prettier and ignore yarn

.gitignore

@@ -1,6 +1,7 @@
 node_modules/
 package-lock.json
 .idea
+yarn.lock
 
 config.yml
 bin

.prettierrc

@@ -0,0 +1,3 @@
+semi: false
+singleQuote: true
+trailingComma: 'es5'

package.json

@@ -10,6 +10,7 @@
 		"@types/decompress": "^4.2.3",
 		"@types/js-yaml": "^3.12.1",
 		"@types/minimist": "^1.2.0",
+		"@types/node": "^12.11.7",
 		"pkg": "^4.4.0",
 		"ts-node-dev": "^1.0.0-pre.40",
 		"typescript": "^3.5.1"