Test for node 4 compatibility

Author: simonihmig

.babelrc

@@ -0,0 +1,3 @@
+{
+  "presets": ["es2015"]
+}

.travis.yml

@@ -1,6 +1,8 @@
 language: node_js
 node_js:
+  - "4"
   - "6"
+  - "8"
 
 cache:
   yarn: true

README.md

@@ -13,9 +13,6 @@ So it is likely that you will have to manually migrate some usages this tool can
 
 ## Usage
 
-**This package requires Node 6 or later. Make sure you are using a newer version
-of Node before installing and running this package.**
-
 **WARNING**: `jscodeshift`, and thus this codemod, **edits your files in place**.
 It does not make a copy. Make sure your code is checked into a source control
 repository like Git and that you have no outstanding changes to commit before

bin/ember-test-helpers-codemod.js

@@ -1,4 +1,5 @@
 #!/usr/bin/env node
+'use strict';
 
 const execa = require("execa");
 const chalk = require("chalk");

lib/transforms/acceptance/tail-eq.js

@@ -12,7 +12,7 @@ const sizzleFunctions = [ 'find', 'click', 'fillIn' ];
 function isAnEqExpression(j, node) {
   return j.CallExpression.check(node)
     && j.Identifier.check(node.callee)
-    && sizzleFunctions.includes(node.callee.name)
+    && sizzleFunctions.indexOf(node.callee.name) !== -1
     && j.Literal.check(node.arguments[0])
     && typeof node.arguments[0].value === 'string'
     && /:eq\(\d+\)$/.test(node.arguments[0].value)

lib/transforms/integration/trigger-shortcut.js

@@ -27,7 +27,7 @@ function isJQueryExpression(j, path) {
     && j.MemberExpression.check(node.callee)
     && isJQuerySelectExpression(j, node.callee.object, path)
     && j.Identifier.check(node.callee.property)
-    && triggerShortcuts.includes(node.callee.property.name);
+    && triggerShortcuts.indexOf(node.callee.property.name) !== -1;
 }
 
 /**

package.json

@@ -18,5 +18,8 @@
   "devDependencies": {
     "jest": "^21.2.1",
     "temp": "^0.8.3"
+  },
+  "engines": {
+    "node": ">= 4"
   }
 }