added ESlint, updated settings for prettier

Author: cbschuld

.eslintrc.js

@@ -0,0 +1,44 @@
+module.exports = {
+  env: {
+    browser: true,
+    es6: true,
+    jest: true,
+  },
+  extends: ['plugin:@typescript-eslint/recommended', 'airbnb', 'prettier'],
+  globals: {
+    Atomics: 'readonly',
+    SharedArrayBuffer: 'readonly',
+  },
+  parser: '@typescript-eslint/parser',
+  parserOptions: {
+    ecmaFeatures: {
+      jsx: true,
+      modules: true,
+    },
+    ecmaVersion: 2018,
+    sourceType: 'module',
+  },
+  plugins: ['prettier', '@typescript-eslint'],
+  settings: {
+    'import/parsers': {
+      '@typescript-eslint/parser': ['.ts', '.tsx'],
+    },
+    'import/resolver': {
+      typescript: {},
+    },
+  },
+  rules: {
+    'import/no-extraneous-dependencies': [2, { devDependencies: ['**/test.tsx', '**/test.ts'] }],
+    'import/extensions': 'off',
+    'import/prefer-default-export': 'off',
+    'jsx-a11y/label-has-associated-control': [
+      2,
+      {
+        labelComponents: [],
+        labelAttributes: ['label'],
+        controlComponents: ['Input'],
+        depth: 3,
+      },
+    ],
+  },
+};

.prettierrc

@@ -1,5 +1,6 @@
 {
   "printWidth": 120,
   "trailingComma": "all",
-  "singleQuote": false
+  "tabWidth": 2,
+  "singleQuote": true
 }