved": "https://registry.npmjs.org/debug/-/debug-3.2.6.tgz",
+          "integrity": "sha512-mel+jf7nrtEl5Pn1Qx46zARXKDpBbvzezse7p7LqINmdoIk8PYP5SySaxEmYv6TZ0JyEKA1hsCId6DIhgITtWQ==",
           "dev": true,
           "optional": true,
           "requires": {
@@ -3936,25 +3962,29 @@
         },
         "deep-extend": {
           "version": "0.6.0",
-          "bundled": true,
+          "resolved": "https://registry.npmjs.org/deep-extend/-/deep-extend-0.6.0.tgz",
+          "integrity": "sha512-LOHxIOaPYdHlJRtCQfDIVZtfw/ufM8+rVj649RIHzcm/vGwQRXFt6OPqIFWsm2XEMrNIEtWR64sY1LEKD2vAOA==",
           "dev": true,
           "optional": true
         },
         "delegates": {
           "version": "1.0.0",
-          "bundled": true,
+          "resolved": "https://registry.npmjs.org/delegates/-/delegates-1.0.0.tgz",
+          "integrity": "sha1-hMbhWbgZBP3KWaDvRM2HDTElD5o=",
           "dev": true,
           "optional": true
         },
         "detect-libc": {
           "version": "1.0.3",
-          "bundled": true,
+          "resolved": "https://registry.npmjs.org/detect-libc/-/detect-libc-1.0.3.tgz",
+          "integrity": "sha1-+hN8S9aY7fVc1c0CrFWfkaTEups=",
           "dev": true,
           "optional": true
         },
         "fs-minipass": {
           "version": "1.2.7",
-          "bundled": true,
+          "resolved": "https://registry.npmjs.org/fs-minipass/-/fs-minipass-1.2.7.tgz",
+          "integrity": "sha512-GWSSJGFy4e9GUeCcbIkED+bgAoFyj7XF1mV8rma3QW4NIqX9Kyx79N/PF61H5udOV3aY1IaMLs6pGbH71nlCTA==",
           "dev": true,
           "optional": true,
           "requires": {
@@ -3963,13 +3993,15 @@
         },
         "fs.realpath": {
           "version": "1.0.0",
-          "bundled": true,
+          "resolved": "https://registry.npmjs.org/fs.realpath/-/fs.realpath-1.0.0.tgz",
+          "integrity": "sha1-FQStJSMVjKpA20onh8sBQRmU6k8=",
           "dev": true,
           "optional": true
         },
         "gauge": {
           "version": "2.7.4",
-          "bundled": true,
+          "resolved": "https://registry.npmjs.org/gauge/-/gauge-2.7.4.tgz",
+          "integrity": "sha1-LANAXHU4w51+s3sxcCLjJfsBi/c=",
           "dev": true,
           "optional": true,
           "requires": {
@@ -3985,7 +4017,8 @@
         },
         "glob": {
           "version": "7.1.6",
-          "bundled": true,
+          "resolved": "https://registry.npmjs.org/glob/-/glob-7.1.6.tgz",
+          "integrity": "sha512-LwaxwyZ72Lk7vZINtNNrywX0ZuLyStrdDtabefZKAY5ZGJhVtgdznluResxNmPitE0SAO+O26sWTHeKSI2wMBA==",
           "dev": true,
           "optional": true,
           "requires": {
@@ -3999,13 +4032,15 @@
         },
         "has-unicode": {
           "version": "2.0.1",
-          "bundled": true,
+          "resolved": "https://registry.npmjs.org/has-unicode/-/has-unicode-2.0.1.tgz",
+          "integrity": "sha1-4Ob+aijPUROIVeCG0Wkedx3iqLk=",
           "dev": true,
           "optional": true
         },
         "iconv-lite": {
           "version": "0.4.24",
-          "bundled": true,
+          "resolved": "https://registry.npmjs.org/iconv-lite/-/iconv-lite-0.4.24.tgz",
+          "integrity": "sha512-v3MXnZAcvnywkTUEZomIActle7RXXeedOR31wwl7VlyoXO4Qi9arvSenNQWne1TcRwhCL1HwLI21bEqdpj8/rA==",
           "dev": true,
           "optional": true,
           "requires": {
@@ -4014,7 +4049,8 @@
         },
