resolve emberjs#5019

.yarnclean

@@ -0,0 +1,42 @@
+# test directories
+__tests__
+test
+tests
+powered-test
+
+# asset directories
+docs
+doc
+website
+images
+assets
+
+# examples
+example
+examples
+
+# code coverage directories
+coverage
+.nyc_output
+
+# build scripts
+Makefile
+Gulpfile.js
+Gruntfile.js
+
+# configs
+.tern-project
+.gitattributes
+.editorconfig
+.*ignore
+.eslintrc
+.jshintrc
+.flowconfig
+.documentup.json
+.yarn-metadata.json
+.*.yml
+*.yml
+
+# misc
+*.gz
+*.md

lib/stripped-build-plugins.js

@@ -55,12 +55,9 @@ module.exports = function(environment) {
 
   plugins.push(
     [FilterImports, filteredImports],
+    [StripFilteredImports, filteredImports],
     [TransformBlockScoping, { 'throwIfClosureRequired': true }]
   );
 
-  if (environment === 'production') {
-    plugins.push([StripFilteredImports, 'ember-data/-debug']);
-  }
-
   return { plugins, postTransformPlugins };
 };

lib/transforms/babel-plugin-remove-imports.js

@@ -1,15 +1,15 @@
-var path = require('path');
-
-function removeImports() {
+function PluginRemoveFilteredImports() {
   var importDeclarationsToRemove;
   var filteredImports;
+  var filteredImportNames;
 
   return {
     name: 'remove-filtered-imports',
     visitor: {
       Program: {
         enter: function(_, state) {
-          filteredImports = state.opts instanceof Array ? state.opts : (state.opts ? [state.opts] : []);
+          filteredImports = state.opts || {};
+          filteredImportNames = Object.keys(filteredImports);
           importDeclarationsToRemove = [];
         },
         exit: function() {
@@ -24,17 +24,48 @@ function removeImports() {
       ImportDeclaration: function(path) {
         var name = path.node.source.value;
 
-        if (filteredImports.indexOf(name) !== -1) {
-          importDeclarationsToRemove.push(path);
+        if (filteredImportNames.indexOf(name) !== -1) {
+          if (filteredImports[name] === true || filteredImports[name] === '*') {
+            importDeclarationsToRemove.push(path);
+          } else {
+            let removables = [];
+            let imports = path.node.specifiers;
+            const hasSpecifiers = imports.length > 0;
+
+            for (let i = 0; i < imports.length; i++) {
+              if (imports[i].type === 'ImportNamespaceSpecifier') {
+                continue;
+              }
+
+              let specifier = imports[i].imported;
+
+              if (!specifier) {
+                debugger;
+              }
+
+              if (filteredImports[name].indexOf(specifier.name) !== -1) {
+                removables.push(imports[i]);
+              }
+            }
+
+            if (hasSpecifiers && removables.length === imports.length) {
+              importDeclarationsToRemove.push(path);
+            } else {
+              for (let i = 0; i < removables.length; i++) {
+                let index = imports.indexOf(removables[i]);
+                imports.splice(index, 1);
+              }
+            }
+          }
         }
       }
 
     }
   };
 }
 
-removeImports.baseDir = function() {
+PluginRemoveFilteredImports.baseDir = function() {
   return __dirname;
 };
 
-module.exports = removeImports;
+module.exports = PluginRemoveFilteredImports;

node-tests/unit/babel-plugin-remove-imports-test.js

@@ -0,0 +1,110 @@
+const BroccoliTestHelper = require('broccoli-test-helper');
+const co = require('co');
+const Babel = require('broccoli-babel-transpiler');
+const chai = require('ember-cli-blueprint-test-helpers/chai');
+const stripIndent = require('common-tags').stripIndent;
+const StripFilteredImports = require('../../lib/transforms/babel-plugin-remove-imports');
+
+const { expect } = chai;
+const createTempDir = BroccoliTestHelper.createTempDir;
+const createBuilder = BroccoliTestHelper.createBuilder;
+
+function stripNewlines(str) {
+  return str.replace(/[\r\n]/g, '');
+}
+
+describe('Unit: babel-plugin-remove-filtered-imports', function() {
+  let plugins, pluginOptions;
+  let input, output;
+
+  function transform(code) {
+    return co.wrap(function* () {
+      input.write({ 'test.js': code });
+      let babel = new Babel(input.path(), {
+        plugins
+      });
+
+      output = createBuilder(babel);
+
+      yield output.build();
+    })();
+  }
+
+  function getOutput() {
+    const transpiled = output.read();
+
+    return stripNewlines(transpiled['test.js']);
+  }
+
+  beforeEach(co.wrap(function* () {
+    pluginOptions = {};
+
+    plugins = [
+      [StripFilteredImports, pluginOptions]
+    ];
+
+    input = yield createTempDir();
+  }));
+
+  afterEach(co.wrap(function* () {
+    if (input) {
+      yield input.dispose();
+    }
+    if (output) {
+      yield output.dispose();
+    }
+
+    input = output = undefined;
+  }));
+
+  it('Returns a plugin', function() {
+    let plugin = StripFilteredImports();
+    expect(plugin).to.be.ok;
+  });
+
+  it('Does not alter a file if no imports are meant to be filtered', co.wrap(function*() {
+    let input = stripIndent`
+      import Foo from 'bar';
+      import { baz } from 'none';
+      import * as drinks from 'drinks';
+      import 'bem';
+    `;
+
+    yield transform(input);
+
+    expect(getOutput()).to.equal(stripNewlines(input));
+  }));
+
+  it('Properly strips desired imports and specifiers', co.wrap(function*() {
+    let input = stripIndent`
+      import Foo from 'bar';
+      import { bit } from 'wow';
+      import { baz, bell } from 'none';
+      import { foo } from 'happy';
+      import * as drinks from 'drinks';
+      import * as dranks from 'dranks';
+      import 'bem';
+      import 'bosh';
+      import 'bell';
+    `;
+
+    pluginOptions.none = ['baz'];
+    pluginOptions.bar = true;
+    pluginOptions.drinks = '*';
+    pluginOptions.wow = ['bit'];
+    pluginOptions.bem = ['biz'];
+    pluginOptions.bosh = '*';
+    pluginOptions.dranks = ['bex'];
+    pluginOptions.bell = true;
+
+    yield transform(input);
+    let expectedOutput = stripNewlines(stripIndent`
+      import { bell } from 'none';
+      import { foo } from 'happy';
+      import * as dranks from 'dranks';
+      import 'bem';
+    `);
+
+    expect(getOutput()).to.equal(expectedOutput);
+  }));
+});

package.json

@@ -31,8 +31,11 @@
     "broccoli-funnel": "^1.2.0",
     "broccoli-merge-trees": "^2.0.0",
     "broccoli-rollup": "^1.2.0",
+    "broccoli-test-helper": "^1.2.0",
     "calculate-cache-key-for-tree": "^1.1.0",
     "chalk": "^1.1.1",
+    "co": "^4.6.0",
+    "common-tags": "^1.4.0",
     "ember-cli-babel": "^6.4.1",
     "ember-cli-path-utils": "^1.0.0",
     "ember-cli-string-utils": "^1.0.0",