diff --git a/cli.js b/cli.js
index 0937bcc3..f11603ce 100755
--- a/cli.js
+++ b/cli.js
@@ -107,7 +107,7 @@ const isAlias = (key) => {
     return false;
   }
 
-  const aliases = Object.keys(meowOpts.flags)
+  const aliases = Object.keys(meowOpts.flags) // eslint-disable-line unicorn/prefer-set-has
     .filter((k) => meowOpts.flags[k].alias)
     .map((k) => meowOpts.flags[k].alias);
 
diff --git a/package-lock.json b/package-lock.json
index 62c6a265..092962c6 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -330,15 +330,6 @@
         "@babel/helper-plugin-utils": "^7.8.0"
       }
     },
-    "@babel/runtime": {
-      "version": "7.9.2",
-      "resolved": "https://registry.npmjs.org/@babel/runtime/-/runtime-7.9.2.tgz",
-      "integrity": "sha512-NE2DtOdufG7R5vnfQUTehdTfNycfUANEtCa9PssN9O/xmTzP4E08UI797ixaei6hBEVL9BI/PsdJS5x7mWoB9Q==",
-      "dev": true,
-      "requires": {
-        "regenerator-runtime": "^0.13.4"
-      }
-    },
     "@babel/template": {
       "version": "7.8.6",
       "resolved": "https://registry.npmjs.org/@babel/template/-/template-7.8.6.tgz",
@@ -1190,45 +1181,45 @@
       "dev": true
     },
     "@typescript-eslint/eslint-plugin": {
-      "version": "2.27.0",
-      "resolved": "https://registry.npmjs.org/@typescript-eslint/eslint-plugin/-/eslint-plugin-2.27.0.tgz",
-      "integrity": "sha512-/my+vVHRN7zYgcp0n4z5A6HAK7bvKGBiswaM5zIlOQczsxj/aiD7RcgD+dvVFuwFaGh5+kM7XA6Q6PN0bvb1tw==",
+      "version": "2.34.0",
+      "resolved": "https://registry.npmjs.org/@typescript-eslint/eslint-plugin/-/eslint-plugin-2.34.0.tgz",
+      "integrity": "sha512-4zY3Z88rEE99+CNvTbXSyovv2z9PNOVffTWD2W8QF5s2prBQtwN2zadqERcrHpcR7O/+KMI3fcTAmUUhK/iQcQ==",
       "dev": true,
       "requires": {
-        "@typescript-eslint/experimental-utils": "2.27.0",
+        "@typescript-eslint/experimental-utils": "2.34.0",
         "functional-red-black-tree": "^1.0.1",
         "regexpp": "^3.0.0",
         "tsutils": "^3.17.1"
       }
     },
     "@typescript-eslint/experimental-utils": {
-      "version": "2.27.0",
-      "resolved": "https://registry.npmjs.org/@typescript-eslint/experimental-utils/-/experimental-utils-2.27.0.tgz",
-      "integrity": "sha512-vOsYzjwJlY6E0NJRXPTeCGqjv5OHgRU1kzxHKWJVPjDYGbPgLudBXjIlc+OD1hDBZ4l1DLbOc5VjofKahsu9Jw==",
+      "version": "2.34.0",
+      "resolved": "https://registry.npmjs.org/@typescript-eslint/experimental-utils/-/experimental-utils-2.34.0.tgz",
+      "integrity": "sha512-eS6FTkq+wuMJ+sgtuNTtcqavWXqsflWcfBnlYhg/nS4aZ1leewkXGbvBhaapn1q6qf4M71bsR1tez5JTRMuqwA==",
       "dev": true,
       "requires": {
         "@types/json-schema": "^7.0.3",
-        "@typescript-eslint/typescript-estree": "2.27.0",
+        "@typescript-eslint/typescript-estree": "2.34.0",
         "eslint-scope": "^5.0.0",
         "eslint-utils": "^2.0.0"
       }
     },
     "@typescript-eslint/parser": {
-      "version": "2.27.0",
-      "resolved": "https://registry.npmjs.org/@typescript-eslint/parser/-/parser-2.27.0.tgz",
-      "integrity": "sha512-HFUXZY+EdwrJXZo31DW4IS1ujQW3krzlRjBrFRrJcMDh0zCu107/nRfhk/uBasO8m0NVDbBF5WZKcIUMRO7vPg==",
+      "version": "2.34.0",
+      "resolved": "https://registry.npmjs.org/@typescript-eslint/parser/-/parser-2.34.0.tgz",
+      "integrity": "sha512-03ilO0ucSD0EPTw2X4PntSIRFtDPWjrVq7C3/Z3VQHRC7+13YB55rcJI3Jt+YgeHbjUdJPcPa7b23rXCBokuyA==",