         "ignore-walk": {
           "version": "3.0.3",
-          "bundled": true,
+          "resolved": "https://registry.npmjs.org/ignore-walk/-/ignore-walk-3.0.3.tgz",
+          "integrity": "sha512-m7o6xuOaT1aqheYHKf8W6J5pYH85ZI9w077erOzLje3JsB1gkafkAhHHY19dqjulgIZHFm32Cp5uNZgcQqdJKw==",
           "dev": true,
           "optional": true,
           "requires": {
@@ -4023,7 +4059,8 @@
         },
         "inflight": {
           "version": "1.0.6",
-          "bundled": true,
+          "resolved": "https://registry.npmjs.org/inflight/-/inflight-1.0.6.tgz",
+          "integrity": "sha1-Sb1jMdfQLQwJvJEKEHW6gWW1bfk=",
           "dev": true,
           "optional": true,
           "requires": {
@@ -4033,19 +4070,22 @@
         },
         "inherits": {
           "version": "2.0.4",
-          "bundled": true,
+          "resolved": "https://registry.npmjs.org/inherits/-/inherits-2.0.4.tgz",
+          "integrity": "sha512-k/vGaX4/Yla3WzyMCvTQOXYeIHvqOKtnqBduzTHpzpQZzAskKMhZ2K+EnBiSM9zGSoIFeMpXKxa4dYeZIQqewQ==",
           "dev": true,
           "optional": true
         },
         "ini": {
           "version": "1.3.5",
-          "bundled": true,
+          "resolved": "https://registry.npmjs.org/ini/-/ini-1.3.5.tgz",
+          "integrity": "sha512-RZY5huIKCMRWDUqZlEi72f/lmXKMvuszcMBduliQ3nnWbx9X/ZBQO7DijMEYS9EhHBb2qacRUMtC7svLwe0lcw==",
           "dev": true,
           "optional": true
         },
         "is-fullwidth-code-point": {
           "version": "1.0.0",
-          "bundled": true,
+          "resolved": "https://registry.npmjs.org/is-fullwidth-code-point/-/is-fullwidth-code-point-1.0.0.tgz",
+          "integrity": "sha1-754xOG8DGn8NZDr4L95QxFfvAMs=",
           "dev": true,
           "optional": true,
           "requires": {
@@ -4054,13 +4094,15 @@
         },
         "isarray": {
           "version": "1.0.0",
-          "bundled": true,
+          "resolved": "https://registry.npmjs.org/isarray/-/isarray-1.0.0.tgz",
+          "integrity": "sha1-u5NdSFgsuhaMBoNJV6VKPgcSTxE=",
           "dev": true,
           "optional": true
         },
         "minimatch": {
           "version": "3.0.4",
-          "bundled": true,
+          "resolved": "https://registry.npmjs.org/minimatch/-/minimatch-3.0.4.tgz",
+          "integrity": "sha512-yJHVQEhyqPLUTgt9B83PXu6W3rx4MvvHvSUvToogpwoGDOUQ+yDrR0HRot+yOCdCO7u4hX3pWft6kWBBcqh0UA==",
           "dev": true,
           "optional": true,
           "requires": {
@@ -4069,13 +4111,15 @@
         },
         "minimist": {
           "version": "0.0.8",
-          "bundled": true,
+          "resolved": "https://registry.npmjs.org/minimist/-/minimist-0.0.8.tgz",
+          "integrity": "sha1-hX/Kv8M5fSYluCKCYuhqp6ARsF0=",
           "dev": true,
           "optional": true
         },
         "minipass": {
           "version": "2.9.0",
-          "bundled": true,
+          "resolved": "https://registry.npmjs.org/minipass/-/minipass-2.9.0.tgz",
+          "integrity": "sha512-wxfUjg9WebH+CUDX/CdbRlh5SmfZiy/hpkxaRI16Y9W56Pa75sWgd/rvFilSgrauD9NyFymP/+JFV3KwzIsJeg==",
           "dev": true,
           "optional": true,
           "requires": {
@@ -4085,7 +4129,8 @@
         },
         "minizlib": {
           "version": "1.3.3",
-          "bundled": true,
+          "resolved": "https://registry.npmjs.org/minizlib/-/minizlib-1.3.3.tgz",
