Add eslint and prettier

Author: philip-gai

.eslintignore

@@ -0,0 +1,4 @@
+dist/
+lib/
+node_modules/
+jest.config.js

.eslintrc.json

@@ -0,0 +1,12 @@
+{
+    "root": true,
+    "parser": "@typescript-eslint/parser",
+    "plugins": ["@typescript-eslint", "jest"],
+    "extends": ["eslint:recommended", "plugin:@typescript-eslint/recommended", "prettier"],
+    "env": {
+      "node": true,
+      "es6": true,
+      "jest/globals": true
+    }
+  }
+  

.prettierignore

@@ -0,0 +1,3 @@
+dist/
+lib/
+node_modules/

.prettierrc

@@ -0,0 +1,6 @@
+{
+  "semi": true,
+  "trailingComma": "none",
+  "singleQuote": true,
+  "printWidth": 160
+}

.vscode/extensions.json

@@ -0,0 +1,5 @@
+{
+    "recommendations": [
+        "esbenp.prettier-vscode"
+    ]
+}

.vscode/settings.json

@@ -1,4 +1,6 @@
 {
     "editor.formatOnSave": true,
-    "appService.defaultWebAppToDeploy": "/subscriptions/98d42051-32a1-4593-8ca5-7d37b8b41880/resourceGroups/repost/providers/Microsoft.Web/sites/repost-web",
+    "[typescript]": {
+        "editor.defaultFormatter": "esbenp.prettier-vscode"
+    }
 }