Fix minify (#21)

* restoring minify (reverted from commit e65ff24)

* reveal problem by using dist for tests

* use good syntax in the minify command

* build before test
fixes issue with node 6

.travis.yml

@@ -14,6 +14,7 @@ install:
   - npm i
 
 script:
+  - npm run build
   - npm test
   - codecov
 

package.json

@@ -17,12 +17,15 @@
     "hyperapp": "^1.1.2",
     "jest": "^21.2.1",
     "prettier": "^1.8.2",
-    "rollup": "^0.55.5"
+    "rollup": "^0.55.5",
+    "uglify-js": "^3.2.1"
   },
   "scripts": {
     "test": "jest --coverage --no-cache",
-    "bundle": "rollup -i src/index.js -o dist/effects.js -f umd -n effects",
-    "prepare": "npm run bundle",
+    "build": "npm run bundle && npm run minify",
+    "bundle": "rollup -i src/index.js -o dist/effects.js -m -f umd -n effects",
+    "minify": "uglifyjs dist/effects.js -o dist/effects.js -mc pure_funcs=['Object.defineProperty'] --source-map includeSources,url=effects.js.map",
+    "prepare": "npm run build",
     "format": "prettier --semi false --write '{src,test}/**/*.js'"
   },
   "babel": {

src/utils.js

@@ -8,8 +8,10 @@ export function assign(source, assignments) {
 export function omit(object, keys) {
   var copy = {}
   Object.keys(object)
-    .filter(key => keys.indexOf(key) === -1)
-    .forEach(key => {
+    .filter(function(key) {
+      return keys.indexOf(key) === -1
+    })
+    .forEach(function(key) {
       copy[key] = object[key]
     })
   return copy

test/effectsIf.test.js

@@ -1,4 +1,4 @@
-import { action, effectsIf } from "../src"
+import { action, effectsIf } from "../dist/effects"
 
 describe("effectsIf", () => {
   it("should filter out effects with truthy conditionals", () =>

test/withEffects.test.js

@@ -11,7 +11,7 @@ import {
   keydown,
   keyup,
   random
-} from "../src"
+} from "../dist/effects"
 
 describe("withEffects", () => {
   it("should be a function", () => expect(withEffects).toBeInstanceOf(Function))