       "dev": true,
       "requires": {
         "@types/eslint-visitor-keys": "^1.0.0",
-        "@typescript-eslint/experimental-utils": "2.27.0",
-        "@typescript-eslint/typescript-estree": "2.27.0",
+        "@typescript-eslint/experimental-utils": "2.34.0",
+        "@typescript-eslint/typescript-estree": "2.34.0",
         "eslint-visitor-keys": "^1.1.0"
       }
     },
     "@typescript-eslint/typescript-estree": {
-      "version": "2.27.0",
-      "resolved": "https://registry.npmjs.org/@typescript-eslint/typescript-estree/-/typescript-estree-2.27.0.tgz",
-      "integrity": "sha512-t2miCCJIb/FU8yArjAvxllxbTiyNqaXJag7UOpB5DVoM3+xnjeOngtqlJkLRnMtzaRcJhe3CIR9RmL40omubhg==",
+      "version": "2.34.0",
+      "resolved": "https://registry.npmjs.org/@typescript-eslint/typescript-estree/-/typescript-estree-2.34.0.tgz",
+      "integrity": "sha512-OMAr+nJWKdlVM9LOqCqh3pQQPwxHAN7Du8DR6dmwCrAmxtiXQnhHJ6tBNtf+cggqfo51SG/FCwnKhXCIM7hnVg==",
       "dev": true,
       "requires": {
         "debug": "^4.1.1",
@@ -1236,14 +1227,14 @@
         "glob": "^7.1.6",
         "is-glob": "^4.0.1",
         "lodash": "^4.17.15",
-        "semver": "^6.3.0",
+        "semver": "^7.3.2",
         "tsutils": "^3.17.1"
       },
       "dependencies": {
         "semver": {
-          "version": "6.3.0",
-          "resolved": "https://registry.npmjs.org/semver/-/semver-6.3.0.tgz",
-          "integrity": "sha512-b39TBaTSfV6yBrapU89p5fKekE2m/NwnDocOVruQFS1/veMgdzuPcnOM34M6CwxW8jH/lxEa5rBoDeUwu5HHTw==",
+          "version": "7.3.2",
+          "resolved": "https://registry.npmjs.org/semver/-/semver-7.3.2.tgz",
+          "integrity": "sha512-OrOb32TeeambH6UrhtShmF7CRDqhL6/5XpPNp2DuRH6+9QLw/orhp72j87v8Qa1ScDkvrrBNpZcDejAirJmfXQ==",
           "dev": true
         }
       }
@@ -1615,6 +1606,14 @@
         "bn.js": "^4.0.0",
         "inherits": "^2.0.1",
         "minimalistic-assert": "^1.0.0"
+      },
+      "dependencies": {
+        "bn.js": {
+          "version": "4.11.9",
+          "resolved": "https://registry.npmjs.org/bn.js/-/bn.js-4.11.9.tgz",
+          "integrity": "sha512-E6QoYqCKZfgatHTdHzs1RRKP7ip4vvm+EyRUeE2RF0NblwVvb0p6jSVeNTOFxPn26QXN2o6SMfNxKp6kU8zQaw==",
+          "dev": true
+        }
       }
     },
     "assert": {
@@ -2057,9 +2056,9 @@
       }
     },
     "bn.js": {
-      "version": "4.11.8",
-      "resolved": "https://registry.npmjs.org/bn.js/-/bn.js-4.11.8.tgz",
-      "integrity": "sha512-ItfYfPLkWHUjckQCk8xC+LwxgK8NYcXywGigJgSwOP8Y2iyWT4f2vsZnoOXTTbo+o5yXmIUJ4gn5538SO5S3gA==",
+      "version": "5.1.2",
+      "resolved": "https://registry.npmjs.org/bn.js/-/bn.js-5.1.2.tgz",
+      "integrity": "sha512-40rZaf3bUNKTVYu9sIeeEGOg7g14Yvnj9kH7b50EiwX0Q7A6umbvfI5tvHaOERH0XigqKkfLkFQxzb4e6CIXnA==",
       "dev": true
     },
     "boolbase": {
@@ -2216,21 +2215,44 @@
       "requires": {
         "bn.js": "^4.1.0",
         "randombytes": "^2.0.1"
+      },
+      "dependencies": {
+        "bn.js": {
+          "version": "4.11.9",
+          "resolved": "https://registry.npmjs.org/bn.js/-/bn.js-4.11.9.tgz",
+          "integrity": "sha512-E6QoYqCKZfgatHTdHzs1RRKP7ip4vvm+EyRUeE2RF0NblwVvb0p6jSVeNTOFxPn26QXN2o6SMfNxKp6kU8zQaw==",
+          "dev": true
+        }
       }
     },
     "browserify-sign": {
-      "version": "4.0.4",
