Ensure ember-data/-private module is emitted properly for ember-cli…

… < 2.12. (#5031)

ember-cli@2.12 and higher have the addon itself responsible for transpiling
modules so that the output of the `treeForAddon` hook is expected to be
AMD.

Prior versions of ember-cli (i.e. < 2.12) do second pass (that is not possible
to disable) to transpile the output of `treeForAddon` **again** (to transpile
modules).

This commit changes things around leveraging ember-cli-babel@6's built in
ability to detect the various ember-cli version scenarios and either
transpile `ember-data/-private` down to AMD or not correctly.

index.js

@@ -9,6 +9,7 @@ const Babel = require('broccoli-babel-transpiler');
 const merge = require('broccoli-merge-trees');
 const semver = require('semver');
 const version = require('./lib/version');
+const BroccoliDebug = require('broccoli-debug');
 
 // allow toggling of heimdall instrumentation
 let INSTRUMENT_HEIMDALL = false;
@@ -52,6 +53,8 @@ module.exports = {
   init() {
     this._super.init && this._super.init.apply(this, arguments);
 
+    this.debugTree = BroccoliDebug.buildDebugCallback('ember-data');
+
     let bowerDeps = this.project.bowerDependencies();
 
     let VersionChecker = require('ember-cli-version-checker');
@@ -113,6 +116,8 @@ module.exports = {
   treeForAddon(tree) {
     if (this._forceBowerUsage) { return NOOP_TREE(tree); }
 
+    tree = this.debugTree(tree, 'input');
+
     let babel = this.addons.find(addon => addon.name === 'ember-cli-babel');
 
     let treeWithVersion = merge([
@@ -130,21 +135,25 @@ module.exports = {
       destDir: 'ember-data'
     });
 
-    let privateTree = babel.transpileTree(withPrivate, {
+    let privateTree = babel.transpileTree(this.debugTree(withPrivate, 'babel-private:input'), {
       babel: this.buildBabelOptions(),
       'ember-cli-babel': {
         compileModules: false
       }
     });
 
+    privateTree = this.debugTree(privateTree, 'babel-private:output');
+
     // use the default options
-    let publicTree = babel.transpileTree(withoutPrivate);
+    let publicTree = babel.transpileTree(this.debugTree(withoutPrivate, 'babel-public:input'));
+
+    publicTree = this.debugTree(publicTree, 'babel-public:output');
 
     privateTree = new Rollup(privateTree, {
       rollup: {
         entry: '-private/index.js',
         targets: [
-          { dest: '-private.js', format: 'amd', moduleId: 'ember-data/-private' }
+          { dest: 'ember-data/-private.js', format: babel.shouldCompileModules() ? 'amd' : 'es', moduleId: 'ember-data/-private' }
         ],
         external: [
           'ember',
@@ -157,14 +166,16 @@ module.exports = {
       }
     });
 
+    privateTree = this.debugTree(privateTree, 'rollup-output');
+
     // the output of treeForAddon is required to be modules/<your files>
     publicTree  = new Funnel(publicTree,  { destDir: 'modules' });
     privateTree = new Funnel(privateTree, { destDir: 'modules' });
 
-    return merge([
+    return this.debugTree(merge([
       publicTree,
       privateTree
-    ]);
+    ]), 'final');
   },
 
   buildBabelOptions() {
@@ -204,3 +215,4 @@ module.exports = {
     }
   }
 };
+

package.json

@@ -26,12 +26,13 @@
     "babel6-plugin-strip-class-callcheck": "^6.0.0",
     "babel6-plugin-strip-heimdall": "^6.0.1",
     "broccoli-babel-transpiler": "^6.0.0",
+    "broccoli-debug": "^0.6.2",
     "broccoli-file-creator": "^1.0.0",
     "broccoli-funnel": "^1.2.0",
     "broccoli-merge-trees": "^1.0.0",
     "broccoli-rollup": "^1.2.0",
     "chalk": "^1.1.1",
-    "ember-cli-babel": "^6.1.0",
+    "ember-cli-babel": "^6.4.1",
     "ember-cli-path-utils": "^1.0.0",
     "ember-cli-string-utils": "^1.0.0",
     "ember-cli-test-info": "^1.0.0",