Add eslint

.eslintrc.yml

@@ -0,0 +1,15 @@
+env:
+  mocha: true
+extends: standard
+plugins:
+  - standard
+  - promise
+rules:
+  arrow-parens: 0
+  eqeqeq: 0
+  no-return-assign: 0 # fails for arrow functions
+  semi: [2, always]
+  space-before-function-paren: [2, never]
+  yoda: 0
+  arrow-spacing: 2
+  dot-location: [2, "property"]

.travis.yml

@@ -2,3 +2,5 @@ node_js:
   - "4"
   - "6"
 language: node_js
+script:
+  make lint

Makefile

@@ -1,3 +1,6 @@
+lint:
+	@./node_modules/.bin/eslint .
+
 test:
 	@NODE_ENV=test ./node_modules/.bin/mocha \
 		--harmony \
@@ -5,4 +8,4 @@ test:
 		--require should \
 		*/test.js
 
-.PHONY: test
+.PHONY: lint test

Readme.md

@@ -2,6 +2,13 @@
 
   A repository containing small examples to illustrate the use of Koa
   for creating web applications and other HTTP servers.
+  
+# Running tests
+
+```bash
+make test
+make lint
+```
 
 ## Included Examples
 

package.json

@@ -26,6 +26,10 @@
   },
   "devDependencies": {
     "co": "*",
+    "eslint": "^3.8.1",
+    "eslint-config-standard": "^6.2.0",
+    "eslint-plugin-promise": "^3.3.0",
+    "eslint-plugin-standard": "^2.0.1",
     "mocha": "*",
     "should": "^3.3.2",
     "supertest": "*"