Update: Polyfill Proxy on Node 4

.travis.yml

@@ -8,6 +8,7 @@ node_js:
   - '8'
   - '7'
   - '6'
+  - '4'
 before_script:
   - npm prune
 script:

README.md

@@ -47,7 +47,7 @@ describe('Example test suite', function () {
 
 `anticipated-call` intercepts function calls with [Proxy](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Proxy), and returns a [Promise](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Promise). To do this, the `Proxy` and `Promise` constructors must be available as globals.
 
-If you're running Node 8, these are included in core, so you don't have to do anything. Similarly, if you're using `babel-polyfill` or similar, this is handled for you.
+The `Promise` constructor is assumed to be available, since it was implemented in Node 4. If `Proxy` is not available, it will be polyfilled.
 
 ## API
 

package.json

@@ -10,7 +10,9 @@
     "test": "jest",
     "semantic-release": "semantic-release pre && npm publish && semantic-release post"
   },
-  "files": ["lib"],
+  "files": [
+    "lib"
+  ],
   "author": "Ryan Kennedy <[email protected]>",
   "license": "MIT",
   "release": {
@@ -34,5 +36,8 @@
     "eslint-config-react-app": "^2.0.1",
     "jest": "^21.2.1",
     "semantic-release": "^8.0.3"
+  },
+  "dependencies": {
+    "harmony-reflect": "^1.5.1"
   }
 }

src/index.js

@@ -1,5 +1,9 @@
 const EventEmitter = require('events');
 
+if (typeof Proxy === 'undefined') {
+  require('harmony-reflect');
+}
+
 class Anticipated extends EventEmitter {
   nthNextCall(n) {
     let counter = 0;