$

node_modules/regenerator-transform/lib/hoist.js

@@ -0,0 +1,138 @@
+"use strict";
+
+var util = _interopRequireWildcard(require("./util"));
+
+function _getRequireWildcardCache(nodeInterop) { if (typeof WeakMap !== "function") return null; var cacheBabelInterop = new WeakMap(); var cacheNodeInterop = new WeakMap(); return (_getRequireWildcardCache = function _getRequireWildcardCache(nodeInterop) { return nodeInterop ? cacheNodeInterop : cacheBabelInterop; })(nodeInterop); }
+
+function _interopRequireWildcard(obj, nodeInterop) { if (!nodeInterop && obj && obj.__esModule) { return obj; } if (obj === null || typeof obj !== "object" && typeof obj !== "function") { return { "default": obj }; } var cache = _getRequireWildcardCache(nodeInterop); if (cache && cache.has(obj)) { return cache.get(obj); } var newObj = {}; var hasPropertyDescriptor = Object.defineProperty && Object.getOwnPropertyDescriptor; for (var key in obj) { if (key !== "default" && Object.prototype.hasOwnProperty.call(obj, key)) { var desc = hasPropertyDescriptor ? Object.getOwnPropertyDescriptor(obj, key) : null; if (desc && (desc.get || desc.set)) { Object.defineProperty(newObj, key, desc); } else { newObj[key] = obj[key]; } } } newObj["default"] = obj; if (cache) { cache.set(obj, newObj); } return newObj; }
+
+/**
+ * Copyright (c) 2014-present, Facebook, Inc.
+ *
+ * This source code is licensed under the MIT license found in the
+ * LICENSE file in the root directory of this source tree.
+ */
+var hasOwn = Object.prototype.hasOwnProperty; // The hoist function takes a FunctionExpression or FunctionDeclaration
+// and replaces any Declaration nodes in its body with assignments, then
+// returns a VariableDeclaration containing just the names of the removed
+// declarations.
+
+exports.hoist = function (funPath) {
+  var t = util.getTypes();
+  t.assertFunction(funPath.node);
+  var vars = {};
+
+  function varDeclToExpr(_ref, includeIdentifiers) {
+    var vdec = _ref.node,
+        scope = _ref.scope;
+    t.assertVariableDeclaration(vdec); // TODO assert.equal(vdec.kind, "var");
+
+    var exprs = [];
+    vdec.declarations.forEach(function (dec) {
+      // Note: We duplicate 'dec.id' here to ensure that the variable declaration IDs don't
+      // have the same 'loc' value, since that can make sourcemaps and retainLines behave poorly.
+      vars[dec.id.name] = t.identifier(dec.id.name); // Remove the binding, to avoid "duplicate declaration" errors when it will
+      // be injected again.
+
+      scope.removeBinding(dec.id.name);
+
+      if (dec.init) {
+        exprs.push(t.assignmentExpression("=", dec.id, dec.init));
+      } else if (includeIdentifiers) {
+        exprs.push(dec.id);
+      }
+    });
+    if (exprs.length === 0) return null;
+    if (exprs.length === 1) return exprs[0];
+    return t.sequenceExpression(exprs);
+  }
+
+  funPath.get("body").traverse({
+    VariableDeclaration: {
+      exit: function exit(path) {
+        var expr = varDeclToExpr(path, false);
+
+        if (expr === null) {
+          path.remove();
+        } else {
+          // We don't need to traverse this expression any further because
+          // there can't be any new declarations inside an expression.
+          util.replaceWithOrRemove(path, t.expressionStatement(expr));
+        } // Since the original node has been either removed or replaced,
+        // avoid traversing it any further.
+
+
+        path.skip();
+      }
+    },
+    ForStatement: function ForStatement(path) {
+      var init = path.get("init");
+
+      if (init.isVariableDeclaration()) {
+        util.replaceWithOrRemove(init, varDeclToExpr(init, false));
+      }
+    },
+    ForXStatement: function ForXStatement(path) {
+      var left = path.get("left");
+
+      if (left.isVariableDeclaration()) {
+        util.replaceWithOrRemove(left, varDeclToExpr(left, true));
+      }
+    },
+    FunctionDeclaration: function FunctionDeclaration(path) {
+      var node = path.node;
+      vars[node.id.name] = node.id;
+      var assignment = t.expressionStatement(t.assignmentExpression("=", t.clone(node.id), t.functionExpression(path.scope.generateUidIdentifierBasedOnNode(node), node.params, node.body, node.generator, node.expression)));
+
+      if (path.parentPath.isBlockStatement()) {
+        // Insert the assignment form before the first statement in the
+        // enclosing block.
+        path.parentPath.unshiftContainer("body", assignment); // Remove the function declaration now that we've inserted the
+        // equivalent assignment form at the beginning of the block.
+
+        path.remove();
+      } else {
+        // If the parent node is not a block statement, then we can just
+        // replace the declaration with the equivalent assignment form
+        // without worrying about hoisting it.
+        util.replaceWithOrRemove(path, assignment);
+      } // Remove the binding, to avoid "duplicate declaration" errors when it will
+      // be injected again.
+
+
+      path.scope.removeBinding(node.id.name); // Don't hoist variables out of inner functions.
+
+      path.skip();
+    },
+    FunctionExpression: function FunctionExpression(path) {
+      // Don't descend into nested function expressions.
+      path.skip();
+    },
+    ArrowFunctionExpression: function ArrowFunctionExpression(path) {
+      // Don't descend into nested function expressions.
+      path.skip();
+    }
+  });
+  var paramNames = {};
+  funPath.get("params").forEach(function (paramPath) {
+    var param = paramPath.node;
+
+    if (t.isIdentifier(param)) {
+      paramNames[param.name] = param;
+    } else {// Variables declared by destructuring parameter patterns will be
+      // harmlessly re-declared.
+    }
+  });
+  var declarations = [];
+  Object.keys(vars).forEach(function (name) {
+    if (!hasOwn.call(paramNames, name)) {
+      declarations.push(t.variableDeclarator(vars[name], null));
+    }
+  });
+
+  if (declarations.length === 0) {
+    return null; // Be sure to handle this case!
+  }
+
+  return t.variableDeclaration("var", declarations);
+};

