Set up ESLint for Typescript

.eslintrc.js

@@ -0,0 +1,11 @@
+module.exports = {
+    root: true,
+    parser: '@typescript-eslint/parser',
+    plugins: [
+        '@typescript-eslint',
+    ],
+    extends: [
+        'eslint:recommended',
+        'plugin:@typescript-eslint/recommended',
+    ],
+};

.eslintrc.json

@@ -1,38 +0,0 @@
-{
-    "env": {
-        "browser": true,
-        "commonjs": true,
-        "es2021": true,
-        "node": true,
-        "mocha": true
-    },
-    "extends": ["eslint:recommended"],
-    "parser": "babel-eslint",
-    "parserOptions": {
-        "ecmaVersion": 12
-    },
-    "rules": {
-        "indent": [
-            "error",
-            4
-        ],
-        "linebreak-style": [
-            "error",
-            "windows"
-        ],
-        "quotes": [
-            "error",
-            "double"
-        ],
-        "semi": [
-            "error",
-            "always"
-        ],
-        "no-unused-vars": [
-            "error",
-            {
-                "args": "after-used"
-            }
-        ]
-    }
-}

package-lock.json

@@ -248,6 +248,12 @@
           "requires": {
             "type-fest": "^0.8.1"
           }
+        },
+        "ignore": {
+          "version": "4.0.6",
+          "resolved": "https://registry.npmjs.org/ignore/-/ignore-4.0.6.tgz",
+          "integrity": "sha512-cyFDKrqc/YdcWFniJhzI42+AzS+gNwmUzOSFcRCQYwySuBBBy/KjuxWLZ/FHEH6Moq1NizMOBWyTcv8O4OZIMg==",
+          "dev": true
         }
       }
     },
@@ -270,12 +276,155 @@
       "integrity": "sha512-tsAQNx32a8CoFhjhijUIhI4kccIAgmGhy8LZMZgGfmXcpMbPRUqn5LWmgRttILi6yeGmBJd2xsPkFMs0PzgPCw==",
       "dev": true
     },
+    "@nodelib/fs.scandir": {
+      "version": "2.1.4",
+      "resolved": "https://registry.npmjs.org/@nodelib/fs.scandir/-/fs.scandir-2.1.4.tgz",
+      "integrity": "sha512-33g3pMJk3bg5nXbL/+CY6I2eJDzZAni49PfJnL5fghPTggPvBd/pFNSgJsdAgWptuFu7qq/ERvOYFlhvsLTCKA==",
+      "dev": true,
+      "requires": {
+        "@nodelib/fs.stat": "2.0.4",
+        "run-parallel": "^1.1.9"
+      }
+    },
+    "@nodelib/fs.stat": {
+      "version": "2.0.4",
+      "resolved": "https://registry.npmjs.org/@nodelib/fs.stat/-/fs.stat-2.0.4.tgz",
+      "integrity": "sha512-IYlHJA0clt2+Vg7bccq+TzRdJvv19c2INqBSsoOLp1je7xjtr7J26+WXR72MCdvU9q1qTzIWDfhMf+DRvQJK4Q==",
+      "dev": true
+    },
+    "@nodelib/fs.walk": {
+      "version": "1.2.6",
+      "resolved": "https://registry.npmjs.org/@nodelib/fs.walk/-/fs.walk-1.2.6.tgz",
+      "integrity": "sha512-8Broas6vTtW4GIXTAHDoE32hnN2M5ykgCpWGbuXHQ15vEMqr23pB76e/GZcYsZCHALv50ktd24qhEyKr6wBtow==",
+      "dev": true,
+      "requires": {
+        "@nodelib/fs.scandir": "2.1.4",
+        "fastq": "^1.6.0"
+      }
+    },
     "@types/color-name": {
       "version": "1.1.1",
       "resolved": "https://registry.npmjs.org/@types/color-name/-/color-name-1.1.1.tgz",
       "integrity": "sha512-rr+OQyAjxze7GgWrSaJwydHStIhHq2lvY3BOC2Mj7KnzI7XK0Uw1TOOdI9lDoajEbSWLiYgoo4f1R51erQfhPQ==",
       "dev": true
     },
+    "@types/json-schema": {
+      "version": "7.0.7",
+      "resolved": "https://registry.npmjs.org/@types/json-schema/-/json-schema-7.0.7.tgz",
