set a more prescriptive eslint for better consistency (#187)

* set a more prescriptive eslint for better consistency

* update eslint to better reflect project needs

* update code according to new ESLint rules

* lint file

.eslintrc.js

@@ -0,0 +1,39 @@
+module.exports = {
+    parser: '@typescript-eslint/parser',
+    parserOptions: {
+        project: './tsconfig/*.json',
+        sourceType: 'node',
+        ecmaVersion: 2020,
+    },
+    plugins: ['@typescript-eslint/eslint-plugin'],
+    extends: [
+        'eslint:recommended',
+        'plugin:@typescript-eslint/recommended',
+        'plugin:import/recommended',
+        'plugin:import/typescript',
+        'plugin:prettier/recommended',
+        'prettier',
+    ],
+    root: true,
+    env: {
+        node: true,
+        jest: true,
+    },
+    rules: {
+        '@typescript-eslint/interface-name-prefix': 'off',
+        '@typescript-eslint/explicit-function-return-type': 'off',
+        '@typescript-eslint/explicit-module-boundary-types': 'off',
+        '@typescript-eslint/no-empty-function': ['error', { allow: ['arrowFunctions', 'constructors'] }],
+        '@typescript-eslint/no-explicit-any': 'off',
+        '@typescript-eslint/no-unused-vars': ['error', { argsIgnorePattern: '^_' }],
+        'import/order': [
+            'error',
+            {
+                alphabetize: {
+                    order: 'asc',
+                    caseInsensitive: true,
+                },
+            },
+        ],
+    },
+};

.prettierrc

@@ -0,0 +1,7 @@
+{
+  "parser": "typescript",
+  "printWidth": 120,
+  "singleQuote": true,
+  "tabWidth": 4,
+  "trailingComma": "all"
+}