added eslint

Author: foxriver76

.eslintrc.js

@@ -0,0 +1,91 @@
+module.exports = {
+    root: true, // Don't look outside this project for inherited configs
+    parser: '@typescript-eslint/parser', // Specifies the ESLint parser
+    parserOptions: {
+        ecmaVersion: 2018, // Allows for the parsing of modern ECMAScript features
+        sourceType: 'module', // Allows for the use of imports
+        project: './tsconfig.json'
+    },
+    extends: [
+        'plugin:@typescript-eslint/recommended', // Uses the recommended rules from the @typescript-eslint/eslint-plugin
+        'plugin:prettier/recommended'
+    ],
+    plugins: [],
+    rules: {
+        indent: 'off',
+        quotes: [
+            'error',
+            'single',
+            {
+                avoidEscape: true,
+                allowTemplateLiterals: true
+            }
+        ],
+        '@typescript-eslint/no-parameter-properties': 'off',
+        '@typescript-eslint/no-explicit-any': 'off',
+        '@typescript-eslint/no-use-before-define': [
+            'error',
+            {
+                functions: false,
+                typedefs: false,
+                classes: false
+            }
+        ],
+        '@typescript-eslint/no-unused-vars': [
+            'error',
+            {
+                ignoreRestSiblings: true,
+                argsIgnorePattern: '^_'
+            }
+        ],
+        '@typescript-eslint/explicit-function-return-type': [
+            'warn',
+            {
+                allowExpressions: true,
+                allowTypedFunctionExpressions: true
+            }
+        ],
+        '@typescript-eslint/no-object-literal-type-assertion': 'off',
+        '@typescript-eslint/interface-name-prefix': 'off',
+        '@typescript-eslint/no-non-null-assertion': 'off', // This is necessary for Map.has()/get()!
+        'no-var': 'error',
+        'prefer-const': 'error',
+        'no-trailing-spaces': 'error',
+        curly: 'error',
+        'brace-style': 'error',
+        'arrow-parens': ['error', 'as-needed'],
+        'no-console': 'off',
+        'no-unused-vars': ['error', { argsIgnorePattern: '^_', caughtErrors: 'all' }],
+        'no-useless-escape': 'warn',
+        'no-constant-condition': 'off',
+        'no-multiple-empty-lines': ['error', { max: 1, maxEOF: 1 }],
+        'no-throw-literal': 'error',
+        'prefer-promise-reject-errors': 'error',
+        //"require-await": "error",
+        'no-return-await': 'error',
+        eqeqeq: ['error', 'always'],
+        semi: ['error', 'always'],
+        'comma-dangle': [
+            'error',
+            {
+                arrays: 'never',
+                objects: 'never',
+                imports: 'never',
+                exports: 'never',
+                functions: 'ignore'
+            }
+        ]
+    },
+    overrides: [
+        {
+            files: ['*.test.ts'],
+            rules: {
+                '@typescript-eslint/explicit-function-return-type': 'off'
+            }
+        },
+        {
+            files: ['**/*.js'],
+            parser: 'espree'
+        }
+    ]
+};

.prettierrc.json

@@ -0,0 +1,12 @@
+{
+  "printWidth": 120,
+  "semi": true,
+  "tabWidth": 4,
+  "useTabs": false,
+  "trailingComma": "none",
+  "singleQuote": true,
+  "endOfLine": "lf",
+  "bracketSpacing": true,
+  "arrowParens": "avoid",
+  "quoteProps": "as-needed"
+}