diff --git a/.eslintrc.json b/.eslintrc.json
index d658236..09c02e9 100644
--- a/.eslintrc.json
+++ b/.eslintrc.json
@@ -1,3 +1,13 @@
 {
-    "extends": "standard"
+    "root": true,
+    "parser": "@typescript-eslint/parser",
+    "plugins": [
+      "@typescript-eslint"
+    ],
+    "extends": [
+      "eslint:recommended",
+      "standard",
+      "plugin:@typescript-eslint/eslint-recommended",
+      "plugin:@typescript-eslint/recommended"
+    ]
 }
\ No newline at end of file
diff --git a/.gitignore b/.gitignore
index effb843..193d2ab 100644
--- a/.gitignore
+++ b/.gitignore
@@ -71,4 +71,5 @@ typings/
 
 # End of https://www.gitignore.io/api/node,code
 tests/
-npm-audit.html
\ No newline at end of file
+npm-audit.html
+dist/
\ No newline at end of file
diff --git a/package-lock.json b/package-lock.json
index 08951af..39d0ef0 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -13,6 +13,12 @@
         "@babel/highlight": "^7.0.0"
       }
     },
+    "@babel/helper-validator-identifier": {
+      "version": "7.12.11",
+      "resolved": "https://registry.npmjs.org/@babel/helper-validator-identifier/-/helper-validator-identifier-7.12.11.tgz",
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+      "dev": true
+    },
     "@babel/highlight": {
       "version": "7.0.0",
       "resolved": "https://registry.npmjs.org/@babel/highlight/-/highlight-7.0.0.tgz",
@@ -232,9 +238,9 @@
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-      "resolved": "https://registry.npmjs.org/@eslint/eslintrc/-/eslintrc-0.1.3.tgz",
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+      "version": "0.3.0",
+      "resolved": "https://registry.npmjs.org/@eslint/eslintrc/-/eslintrc-0.3.0.tgz",
+      "integrity": "sha512-1JTKgrOKAHVivSvOYw+sJOunkBjUOvjqWk1DPja7ZFhIS2mX/4EgTT8M7eTK9jrKhL/FvXXEbQwIs3pg1xp3dg==",
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@@ -244,39 +250,36 @@
         "ignore": "^4.0.6",
         "import-fresh": "^3.2.1",
         "js-yaml": "^3.13.1",
-        "lodash": "^4.17.19",
+        "lodash": "^4.17.20",
         "minimatch": "^3.0.4",
         "strip-json-comments": "^3.1.1"
       },
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+          "resolved": "https://registry.npmjs.org/debug/-/debug-4.3.1.tgz",
+          "integrity": "sha512-doEwdvm4PCeK4K3RQN2ZC2BYUBaxwLARCqZmMjtF8a51J2Rb0xpVloFRnCODwqjpwnAoao4pelN8l3RJdv3gRQ==",
           "dev": true,
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-          "requires": {
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-          "resolved": "https://registry.npmjs.org/import-fresh/-/import-fresh-3.2.1.tgz",
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+          "version": "3.3.0",
+          "resolved": "https://registry.npmjs.org/import-fresh/-/import-fresh-3.3.0.tgz",
+          "integrity": "sha512-veYYhQa+D1QBKznvhUHxb8faxlrwUnxseDAbAp457E0wLNio2bOSKnjYDhMj+YiAq61xrMGhQk9iXVk5FzgQMw==",
           "dev": true,
           "requires": {
             "parent-module": "^1.0.0",
             "resolve-from": "^4.0.0"
           }