-      "resolved": "https://registry.npmjs.org/browserify-sign/-/browserify-sign-4.0.4.tgz",
-      "integrity": "sha1-qk62jl17ZYuqa/alfmMMvXqT0pg=",
+      "version": "4.2.0",
+      "resolved": "https://registry.npmjs.org/browserify-sign/-/browserify-sign-4.2.0.tgz",
+      "integrity": "sha512-hEZC1KEeYuoHRqhGhTy6gWrpJA3ZDjFWv0DE61643ZnOXAKJb3u7yWcrU0mMc9SwAqK1n7myPGndkp0dFG7NFA==",
       "dev": true,
       "requires": {
-        "bn.js": "^4.1.1",
-        "browserify-rsa": "^4.0.0",
-        "create-hash": "^1.1.0",
-        "create-hmac": "^1.1.2",
-        "elliptic": "^6.0.0",
-        "inherits": "^2.0.1",
-        "parse-asn1": "^5.0.0"
+        "bn.js": "^5.1.1",
+        "browserify-rsa": "^4.0.1",
+        "create-hash": "^1.2.0",
+        "create-hmac": "^1.1.7",
+        "elliptic": "^6.5.2",
+        "inherits": "^2.0.4",
+        "parse-asn1": "^5.1.5",
+        "readable-stream": "^3.6.0",
+        "safe-buffer": "^5.2.0"
+      },
+      "dependencies": {
+        "readable-stream": {
+          "version": "3.6.0",
+          "resolved": "https://registry.npmjs.org/readable-stream/-/readable-stream-3.6.0.tgz",
+          "integrity": "sha512-BViHy7LKeTz4oNnkcLJ+lVSL6vpiFeX6/d3oSH8zCW7UxP2onchk+vTGB143xuFjHS3deTgkKoXXymXqymiIdA==",
+          "dev": true,
+          "requires": {
+            "inherits": "^2.0.3",
+            "string_decoder": "^1.1.1",
+            "util-deprecate": "^1.0.1"
+          }
+        }
       }
     },
     "browserify-zlib": {
@@ -2501,9 +2523,9 @@
       }
     },
     "cli-width": {
-      "version": "2.2.0",
-      "resolved": "https://registry.npmjs.org/cli-width/-/cli-width-2.2.0.tgz",
-      "integrity": "sha1-/xnt6Kml5XkyQUewwR8PvLq+1jk=",
+      "version": "2.2.1",
+      "resolved": "https://registry.npmjs.org/cli-width/-/cli-width-2.2.1.tgz",
+      "integrity": "sha512-GRMWDxpOB6Dgk2E5Uo+3eEBvtOOlimMmpbFiKuLFnQzYDavtLFY3K5ona41jgN/WdRZtG7utuVSVTL4HbZHGkw==",
       "dev": true
     },
     "cliui": {
@@ -2795,23 +2817,6 @@
         "unique-string": "^2.0.0",
         "write-file-atomic": "^3.0.0",
         "xdg-basedir": "^4.0.0"
-      },
-      "dependencies": {
-        "crypto-random-string": {
-          "version": "2.0.0",
-          "resolved": "https://registry.npmjs.org/crypto-random-string/-/crypto-random-string-2.0.0.tgz",
-          "integrity": "sha512-v1plID3y9r/lPhviJ1wrXpLeyUIGAZ2SHNYTEapm7/8A9nLPoyvVp3RK/EPFqn5kEznyWgYZNsRtYYIWbuG8KA==",
-          "dev": true
-        },
-        "unique-string": {
-          "version": "2.0.0",
-          "resolved": "https://registry.npmjs.org/unique-string/-/unique-string-2.0.0.tgz",
-          "integrity": "sha512-uNaeirEPvpZWSgzwsPGtU2zVSTrn/8L5q/IexZmH0eH6SA73CmAA5U4GwORTxQAZs95TAXLNqeLoPPNO5gZfWg==",
-          "dev": true,
-          "requires": {
-            "crypto-random-string": "^2.0.0"
-          }
-        }
       }
     },
     "confusing-browser-globals": {
@@ -2888,18 +2893,6 @@
         "yaml": "^1.7.2"
       },
       "dependencies": {
-        "parse-json": {
-          "version": "5.0.0",
-          "resolved": "https://registry.npmjs.org/parse-json/-/parse-json-5.0.0.tgz",
-          "integrity": "sha512-OOY5b7PAEFV0E2Fir1KOkxchnZNCdowAJgQ5NuxjpBKTRP3pQhwkrkxqQjeoKJ+fO7bCpmIZaogI4eZGDMEGOw==",
-          "dev": true,
-          "requires": {