+      "integrity": "sha512-cxWFQVseBm6O9Gbw1IWb8r6OS4OhSt3hPZLkFApLjM8TEXROBuQGLAH2i2gZpcXdLBIrpXuTDhH7Vbm1iXmNGA==",
+      "dev": true
+    },
+    "@types/node": {
+      "version": "14.14.27",
+      "resolved": "https://registry.npmjs.org/@types/node/-/node-14.14.27.tgz",
+      "integrity": "sha512-Ecfmo4YDQPwuqTCl1yBxLV5ihKfRlkBmzUEDcfIRvDxOTGQEeikr317Ln7Gcv0tjA8dVgKI3rniqW2G1OyKDng==",
+      "dev": true
+    },
+    "@typescript-eslint/eslint-plugin": {
+      "version": "4.15.0",
+      "resolved": "https://registry.npmjs.org/@typescript-eslint/eslint-plugin/-/eslint-plugin-4.15.0.tgz",
+      "integrity": "sha512-DJgdGZW+8CFUTz5C/dnn4ONcUm2h2T0itWD85Ob5/V27Ndie8hUoX5HKyGssvR8sUMkAIlUc/AMK67Lqa3kBIQ==",
+      "dev": true,
+      "requires": {
+        "@typescript-eslint/experimental-utils": "4.15.0",
+        "@typescript-eslint/scope-manager": "4.15.0",
+        "debug": "^4.1.1",
+        "functional-red-black-tree": "^1.0.1",
+        "lodash": "^4.17.15",
+        "regexpp": "^3.0.0",
+        "semver": "^7.3.2",
+        "tsutils": "^3.17.1"
+      },
+      "dependencies": {
+        "semver": {
+          "version": "7.3.4",
+          "resolved": "https://registry.npmjs.org/semver/-/semver-7.3.4.tgz",
+          "integrity": "sha512-tCfb2WLjqFAtXn4KEdxIhalnRtoKFN7nAwj0B3ZXCbQloV2tq5eDbcTmT68JJD3nRJq24/XgxtQKFIpQdtvmVw==",
+          "dev": true,
+          "requires": {
+            "lru-cache": "^6.0.0"
+          }
+        }
+      }
+    },
+    "@typescript-eslint/experimental-utils": {
+      "version": "4.15.0",
+      "resolved": "https://registry.npmjs.org/@typescript-eslint/experimental-utils/-/experimental-utils-4.15.0.tgz",
+      "integrity": "sha512-V4vaDWvxA2zgesg4KPgEGiomWEBpJXvY4ZX34Y3qxK8LUm5I87L+qGIOTd9tHZOARXNRt9pLbblSKiYBlGMawg==",
+      "dev": true,
+      "requires": {
+        "@types/json-schema": "^7.0.3",
+        "@typescript-eslint/scope-manager": "4.15.0",
+        "@typescript-eslint/types": "4.15.0",
+        "@typescript-eslint/typescript-estree": "4.15.0",
+        "eslint-scope": "^5.0.0",
+        "eslint-utils": "^2.0.0"
+      }
+    },
+    "@typescript-eslint/parser": {
+      "version": "4.15.0",
+      "resolved": "https://registry.npmjs.org/@typescript-eslint/parser/-/parser-4.15.0.tgz",
+      "integrity": "sha512-L6Dtbq8Bc7g2aZwnIBETpmUa9XDKCMzKVwAArnGp5Mn7PRNFjf3mUzq8UeBjL3K8t311hvevnyqXAMSmxO8Gpg==",
+      "dev": true,
+      "requires": {
+        "@typescript-eslint/scope-manager": "4.15.0",
+        "@typescript-eslint/types": "4.15.0",
+        "@typescript-eslint/typescript-estree": "4.15.0",
+        "debug": "^4.1.1"
+      }
+    },
+    "@typescript-eslint/scope-manager": {
+      "version": "4.15.0",
+      "resolved": "https://registry.npmjs.org/@typescript-eslint/scope-manager/-/scope-manager-4.15.0.tgz",
+      "integrity": "sha512-CSNBZnCC2jEA/a+pR9Ljh8Y+5TY5qgbPz7ICEk9WCpSEgT6Pi7H2RIjxfrrbUXvotd6ta+i27sssKEH8Azm75g==",
+      "dev": true,
+      "requires": {
+        "@typescript-eslint/types": "4.15.0",
+        "@typescript-eslint/visitor-keys": "4.15.0"
+      }
+    },
+    "@typescript-eslint/types": {
