Avoid conflicting transforms for @ember/debug.

When both babel-plugin-debug-macros and babel-plugin-ember-modules-api-polyfill
attempt to replace `import { assert } from '@ember/assert';` the interaction
between the two also removes any helpers that are injected by other parts of
the transpilation (e.g. `_classCallCheck` or `_asyncToGenerator`) therefore
making the transpiled output fail at runtime.

This updates babel-plugin-ember-modules-api-polyfill to a version that allows
specifying a blacklist so that we can avoid this conflict.

index.js

@@ -260,7 +260,7 @@ module.exports = {
     if (this._emberVersionRequiresModulesAPIPolyfill()) {
       const ModulesAPIPolyfill = require('babel-plugin-ember-modules-api-polyfill');
 
-      return [[ModulesAPIPolyfill]];
+      return [[ModulesAPIPolyfill, { blacklist: ['@ember/debug'] }]];
     }
   },
 

node-tests/addon-test.js

@@ -110,6 +110,24 @@ describe('ember-cli-babel', function() {
           "foo.js": `define('foo', [], function () {\n  'use strict';\n\n  var Component = Ember.Component;\n});`
         });
       }));
+
+      it("does not remove _asyncToGenerator helper function when used together with debug-macros", co.wrap(function* () {
+        input.write({
+          "foo.js": stripIndent`
+            import { assert } from '@ember/debug';
+            export default { async foo() { await this.baz; }}
+          `
+        });
+
+        subject = this.addon.transpileTree(input.path());
+        output = createBuilder(subject);
+
+        yield output.build();
+
+        let contents = output.read()['foo.js'];
+
+        expect(contents).to.include('function _asyncToGenerator');
+      }));
     });
 
     describe('debug macros', function() {

package.json

@@ -37,7 +37,7 @@
   "dependencies": {
     "amd-name-resolver": "0.0.6",
     "babel-plugin-debug-macros": "^0.1.10",
-    "babel-plugin-ember-modules-api-polyfill": "^1.2.0",
+    "babel-plugin-ember-modules-api-polyfill": "^1.3.0",
     "babel-plugin-transform-es2015-modules-amd": "^6.24.0",
     "babel-polyfill": "^6.16.0",
     "babel-preset-env": "^1.5.1",

yarn.lock

@@ -438,9 +438,9 @@ babel-plugin-debug-macros@^0.1.1, babel-plugin-debug-macros@^0.1.10, babel-plugi
   dependencies:
     semver "^5.3.0"
 
-babel-plugin-ember-modules-api-polyfill@^1.2.0:
-  version "1.2.0"
-  resolved "https://registry.yarnpkg.com/babel-plugin-ember-modules-api-polyfill/-/babel-plugin-ember-modules-api-polyfill-1.2.0.tgz#f99f26040d4d29ae42fdc333553198940d59cf46"
+babel-plugin-ember-modules-api-polyfill@^1.3.0:
+  version "1.3.0"
+  resolved "https://registry.yarnpkg.com/babel-plugin-ember-modules-api-polyfill/-/babel-plugin-ember-modules-api-polyfill-1.3.0.tgz#0b32e3dfdee47f26942968f49d2d67ba85346ae3"
   dependencies:
     ember-rfc176-data "^0.1.0"