add runtimeES3 transformer

.gitignore

@@ -11,7 +11,8 @@ test/core/tmp
 coverage
 dist
 .package.json
-packages/babel-runtime/*.js
-packages/babel-runtime/helpers/*.js
-packages/babel-runtime/regenerator/*.js
+packages/babel-runtime/es5/helpers/*.js
+packages/babel-runtime/es5/regenerator/*.js
+packages/babel-runtime/es3/helpers/*.js
+packages/babel-runtime/es3/regenerator/*.js
 lib

package.json

@@ -41,7 +41,7 @@
     "chokidar": "^0.12.6",
     "commander": "^2.6.0",
     "convert-source-map": "^0.5.0",
-    "core-js": "^0.6.1",
+    "core-js": "^0.7.0",
     "debug": "^2.1.1",
     "detect-indent": "^3.0.0",
     "estraverse": "^1.9.1",

packages/babel-runtime/es3/core-js.js

@@ -0,0 +1,4 @@
+module.exports = {
+  "default": require("core-js/client/library"),
+  __esModule: true
+};

packages/babel-runtime/es5/core-js.js

@@ -0,0 +1,4 @@
+module.exports = {
+  "default": require("core-js/library"),
+  __esModule: true
+};

packages/babel-runtime/package.json

@@ -5,6 +5,6 @@
   "repository": "babel/babel",
   "author": "Sebastian McKenzie <sebmck@gmail.com>",
   "dependencies": {
-    "core-js": "^0.6.1"
+    "core-js": "^0.7.0"
   }
 }

packages/build-runtime.js

@@ -1,5 +1,6 @@
 "use strict";
 
+var outputFile = require("output-file-sync");
 var transform  = require("../lib/babel/transformation");
 var each       = require("lodash/collection/each");
 var File       = require("../lib/babel/transformation/file");
@@ -8,17 +9,11 @@ var fs        = require("fs");
 var t          = require("../lib/babel/types");
 var _          = require("lodash");
 
-var relative = function (filename) {
+function relative(filename) {
   return __dirname + "/babel-runtime/" + filename;
-};
+}
 
-var writeFile = function (filename, content) {
-  filename = relative(filename);
-  console.log(filename);
-  fs.writeFileSync(filename, content);
-};
-
-var readFile = function (filename, defaultify) {
+function readFile(filename, defaultify) {
   var file = fs.readFileSync(require.resolve(filename), "utf8");
 
   if (defaultify) {
@@ -26,25 +21,38 @@ var readFile = function (filename, defaultify) {
   }
 
   return file;
-};
+}
 
-var updatePackage = function () {
+function updatePackage() {
   var pkgLoc = relative("package.json");
   var pkg    = require(pkgLoc);
 
   var mainPkg = require("../package.json");
   pkg.version = mainPkg.version;
 
-  writeFile("package.json", JSON.stringify(pkg, null, 2));
-};
+  writeRootFile("package.json", JSON.stringify(pkg, null, 2));
+}
 
-var selfContainify = function (code) {
+function writeRootFile(filename, content) {
+  filename = relative(filename);
+  console.log(filename);
+  outputFile(filename, content);
+}
+
+function doVersion(version) {
+  var transformer = "runtime" + version.toUpperCase();
+
+  function writeFile(filename, content) {
+    return writeRootFile(version + "/" + filename, content);
+  }
+
+  function selfContainify(code) {
     return transform(code, {
-    optional: ["runtime"]
+      optional: [transformer]
     }).code;
-};
+  }
 
-var buildHelper = function (helperName) {
+  function buildHelper(helperName) {
     var tree = t.program(
       util.template("self-contained-helpers-head", {
         HELPER: util.template("helper-" + helperName)
@@ -52,15 +60,18 @@ var buildHelper = function (helperName) {
     );
 
     return transform.fromAst(tree, null, {
-    optional: ["runtime"]
+      optional: [transformer]
     }).code;
-};
+  }
 
-each(File.helpers, function (helperName) {
+  each(File.helpers, function (helperName) {
     writeFile("helpers/" + helperName + ".js", buildHelper(helperName));
-});
+  });
 