         },
+        "lodash": {
+          "version": "4.17.21",
+          "resolved": "https://registry.npmjs.org/lodash/-/lodash-4.17.21.tgz",
+          "integrity": "sha512-v2kDEe57lecTulaDIuNTPy3Ry4gLGJ6Z1O3vE1krgXZNrsQ+LFTGHVxVjcXPs17LhbZVGedAJv8XZ1tvj5FvSg==",
+          "dev": true
+        },
         "ms": {
           "version": "2.1.2",
           "resolved": "https://registry.npmjs.org/ms/-/ms-2.1.2.tgz",
@@ -288,12 +291,6 @@
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-        },
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-          "resolved": "https://registry.npmjs.org/type-fest/-/type-fest-0.8.1.tgz",
-          "integrity": "sha512-4dbzIzqvjtgiM5rw1k5rEHtBANKmdudhGyBEajN01fEyhaAIhsoKNy6y7+IN93IfpFtwY9iqi7kD+xwKhQsNJA==",
-          "dev": true
         }
       }
     },
@@ -885,6 +882,27 @@
       "dev": true,
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     },
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+      "version": "4.0.0",
+      "resolved": "https://registry.npmjs.org/@types/configstore/-/configstore-4.0.0.tgz",
+      "integrity": "sha512-SvCBBPzOIe/3Tu7jTl2Q8NjITjLmq9m7obzjSyb8PXWWZ31xVK6w4T6v8fOx+lrgQnqk3Yxc00LDolFsSakKCA==",
+      "dev": true
+    },
+    "@types/fs-extra": {
+      "version": "9.0.7",
+      "resolved": "https://registry.npmjs.org/@types/fs-extra/-/fs-extra-9.0.7.tgz",
+      "integrity": "sha512-YGq2A6Yc3bldrLUlm17VNWOnUbnEzJ9CMgOeLFtQF3HOCN5lQBO8VyjG00a5acA5NNSM30kHVGp1trZgnVgi1Q==",
+      "dev": true,
+      "requires": {
+        "@types/node": "*"
+      }
+    },
+    "@types/json-schema": {
+      "version": "7.0.7",
+      "resolved": "https://registry.npmjs.org/@types/json-schema/-/json-schema-7.0.7.tgz",
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+      "dev": true
+    },
     "@types/json5": {
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       "resolved": "https://registry.npmjs.org/@types/json5/-/json5-0.0.29.tgz",
@@ -898,9 +916,9 @@
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+      "resolved": "https://registry.npmjs.org/@types/node/-/node-14.14.31.tgz",
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       "dev": true
     },
+    "@types/numeral": {
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+      "resolved": "https://registry.npmjs.org/@types/numeral/-/numeral-2.0.0.tgz",
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+      "resolved": "https://registry.npmjs.org/@typescript-eslint/eslint-plugin/-/eslint-plugin-4.15.2.tgz",
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@@ -2070,6 +2264,49 @@
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+      "integrity": "sha512-RdJUflcE3cUzKiMqQgsCu06FPu9UdIJO0beYbPhHN4k6apgJtifcoCtT9bcxOpYBtpD2kCM6Sbzg4CausW/PKQ==",
+      "dev": true
+    },
     "js-yaml": {
-      "version": "3.14.0",
-      "resolved": "https://registry.npmjs.org/js-yaml/-/js-yaml-3.14.0.tgz",
-      "integrity": "sha512-/4IbIeHcD9VMHFqDR/gQ7EdZdLimOvW2DdcxFjdyyZ9NsbS+ccrXqVWDtab/lRl5AlUqmpBx8EhPaWR+OtY17A==",
+      "version": "3.14.1",
