move eslint config out of package.json and add prettier

Author: developit

.eslintrc

@@ -0,0 +1,52 @@
+{
+  "ignorePatterns": [
+    "node_modules",
+    "dist",
+    "index.d.ts"
+  ],
+  "extends": [
+    "plugin:@typescript-eslint/eslint-recommended",
+    "plugin:@typescript-eslint/recommended",
+    "developit"
+  ],
+  "parser": "@typescript-eslint/parser",
+  "parserOptions": {
+    "sourceType": "module"
+  },
+  "env": {
+    "browser": true,
+    "mocha": true,
+    "jest": false,
+    "es6": true
+  },
+  "globals": {
+    "expect": true
+  },
+  "rules": {
+    "semi": [
+      2,
+      "always"
+    ],
+    "brace-style": [
+      2,
+      "1tbs"
+    ],
+    "quotes": [
+      2,
+      "single"
+    ],
+    "lines-around-comment": [
+      2,
+      {
+        "allowBlockStart": true,
+        "allowObjectStart": true
+      }
+    ],
+    "jest/valid-expect": 0,
+    "@typescript-eslint/no-explicit-any": 0,
+    "@typescript-eslint/explicit-function-return-type": 0,
+    "@typescript-eslint/explicit-module-boundary-types": 0,
+    "@typescript-eslint/no-empty-function": 0,
+    "@typescript-eslint/no-non-null-assertion": 0
+  }
+}

package.json

@@ -54,57 +54,27 @@
       "test/*_test.ts"
     ]
   },
-  "eslintConfig": {
-    "extends": [
-      "developit",
-      "plugin:@typescript-eslint/eslint-recommended",
-      "plugin:@typescript-eslint/recommended"
-    ],
-    "parser": "@typescript-eslint/parser",
-    "parserOptions": {
-      "sourceType": "module"
-    },
-    "env": {
-      "browser": true,
-      "mocha": true,
-      "jest": false,
-      "es6": true
+  "prettier": {
+    "singleQuote": true,
+    "trailingComma": "none"
     },
-    "globals": {
-      "expect": true
-    },
-    "rules": {
-      "semi": [
-        2,
-        "always"
-      ],
-      "jest/valid-expect": 0,
-      "@typescript-eslint/no-explicit-any": 0,
-      "@typescript-eslint/explicit-function-return-type": 0,
-      "@typescript-eslint/explicit-module-boundary-types": 0,
-      "@typescript-eslint/no-empty-function": 0,
-      "@typescript-eslint/no-non-null-assertion": 0
-    }
-  },
-  "eslintIgnore": [
-    "dist",
-    "index.d.ts"
-  ],
   "devDependencies": {
     "@types/chai": "^4.2.11",
     "@types/mocha": "^7.0.2",
     "@types/sinon": "^9.0.4",
     "@types/sinon-chai": "^3.2.4",
-    "@typescript-eslint/eslint-plugin": "^3.0.1",
-    "@typescript-eslint/parser": "^3.0.1",
+    "@typescript-eslint/eslint-plugin": "^5.61.0",
+    "@typescript-eslint/parser": "^5.61.0",
     "chai": "^4.2.0",
     "documentation": "^14.0.2",
-    "eslint": "^7.1.0",
+    "eslint": "^7.32.0",
     "eslint-config-developit": "^1.2.0",
+    "eslint-plugin-compat": "^4.1.4",
     "esm": "^3.2.25",
     "microbundle": "^0.12.3",
     "mocha": "^8.0.1",
     "npm-run-all": "^4.1.5",
+    "prettier": "^2.8.8",
     "rimraf": "^3.0.2",
     "sinon": "^9.0.2",
     "sinon-chai": "^3.5.0",