Merge branch 'external-runtime' into scoped-es6-runtime

lib/6to5/transformation/modules/amd.js

@@ -87,7 +87,7 @@ AMDFormatter.prototype.importSpecifier = function (specifier, node, nodes) {
   var key = t.getSpecifierName(specifier);
   var ref = this._push(node);
 
-  if (t.isImportBatchSpecifier(specifier)) {
+  if (t.isImportBatchSpecifier(specifier) || _.contains(this.file.dynamicImports, node)) {
     // import * as bar from "foo";
   } else if (t.isSpecifierDefault(specifier) && !this.noInteropRequire) {
     // import foo from "foo";

lib/6to5/transformation/modules/common.js

@@ -6,6 +6,7 @@ var DefaultFormatter = require("./_default");
 var traverse         = require("../../traverse");
 var util             = require("../../util");
 var t                = require("../../types");
+var _                = require("lodash");
 
 function CommonJSFormatter(file) {
   DefaultFormatter.apply(this, arguments);
@@ -26,13 +27,11 @@ CommonJSFormatter.prototype.importSpecifier = function (specifier, node, nodes)
 
   // import foo from "foo";
   if (t.isSpecifierDefault(specifier)) {
-    nodes.push(t.variableDeclaration("var", [
-      t.variableDeclarator(variableName,
-        t.callExpression(this.file.addHelper("interop-require"), [util.template("require", {
-          MODULE_NAME: node.source
-        })])
-      )
-    ]));
+    var ref = util.template("require", {MODULE_NAME: node.source});
+    if (!_.contains(this.file.dynamicImports, node)) {
+      ref = t.callExpression(this.file.addHelper("interop-require"), [ref]);
+    }
+    nodes.push(t.variableDeclaration("var", [t.variableDeclarator(variableName, ref)]));
   } else {
     if (specifier.type === "ImportBatchSpecifier") {
       // import * as bar from "foo";

lib/6to5/transformation/transform.js

@@ -95,6 +95,7 @@ _.each({
   _moduleFormatter:          require("./transformers/_module-formatter"),
 
   typeofSymbol:              require("./transformers/optional-typeof-symbol"),
+  externalRuntime:           require("./transformers/optional-external-runtime"),
   coreAliasing:              require("./transformers/optional-core-aliasing"),
   undefinedToVoid:           require("./transformers/optional-undefined-to-void"),
 

lib/6to5/transformation/transformers/optional-external-runtime.js

@@ -0,0 +1,10 @@
+exports.optional = true;
+
+// In theory, it would be more appropriate to do this in `manipulateOptions`,
+// but we need an identifier for the import and we can't get that before the
+// AST is built.
+exports.ast = {
+  enter: function (ast, file) {
+    file.opts.runtime = file.addImport(file.opts.runtime, "to5Runtime").name;
+  }
+};

test/fixtures/transformation/optional-bluebird-coroutines/expression/expected.js

@@ -1,10 +1,6 @@
 "use strict";
 
-var _interopRequire = function (obj) {
-  return obj && (obj["default"] || obj);
-};
-
-var _bluebird = _interopRequire(require("bluebird"));
+var _bluebird = require("bluebird");
 
 var foo = _bluebird.coroutine(function* () {
   var wat = yield bar();

test/fixtures/transformation/optional-bluebird-coroutines/statement/expected.js

@@ -1,10 +1,6 @@
 "use strict";
 
-var _interopRequire = function (obj) {
-  return obj && (obj["default"] || obj);
-};
-
-var _bluebird = _interopRequire(require("bluebird"));
+var _bluebird = require("bluebird");
 
 var foo = _bluebird.coroutine(function* foo() {
   var wat = yield bar();

test/fixtures/transformation/optional-core-aliasing/aliased-constructors/expected.js

@@ -1,10 +1,6 @@
 "use strict";
 
-var _interopRequire = function (obj) {
-  return obj && (obj["default"] || obj);
-};
-
-var _core = _interopRequire(require("core-js/library"));
+var _core = require("core-js/library");
 
 obj.constructor === Object;
 obj.constructor === _core.Promise;

test/fixtures/transformation/optional-core-aliasing/es6-destructuring/expected.js

@@ -16,11 +16,7 @@ var _slicedToArray = function (arr, i) {
   }
 };
 
-var _interopRequire = function (obj) {
-  return obj && (obj["default"] || obj);
-};
-
-var _core = _interopRequire(require("core-js/library"));
+var _core = require("core-js/library");
 
 var _ref = ["hello", [", ", "junk"], ["world"]];
 

test/fixtures/transformation/optional-core-aliasing/es6-for-of/expected.js

@@ -1,10 +1,6 @@
 "use strict";
 
-var _interopRequire = function (obj) {
-  return obj && (obj["default"] || obj);
-};
-
-var _core = _interopRequire(require("core-js/library"));
+var _core = require("core-js/library");
 
 for (var _iterator = _core.$for.getIterator(arr), _step; !(_step = _iterator.next()).done;) {
   var i = _step.value;

test/fixtures/transformation/optional-core-aliasing/es6-spread/expected.js

@@ -4,10 +4,6 @@ var _toArray = function (arr) {
   return Array.isArray(arr) ? arr : _core.Array.from(arr);
 };
 
-var _interopRequire = function (obj) {
-  return obj && (obj["default"] || obj);
-};
-
-var _core = _interopRequire(require("core-js/library"));
+var _core = require("core-js/library");
 
 var lyrics = ["head", "and", "toes"].concat(_toArray(parts));

test/fixtures/transformation/optional-core-aliasing/es7-array-comprehensions/expected.js

@@ -1,10 +1,6 @@
 "use strict";
 
-var _interopRequire = function (obj) {
-  return obj && (obj["default"] || obj);
-};
-
-var _core = _interopRequire(require("core-js/library"));
+var _core = require("core-js/library");
 
 var arr = (function () {
   var _arr = [];

test/fixtures/transformation/optional-external-runtime/amd/actual.js

@@ -0,0 +1 @@
+import foo from "someModule";

test/fixtures/transformation/optional-external-runtime/amd/expected.js

@@ -0,0 +1,6 @@
+define(["exports", "6to5-runtime", "someModule"], function (exports, _to5Runtime2, _someModule) {
+  "use strict";
+
+  var _to5Runtime = _to5Runtime2;
+  var foo = _to5Runtime.interopRequire(_someModule);
+});

test/fixtures/transformation/optional-external-runtime/amd/options.json

@@ -0,0 +1,3 @@
+{
+  "modules": "amd"
+}

test/fixtures/transformation/optional-external-runtime/commonjs/actual.js

@@ -0,0 +1 @@
+import * as foo from "someModule";

test/fixtures/transformation/optional-external-runtime/commonjs/expected.js

@@ -0,0 +1,5 @@
+"use strict";
+
+var _to5Runtime = require("6to5-runtime");
+
+var foo = _to5Runtime.interopRequireWildcard(require("someModule"));

test/fixtures/transformation/optional-external-runtime/options.json

@@ -0,0 +1,4 @@
+{
+  "runtime": "6to5-runtime",
+  "optional": ["externalRuntime"]
+}