+      "resolved": "https://registry.npmjs.org/js-yaml/-/js-yaml-3.14.1.tgz",
+      "integrity": "sha512-okMH7OXXJ7YrN9Ok3/SXrnu4iX9yOk+25nqX4imS2npuvTYDmo/QEZoqwZkYaIDk3jVvBOTOIEgEhaLOynBS9g==",
       "dev": true,
       "requires": {
         "argparse": "^1.0.7",
@@ -4981,6 +5177,15 @@
       "resolved": "https://registry.npmjs.org/lowercase-keys/-/lowercase-keys-1.0.1.tgz",
       "integrity": "sha512-G2Lj61tXDnVFFOi8VZds+SoQjtQC3dgokKdDG2mTm1tx4m50NUHBOZSBwQQHyy0V12A0JTG4icfZQH+xPyh8VA=="
     },
+    "lru-cache": {
+      "version": "6.0.0",
+      "resolved": "https://registry.npmjs.org/lru-cache/-/lru-cache-6.0.0.tgz",
+      "integrity": "sha512-Jo6dJ04CmSjuznwJSS3pUeWmd/H0ffTlkXXgwZi+eq1UCmqQwCh+eLsYOYCwY991i2Fah4h1BEMCx4qThGbsiA==",
+      "dev": true,
+      "requires": {
+        "yallist": "^4.0.0"
+      }
+    },
     "macos-release": {
       "version": "2.4.1",
       "resolved": "https://registry.npmjs.org/macos-release/-/macos-release-2.4.1.tgz",
@@ -5271,15 +5476,6 @@
         }
       }
     },
-    "mkdirp": {
-      "version": "0.5.5",
-      "resolved": "https://registry.npmjs.org/mkdirp/-/mkdirp-0.5.5.tgz",
-      "integrity": "sha512-NKmAlESf6jMGym1++R0Ra7wvhV+wFW63FaSOFPwRahvea0gMUcGUhVeAg/0BC0wiv9ih5NYPB1Wn1UEI1/L+xQ==",
-      "dev": true,
-      "requires": {
-        "minimist": "^1.2.5"
-      }
-    },
     "modify-values": {
       "version": "1.0.1",
       "resolved": "https://registry.npmjs.org/modify-values/-/modify-values-1.0.1.tgz",
@@ -9521,6 +9717,12 @@
       "integrity": "sha1-jGStX9MNqxyXbiNE/+f3kqam30I=",
       "dev": true
     },
+    "require-from-string": {
+      "version": "2.0.2",
+      "resolved": "https://registry.npmjs.org/require-from-string/-/require-from-string-2.0.2.tgz",
+      "integrity": "sha512-Xf0nWe6RseziFMu+Ap9biiUbmplq6S9/p+7w7YXP/JBHhrUDDUhwa+vANyubuqfZWTveU//DYVGsDG7RKL/vEw==",
+      "dev": true
+    },
     "require-main-filename": {
       "version": "2.0.0",
       "resolved": "https://registry.npmjs.org/require-main-filename/-/require-main-filename-2.0.0.tgz",
@@ -9596,9 +9798,9 @@
       "dev": true
     },
     "rimraf": {
-      "version": "2.6.3",
-      "resolved": "https://registry.npmjs.org/rimraf/-/rimraf-2.6.3.tgz",
-      "integrity": "sha512-mwqeW5XsA2qAejG46gYdENaxXjx9onRNCfn7L0duuP4hCuTIi/QO7PDK07KJfp1d+izWPrzEJDcSqBa0OZQriA==",
+      "version": "3.0.2",
+      "resolved": "https://registry.npmjs.org/rimraf/-/rimraf-3.0.2.tgz",
+      "integrity": "sha512-JZkJMZkAGFFPP2YqXZXPbMlMBgsxzE8ILs4lMIX/2o0L9UBw9O/Y3o6wFw/i9YLapcUJWwqbi3kdxIPdC62TIA==",
       "dev": true,
       "requires": {
         "glob": "^7.1.3"
@@ -10043,14 +10245,46 @@
       "dev": true
     },
     "slice-ansi": {
-      "version": "2.1.0",
-      "resolved": "https://registry.npmjs.org/slice-ansi/-/slice-ansi-2.1.0.tgz",
-      "integrity": "sha512-Qu+VC3EwYLldKa1fCxuuvULvSJOKEgk9pi8dZeCVK7TqBfUNTH4sFkk4joj8afVSfAYgJoSOetjx9QWOJ5mYoQ==",
+      "version": "4.0.0",
+      "resolved": "https://registry.npmjs.org/slice-ansi/-/slice-ansi-4.0.0.tgz",