+      "version": "4.15.0",
+      "resolved": "https://registry.npmjs.org/@typescript-eslint/types/-/types-4.15.0.tgz",
+      "integrity": "sha512-su4RHkJhS+iFwyqyXHcS8EGPlUVoC+XREfy5daivjLur9JP8GhvTmDipuRpcujtGC4M+GYhUOJCPDE3rC5NJrg==",
+      "dev": true
+    },
+    "@typescript-eslint/typescript-estree": {
+      "version": "4.15.0",
+      "resolved": "https://registry.npmjs.org/@typescript-eslint/typescript-estree/-/typescript-estree-4.15.0.tgz",
+      "integrity": "sha512-jG6xTmcNbi6xzZq0SdWh7wQ9cMb2pqXaUp6bUZOMsIlu5aOlxGxgE/t6L/gPybybQGvdguajXGkZKSndZJpksA==",
+      "dev": true,
+      "requires": {
+        "@typescript-eslint/types": "4.15.0",
+        "@typescript-eslint/visitor-keys": "4.15.0",
+        "debug": "^4.1.1",
+        "globby": "^11.0.1",
+        "is-glob": "^4.0.1",
+        "semver": "^7.3.2",
+        "tsutils": "^3.17.1"
+      },
+      "dependencies": {
+        "semver": {
+          "version": "7.3.4",
+          "resolved": "https://registry.npmjs.org/semver/-/semver-7.3.4.tgz",
+          "integrity": "sha512-tCfb2WLjqFAtXn4KEdxIhalnRtoKFN7nAwj0B3ZXCbQloV2tq5eDbcTmT68JJD3nRJq24/XgxtQKFIpQdtvmVw==",
+          "dev": true,
+          "requires": {
+            "lru-cache": "^6.0.0"
+          }
+        }
+      }
+    },
+    "@typescript-eslint/visitor-keys": {
+      "version": "4.15.0",
+      "resolved": "https://registry.npmjs.org/@typescript-eslint/visitor-keys/-/visitor-keys-4.15.0.tgz",
+      "integrity": "sha512-RnDtJwOwFucWFAMjG3ghCG/ikImFJFEg20DI7mn4pHEx3vC48lIAoyjhffvfHmErRDboUPC7p9Z2il4CLb7qxA==",
+      "dev": true,
+      "requires": {
+        "@typescript-eslint/types": "4.15.0",
+        "eslint-visitor-keys": "^2.0.0"
+      }
+    },
     "@ungap/promise-all-settled": {
       "version": "1.1.2",
       "resolved": "https://registry.npmjs.org/@ungap/promise-all-settled/-/promise-all-settled-1.1.2.tgz",
@@ -390,6 +539,12 @@
       "resolved": "https://registry.npmjs.org/arr-union/-/arr-union-3.1.0.tgz",
       "integrity": "sha1-45sJrqne+Gao8gbiiK9jkZuuOcQ="
     },
+    "array-union": {
+      "version": "2.1.0",
+      "resolved": "https://registry.npmjs.org/array-union/-/array-union-2.1.0.tgz",
+      "integrity": "sha512-HGyxoOTYUyCM6stUe6EJgnd4EoewAI7zMdfqO+kGjnlZmBDz/cR5pf8r/cR4Wq60sL/p0IkcjUEEPwS3GFrIyw==",
+      "dev": true
+    },
     "array-unique": {
       "version": "0.3.2",
       "resolved": "https://registry.npmjs.org/array-unique/-/array-unique-0.3.2.tgz",
@@ -449,28 +604,6 @@
         "pify": "^5.0.0"
       }
     },
-    "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"
-      },
-      "dependencies": {
-        "eslint-visitor-keys": {
-          "version": "1.3.0",
-          "resolved": "https://registry.npmjs.org/eslint-visitor-keys/-/eslint-visitor-keys-1.3.0.tgz",
-          "integrity": "sha512-6J72N8UNa462wa/KFODt/PJ3IU60SDpC3QXC1Hjc1BXXpfL2C9R5+AU7jhe0F6GREqVMh4Juu+NY7xn+6dipUQ==",
-          "dev": true
-        }
-      }
-    },
     "balanced-match": {
       "version": "1.0.0",
       "resolved": "https://registry.npmjs.org/balanced-match/-/balanced-match-1.0.0.tgz",
@@ -936,6 +1069,15 @@