+          "integrity": "sha512-6ZYMOEnmVsdCeTJVE0W9ZD+pVnE8h9Hma/iOwwRDsdQoePpoX56/8B6z3P9VNwppJuBKNRuFDRNRqRWexT9G9Q==",
           "dev": true,
           "optional": true,
           "requires": {
@@ -4094,7 +4139,8 @@
         },
         "mkdirp": {
           "version": "0.5.1",
-          "bundled": true,
+          "resolved": "https://registry.npmjs.org/mkdirp/-/mkdirp-0.5.1.tgz",
+          "integrity": "sha1-MAV0OOrGz3+MR2fzhkjWaX11yQM=",
           "dev": true,
           "optional": true,
           "requires": {
@@ -4103,13 +4149,15 @@
         },
         "ms": {
           "version": "2.1.2",
-          "bundled": true,
+          "resolved": "https://registry.npmjs.org/ms/-/ms-2.1.2.tgz",
+          "integrity": "sha512-sGkPx+VjMtmA6MX27oA4FBFELFCZZ4S4XqeGOXCv68tT+jb3vk/RyaKWP0PTKyWtmLSM0b+adUTEvbs1PEaH2w==",
           "dev": true,
           "optional": true
         },
         "needle": {
           "version": "2.4.0",
-          "bundled": true,
+          "resolved": "https://registry.npmjs.org/needle/-/needle-2.4.0.tgz",
+          "integrity": "sha512-4Hnwzr3mi5L97hMYeNl8wRW/Onhy4nUKR/lVemJ8gJedxxUyBLm9kkrDColJvoSfwi0jCNhD+xCdOtiGDQiRZg==",
           "dev": true,
           "optional": true,
           "requires": {
@@ -4120,7 +4168,8 @@
         },
         "node-pre-gyp": {
           "version": "0.14.0",
-          "bundled": true,
+          "resolved": "https://registry.npmjs.org/node-pre-gyp/-/node-pre-gyp-0.14.0.tgz",
+          "integrity": "sha512-+CvDC7ZttU/sSt9rFjix/P05iS43qHCOOGzcr3Ry99bXG7VX953+vFyEuph/tfqoYu8dttBkE86JSKBO2OzcxA==",
           "dev": true,
           "optional": true,
           "requires": {
@@ -4138,7 +4187,8 @@
         },
         "nopt": {
           "version": "4.0.1",
-          "bundled": true,
+          "resolved": "https://registry.npmjs.org/nopt/-/nopt-4.0.1.tgz",
+          "integrity": "sha1-0NRoWv1UFRk8jHUFYC0NF81kR00=",
           "dev": true,
           "optional": true,
           "requires": {
@@ -4148,7 +4198,8 @@
         },
         "npm-bundled": {
           "version": "1.1.1",
-          "bundled": true,
+          "resolved": "https://registry.npmjs.org/npm-bundled/-/npm-bundled-1.1.1.tgz",
+          "integrity": "sha512-gqkfgGePhTpAEgUsGEgcq1rqPXA+tv/aVBlgEzfXwA1yiUJF7xtEt3CtVwOjNYQOVknDk0F20w58Fnm3EtG0fA==",
           "dev": true,
           "optional": true,
           "requires": {
@@ -4157,13 +4208,15 @@
         },
         "npm-normalize-package-bin": {
           "version": "1.0.1",
-          "bundled": true,
+          "resolved": "https://registry.npmjs.org/npm-normalize-package-bin/-/npm-normalize-package-bin-1.0.1.tgz",
+          "integrity": "sha512-EPfafl6JL5/rU+ot6P3gRSCpPDW5VmIzX959Ob1+ySFUuuYHWHekXpwdUZcKP5C+DS4GEtdJluwBjnsNDl+fSA==",
           "dev": true,
           "optional": true
         },
         "npm-packlist": {
           "version": "1.4.7",
-          "bundled": true,
+          "resolved": "https://registry.npmjs.org/npm-packlist/-/npm-packlist-1.4.7.tgz",
+          "integrity": "sha512-vAj7dIkp5NhieaGZxBJB8fF4R0078rqsmhJcAfXZ6O7JJhjhPK96n5Ry1oZcfLXgfun0GWTZPOxaEyqv8GBykQ==",
           "dev": true,
           "optional": true,
           "requires": {
@@ -4173,7 +4226,8 @@
         },
         "npmlog": {
           "version": "4.1.2",
-          "bundled": true,
+          "resolved": "https://registry.npmjs.org/npmlog/-/npmlog-4.1.2.tgz",
