added eslint and prettier

Author: DavidChen-minted

.eslintrc.js

@@ -0,0 +1,75 @@
+module.exports =  {
+  parser:  '@typescript-eslint/parser',  // Specifies the ESLint parser
+  extends:  [
+    'plugin:react/recommended',  // Uses the recommended rules from @eslint-plugin-react
+    'plugin:@typescript-eslint/recommended',  // Uses the recommended rules from @typescript-eslint/eslint-plugin
+    'airbnb',  //Uses airbnb recommended rules
+    'prettier/@typescript-eslint',  // Uses eslint-config-prettier to disable ESLint rules from @typescript-eslint/eslint-plugin that would conflict with prettier
+    'plugin:prettier/recommended',  // Enables eslint-plugin-prettier and displays prettier errors as ESLint errors. Make sure this is always the last configuration in the extends array.
+  ],
+  parserOptions:  {
+    ecmaVersion:  2018,  // Allows for the parsing of modern ECMAScript features
+    sourceType:  'module',  // Allows for the use of imports
+    ecmaFeatures:  {
+      jsx:  true,  // Allows for the parsing of JSX
+    },
+  },
+  env: {
+    browser: true,
+    node: true,
+    jest: true
+  },
+  rules:  {
+    // Place to specify ESLint rules. Can be used to overwrite rules specified from the extended configs
+    // e.g. '@typescript-eslint/explicit-function-return-type': 'off',
+    'no-unused-vars': 'off',
+    '@typescript-eslint/no-unused-vars': ['error', {
+      'vars': 'all',
+      'args': 'after-used',
+      'ignoreRestSiblings': false
+    }],
+    'react/jsx-filename-extension': [1, { 'extensions': ['.js', '.jsx', '.ts', '.tsx'] }],
+    '@typescript-eslint/no-explicit-any': 'off',
+    '@typescript-eslint/explicit-function-return-type': 0,
+    '@typescript-eslint/no-object-literal-type-assertion': ['error', {'allowAsParameter': true}],
+    'jsx-a11y/anchor-is-valid': [ 'error', {
+      'components': [ 'Link' ],
+      'specialLink': [ 'hrefLeft', 'hrefRight' ],
+      'aspects': [ 'invalidHref', 'preferButton' ]
+    }],    
+    'react/prop-types': 'off',
+    'import/no-extraneous-dependencies': [
+      'error',
+      {
+        'devDependencies': true
+      }
+    ],
+    'comma-dangle': [
+      'error',
+      {
+        'arrays': 'always-multiline',
+        'objects': 'always-multiline',
+        'imports': 'always-multiline',
+        'exports': 'always-multiline',
+        'functions': 'never'
+      }
+    ],
+    'react-hooks/rules-of-hooks': 'error',
+    'react-hooks/exhaustive-deps': 'off',
+    'no-bitwise': 'off'
+  },
+  plugins: [
+    '@typescript-eslint/eslint-plugin',
+    'react-hooks'
+  ],
+  settings:  {
+    'import/resolver': {
+      node: {
+        extensions: ['.js', '.jsx', '.ts', '.tsx']
+      }
+    },
+    react:  {
+      version:  'detect',  // Tells eslint-plugin-react to automatically detect the version of React to use
+    },
+  },
+};

.prettierrc.js

@@ -0,0 +1,7 @@
+module.exports =  {
+  semi:  true,
+  trailingComma:  'es5',
+  singleQuote:  true,
+  printWidth:  100,
+  tabWidth:  2,
+};