-            "@babel/code-frame": "^7.0.0",
-            "error-ex": "^1.3.1",
-            "json-parse-better-errors": "^1.0.1",
-            "lines-and-columns": "^1.1.6"
-          }
-        },
         "path-type": {
           "version": "4.0.0",
           "resolved": "https://registry.npmjs.org/path-type/-/path-type-4.0.0.tgz",
@@ -2916,6 +2909,14 @@
       "requires": {
         "bn.js": "^4.1.0",
         "elliptic": "^6.0.0"
+      },
+      "dependencies": {
+        "bn.js": {
+          "version": "4.11.9",
+          "resolved": "https://registry.npmjs.org/bn.js/-/bn.js-4.11.9.tgz",
+          "integrity": "sha512-E6QoYqCKZfgatHTdHzs1RRKP7ip4vvm+EyRUeE2RF0NblwVvb0p6jSVeNTOFxPn26QXN2o6SMfNxKp6kU8zQaw==",
+          "dev": true
+        }
       }
     },
     "create-hash": {
@@ -3297,6 +3298,14 @@
         "bn.js": "^4.1.0",
         "miller-rabin": "^4.0.0",
         "randombytes": "^2.0.0"
+      },
+      "dependencies": {
+        "bn.js": {
+          "version": "4.11.9",
+          "resolved": "https://registry.npmjs.org/bn.js/-/bn.js-4.11.9.tgz",
+          "integrity": "sha512-E6QoYqCKZfgatHTdHzs1RRKP7ip4vvm+EyRUeE2RF0NblwVvb0p6jSVeNTOFxPn26QXN2o6SMfNxKp6kU8zQaw==",
+          "dev": true
+        }
       }
     },
     "dir-glob": {
@@ -3410,6 +3419,14 @@
         "inherits": "^2.0.1",
         "minimalistic-assert": "^1.0.0",
         "minimalistic-crypto-utils": "^1.0.0"
+      },
+      "dependencies": {
+        "bn.js": {
+          "version": "4.11.9",
+          "resolved": "https://registry.npmjs.org/bn.js/-/bn.js-4.11.9.tgz",
+          "integrity": "sha512-E6QoYqCKZfgatHTdHzs1RRKP7ip4vvm+EyRUeE2RF0NblwVvb0p6jSVeNTOFxPn26QXN2o6SMfNxKp6kU8zQaw==",
+          "dev": true
+        }
       }
     },
     "emoji-regex": {
@@ -3629,15 +3646,6 @@
             "eslint-visitor-keys": "^1.1.0"
           }
         },
-        "glob-parent": {
-          "version": "5.1.1",
-          "resolved": "https://registry.npmjs.org/glob-parent/-/glob-parent-5.1.1.tgz",
-          "integrity": "sha512-FnI+VGOpnlGHWZxthPGR+QhR78fuiK0sNLkHQv+bL9fQi57lNNdquIbna/WrfROrolq8GK5Ek6BiMwqL/voRYQ==",
-          "dev": true,
-          "requires": {
-            "is-glob": "^4.0.1"
-          }
-        },
         "globals": {
           "version": "12.4.0",
           "resolved": "https://registry.npmjs.org/globals/-/globals-12.4.0.tgz",
@@ -3693,9 +3701,9 @@
       }
     },
     "eslint-config-prettier": {
-      "version": "6.10.1",
-      "resolved": "https://registry.npmjs.org/eslint-config-prettier/-/eslint-config-prettier-6.10.1.tgz",
-      "integrity": "sha512-svTy6zh1ecQojvpbJSgH3aei/Rt7C6i090l5f2WQ4aB05lYHeZIR1qL4wZyyILTbtmnbHP5Yn8MrsOJMGa8RkQ==",
+      "version": "6.11.0",
+      "resolved": "https://registry.npmjs.org/eslint-config-prettier/-/eslint-config-prettier-6.11.0.tgz",
+      "integrity": "sha512-oB8cpLWSAjOVFEJhhyMZh6NOEOtBVziaqdDQ86+qhDHFbZXoRTM7pNSvFRfW/W/L/LrQ38C99J5CGuRBBzBsdA==",
       "dev": true,
       "requires": {
         "get-stdin": "^6.0.0"
@@ -3719,9 +3727,9 @@
       }
     },
     "eslint-config-xo-typescript": {
-      "version": "0.26.0",
-      "resolved": "https://registry.npmjs.org/eslint-config-xo-typescript/-/eslint-config-xo-typescript-0.26.0.tgz",
-      "integrity": "sha512-0bBfXLQX5F7JgJx5HIrSx3bGZk2D8W0uhYXB0jv6L0ztmWl4yqfCn6J4zgjUqMCsahHIjyaafBWrnc6eVaETWg==",