-writeFile("core-js.js", readFile("core-js/library", true));
-writeFile("regenerator/index.js", readFile("regenerator-babel/runtime-module", true));
-writeFile("regenerator/runtime.js", selfContainify(readFile("regenerator-babel/runtime")));
+  writeFile("regenerator/index.js", readFile("regenerator-babel/runtime-module", true));
+  writeFile("regenerator/runtime.js", selfContainify(readFile("regenerator-babel/runtime")));
+}
+
+doVersion("es3");
+doVersion("es5");
 updatePackage();

src/babel/transformation/helpers/build-runtime-transformer.js

@@ -0,0 +1,101 @@
+import includes from "lodash/collection/includes";
+import * as util from  "../../util";
+import has from "lodash/object/has";
+import * as t from "../../types";
+
+var isSymbolIterator = t.buildMatchMemberExpression("Symbol.iterator");
+
+var ALIASABLE_CONSTRUCTORS = [
+  "Symbol",
+  "Promise",
+  "Map",
+  "WeakMap",
+  "Set",
+  "WeakSet"
+];
+
+export default function (exports, core, prefix) {
+  var moduleName = `babel-runtime/${prefix}`;
+
+  function coreHas(node) {
+    return node.name !== "_" && has(core, node.name);
+  }
+
+  var astVisitor = {
+    enter(node, parent, scope, file) {
+      var prop;
+
+      if (this.isMemberExpression() && this.isReferenced()) {
+        // Array.from -> _core.Array.from
+        var obj = node.object;
+        prop = node.property;
+
+        if (!t.isReferenced(obj, node)) return;
+
+        if (!node.computed && coreHas(obj) && has(core[obj.name], prop.name) && !scope.getBindingIdentifier(obj.name)) {
+          this.skip();
+          return t.prependToMemberExpression(node, file.get("coreIdentifier"));
+        }
+      } else if (this.isReferencedIdentifier() && !t.isMemberExpression(parent) && includes(ALIASABLE_CONSTRUCTORS, node.name) && !scope.getBindingIdentifier(node.name)) {
+        // Symbol() -> _core.Symbol(); new Promise -> new _core.Promise
+        return t.memberExpression(file.get("coreIdentifier"), node);
+      } else if (this.isCallExpression()) {
+        // arr[Symbol.iterator]() -> _core.$for.getIterator(arr)
+
+        var callee = node.callee;
+        if (node.arguments.length) return false;
+
+        if (!t.isMemberExpression(callee)) return false;
+        if (!callee.computed) return false;
+
+        prop = callee.property;
+        if (!isSymbolIterator(prop)) return false;
+
+        return util.template("corejs-iterator", {
+          CORE_ID: file.get("coreIdentifier"),
+          VALUE:   callee.object
+        });
+      } else if (this.isBinaryExpression()) {
+        // Symbol.iterator in arr -> core.$for.isIterable(arr)
+
+        if (node.operator !== "in") return;
+
+        var left = node.left;
+        if (!isSymbolIterator(left)) return;
+
+        return util.template("corejs-is-iterator", {
+          CORE_ID: file.get("coreIdentifier"),
+          VALUE:   node.right
+        });
+      }
+    }
+  };
+
+  exports.metadata = {
+    optional: true
+  };
+
+  exports.Program = function (node, parent, scope, file) {
+    this.traverse(astVisitor, file);
+  };
+
+  exports.pre = function (file) {
+    file.set("helperGenerator", function (name) {
+      return file.addImport(`${moduleName}/helpers/${name}`, name);
+    });
+
+    file.setDynamic("coreIdentifier", function () {
+      return file.addImport(`${moduleName}/core-js`, "core");
+    });
+
+    file.setDynamic("regeneratorIdentifier", function () {
+      return file.addImport(`${moduleName}/regenerator`, "regeneratorRuntime");
+    });
+  };
+
+  exports.Identifier = function (node, parent, scope, file) {
+    if (this.isReferencedIdentifier({ name: "regeneratorRuntime" })) {
+      return file.get("regeneratorIdentifier");
+    }
+  };
+};

src/babel/transformation/transformers/aliases.json

@@ -1,3 +1,4 @@
 {
-  "useStrict": "strict"
+  "useStrict": "strict",
+  "runtimeES5": "runtime"
 }

src/babel/transformation/transformers/index.js

@@ -83,6 +83,7 @@ export default {
   // needs to be after `regenerator` due to needing `regeneratorRuntime` references
   // needs to be after `es6.forOf` due to needing `Symbol.iterator` references
   // needs to be before `es6.modules` due to dynamic imports
+  runtimeES3:                             require("./other/runtime-es3"),
   runtime:                                require("./other/runtime"),
 
