Add filter for source is es5

demo/person.js

@@ -0,0 +1,20 @@
+/* no transpile, this is  */
+(function(global){
+  "use strict";
+  var Person = function(name, age){
+    this.name = name;
+    this.age = age;
+  };
+  Person.prototype.getAge = function() {
+    return this.age;
+  };
+  Person.prototype.greet = function() {
+    return "Hello! I am " + this.name + ". My age is " + this.age;
+  }
+  if (module && module.exports) {
+    module.exports = Person;
+  } else {
+    global.Person = Person;
+  }
+}(typeof global !== 'undefined' ? global : this));
+

index.js

@@ -32,7 +32,10 @@ function espowerTraceur (options) {
   };
   traceur.require.makeDefault(function (filename) {
     // Don't compile our dependencies.
-    return filename.indexOf('node_modules') === -1;
+    if (filename.indexOf('node_modules') !== -1) return false;
+    // Don't compile files not included our test dirs.
+    if (!minimatch(filename, pattern)) return false;
+    return true;
   });
 }
 

test/person_test.js

@@ -0,0 +1,15 @@
+let assert = require("power-assert")
+let Person = require("../demo/person")
+
+describe("Person", ()=>{
+  let name = "Alice"
+  let age = 4
+  let alice = new Person(name, age)
+  it("alice get age", ()=>{
+    assert.equal(alice.getAge(), age)
+  })
+  it("alice greet", ()=>{
+    assert.equal(alice.greet(), `Hello! I am ${name}. My age is ${age}`)
+  })
+})
+