Make ESLint pass the current codebase

.eslintrc.js

@@ -1,9 +1,16 @@
 module.exports = {
     "env": {
         "es6": true,
-        "node": true
+        "node": true,
+        "jest": true
     },
-    "extends": "eslint:recommended",
+    "parserOptions": {
+        "ecmaVersion": 2018
+    },
+    "extends": [
+        "eslint:recommended",
+        "plugin:jest/recommended"
+    ],
     "rules": {
         "indent": [
             "error",

package-lock.json

@@ -445,6 +445,12 @@
         "@types/istanbul-lib-report": "*"
       }
     },
+    "@types/json-schema": {
+      "version": "7.0.3",
+      "resolved": "https://registry.npmjs.org/@types/json-schema/-/json-schema-7.0.3.tgz",
+      "integrity": "sha512-Il2DtDVRGDcqjDtE+rF8iqg1CArehSK84HZJCT7AMITlyXRBpuPhqGLDQMowraqqu1coEaimg4ZOqggt6L6L+A==",
+      "dev": true
+    },
     "@types/stack-utils": {
       "version": "1.0.1",
       "resolved": "https://registry.npmjs.org/@types/stack-utils/-/stack-utils-1.0.1.tgz",
@@ -466,6 +472,47 @@
       "integrity": "sha512-gCubfBUZ6KxzoibJ+SCUc/57Ms1jz5NjHe4+dI2krNmU5zCPAphyLJYyTOg06ueIyfj+SaCUqmzun7ImlxDcKg==",
       "dev": true
     },
+    "@typescript-eslint/experimental-utils": {
+      "version": "1.13.0",
+      "resolved": "https://registry.npmjs.org/@typescript-eslint/experimental-utils/-/experimental-utils-1.13.0.tgz",
+      "integrity": "sha512-zmpS6SyqG4ZF64ffaJ6uah6tWWWgZ8m+c54XXgwFtUv0jNz8aJAVx8chMCvnk7yl6xwn8d+d96+tWp7fXzTuDg==",
+      "dev": true,
+      "requires": {
+        "@types/json-schema": "^7.0.3",
+        "@typescript-eslint/typescript-estree": "1.13.0",
+        "eslint-scope": "^4.0.0"
+      },
+      "dependencies": {
+        "eslint-scope": {
+          "version": "4.0.3",
+          "resolved": "https://registry.npmjs.org/eslint-scope/-/eslint-scope-4.0.3.tgz",
+          "integrity": "sha512-p7VutNr1O/QrxysMo3E45FjYDTeXBy0iTltPFNSqKAIfjDSXC+4dj+qfyuD8bfAXrW/y6lW3O76VaYNPKfpKrg==",
+          "dev": true,
+          "requires": {
+            "esrecurse": "^4.1.0",
+            "estraverse": "^4.1.1"
+          }
+        }
+      }
+    },
+    "@typescript-eslint/typescript-estree": {
+      "version": "1.13.0",
+      "resolved": "https://registry.npmjs.org/@typescript-eslint/typescript-estree/-/typescript-estree-1.13.0.tgz",
+      "integrity": "sha512-b5rCmd2e6DCC6tCTN9GSUAuxdYwCM/k/2wdjHGrIRGPSJotWMCe/dGpi66u42bhuh8q3QBzqM4TMA1GUUCJvdw==",
+      "dev": true,
+      "requires": {
+        "lodash.unescape": "4.0.1",
+        "semver": "5.5.0"
+      },
+      "dependencies": {
+        "semver": {
+          "version": "5.5.0",
+          "resolved": "https://registry.npmjs.org/semver/-/semver-5.5.0.tgz",
+          "integrity": "sha512-4SJ3dm0WAwWy/NVeioZh5AntkdJoWKxHxcmyP622fOkgHa4z3R0TdBJICINyaSDE6uNwVc8gZr+ZinwZAH4xIA==",
+          "dev": true
+        }
+      }
+    },
     "abab": {
       "version": "2.0.2",
       "resolved": "https://registry.npmjs.org/abab/-/abab-2.0.2.tgz",
@@ -1392,6 +1439,15 @@
         "v8-compile-cache": "^2.0.3"
       }
     },
+    "eslint-plugin-jest": {
+      "version": "22.17.0",
+      "resolved": "https://registry.npmjs.org/eslint-plugin-jest/-/eslint-plugin-jest-22.17.0.tgz",
+      "integrity": "sha512-WT4DP4RoGBhIQjv+5D0FM20fAdAUstfYAf/mkufLNTojsfgzc5/IYW22cIg/Q4QBavAZsROQlqppiWDpFZDS8Q==",
+      "dev": true,
+      "requires": {
+        "@typescript-eslint/experimental-utils": "^1.13.0"
+      }
+    },
     "eslint-scope": {
       "version": "5.0.0",
       "resolved": "https://registry.npmjs.org/eslint-scope/-/eslint-scope-5.0.0.tgz",
@@ -3565,6 +3621,12 @@
       "integrity": "sha1-7dFMgk4sycHgsKG0K7UhBRakJDg=",
       "dev": true
     },
+    "lodash.unescape": {
+      "version": "4.0.1",
+      "resolved": "https://registry.npmjs.org/lodash.unescape/-/lodash.unescape-4.0.1.tgz",
+      "integrity": "sha1-vyJJiGzlFM2hEvrpIYzcBlIR/Jw=",
+      "dev": true
+    },
     "loose-envify": {
       "version": "1.4.0",
       "resolved": "https://registry.npmjs.org/loose-envify/-/loose-envify-1.4.0.tgz",

package.json

@@ -4,6 +4,7 @@
   "description": "Map+Ascii -> MapSCII! Console Map Viewer.",
   "main": "main.js",
   "scripts": {
+    "lint": "eslint src",
     "start": "node main",
     "test": "jest"
   },
@@ -45,6 +46,7 @@
   },
   "devDependencies": {
     "eslint": "^6.5.1",
+    "eslint-plugin-jest": "^22.17.0",
     "jest": "^24.9.0"
   }
 }

src/utils.spec.js

@@ -19,7 +19,7 @@ describe('utils', () => {
       function wrapper() {
         utils.hex2rgb('33');
       }
-      expect(wrapper).toThrowError('isn\'t a supported hex color');
+      expect(wrapper).toThrow('isn\'t a supported hex color');
     });
   });
 });