+          "integrity": "sha512-2uUqazuKlTaSI/dC8AzicUck7+IrEaOnN/e0jd3Xtt1KcGpwx30v50mL7oPyr/h9bL3E4aZccVwpwP+5W9Vjkg==",
           "dev": true,
           "optional": true,
           "requires": {
@@ -4185,19 +4239,22 @@
         },
         "number-is-nan": {
           "version": "1.0.1",
-          "bundled": true,
+          "resolved": "https://registry.npmjs.org/number-is-nan/-/number-is-nan-1.0.1.tgz",
+          "integrity": "sha1-CXtgK1NCKlIsGvuHkDGDNpQaAR0=",
           "dev": true,
           "optional": true
         },
         "object-assign": {
           "version": "4.1.1",
-          "bundled": true,
+          "resolved": "https://registry.npmjs.org/object-assign/-/object-assign-4.1.1.tgz",
+          "integrity": "sha1-IQmtx5ZYh8/AXLvUQsrIv7s2CGM=",
           "dev": true,
           "optional": true
         },
         "once": {
           "version": "1.4.0",
-          "bundled": true,
+          "resolved": "https://registry.npmjs.org/once/-/once-1.4.0.tgz",
+          "integrity": "sha1-WDsap3WWHUsROsF9nFC6753Xa9E=",
           "dev": true,
           "optional": true,
           "requires": {
@@ -4206,19 +4263,22 @@
         },
         "os-homedir": {
           "version": "1.0.2",
-          "bundled": true,
+          "resolved": "https://registry.npmjs.org/os-homedir/-/os-homedir-1.0.2.tgz",
+          "integrity": "sha1-/7xJiDNuDoM94MFox+8VISGqf7M=",
           "dev": true,
           "optional": true
         },
         "os-tmpdir": {
           "version": "1.0.2",
-          "bundled": true,
+          "resolved": "https://registry.npmjs.org/os-tmpdir/-/os-tmpdir-1.0.2.tgz",
+          "integrity": "sha1-u+Z0BseaqFxc/sdm/lc0VV36EnQ=",
           "dev": true,
           "optional": true
         },
         "osenv": {
           "version": "0.1.5",
-          "bundled": true,
+          "resolved": "https://registry.npmjs.org/osenv/-/osenv-0.1.5.tgz",
+          "integrity": "sha512-0CWcCECdMVc2Rw3U5w9ZjqX6ga6ubk1xDVKxtBQPK7wis/0F2r9T6k4ydGYhecl7YUBxBVxhL5oisPsNxAPe2g==",
           "dev": true,
           "optional": true,
           "requires": {
@@ -4228,19 +4288,22 @@
         },
         "path-is-absolute": {
           "version": "1.0.1",
-          "bundled": true,
+          "resolved": "https://registry.npmjs.org/path-is-absolute/-/path-is-absolute-1.0.1.tgz",
+          "integrity": "sha1-F0uSaHNVNP+8es5r9TpanhtcX18=",
           "dev": true,
           "optional": true
         },
         "process-nextick-args": {
           "version": "2.0.1",
-          "bundled": true,
+          "resolved": "https://registry.npmjs.org/process-nextick-args/-/process-nextick-args-2.0.1.tgz",
+          "integrity": "sha512-3ouUOpQhtgrbOa17J7+uxOTpITYWaGP7/AhoR3+A+/1e9skrzelGi/dXzEYyvbxubEF6Wn2ypscTKiKJFFn1ag==",
           "dev": true,
           "optional": true
         },
         "rc": {
           "version": "1.2.8",
-          "bundled": true,
+          "resolved": "https://registry.npmjs.org/rc/-/rc-1.2.8.tgz",
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@@ -4252,7 +4315,8 @@
           "dependencies": {
             "minimist": {
               "version": "1.2.0",
-              "bundled": true,
+              "resolved": "https://registry.npmjs.org/minimist/-/minimist-1.2.0.tgz",
+              "integrity": "sha1-o1AIsg9BOD7sH7kU9M1d95omQoQ=",
               "dev": true,