+      "integrity": "sha512-qMCMfhY040cVHT43K9BFygqYbUPFZKHOg7K73mtTWJRb8pyP3fzf4Ixd5SzdEJQ6MRUg/WBnOLxghZtKKurENQ==",
       "dev": true,
       "requires": {
-        "ansi-styles": "^3.2.0",
-        "astral-regex": "^1.0.0",
-        "is-fullwidth-code-point": "^2.0.0"
+        "ansi-styles": "^4.0.0",
+        "astral-regex": "^2.0.0",
+        "is-fullwidth-code-point": "^3.0.0"
+      },
+      "dependencies": {
+        "ansi-styles": {
+          "version": "4.3.0",
+          "resolved": "https://registry.npmjs.org/ansi-styles/-/ansi-styles-4.3.0.tgz",
+          "integrity": "sha512-zbB9rCJAT1rbjiVDb2hqKFHNYLxgtk8NURxZ3IZwD3F6NtxbXZQCnnSi1Lkx+IDohdPlFp222wVALIheZJQSEg==",
+          "dev": true,
+          "requires": {
+            "color-convert": "^2.0.1"
+          }
+        },
+        "color-convert": {
+          "version": "2.0.1",
+          "resolved": "https://registry.npmjs.org/color-convert/-/color-convert-2.0.1.tgz",
+          "integrity": "sha512-RRECPsj7iu/xb5oKYcsFHSppFNnsj/52OVTRKb4zP5onXwVF3zVmmToNcOfGC+CRDpfK/U584fMg38ZHCaElKQ==",
+          "dev": true,
+          "requires": {
+            "color-name": "~1.1.4"
+          }
+        },
+        "color-name": {
+          "version": "1.1.4",
+          "resolved": "https://registry.npmjs.org/color-name/-/color-name-1.1.4.tgz",
+          "integrity": "sha512-dOy+3AuW3a2wNbZHIuMZpTcgjGuLU/uBL/ubcZF9OXbDo8ff4O8yVp5Bf0efS8uEoYo5q4Fx7dY9OgQGXgAsQA==",
+          "dev": true
+        },
+        "is-fullwidth-code-point": {
+          "version": "3.0.0",
+          "resolved": "https://registry.npmjs.org/is-fullwidth-code-point/-/is-fullwidth-code-point-3.0.0.tgz",
+          "integrity": "sha512-zymm5+u+sCsSWyD9qNaejV3DFvhCKclKdizYaJUuHA83RLjb7nSuGnddCHGv0hk+KY7BMAlsWeK4Ueg6EV6XQg==",
+          "dev": true
+        }
       }
     },
     "snapdragon": {
@@ -10485,41 +10719,77 @@
       }
     },
     "table": {
-      "version": "5.4.6",
-      "resolved": "https://registry.npmjs.org/table/-/table-5.4.6.tgz",
-      "integrity": "sha512-wmEc8m4fjnob4gt5riFRtTu/6+4rSe12TpAELNSqHMfF3IqnA+CH37USM6/YR3qRZv7e56kAEAtd6nKZaxe0Ug==",
+      "version": "6.0.7",
+      "resolved": "https://registry.npmjs.org/table/-/table-6.0.7.tgz",
+      "integrity": "sha512-rxZevLGTUzWna/qBLObOe16kB2RTnnbhciwgPbMMlazz1yZGVEgnZK762xyVdVznhqxrfCeBMmMkgOOaPwjH7g==",
       "dev": true,
       "requires": {
-        "ajv": "^6.10.2",
-        "lodash": "^4.17.14",
-        "slice-ansi": "^2.1.0",
-        "string-width": "^3.0.0"
+        "ajv": "^7.0.2",
+        "lodash": "^4.17.20",
+        "slice-ansi": "^4.0.0",
+        "string-width": "^4.2.0"
       },
       "dependencies": {
+        "ajv": {
+          "version": "7.1.1",
+          "resolved": "https://registry.npmjs.org/ajv/-/ajv-7.1.1.tgz",
+          "integrity": "sha512-ga/aqDYnUy/o7vbsRTFhhTsNeXiYb5JWDIcRIeZfwRNCefwjNTVYCGdGSUrEmiu3yDK3vFvNbgJxvrQW4JXrYQ==",
+          "dev": true,
+          "requires": {
+            "fast-deep-equal": "^3.1.1",
+            "json-schema-traverse": "^1.0.0",
+            "require-from-string": "^2.0.2",