   // needs to be before `_blockHoist` due to function hoisting etc

src/babel/transformation/transformers/other/runtime-es3.js

@@ -0,0 +1,4 @@
+import core from "core-js/client/library";
+import buildRuntimeTransformer from "../../helpers/build-runtime-transformer";
+
+buildRuntimeTransformer(exports, core, "es3");

src/babel/transformation/transformers/other/runtime.js

@@ -1,103 +1,4 @@
-import includes from "lodash/collection/includes";
-import * as util from  "../../../util";
 import core from "core-js/library";
-import has from "lodash/object/has";
-import * as t from "../../../types";
+import buildRuntimeTransformer from "../../helpers/build-runtime-transformer";
 
-var isSymbolIterator = t.buildMatchMemberExpression("Symbol.iterator");
-
-var coreHas = function (node) {
-  return node.name !== "_" && has(core, node.name);
-};
-
-var ALIASABLE_CONSTRUCTORS = [
-  "Symbol",
-  "Promise",
-  "Map",
-  "WeakMap",
-  "Set",
-  "WeakSet"
-];
-
-var astVisitor = {
-  enter(node, parent, scope, file) {
-    var prop;
-
-    if (this.isMemberExpression() && this.isReferenced()) {
-      // Array.from -> _core.Array.from
-      var obj = node.object;
-      prop = node.property;
-
-      if (!t.isReferenced(obj, node)) return;
-
-      if (!node.computed && coreHas(obj) && has(core[obj.name], prop.name) && !scope.getBindingIdentifier(obj.name)) {
-        this.skip();
-        return t.prependToMemberExpression(node, file.get("coreIdentifier"));
-      }
-    } else if (this.isReferencedIdentifier() && !t.isMemberExpression(parent) && includes(ALIASABLE_CONSTRUCTORS, node.name) && !scope.getBindingIdentifier(node.name)) {
-      // Symbol() -> _core.Symbol(); new Promise -> new _core.Promise
-      return t.memberExpression(file.get("coreIdentifier"), node);
-    } else if (this.isCallExpression()) {
-      // arr[Symbol.iterator]() -> _core.$for.getIterator(arr)
-
-      var callee = node.callee;
-      if (node.arguments.length) return false;
-
-      if (!t.isMemberExpression(callee)) return false;
-      if (!callee.computed) return false;
-
-      prop = callee.property;
-      if (!isSymbolIterator(prop)) return false;
-
-      return util.template("corejs-iterator", {
-        CORE_ID: file.get("coreIdentifier"),
-        VALUE:   callee.object
-      });
-    } else if (this.isBinaryExpression()) {
-      // Symbol.iterator in arr -> core.$for.isIterable(arr)
-
-      if (node.operator !== "in") return;
-
-      var left = node.left;
-      if (!isSymbolIterator(left)) return;
-
-      return util.template("corejs-is-iterator", {
-        CORE_ID: file.get("coreIdentifier"),
-        VALUE:   node.right
-      });
-    }
-  }
-};
-
-export var metadata = {
-  optional: true,
-  react: true
-};
-
-export function manipulateOptions(opts) {
-  if (opts.whitelist) opts.whitelist.push("es6.modules");
-}
-
-export function Program(node, parent, scope, file) {
-  this.traverse(astVisitor, file);
-}
-
-export function pre(file) {
-  file.set("helperGenerator", function (name) {
-    return file.addImport("babel-runtime/helpers/" + name, name);
-  });
-
-  file.setDynamic("coreIdentifier", function () {
-    return file.addImport("babel-runtime/core-js", "core");
-  });
-
-  file.setDynamic("regeneratorIdentifier", function () {
-    return file.addImport("babel-runtime/regenerator", "regeneratorRuntime");
-  });
-}
-
-export function Identifier(node, parent, scope, file) {
-  if (this.isReferencedIdentifier({ name: "regeneratorRuntime" })) {
-    return file.get("regeneratorIdentifier");
-  }
-}
+buildRuntimeTransformer(exports, core, "es5");