+      "version": "0.28.0",
+      "resolved": "https://registry.npmjs.org/eslint-config-xo-typescript/-/eslint-config-xo-typescript-0.28.0.tgz",
+      "integrity": "sha512-q+mBhTikLjrPOszx6gezd6ZxrbrSHeBp/Z8gGgPowBYvBYG78llfQZxOcsbKN6aM8+S/OFAJP9bk5w/roLDFTA==",
       "dev": true
     },
     "eslint-formatter-pretty": {
@@ -3777,9 +3785,9 @@
           "dev": true
         },
         "resolve": {
-          "version": "1.15.1",
-          "resolved": "https://registry.npmjs.org/resolve/-/resolve-1.15.1.tgz",
-          "integrity": "sha512-84oo6ZTtoTUpjgNEr5SJyzQhzL72gaRodsSfyxC/AXRvwu0Yse9H8eF9IpGo7b8YetZhlI6v7ZQ6bKBFV/6S7w==",
+          "version": "1.17.0",
+          "resolved": "https://registry.npmjs.org/resolve/-/resolve-1.17.0.tgz",
+          "integrity": "sha512-ic+7JYiV8Vi2yzQGFWOkiZD5Z9z7O2Zhm9XMaTxdJExKasieFCr+yXZ/WmXsckHiKl12ar0y6XiXDx3m4RHn1w==",
           "dev": true,
           "requires": {
             "path-parse": "^1.0.6"
@@ -3821,9 +3829,9 @@
           "dev": true
         },
         "resolve": {
-          "version": "1.15.1",
-          "resolved": "https://registry.npmjs.org/resolve/-/resolve-1.15.1.tgz",
-          "integrity": "sha512-84oo6ZTtoTUpjgNEr5SJyzQhzL72gaRodsSfyxC/AXRvwu0Yse9H8eF9IpGo7b8YetZhlI6v7ZQ6bKBFV/6S7w==",
+          "version": "1.17.0",
+          "resolved": "https://registry.npmjs.org/resolve/-/resolve-1.17.0.tgz",
+          "integrity": "sha512-ic+7JYiV8Vi2yzQGFWOkiZD5Z9z7O2Zhm9XMaTxdJExKasieFCr+yXZ/WmXsckHiKl12ar0y6XiXDx3m4RHn1w==",
           "dev": true,
           "requires": {
             "path-parse": "^1.0.6"
@@ -3917,9 +3925,9 @@
       }
     },
     "eslint-plugin-ava": {
-      "version": "10.2.0",
-      "resolved": "https://registry.npmjs.org/eslint-plugin-ava/-/eslint-plugin-ava-10.2.0.tgz",
-      "integrity": "sha512-1EP9Mn/pau+ZxwRPDspiioRD6GHCSz7RywTmqW01JTxXvX0vKEV0odfWe+QL+jXfmqd83SHHvDJfOvYcyzoxYA==",
+      "version": "10.3.0",
+      "resolved": "https://registry.npmjs.org/eslint-plugin-ava/-/eslint-plugin-ava-10.3.0.tgz",
+      "integrity": "sha512-rNijYwBo+28ahXvifTx3IYzsNjtArAeyowBJ1Rd5dCtW7f0y5aSTBU7sXBpU5o5Eh5/FZvz3lSLVLac8ExYTtA==",
       "dev": true,
       "requires": {
         "deep-strict-equal": "^0.2.0",
@@ -3927,14 +3935,15 @@
         "espree": "^6.1.2",
         "espurify": "^2.0.1",
         "import-modules": "^2.0.0",
+        "micro-spelling-correcter": "^1.1.1",
         "pkg-dir": "^4.2.0",
         "resolve-from": "^5.0.0"
       }
     },
     "eslint-plugin-es": {
-      "version": "3.0.0",
-      "resolved": "https://registry.npmjs.org/eslint-plugin-es/-/eslint-plugin-es-3.0.0.tgz",
-      "integrity": "sha512-6/Jb/J/ZvSebydwbBJO1R9E5ky7YeElfK56Veh7e4QGFHCXoIXGH9HhVz+ibJLM3XJ1XjP+T7rKBLUa/Y7eIng==",
+      "version": "3.0.1",
+      "resolved": "https://registry.npmjs.org/eslint-plugin-es/-/eslint-plugin-es-3.0.1.tgz",
+      "integrity": "sha512-GUmAsJaN4Fc7Gbtl8uOBlayo2DqhwWvEzykMHSCZHU3XdJ+NSzzZcVhXh3VxX5icqQ+oQdIEawXX8xkR3mIFmQ==",
       "dev": true,
       "requires": {
         "eslint-utils": "^2.0.0",
@@ -3952,9 +3961,9 @@
       },
       "dependencies": {
         "ignore": {
-          "version": "5.1.4",
-          "resolved": "https://registry.npmjs.org/ignore/-/ignore-5.1.4.tgz",