+            "uri-js": "^4.2.2"
+          }
+        },
         "ansi-regex": {
-          "version": "4.1.0",
-          "resolved": "https://registry.npmjs.org/ansi-regex/-/ansi-regex-4.1.0.tgz",
-          "integrity": "sha512-1apePfXM1UOSqw0o9IiFAovVz9M5S1Dg+4TrDwfMewQ6p/rmMueb7tWZjQ1rx4Loy1ArBggoqGpfqqdI4rondg==",
+          "version": "5.0.0",
+          "resolved": "https://registry.npmjs.org/ansi-regex/-/ansi-regex-5.0.0.tgz",
+          "integrity": "sha512-bY6fj56OUQ0hU1KjFNDQuJFezqKdrAyFdIevADiqrWHwSlbmBNMHp5ak2f40Pm8JTFyM2mqxkG6ngkHO11f/lg==",
+          "dev": true
+        },
+        "emoji-regex": {
+          "version": "8.0.0",
+          "resolved": "https://registry.npmjs.org/emoji-regex/-/emoji-regex-8.0.0.tgz",
+          "integrity": "sha512-MSjYzcWNOA0ewAHpz0MxpYFvwg6yjy1NG3xteoqz644VCo/RPgnr1/GGt+ic3iJTzQ8Eu3TdM14SawnVUmGE6A==",
+          "dev": true
+        },
+        "is-fullwidth-code-point": {
+          "version": "3.0.0",
+          "resolved": "https://registry.npmjs.org/is-fullwidth-code-point/-/is-fullwidth-code-point-3.0.0.tgz",
+          "integrity": "sha512-zymm5+u+sCsSWyD9qNaejV3DFvhCKclKdizYaJUuHA83RLjb7nSuGnddCHGv0hk+KY7BMAlsWeK4Ueg6EV6XQg==",
+          "dev": true
+        },
+        "json-schema-traverse": {
+          "version": "1.0.0",
+          "resolved": "https://registry.npmjs.org/json-schema-traverse/-/json-schema-traverse-1.0.0.tgz",
+          "integrity": "sha512-NM8/P9n3XjXhIZn1lLhkFaACTOURQXjWhV4BA/RnOv8xvgqtqpAX9IO4mRQxSx1Rlo4tqzeqb0sOlruaOy3dug==",
+          "dev": true
+        },
+        "lodash": {
+          "version": "4.17.21",
+          "resolved": "https://registry.npmjs.org/lodash/-/lodash-4.17.21.tgz",
+          "integrity": "sha512-v2kDEe57lecTulaDIuNTPy3Ry4gLGJ6Z1O3vE1krgXZNrsQ+LFTGHVxVjcXPs17LhbZVGedAJv8XZ1tvj5FvSg==",
           "dev": true
         },
         "string-width": {
-          "version": "3.1.0",
-          "resolved": "https://registry.npmjs.org/string-width/-/string-width-3.1.0.tgz",
-          "integrity": "sha512-vafcv6KjVZKSgz06oM/H6GDBrAtz8vdhQakGjFIvNrHA6y3HCF1CInLy+QLq8dTJPQ1b+KDUqDFctkdRW44e1w==",
+          "version": "4.2.0",
+          "resolved": "https://registry.npmjs.org/string-width/-/string-width-4.2.0.tgz",
+          "integrity": "sha512-zUz5JD+tgqtuDjMhwIg5uFVV3dtqZ9yQJlZVfq4I01/K5Paj5UHj7VyrQOJvzawSVlKpObApbfD0Ed6yJc+1eg==",
           "dev": true,
           "requires": {
-            "emoji-regex": "^7.0.1",
-            "is-fullwidth-code-point": "^2.0.0",
-            "strip-ansi": "^5.1.0"
+            "emoji-regex": "^8.0.0",
+            "is-fullwidth-code-point": "^3.0.0",
+            "strip-ansi": "^6.0.0"
           }
         },
         "strip-ansi": {
-          "version": "5.2.0",
-          "resolved": "https://registry.npmjs.org/strip-ansi/-/strip-ansi-5.2.0.tgz",
-          "integrity": "sha512-DuRs1gKbBqsMKIZlrffwlug8MHkcnpjs5VPmL1PAh+mA30U0DTotfDZ0d2UUsXpPmPmMMJ6W773MaA3J+lbiWA==",
+          "version": "6.0.0",
+          "resolved": "https://registry.npmjs.org/strip-ansi/-/strip-ansi-6.0.0.tgz",