               "optional": true
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@@ -4260,7 +4324,8 @@
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           "version": "2.3.6",
-          "bundled": true,
+          "resolved": "https://registry.npmjs.org/readable-stream/-/readable-stream-2.3.6.tgz",
+          "integrity": "sha512-tQtKA9WIAhBF3+VLAseyMqZeBjW0AHJoxOtYqSUZNJxauErmLbVm2FW1y+J/YA9dUrAC39ITejlZWhVIwawkKw==",
           "dev": true,
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           "requires": {
@@ -4275,7 +4340,8 @@
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         "rimraf": {
           "version": "2.7.1",
-          "bundled": true,
+          "resolved": "https://registry.npmjs.org/rimraf/-/rimraf-2.7.1.tgz",
+          "integrity": "sha512-uWjbaKIK3T1OSVptzX7Nl6PvQ3qAGtKEtVRjRuazjfL3Bx5eI409VZSqgND+4UNnmzLVdPj9FqFJNPqBZFve4w==",
           "dev": true,
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           "requires": {
@@ -4284,43 +4350,50 @@
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         "safe-buffer": {
           "version": "5.1.2",
-          "bundled": true,
+          "resolved": "https://registry.npmjs.org/safe-buffer/-/safe-buffer-5.1.2.tgz",
+          "integrity": "sha512-Gd2UZBJDkXlY7GbJxfsE8/nvKkUEU1G38c1siN6QP6a9PT9MmHB8GnpscSmMJSoF8LOIrt8ud/wPtojys4G6+g==",
           "dev": true,
           "optional": true
         },
         "safer-buffer": {
           "version": "2.1.2",
-          "bundled": true,
+          "resolved": "https://registry.npmjs.org/safer-buffer/-/safer-buffer-2.1.2.tgz",
+          "integrity": "sha512-YZo3K82SD7Riyi0E1EQPojLz7kpepnSQI9IyPbHHg1XXXevb5dJI7tpyN2ADxGcQbHG7vcyRHk0cbwqcQriUtg==",
           "dev": true,
           "optional": true
         },
         "sax": {
           "version": "1.2.4",
-          "bundled": true,
+          "resolved": "https://registry.npmjs.org/sax/-/sax-1.2.4.tgz",
+          "integrity": "sha512-NqVDv9TpANUjFm0N8uM5GxL36UgKi9/atZw+x7YFnQ8ckwFGKrl4xX4yWtrey3UJm5nP1kUbnYgLopqWNSRhWw==",
           "dev": true,
           "optional": true
         },
         "semver": {
           "version": "5.7.1",
-          "bundled": true,
+          "resolved": "https://registry.npmjs.org/semver/-/semver-5.7.1.tgz",
+          "integrity": "sha512-sauaDf/PZdVgrLTNYHRtpXa1iRiKcaebiKQ1BJdpQlWH2lCvexQdX55snPFyK7QzpudqbCI0qXFfOasHdyNDGQ==",
           "dev": true,
           "optional": true
         },
         "set-blocking": {
           "version": "2.0.0",
-          "bundled": true,
+          "resolved": "https://registry.npmjs.org/set-blocking/-/set-blocking-2.0.0.tgz",
+          "integrity": "sha1-BF+XgtARrppoA93TgrJDkrPYkPc=",
           "dev": true,
           "optional": true
         },
         "signal-exit": {
           "version": "3.0.2",
-          "bundled": true,
+          "resolved": "https://registry.npmjs.org/signal-exit/-/signal-exit-3.0.2.tgz",
+          "integrity": "sha1-tf3AjxKH6hF4Yo5BXiUTK3NkbG0=",
           "dev": true,
           "optional": true
         },
         "string-width": {
           "version": "1.0.2",
-          "bundled": true,
+          "resolved": "https://registry.npmjs.org/string-width/-/string-width-1.0.2.tgz",
+          "integrity": "sha1-EYvfW4zcUaKn5w0hHgfisLmxB9M=",
           "dev": true,
           "optional": true,
