Fix compatibility with ember-auto-import.

[email protected] accidentally broke compatibility with
ember-auto-import when it fixed `buildBabelOptions` to only return
custom babel config **not** broccoli-babel-transpiler config.

This fixes that compatiblity in the case where
`babelAddon.buildBabelOptions()` is called, but still preserves the
ability to get _either_ the broccoli-babel-transpiler config _or_ the
`@babel/core` config.

README.md

@@ -380,7 +380,7 @@ interface EmberCLIBabel {
   /**
     Used to generate the options that will ultimately be passed to babel itself.
   */
-  buildBabelOptions(config?: EmberCLIBabelConfig): Opaque;
+  buildBabelOptions(type: 'babel' | 'broccoli', config?: EmberCLIBabelConfig): Opaque;
 
   /**
     Supports easier transpilation of non-standard input paths (e.g. to transpile
@@ -407,7 +407,7 @@ interface EmberCLIBabel {
 let babelAddon = this.addons.find(addon => addon.name === 'ember-cli-babel');
 
 // create the babel options to use elsewhere based on the config above
-let options = babelAddon.buildBabelOptions(config)
+let options = babelAddon.buildBabelOptions('babel', config)
 
 // now you can pass these options off to babel or broccoli-babel-transpiler
 require('babel-core').transform('something', options);

index.js

@@ -44,12 +44,25 @@ module.exports = {
     }
   },
 
-  buildBabelOptions(_config) {
+  buildBabelOptions(configOrType, _config) {
+    let resultType;
+
+    if (typeof configOrType !== 'string') {
+      _config = configOrType;
+      resultType = 'broccoli';
+    } else if (configOrType === 'broccoli') {
+      resultType = 'broccoli';
+    } else if (configOrType === 'babel') {
+      resultType = 'babel';
+    }
+
     let config = _config || this._getAddonOptions();
 
     const customAddonConfig = config['ember-cli-babel'];
     const shouldUseBabelConfigFile = customAddonConfig && customAddonConfig.useBabelConfig;
 
+    let options;
+
     if (shouldUseBabelConfigFile) {
       let babelConfig = babel.loadPartialConfig({
         root: this.parent.root,
@@ -69,9 +82,16 @@ module.exports = {
 
       // If the babel config file is found, then pass the path into the options for the transpiler
       // parse and leverage the same.
-      return { configFile: babelConfig.config };
+      options = { configFile: babelConfig.config };
+    } else {
+      options = getBabelOptions(config, this);
+    }
+
+    if (resultType === 'babel') {
+      return options;
     } else {
-      return getBabelOptions(config, this);
+      // legacy codepath
+      return Object.assign({}, this._buildBroccoliBabelTranspilerOptions(config), options);
     }
   },
 
@@ -128,7 +148,7 @@ module.exports = {
     let config = _config || this._getAddonOptions();
     let description = `000${++count}`.slice(-3);
     let postDebugTree = this._debugTree(inputTree, `${description}:input`);
-    let options = Object.assign({}, this._buildBroccoliBabelTranspilerOptions(config), this.buildBabelOptions(config));
+    let options = Object.assign({}, this._buildBroccoliBabelTranspilerOptions(config), this.buildBabelOptions('babel', config));
     let output;
 
     const customAddonConfig = config['ember-cli-babel'];

node-tests/addon-test.js

@@ -1137,7 +1137,7 @@ describe('ember-cli-babel', function() {
     });
   });
 
-  describe('buildBabelOptions', function() {
+  describe('_buildBroccoliBabelTranspilerOptions', function() {
     this.timeout(0);
 
     it('disables reading `.babelrc`', function() {
@@ -1195,14 +1195,59 @@ describe('ember-cli-babel', function() {
 
       expect(result.babelrc).to.be.false;
     });
+  });
+
+  describe('buildBabelOptions', function() {
+    this.timeout(0);
+
+    it('returns broccoli-babel-transpiler options by default', function() {
+      let result = this.addon.buildBabelOptions();
+
+      expect(result.moduleIds).to.be.true;
+      expect(result.annotation).to.be;
+      expect(result.babelrc).to.be.false;
+      expect(result.configFile).to.be.false;
+    });
+
+    it('returns broccoli-babel-transpiler options when asked for', function() {
+      let result = this.addon.buildBabelOptions('broccoli');
+
+      expect(result.moduleIds).to.be.true;
+      expect(result.annotation).to.be;
+      expect(result.babelrc).to.be.false;
+      expect(result.configFile).to.be.false;
+    });
+
+    it('returns broccoli-babel-transpiler options with customizations when provided', function() {
+      let result = this.addon.buildBabelOptions('broccoli', {
+        'ember-cli-babel': {
+          annotation: 'hello!!!',
+        }
+      });
+
+      expect(result.annotation).to.equal('hello!!!');
+      expect(result.moduleIds).to.be.true;
+      expect(result.annotation).to.be;
+      expect(result.babelrc).to.be.false;
+      expect(result.configFile).to.be.false;
+    });
+
+    it('returns babel options when asked for', function() {
+      let result = this.addon.buildBabelOptions('babel');
+
+      expect('moduleIds' in result).to.be.false;
+      expect('annotation' in result).to.be.false;
+      expect('babelrc' in result).to.be.false;
+      expect('configFile' in result).to.be.false;
+    });
 
     it('does not include all provided options', function() {
       let babelOptions = { blah: true };
       let options = {
         babel: babelOptions
       };
 
-      let result = this.addon.buildBabelOptions(options);
+      let result = this.addon.buildBabelOptions('babel', options);
       expect(result.blah).to.be.undefined;
     });