       "integrity": "sha512-58lmxKSA4BNyLz+HHMUzlOEpg09FV+ev6ZMe3vJihgdxzgcwZ8VoEEPmALCZG9LmqfVoNMMKpttIYTVG6uDY7A==",
       "dev": true
     },
+    "dir-glob": {
+      "version": "3.0.1",
+      "resolved": "https://registry.npmjs.org/dir-glob/-/dir-glob-3.0.1.tgz",
+      "integrity": "sha512-WkrWp9GR4KXfKGYzOLmTuGVi1UWFfws377n9cc55/tb6DuqyF6pcQ5AbiHEshaDpY9v6oaSr2XCDidGmMwdzIA==",
+      "dev": true,
+      "requires": {
+        "path-type": "^4.0.0"
+      }
+    },
     "doctrine": {
       "version": "3.0.0",
       "resolved": "https://registry.npmjs.org/doctrine/-/doctrine-3.0.0.tgz",
@@ -1068,12 +1210,12 @@
       "integrity": "sha1-G2HAViGQqN/2rjuyzwIAyhMLhtQ="
     },
     "eslint": {
-      "version": "7.19.0",
+      "version": "7.20.0",
-      "resolved": "https://registry.npmjs.org/eslint/-/eslint-7.19.0.tgz",
+      "resolved": "https://registry.npmjs.org/eslint/-/eslint-7.20.0.tgz",
-      "integrity": "sha512-CGlMgJY56JZ9ZSYhJuhow61lMPPjUzWmChFya71Z/jilVos7mR/jPgaEfVGgMBY5DshbKdG8Ezb8FDCHcoMEMg==",
+      "integrity": "sha512-qGi0CTcOGP2OtCQBgWZlQjcTuP0XkIpYFj25XtRTQSHC+umNnp7UMshr2G8SLsRFYDdAPFeHOsiteadmMH02Yw==",
       "dev": true,
       "requires": {
-        "@babel/code-frame": "^7.0.0",
+        "@babel/code-frame": "7.12.11",
         "@eslint/eslintrc": "^0.3.0",
         "ajv": "^6.10.0",
         "chalk": "^4.0.0",
@@ -1085,7 +1227,7 @@
         "eslint-utils": "^2.1.0",
         "eslint-visitor-keys": "^2.0.0",
         "espree": "^7.3.1",
-        "esquery": "^1.2.0",
+        "esquery": "^1.4.0",
         "esutils": "^2.0.2",
         "file-entry-cache": "^6.0.0",
         "functional-red-black-tree": "^1.0.1",
@@ -1112,6 +1254,15 @@
         "v8-compile-cache": "^2.0.3"
       },
       "dependencies": {
+        "@babel/code-frame": {
+          "version": "7.12.11",
+          "resolved": "https://registry.npmjs.org/@babel/code-frame/-/code-frame-7.12.11.tgz",
+          "integrity": "sha512-Zt1yodBx1UcyiePMSkWnU4hPqhwq7hGi2nFL1LeA3EUl+q2LQx16MISgJ0+z7dnmgvP9QtIleuETGOiOH1RcIw==",
+          "dev": true,
+          "requires": {
+            "@babel/highlight": "^7.10.4"
+          }
+        },
         "ansi-styles": {
           "version": "4.3.0",
           "resolved": "https://registry.npmjs.org/ansi-styles/-/ansi-styles-4.3.0.tgz",
@@ -1161,6 +1312,12 @@
           "integrity": "sha512-EykJT/Q1KjTWctppgIAgfSO0tKVuZUjhgMr17kqTumMl6Afv3EISleU7qZUzoXDFTAHTDC4NOoG/ZxU3EvlMPQ==",
           "dev": true
         },
+        "ignore": {
+          "version": "4.0.6",
+          "resolved": "https://registry.npmjs.org/ignore/-/ignore-4.0.6.tgz",
+          "integrity": "sha512-cyFDKrqc/YdcWFniJhzI42+AzS+gNwmUzOSFcRCQYwySuBBBy/KjuxWLZ/FHEH6Moq1NizMOBWyTcv8O4OZIMg==",
+          "dev": true
+        },
         "semver": {
           "version": "7.3.4",
           "resolved": "https://registry.npmjs.org/semver/-/semver-7.3.4.tgz",
@@ -1240,9 +1397,9 @@
       "dev": true
     },
     "esquery": {
-      "version": "1.3.1",
+      "version": "1.4.0",
-      "resolved": "https://registry.npmjs.org/esquery/-/esquery-1.3.1.tgz",
+      "resolved": "https://registry.npmjs.org/esquery/-/esquery-1.4.0.tgz",