-          "integrity": "sha512-MzbUSahkTW1u7JpKKjY7LCARd1fU5W2rLdxlM4kdkayuCwZImjkpluF9CM1aLewYJguPDqewLam18Y6AU69A8A==",
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         "to-absolute-glob": "^2.0.2",
         "typescript": "^3.0.0",
@@ -10797,15 +10796,6 @@
           "integrity": "sha512-3duEwti880xqi4eAMN8AyR4a0ByT90zoYdLlevfrvU43vb0YZwZVfxOgxWrLXXXpyugL0hNZc9G6BiB5B3nUug==",
           "dev": true
         },
-        "braces": {
-          "version": "3.0.2",
-          "resolved": "https://registry.npmjs.org/braces/-/braces-3.0.2.tgz",
-          "integrity": "sha512-b8um+L1RzM3WDSzvhm6gIz1yfTbBt6YTlcEKAvsmqCZZFw46z626lVj9j1yEPW33H5H+lBQpZMP1k8l+78Ha0A==",
-          "dev": true,
-          "requires": {
-            "fill-range": "^7.0.1"
-          }
-        },
         "camelcase": {
           "version": "4.1.0",
           "resolved": "https://registry.npmjs.org/camelcase/-/camelcase-4.1.0.tgz",
@@ -10846,78 +10836,6 @@
             "micromatch": "^3.1.10"
           },
           "dependencies": {
-            "braces": {
-              "version": "2.3.2",
-              "resolved": "https://registry.npmjs.org/braces/-/braces-2.3.2.tgz",
-              "integrity": "sha512-aNdbnj9P8PjdXU4ybaWLK2IF3jc/EoDYbC7AazW6to3TRsfXxscC9UXOB5iDiEQrkyIbWp2SLQda4+QAa7nc3w==",
-              "dev": true,
-              "requires": {
-                "arr-flatten": "^1.1.0",
-                "array-unique": "^0.3.2",
-                "extend-shallow": "^2.0.1",
-                "fill-range": "^4.0.0",
-                "isobject": "^3.0.1",
-                "repeat-element": "^1.1.2",
-                "snapdragon": "^0.8.1",
-                "snapdragon-node": "^2.0.1",
-                "split-string": "^3.0.2",
-                "to-regex": "^3.0.1"
-              },
-              "dependencies": {
-                "extend-shallow": {
-                  "version": "2.0.1",
-                  "resolved": "https://registry.npmjs.org/extend-shallow/-/extend-shallow-2.0.1.tgz",
-                  "integrity": "sha1-Ua99YUrZqfYQ6huvu5idaxxWiQ8=",
-                  "dev": true,
-                  "requires": {
-                    "is-extendable": "^0.1.0"
-                  }
-                }
-              }
-            },
-            "fill-range": {
-              "version": "4.0.0",
-              "resolved": "https://registry.npmjs.org/fill-range/-/fill-range-4.0.0.tgz",
-              "integrity": "sha1-1USBHUKPmOsGpj3EAtJAPDKMOPc=",
-              "dev": true,
-              "requires": {
-                "extend-shallow": "^2.0.1",
-                "is-number": "^3.0.0",
-                "repeat-string": "^1.6.1",
-                "to-regex-range": "^2.1.0"
-              },
-              "dependencies": {
-                "extend-shallow": {
-                  "version": "2.0.1",
-                  "resolved": "https://registry.npmjs.org/extend-shallow/-/extend-shallow-2.0.1.tgz",
-                  "integrity": "sha1-Ua99YUrZqfYQ6huvu5idaxxWiQ8=",
-                  "dev": true,
-                  "requires": {
-                    "is-extendable": "^0.1.0"
-                  }
-                }
-              }
-            },
-            "is-number": {
-              "version": "3.0.0",
-              "resolved": "https://registry.npmjs.org/is-number/-/is-number-3.0.0.tgz",