+          "integrity": "sha512-AuvKTrTfQNYNIctbR1K/YGTR1756GycPsg7b9bdV9Duqur4gv6aKqHXah67Z8ImS7WEz5QVcOtlfW2rZEugt6w==",
           "dev": true,
           "requires": {
-            "ansi-regex": "^4.1.0"
+            "ansi-regex": "^5.0.0"
           }
         }
       }
@@ -10767,6 +11037,15 @@
       "integrity": "sha512-4krF8scpejhaOgqzBEcGM7yDIEfi0/8+8zDRZhNZZ2kjmHJ4hv3zCbQWxoJGz1iw5U0Jl0nma13xzHXcncMavQ==",
       "dev": true
     },
+    "tsutils": {
+      "version": "3.20.0",
+      "resolved": "https://registry.npmjs.org/tsutils/-/tsutils-3.20.0.tgz",
+      "integrity": "sha512-RYbuQuvkhuqVeXweWT3tJLKOEJ/UUw9GjNEZGWdrLLlM+611o1gwLHBpxoFJKKl25fLprp2eVthtKs5JOrNeXg==",
+      "dev": true,
+      "requires": {
+        "tslib": "^1.8.1"
+      }
+    },
     "type-check": {
       "version": "0.4.0",
       "resolved": "https://registry.npmjs.org/type-check/-/type-check-0.4.0.tgz",
@@ -10790,6 +11069,12 @@
         "is-typedarray": "^1.0.0"
       }
     },
+    "typescript": {
+      "version": "4.1.5",
+      "resolved": "https://registry.npmjs.org/typescript/-/typescript-4.1.5.tgz",
+      "integrity": "sha512-6OSu9PTIzmn9TCDiovULTnET6BgXtDYL4Gg4szY+cGsc3JP1dQL8qvE8kShTRx1NIw4Q9IBHlwODjkjWEtMUyA==",
+      "dev": true
+    },
     "uglify-js": {
       "version": "3.9.1",
       "resolved": "https://registry.npmjs.org/uglify-js/-/uglify-js-3.9.1.tgz",
@@ -10947,9 +11232,9 @@
       }
     },
     "uri-js": {
-      "version": "4.4.0",
-      "resolved": "https://registry.npmjs.org/uri-js/-/uri-js-4.4.0.tgz",
-      "integrity": "sha512-B0yRTzYdUCCn9n+F4+Gh4yIDtMQcaJsmYBDsTSG8g/OejKBodLQ2IHfN3bM7jUsRXndopT7OIXWdYqc1fjmV6g==",
+      "version": "4.4.1",
+      "resolved": "https://registry.npmjs.org/uri-js/-/uri-js-4.4.1.tgz",
+      "integrity": "sha512-7rKUyy33Q1yc98pQ1DAmLtwX109F7TIfWlW1Ydo8Wl1ii1SeHieeh0HHfPeL2fMXK6z0s8ecKs9frCuLJvndBg==",
       "dev": true,
       "requires": {
         "punycode": "^2.1.0"
@@ -10988,9 +11273,9 @@
       "dev": true
     },
     "v8-compile-cache": {
-      "version": "2.1.1",
-      "resolved": "https://registry.npmjs.org/v8-compile-cache/-/v8-compile-cache-2.1.1.tgz",
-      "integrity": "sha512-8OQ9CL+VWyt3JStj7HX7/ciTL2V3Rl1Wf5OL+SNTm0yK1KvtReVulksyeRnCANHHuUxHlQig+JJDlUhBt1NQDQ==",
+      "version": "2.2.0",
+      "resolved": "https://registry.npmjs.org/v8-compile-cache/-/v8-compile-cache-2.2.0.tgz",
+      "integrity": "sha512-gTpR5XQNKFwOd4clxfnhaqvfqMpqEwr4tOtCyz4MtYZX2JYhfr1JvBFKdS+7K/9rfpZR3VLX+YWBbKoxCgS43Q==",
       "dev": true
     },
     "validate-npm-package-license": {
@@ -11131,15 +11416,6 @@
       "resolved": "https://registry.npmjs.org/wrappy/-/wrappy-1.0.2.tgz",
       "integrity": "sha1-tSQ9jz7BqjXxNkYFvA0QNuMKtp8="
     },
-    "write": {
-      "version": "1.0.3",
-      "resolved": "https://registry.npmjs.org/write/-/write-1.0.3.tgz",
-      "integrity": "sha512-/lg70HAjtkUgWPVZhZcm+T4hkL8Zbtp1nFNOn3lRrxnlv50SRBv7cR7RqR+GMsd3hUXy9hWBo4CHTbFTcOYwig==",
-      "dev": true,
-      "requires": {
-        "mkdirp": "^0.5.1"
-      }
-    },
     "write-file-atomic": {
