feat: Adds eslint configs and deps (#290)

.eslintrc.js

@@ -0,0 +1,77 @@
+module.exports = {
+  env: {
+    browser: true,
+    es2020: true,
+    node: true,
+  },
+  extends: ['airbnb-base', 'plugin:react/recommended', 'plugin:prettier/recommended'],
+  parserOptions: {
+    ecmaFeatures: {
+      jsx: true,
+    },
+    ecmaVersion: 11,
+    sourceType: 'module',
+  },
+  plugins: ['react', 'prettier'],
+  rules: {
+    'react/prop-types': 'off', // Disable prop-types rule as this is used selectively in this repo
+    'no-console': 'warn', // Warn on console statements
+    'react/react-in-jsx-scope': 'off', // React 17 specific jsx-runtime enabled, so React import is not required
+    'prettier/prettier': 'error', // Add Prettier errors as ESLint errors
+    'arrow-parens': ['error', 'as-needed'],
+    'import/no-named-as-default': 0,
+    'import/prefer-default-export': 0,
+    quotes: ['error', 'single', { avoidEscape: true, allowTemplateLiterals: true }],
+    'comma-dangle': 0,
+    'object-curly-newline': 'off', // This rule is better handled by prettier
+    eqeqeq: [1, 'allow-null'],
+    'no-continue': 0,
+    'no-cond-assign': 1,
+    'no-constant-condition': 0,
+    'no-control-regex': 1,
+    'no-debugger': 1,
+    'no-dupe-keys': 1,
+    'no-ex-assign': 1,
+    'no-extra-boolean-cast': 1,
+    'no-func-assign': 1,
+    'no-regex-spaces': 1,
+    'no-unreachable': 1,
+    'no-fallthrough': 1,
+    'no-lone-blocks': 1,
+    'no-delete-var': 1,
+    'no-shadow': 'warn',
+    'no-shadow-restricted-names': 1,
+    'no-undef': 2,
+    'no-undef-init': 1,
+    'no-use-before-define': 0,
+    'no-unused-vars': [
+      'warn',
+      {
+        vars: 'all',
+        args: 'after-used',
+        varsIgnorePattern: '^_', // Allow variables starting with _ to be unused
+      },
+    ],
+    'no-underscore-dangle': 0,
+    'no-restricted-syntax': ['error', 'LabeledStatement', 'WithStatement'],
+    'no-await-in-loop': 'off',
+    'no-plusplus': 'off',
+    'guard-for-in': 'off',
+    'no-bitwise': 'off',
+    'import/extensions': [
+      'error',
+      'ignorePackages',
+      {
+        js: 'never',
+      },
+    ],
+    'jest/no-disabled-tests': 'off', // It's useful to have skipped tests on our suites
+
+    camelcase: 'off', // Conflicts with variables obtained directly from the fullnode endpoints
+  },
+  settings: {
+    react: {
+      version: 'detect',
+    },
+  },
+};

.prettierrc

@@ -0,0 +1,10 @@
+{
+  "printWidth": 100,
+  "tabWidth": 2,
+  "useTabs": false,
+  "semi": true,
+  "singleQuote": true,
+  "trailingComma": "es5",
+  "bracketSpacing": true,
+  "arrowParens": "avoid"
+}