           "requires": {
@@ -4331,7 +4404,8 @@
         },
         "string_decoder": {
           "version": "1.1.1",
-          "bundled": true,
+          "resolved": "https://registry.npmjs.org/string_decoder/-/string_decoder-1.1.1.tgz",
+          "integrity": "sha512-n/ShnvDi6FHbbVfviro+WojiFzv+s8MPMHBczVePfUpDJLwoLT0ht1l4YwBCbi8pJAveEEdnkHyPyTP/mzRfwg==",
           "dev": true,
           "optional": true,
           "requires": {
@@ -4340,7 +4414,8 @@
         },
         "strip-ansi": {
           "version": "3.0.1",
-          "bundled": true,
+          "resolved": "https://registry.npmjs.org/strip-ansi/-/strip-ansi-3.0.1.tgz",
+          "integrity": "sha1-ajhfuIU9lS1f8F0Oiq+UJ43GPc8=",
           "dev": true,
           "optional": true,
           "requires": {
@@ -4349,13 +4424,15 @@
         },
         "strip-json-comments": {
           "version": "2.0.1",
-          "bundled": true,
+          "resolved": "https://registry.npmjs.org/strip-json-comments/-/strip-json-comments-2.0.1.tgz",
+          "integrity": "sha1-PFMZQukIwml8DsNEhYwobHygpgo=",
           "dev": true,
           "optional": true
         },
         "tar": {
           "version": "4.4.13",
-          "bundled": true,
+          "resolved": "https://registry.npmjs.org/tar/-/tar-4.4.13.tgz",
+          "integrity": "sha512-w2VwSrBoHa5BsSyH+KxEqeQBAllHhccyMFVHtGtdMpF4W7IRWfZjFiQceJPChOeTsSDVUpER2T8FA93pr0L+QA==",
           "dev": true,
           "optional": true,
           "requires": {
@@ -4370,13 +4447,15 @@
         },
         "util-deprecate": {
           "version": "1.0.2",
-          "bundled": true,
+          "resolved": "https://registry.npmjs.org/util-deprecate/-/util-deprecate-1.0.2.tgz",
+          "integrity": "sha1-RQ1Nyfpw3nMnYvvS1KKJgUGaDM8=",
           "dev": true,
           "optional": true
         },
         "wide-align": {
           "version": "1.1.3",
-          "bundled": true,
+          "resolved": "https://registry.npmjs.org/wide-align/-/wide-align-1.1.3.tgz",
+          "integrity": "sha512-QGkOQc8XL6Bt5PwnsExKBPuMKBxnGxWWW3fU55Xt4feHozMUhdUMaBCk290qpm/wG5u/RSKzwdAC4i51YigihA==",
           "dev": true,
           "optional": true,
           "requires": {
@@ -4385,13 +4464,15 @@
         },
         "wrappy": {
           "version": "1.0.2",
-          "bundled": true,
+          "resolved": "https://registry.npmjs.org/wrappy/-/wrappy-1.0.2.tgz",
+          "integrity": "sha1-tSQ9jz7BqjXxNkYFvA0QNuMKtp8=",
           "dev": true,
           "optional": true
         },
         "yallist": {
           "version": "3.1.1",
-          "bundled": true,
+          "resolved": "https://registry.npmjs.org/yallist/-/yallist-3.1.1.tgz",
+          "integrity": "sha512-a4UGQaWPH59mOXUYnAG2ewncQS4i4F43Tv3JoAM+s2VDAmS9NsK8GpDMLrCHPksFT7h3K6TOoUNn2pb7RoXx4g==",
           "dev": true,
           "optional": true
         }
diff --git a/package.json b/package.json
index 05f91e6..9c8ba91 100644
--- a/package.json
+++ b/package.json
@@ -41,6 +41,7 @@
     "socket.io": "^2.3.0",
     "yargs": "^15.1.0",
     "webpack-stream": "^5.2.1",
+    "babel-eslint": "^10.1.0",
     "@babel/core": "^7.8.7",
     "@babel/preset-env": "^7.8.7"
   },
@@ -49,6 +50,7 @@
       "browser": true,
       "es6": true
     },
+    "parser": "babel-eslint",
     "parserOptions": {
       "sourceType": "module",
       "allowImportExportEverywhere": true