       "version": "3.0.3",
       "resolved": "https://registry.npmjs.org/write-file-atomic/-/write-file-atomic-3.0.3.tgz",
@@ -11168,6 +11444,12 @@
       "integrity": "sha512-r9S/ZyXu/Xu9q1tYlpsLIsa3EeLXXk0VwlxqTcFRfg9EhMW+17kbt9G0NrgCmhGb5vT2hyhJZLfDGx+7+5Uj/w==",
       "dev": true
     },
+    "yallist": {
+      "version": "4.0.0",
+      "resolved": "https://registry.npmjs.org/yallist/-/yallist-4.0.0.tgz",
+      "integrity": "sha512-3wdGidZyq5PB084XLES5TpOSRA3wjXAlIWMhum2kRcv/41Sn2emQ0dycQW4uZXLejwKvg6EsvbdlVL+FYEct7A==",
+      "dev": true
+    },
     "yaml": {
       "version": "1.8.3",
       "resolved": "https://registry.npmjs.org/yaml/-/yaml-1.8.3.tgz",
diff --git a/package.json b/package.json
index b553a01..1b4b35e 100644
--- a/package.json
+++ b/package.json
@@ -2,18 +2,19 @@
   "name": "npm-audit-html",
   "version": "0.0.0-development",
   "description": "Generate a HTML report for NPM Audit",
-  "main": "index.js",
+  "main": "dist/src/index.js",
   "bin": {
-    "npm-audit-html": "index.js"
+    "npm-audit-html": "dist/src/index.js"
   },
   "scripts": {
     "test": "npm run lint && npm run audit-report && npm audit",
+    "watch": "tsc --watch",
     "test-ci": "cd test; npm i && npm audit --json | node ../index.js",
-    "lint": "eslint '*.js' 'lib/**/*.js'",
-    "lint:fix": "eslint '*.js' 'lib/**/*.js' --fix",
+    "lint": "eslint . --ext .ts",
+    "lint:fix": "eslint . --ext .ts --fix",
     "lint!": "npm run format && npm run lint:fix",
     "format": "prettier --write '*.js' 'lib/**/*.js'",
-    "audit-report": "npm audit --json | node index.js -o tests/npm-audit.html",
+    "audit-report": "npm audit --json | node dist/src/index.js -o tests/npm-audit.html",
     "cm": "git-cz",
     "pre-commit": "lint-staged",
     "semantic-release": "semantic-release"
@@ -22,9 +23,15 @@
   "repository": "eventOneHQ/npm-audit-html",
   "license": "MIT",
   "devDependencies": {
+    "@types/fs-extra": "^9.0.7",
+    "@types/node": "^14.14.31",
+    "@types/numeral": "^2.0.0",
+    "@types/update-notifier": "^5.0.0",
+    "@typescript-eslint/eslint-plugin": "^4.15.2",
+    "@typescript-eslint/parser": "^4.15.2",
     "commitizen": "^4.2.2",
     "cz-conventional-changelog": "^3.3.0",
-    "eslint": "^7.11.0",
+    "eslint": "^7.20.0",
     "eslint-config-standard": "^15.0.0",
     "eslint-plugin-import": "^2.22.1",
     "eslint-plugin-node": "^11.1.0",
@@ -33,11 +40,12 @@
     "husky": "^4.3.0",
     "lint-staged": "^10.4.2",
     "prettier": "^2.1.2",
-    "semantic-release": "^17.2.1"
+    "semantic-release": "^17.2.1",
+    "typescript": "^4.1.5"
   },
   "dependencies": {
     "chalk": "^4.1.0",
-    "commander": "^3.0.2",
+    "commander": "^7.1.0",
     "fs-extra": "^8.1.0",
     "handlebars": "^4.7.6",
     "highlight.js": "^10.3.1",
diff --git a/index.js b/src/index.ts
similarity index 72%
rename from index.js
rename to src/index.ts
index b38643c..671d48f 100644
--- a/index.js
+++ b/src/index.ts
@@ -1,18 +1,20 @@
 #!/usr/bin/env node
+import { Command } from 'commander'
+import updateNotifier from 'update-notifier'
 
