[TEST] add travis config

Author: bradzacher

.travis.yml

@@ -0,0 +1,10 @@
+dist: trusty
+language: node_js
+node_js:
+  - '10'
+  - '8'
+  - '6'
+install: npm i
+script:
+  - npm run check-format
+  - npm run test

package.json

@@ -32,9 +32,12 @@
     "dummy.js": "file:dummy.js",
     "eslint": "^5.6.1",
     "eslint-plugin-import": "^2.14.0",
+    "prettier": "^1.14.3",
     "typescript": "^3.1.1"
   },
   "scripts": {
-    "test": "eslint ./tests/withPaths/index.ts && eslint ./tests/withoutPaths/index.ts"
+    "test": "eslint ./tests/withPaths/index.ts && eslint ./tests/withoutPaths/index.ts",
+    "check-format": "prettier --config prettier.config.js index.js -l",
+    "format": "prettier --config prettier.config.js index.js --write"
   }
 }

prettier.config.js

@@ -1,5 +1,14 @@
+'use strict';
+
 module.exports = {
-  parser: 'typescript',
+  arrowParens: 'avoid',
+  bracketSpacing: true,
+  parser: 'babylon',
+  jsxBracketSameLine: true,
+  proseWrap: 'preserve',
+  semi: true,
   singleQuote: true,
+  tabWidth: 2,
   trailingComma: 'all',
+  useTabs: false,
 };