Add eslint and prettier

Author: aurelien-reeves

.eslintrc.json

@@ -0,0 +1,41 @@
+{
+  "env": {
+    "node": true
+  },
+  "parser": "@typescript-eslint/parser",
+  "parserOptions": {
+    "sourceType": "module"
+  },
+  "plugins": ["import", "simple-import-sort", "node", "@typescript-eslint"],
+  "extends": [
+    "eslint:recommended",
+    "plugin:import/typescript",
+    "plugin:@typescript-eslint/eslint-recommended",
+    "plugin:@typescript-eslint/recommended",
+    "plugin:prettier/recommended",
+    "prettier"
+  ],
+  "rules": {
+    "import/no-cycle": "error",
+    "node/no-extraneous-import": "error",
+    "@typescript-eslint/ban-ts-ignore": "off",
+    "@typescript-eslint/ban-ts-comment": "off",
+    "@typescript-eslint/explicit-module-boundary-types": "off",
+    "@typescript-eslint/explicit-function-return-type": "off",
+    "@typescript-eslint/no-use-before-define": "off",
+    "@typescript-eslint/interface-name-prefix": "off",
+    "@typescript-eslint/member-delimiter-style": "off",
+    "@typescript-eslint/no-explicit-any": "error",
+    "@typescript-eslint/no-non-null-assertion": "error",
+    "simple-import-sort/imports": "error",
+    "simple-import-sort/exports": "error"
+  },
+  "overrides": [
+    {
+      "files": ["test/**"],
+      "rules": {
+        "@typescript-eslint/no-non-null-assertion": "off"
+      }
+    }
+  ]
+}

.gitignore

@@ -4,7 +4,6 @@ dist/
 coverage/
 node_modules/
 yarn.lock
-package-lock.json
 *.log
 .deps
 .tested*

.prettierrc.json

@@ -0,0 +1,5 @@
+{
+	"trailingComma": "es5",
+	"singleQuote": true,
+	"semi": false
+}