-              "integrity": "sha1-JP1iAaR4LPUFYcgQJ2r8fRLXEZU=",
-              "dev": true,
-              "requires": {
-                "kind-of": "^3.0.2"
-              },
-              "dependencies": {
-                "kind-of": {
-                  "version": "3.2.2",
-                  "resolved": "https://registry.npmjs.org/kind-of/-/kind-of-3.2.2.tgz",
-                  "integrity": "sha1-MeohpzS6ubuw8yRm2JOupR5KPGQ=",
-                  "dev": true,
-                  "requires": {
-                    "is-buffer": "^1.1.5"
-                  }
-                }
-              }
-            },
             "micromatch": {
               "version": "3.1.10",
               "resolved": "https://registry.npmjs.org/micromatch/-/micromatch-3.1.10.tgz",
@@ -10938,16 +10856,6 @@
                 "snapdragon": "^0.8.1",
                 "to-regex": "^3.0.2"
               }
-            },
-            "to-regex-range": {
-              "version": "2.1.1",
-              "resolved": "https://registry.npmjs.org/to-regex-range/-/to-regex-range-2.1.1.tgz",
-              "integrity": "sha1-fIDBe53+vlmeJzZ+DU3VWQFB2zg=",
-              "dev": true,
-              "requires": {
-                "is-number": "^3.0.0",
-                "repeat-string": "^1.6.1"
-              }
             }
           }
         },
@@ -10960,17 +10868,6 @@
             "to-regex-range": "^5.0.1"
           }
         },
-        "fs-extra": {
-          "version": "8.1.0",
-          "resolved": "https://registry.npmjs.org/fs-extra/-/fs-extra-8.1.0.tgz",
-          "integrity": "sha512-yhlQgA6mnOJUKOsRUFsgJdQCvkKhcz8tlZG5HBQfReYZy46OwLcY+Zia0mtdHsOo9y/hP+CxMN0TU9QxoOtG4g==",
-          "dev": true,
-          "requires": {
-            "graceful-fs": "^4.2.0",
-            "jsonfile": "^4.0.0",
-            "universalify": "^0.1.0"
-          }
-        },
         "get-stdin": {
           "version": "7.0.0",
           "resolved": "https://registry.npmjs.org/get-stdin/-/get-stdin-7.0.0.tgz",
@@ -11034,15 +10931,6 @@
           "integrity": "sha512-41Cifkg6e8TylSpdtTpeLVMqvSBEVzTttHvERD741+pnZ8ANv0004MRL43QKPDlK9cGvNp6NZWZUBlbGXYxxng==",
           "dev": true
         },
-        "jsonfile": {
-          "version": "4.0.0",
-          "resolved": "https://registry.npmjs.org/jsonfile/-/jsonfile-4.0.0.tgz",
-          "integrity": "sha1-h3Gq4HmbZAdrdmQPygWPnBDjPss=",
-          "dev": true,
-          "requires": {
-            "graceful-fs": "^4.1.6"
-          }
-        },
         "locate-path": {
           "version": "2.0.0",
           "resolved": "https://registry.npmjs.org/locate-path/-/locate-path-2.0.0.tgz",
@@ -11092,6 +10980,17 @@
           "requires": {
             "braces": "^3.0.1",
             "picomatch": "^2.0.5"
+          },
+          "dependencies": {
+            "braces": {
+              "version": "3.0.2",
+              "resolved": "https://registry.npmjs.org/braces/-/braces-3.0.2.tgz",
+              "integrity": "sha512-b8um+L1RzM3WDSzvhm6gIz1yfTbBt6YTlcEKAvsmqCZZFw46z626lVj9j1yEPW33H5H+lBQpZMP1k8l+78Ha0A==",
+              "dev": true,
+              "requires": {
+                "fill-range": "^7.0.1"
+              }
+            }
           }
         },
         "minimist-options": {
@@ -11137,9 +11036,9 @@
           "dev": true
         },
         "prettier": {
-          "version": "1.19.1",