-const program = require('commander')
-const updateNotifier = require('update-notifier')
-const fs = require('fs-extra')
-const open = require('open')
-const path = require('path')
+import fs from 'fs-extra'
+import open from 'open'
+import path from 'path'
 
-const reporter = require('./lib/reporter')
-const pkg = require('./package.json')
+import { reporter } from './lib/reporter'
+import pkg from '../package.json'
 
 updateNotifier({ pkg }).notify()
 
 let stdin = ''
 
+const program = new Command()
+
 program
   .version(pkg.version)
   .option('-o, --output [output]', 'output file')
@@ -23,8 +25,11 @@ program
     'template theme `dark` or `light` (defaults to `light`)'
   )
   .option('-t, --template [handlebars file]', 'handlebars template file')
-  .option('-f, --fatal-exit-code', 'exit with code 1 if vulnerabilities were found')
-  .action(async (cmd, env) => {
+  .option(
+    '-f, --fatal-exit-code',
+    'exit with code 1 if vulnerabilities were found'
+  )
+  .action(async cmd => {
     try {
       let data
       if (cmd.input) {
@@ -36,7 +41,14 @@ program
         return process.exit(1)
       }
 
-      await genReport(data, cmd.output, cmd.template, cmd.theme, cmd.open, cmd.fatalExitCode)
+      await genReport(
+        data,
+        cmd.output,
+        cmd.template,
+        cmd.theme,
+        cmd.open,
+        cmd.fatalExitCode
+      )
     } catch (err) {
       console.error('Failed to parse NPM Audit JSON!')
       return process.exit(1)
@@ -44,9 +56,9 @@ program
   })
 
 const genReport = async (
-  data,
+  data: any,
   output = 'npm-audit.html',
-  template,
+  template: string,
   theme = 'light',
   openBrowser = false,
   fatalExitCode = false
@@ -57,7 +69,8 @@ const genReport = async (
       return process.exit(1)
     }
 
-    const templateFile = template || path.join(__dirname, '/templates/template.hbs')
+    const templateFile =
+      template || path.join(__dirname, '../../src/templates/template.hbs')
 
     const modifiedData = await reporter(data, templateFile, output, theme)
 
diff --git a/lib/reporter.js b/src/lib/reporter.ts
similarity index 76%
rename from lib/reporter.js
rename to src/lib/reporter.ts
index 48cee0b..d1fa2b4 100644
--- a/lib/reporter.js
+++ b/src/lib/reporter.ts
@@ -1,13 +1,18 @@
-const terminalLink = require('terminal-link')
-const Handlebars = require('handlebars')
-const moment = require('moment')
-const marked = require('marked')
-const fs = require('fs-extra')
-const chalk = require('chalk')
-const numeral = require('numeral')
-const highlight = require('highlight.js')
+import terminalLink from 'terminal-link'
+import Handlebars from 'handlebars'
+import moment from 'moment'
+import marked from 'marked'
+import fs from 'fs-extra'
+import chalk from 'chalk'
+import numeral from 'numeral'
+import highlight from 'highlight.js'
 
-const severityMap = {
+const severityMap: {
+  [key: string]: {
+    color: string
+    number: number
+  }
+} = {
   info: {
     color: 'info',
     number: 5
@@ -30,12 +35,12 @@ const severityMap = {
   }
 }
 
-const generateTemplate = async (data, template) => {
+const generateTemplate = async (data: any, template: string) => {
   const htmlTemplate = await fs.readFile(template, 'utf8')
   return Handlebars.compile(htmlTemplate)(data)
 }
 
-const writeReport = async (report, output) => {
+const writeReport = async (report, output: string) => {
   await fs.ensureFile(output)
   await fs.writeFile(output, report)
 }
@@ -60,7 +65,12 @@ const modifyData = async data => {
   return data
 }
 
-module.exports = async (data, templateFile, outputFile, theme) => {
+export const reporter = async (
+  data: any,
+  templateFile: string,
+  outputFile: string,
+  theme: string
+): Promise<any> => {
   try {
     if (!data.metadata) {
       if (data.updated) {
@@ -114,17 +124,17 @@ Handlebars.registerHelper('if_eq', (a, b, opts) => {
 
 Handlebars.registerHelper(
   'severityClass',
-  severity => severityMap[severity].color
+  (severity: string) => severityMap[severity].color
 )
 
 Handlebars.registerHelper(
   'severityNumber',
-  severity => severityMap[severity].number
+  (severity: string) => severityMap[severity].number
 )
 
 Handlebars.registerHelper('markdown', source =>
   marked(source, {
-    highlight: code => {
+    highlight: (code: string) => {
       return highlight.highlightAuto(code).value
     },
     gfm: true
diff --git a/templates/template.hbs b/src/templates/template.hbs
similarity index 100%
rename from templates/template.hbs
rename to src/templates/template.hbs