-      "integrity": "sha512-olpvt9QG0vniUBZspVRN6lwB7hOZoTRtT+jzR+tS4ffYx2mzbw+z0XCOk44aaLYKApNX5nMm+E+P6o25ip/DHQ==",
+      "integrity": "sha512-cCDispWt5vHHtwMY2YrAQ4ibFkAL8RbH5YGBnZBc90MolvvfkkQcJro/aZiAQUlQ3qgrYS6D6v8Gc5G5CQsc9w==",
       "dev": true,
       "requires": {
         "estraverse": "^5.1.0"
@@ -1429,6 +1586,32 @@
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       "dev": true
     },
+    "fast-glob": {
+      "version": "3.2.5",
+      "resolved": "https://registry.npmjs.org/fast-glob/-/fast-glob-3.2.5.tgz",
+      "integrity": "sha512-2DtFcgT68wiTTiwZ2hNdJfcHNke9XOfnwmBRWXhmeKM8rF0TGwmC/Qto3S7RoZKp5cilZbxzO5iTNTQsJ+EeDg==",
+      "dev": true,
+      "requires": {
+        "@nodelib/fs.stat": "^2.0.2",
+        "@nodelib/fs.walk": "^1.2.3",
+        "glob-parent": "^5.1.0",
+        "merge2": "^1.3.0",
+        "micromatch": "^4.0.2",
+        "picomatch": "^2.2.1"
+      },
+      "dependencies": {
+        "micromatch": {
+          "version": "4.0.2",
+          "resolved": "https://registry.npmjs.org/micromatch/-/micromatch-4.0.2.tgz",
+          "integrity": "sha512-y7FpHSbMUMoyPbYUSzO6PaZ6FyRnQOpHuKwbo1G+Knck95XVU4QAiKdGEnj5wwoS7PlOgthX/09u5iFJ+aYf5Q==",
+          "dev": true,
+          "requires": {
+            "braces": "^3.0.1",
+            "picomatch": "^2.0.5"
+          }
+        }
+      }
+    },
     "fast-json-stable-stringify": {
       "version": "2.1.0",
       "resolved": "https://registry.npmjs.org/fast-json-stable-stringify/-/fast-json-stable-stringify-2.1.0.tgz",
@@ -1441,6 +1624,15 @@
       "integrity": "sha1-PYpcZog6FqMMqGQ+hR8Zuqd5eRc=",
       "dev": true
     },
+    "fastq": {
+      "version": "1.10.1",
+      "resolved": "https://registry.npmjs.org/fastq/-/fastq-1.10.1.tgz",
+      "integrity": "sha512-AWuv6Ery3pM+dY7LYS8YIaCiQvUaos9OB1RyNgaOWnaX+Tik7Onvcsf8x8c+YtDeT0maYLniBip2hox5KtEXXA==",
+      "dev": true,
+      "requires": {
+        "reusify": "^1.0.4"
+      }
+    },
     "file-entry-cache": {
       "version": "6.0.0",
       "resolved": "https://registry.npmjs.org/file-entry-cache/-/file-entry-cache-6.0.0.tgz",
@@ -1645,6 +1837,20 @@
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       "dev": true
     },
+    "globby": {
+      "version": "11.0.2",
+      "resolved": "https://registry.npmjs.org/globby/-/globby-11.0.2.tgz",
+      "integrity": "sha512-2ZThXDvvV8fYFRVIxnrMQBipZQDr7MxKAmQK1vujaj9/7eF0efG7BPUKJ7jP7G5SLF37xKDXvO4S/KKLj/Z0og==",
+      "dev": true,
+      "requires": {
+        "array-union": "^2.1.0",
+        "dir-glob": "^3.0.1",
+        "fast-glob": "^3.1.1",
+        "ignore": "^5.1.4",
+        "merge2": "^1.3.0",
+        "slash": "^3.0.0"
+      }
+    },
     "graceful-fs": {
       "version": "4.2.4",
       "resolved": "https://registry.npmjs.org/graceful-fs/-/graceful-fs-4.2.4.tgz",
@@ -1763,9 +1969,9 @@
       }
     },
     "ignore": {
-      "version": "4.0.6",
+      "version": "5.1.8",
-      "resolved": "https://registry.npmjs.org/ignore/-/ignore-4.0.6.tgz",
+      "resolved": "https://registry.npmjs.org/ignore/-/ignore-5.1.8.tgz",