-          "resolved": "https://registry.npmjs.org/prettier/-/prettier-1.19.1.tgz",
-          "integrity": "sha512-s7PoyDv/II1ObgQunCbB9PdLmUcBZcnWOcxDh7O0N/UwDEsHyqkW+Qh28jW+mVuCdx7gLB0BotYI1Y6uI9iyew==",
+          "version": "2.0.4",
+          "resolved": "https://registry.npmjs.org/prettier/-/prettier-2.0.4.tgz",
+          "integrity": "sha512-SVJIQ51spzFDvh4fIbCLvciiDMCrRhlN3mbZvv/+ycjvmF5E73bKdGfU8QDLNmjYJf+lsGnDBC4UUnvTe5OO0w==",
           "dev": true
         },
         "quick-lru": {
@@ -11191,9 +11090,9 @@
           }
         },
         "semver": {
-          "version": "7.1.3",
-          "resolved": "https://registry.npmjs.org/semver/-/semver-7.1.3.tgz",
-          "integrity": "sha512-ekM0zfiA9SCBlsKa2X1hxyxiI4L3B6EbVJkkdgQXnSEEaHlGdvyodMruTiulSRWMMB4NeIuYNMC9rTKTz97GxA==",
+          "version": "7.3.2",
+          "resolved": "https://registry.npmjs.org/semver/-/semver-7.3.2.tgz",
+          "integrity": "sha512-OrOb32TeeambH6UrhtShmF7CRDqhL6/5XpPNp2DuRH6+9QLw/orhp72j87v8Qa1ScDkvrrBNpZcDejAirJmfXQ==",
           "dev": true
         },
         "strip-indent": {
@@ -11217,12 +11116,6 @@
           "integrity": "sha1-tAPQuRvlDDMd/EuC7s6yLD3hbSA=",
           "dev": true
         },
-        "universalify": {
-          "version": "0.1.2",
-          "resolved": "https://registry.npmjs.org/universalify/-/universalify-0.1.2.tgz",
-          "integrity": "sha512-rBJeI5CXAlmy1pV+617WB9J63U6XcazHHF2f2dbJix4XzpUF0RS3Zbj0FGIOCAva5P/d/GBOYaACQ1w+0azUkg==",
-          "dev": true
-        },
         "yargs-parser": {
           "version": "10.1.0",
           "resolved": "https://registry.npmjs.org/yargs-parser/-/yargs-parser-10.1.0.tgz",
@@ -11255,13 +11148,10 @@
       "dev": true
     },
     "yaml": {
-      "version": "1.8.3",
-      "resolved": "https://registry.npmjs.org/yaml/-/yaml-1.8.3.tgz",
-      "integrity": "sha512-X/v7VDnK+sxbQ2Imq4Jt2PRUsRsP7UcpSl3Llg6+NRRqWLIvxkMFYtH1FmvwNGYRKKPa+EPA4qDBlI9WVG1UKw==",
-      "dev": true,
-      "requires": {
-        "@babel/runtime": "^7.8.7"
-      }
+      "version": "1.10.0",
+      "resolved": "https://registry.npmjs.org/yaml/-/yaml-1.10.0.tgz",
+      "integrity": "sha512-yr2icI4glYaNG+KWONODapy2/jDdMSDnrONSjblABjD9B4Z5LgiircSt8m8sRZFNi08kG9Sm0uSHtEmP3zaEGg==",
+      "dev": true
     },
     "yargs": {
       "version": "15.3.1",
diff --git a/package.json b/package.json
index f6df9a3a..304c9395 100644
--- a/package.json
+++ b/package.json
@@ -69,7 +69,7 @@
     "stream-array": "^1.1.2",
     "stream-assert": "^2.0.3",
     "vinyl-source-stream": "^2.0.0",
-    "xo": "^0.28.3"
+    "xo": "^0.30.0"
   },
   "xo": {
     "space": 2,
@@ -77,7 +77,8 @@
     "rules": {
       "capitalized-comments": "off",
       "unicorn/prevent-abbreviations": "off",
-      "unicorn/string-content": "off"
+      "unicorn/string-content": "off",
+      "unicorn/no-fn-reference-in-iterator": "off"
     },
     "overrides": [
       {
diff --git a/src/file.js b/src/file.js
index e1091b61..82d6f65b 100644
--- a/src/file.js
+++ b/src/file.js
@@ -135,7 +135,7 @@ async function fileExists(href, options = {}) {
       const {statusCode} = response;
 
       if (request.method === 'head') {
-        return parseInt(statusCode, 10) < 400;
+        return Number.parseInt(statusCode, 10) < 400;
       }
 
       return Boolean(response);