SETUP FOR TYPESCRIPT

.eslintrc

@@ -6,7 +6,7 @@
       "jsx": true
     }
   },
-  "extends": ["eslint:recommended"],
+  "extends": ["eslint:recommended", "eslint-config-prettier"],
   "rules": {
     "strict": ["error", "never"]
   },

package-lock.json

@@ -1503,6 +1503,15 @@
         }
       }
     },
+    "eslint-config-prettier": {
+      "version": "6.5.0",
+      "resolved": "https://registry.npmjs.org/eslint-config-prettier/-/eslint-config-prettier-6.5.0.tgz",
+      "integrity": "sha512-cjXp8SbO9VFGW/Z7mbTydqS9to8Z58E5aYhj3e1+Hx7lS9s6gL5ILKNpCqZAFOVYRcSkWPFYljHrEh8QFEK5EQ==",
+      "dev": true,
+      "requires": {
+        "get-stdin": "^6.0.0"
+      }
+    },
     "eslint-scope": {
       "version": "5.0.0",
       "resolved": "https://registry.npmjs.org/eslint-scope/-/eslint-scope-5.0.0.tgz",
@@ -2385,6 +2394,12 @@
       "integrity": "sha1-GwqzvVU7Kg1jmdKcDj6gslIHgyc=",
       "dev": true
     },
+    "get-stdin": {
+      "version": "6.0.0",
+      "resolved": "https://registry.npmjs.org/get-stdin/-/get-stdin-6.0.0.tgz",
+      "integrity": "sha512-jp4tHawyV7+fkkSKyvjuLZswblUtz+SQKzSWnBbii16BuZksJlU1wuBYXY75r+duh/llF1ur6oNwi+2ZzjKZ7g==",
+      "dev": true
+    },
     "get-value": {
       "version": "2.0.6",
       "resolved": "https://registry.npmjs.org/get-value/-/get-value-2.0.6.tgz",

package.json

@@ -6,13 +6,17 @@
   "scripts": {
     "build": "babel src --out-dir dist",
     "lint": "eslint --ignore-path .gitignore .",
-    "format": "prettier --ignore-path .gitignore --write \"**/*.+(js|json)\""
+    "prettier": "prettier --ignore-path .gitignore \"**/*.+(js|json)\"",
+    "format": "npm run prettier -- --write",
+    "check-format": "npm run prettier -- --list-different",
+    "validate": "npm run check-format && npm run lint && npm run build"
   },
   "devDependencies": {
     "@babel/cli": "^7.7.0",
     "@babel/core": "^7.7.2",
     "@babel/preset-env": "^7.7.1",
     "eslint": "^6.6.0",
+    "eslint-config-prettier": "^6.5.0",
     "prettier": "^1.19.1"
   }
 }

src/typescript-example.js

@@ -0,0 +1,14 @@
+function add(a, b) {
+  return a + b
+}
+
+function getFullName(user) {
+  const {
+    name: {first, middle, last},
+  } = user
+  return [first, middle, last].filter(Boolean).join('')
+}
+
+add(1, 'two')
+
+getFullName({name: {first: 'Joe', midd1e: 'Bud', last: 'Matthews'}})