-      "integrity": "sha512-cyFDKrqc/YdcWFniJhzI42+AzS+gNwmUzOSFcRCQYwySuBBBy/KjuxWLZ/FHEH6Moq1NizMOBWyTcv8O4OZIMg==",
+      "integrity": "sha512-BMpfD7PpiETpBl/A6S498BaIJ6Y/ABT93ETbby2fP00v4EbvPBXWEoaR1UBPKs3iR53pJY7EtZk5KACI57i1Uw==",
       "dev": true
     },
     "import-fresh": {
@@ -2305,6 +2511,12 @@
         "readable-stream": "^2.0.1"
       }
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+      "resolved": "https://registry.npmjs.org/queue-microtask/-/queue-microtask-1.2.2.tgz",
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+      "dev": true
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@@ -3127,6 +3351,12 @@
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+    "reusify": {
+      "version": "1.0.4",
+      "resolved": "https://registry.npmjs.org/reusify/-/reusify-1.0.4.tgz",
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@@ -3141,6 +3371,15 @@
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+      "resolved": "https://registry.npmjs.org/slash/-/slash-3.0.0.tgz",
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@@ -3547,9 +3792,9 @@
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-          "resolved": "https://registry.npmjs.org/ajv/-/ajv-7.0.3.tgz",
+          "resolved": "https://registry.npmjs.org/ajv/-/ajv-7.1.0.tgz",
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@@ -3642,6 +3887,21 @@
         "universalify": "^0.1.2"
       }
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+    "tslib": {
+      "version": "1.14.1",
+      "resolved": "https://registry.npmjs.org/tslib/-/tslib-1.14.1.tgz",
+      "integrity": "sha512-Xni35NKzjgMrwevysHTCArtLDpPvye8zV/0E4EyYn43P7/7qvQwPh9BGkHewbMulVntbigmcT7rdX3BNo9wRJg==",
+      "dev": true
+    },
+    "tsutils": {
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+      "resolved": "https://registry.npmjs.org/tsutils/-/tsutils-3.20.0.tgz",
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+      "dev": true,
+      "requires": {
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@@ -3678,9 +3938,10 @@
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-      "version": "4.2.0-beta",
+      "version": "4.2.0-insiders.20210210",
-      "resolved": "https://registry.npmjs.org/typescript/-/typescript-4.2.0-beta.tgz",
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+      "dev": true
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     "union-value": {
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package.json

@@ -39,17 +39,19 @@
     "luxon": "^1.25.0",
     "md5": "^2.3.0",
     "source-map-loader": "^2.0.1",
-    "tough-cookie": "^4.0.0",
+    "tough-cookie": "^4.0.0"
-    "typescript": "^4.2.0-beta"
   },
   "devDependencies": {
-    "babel-eslint": "^10.1.0",
+    "@types/node": "^14.14.27",
+    "@typescript-eslint/eslint-plugin": "^4.15.0",
+    "@typescript-eslint/parser": "^4.15.0",
     "chai": "^4.2.0",
     "dotenv": "^8.2.0",
-    "eslint": "^7.12.1",
+    "eslint": "^7.20.0",
     "lodash": "^4.17.20",
     "mocha": "^8.1.3",
-    "nyc": "^15.1.0"
+    "nyc": "^15.1.0",
+    "typescript": "^4.2.0-insiders.20210210"
   },
   "bugs": {
     "url": "https://github.com/MillenniumEarl/F95API/issues"