node_modules/regenerator-transform/lib/index.js

@@ -0,0 +1,29 @@
+"use strict";
+
+exports.__esModule = true;
+exports["default"] = _default;
+
+var _visit = require("./visit");
+
+/**
+ * Copyright (c) 2014-present, Facebook, Inc.
+ *
+ * This source code is licensed under the MIT license found in the
+ * LICENSE file in the root directory of this source tree.
+ */
+function _default(context) {
+  var plugin = {
+    visitor: (0, _visit.getVisitor)(context)
+  }; // Some presets manually call child presets, but fail to pass along the
+  // context object. Out of an abundance of caution, we verify that it
+  // exists first to avoid causing unnecessary breaking changes.
+
+  var version = context && context.version; // The "name" property is not allowed in older versions of Babel (6.x)
+  // and will cause the plugin validator to throw an exception.
+
+  if (version && parseInt(version, 10) >= 7) {
+    plugin.name = "regenerator-transform";
+  }
+
+  return plugin;
+}

node_modules/regenerator-transform/lib/leap.js

@@ -0,0 +1,178 @@
+"use strict";
+
+var _interopRequireDefault = require("@babel/runtime/helpers/interopRequireDefault");
+
+var _assert = _interopRequireDefault(require("assert"));
+
+var _emit = require("./emit");
+
+var _util = require("util");
+
+var _util2 = require("./util");
+
+/**
+ * Copyright (c) 2014-present, Facebook, Inc.
+ *
+ * This source code is licensed under the MIT license found in the
+ * LICENSE file in the root directory of this source tree.
+ */
+function Entry() {
+  _assert["default"].ok(this instanceof Entry);
+}
+
+function FunctionEntry(returnLoc) {
+  Entry.call(this);
+  (0, _util2.getTypes)().assertLiteral(returnLoc);
+  this.returnLoc = returnLoc;
+}
+
+(0, _util.inherits)(FunctionEntry, Entry);
+exports.FunctionEntry = FunctionEntry;
+
+function LoopEntry(breakLoc, continueLoc, label) {
+  Entry.call(this);
+  var t = (0, _util2.getTypes)();
+  t.assertLiteral(breakLoc);
+  t.assertLiteral(continueLoc);
+
+  if (label) {
+    t.assertIdentifier(label);
+  } else {
+    label = null;
+  }
+
+  this.breakLoc = breakLoc;
+  this.continueLoc = continueLoc;
+  this.label = label;
+}
+
+(0, _util.inherits)(LoopEntry, Entry);
+exports.LoopEntry = LoopEntry;
+
+function SwitchEntry(breakLoc) {
+  Entry.call(this);
+  (0, _util2.getTypes)().assertLiteral(breakLoc);
+  this.breakLoc = breakLoc;
+}
+
+(0, _util.inherits)(SwitchEntry, Entry);
+exports.SwitchEntry = SwitchEntry;
+
+function TryEntry(firstLoc, catchEntry, finallyEntry) {
+  Entry.call(this);
+  var t = (0, _util2.getTypes)();
+  t.assertLiteral(firstLoc);
+
+  if (catchEntry) {
+    _assert["default"].ok(catchEntry instanceof CatchEntry);
+  } else {
+    catchEntry = null;
+  }
+
+  if (finallyEntry) {
+    _assert["default"].ok(finallyEntry instanceof FinallyEntry);
+  } else {
+    finallyEntry = null;
+  } // Have to have one or the other (or both).
+
+
+  _assert["default"].ok(catchEntry || finallyEntry);
+
+  this.firstLoc = firstLoc;
+  this.catchEntry = catchEntry;
+  this.finallyEntry = finallyEntry;
+}
+
+(0, _util.inherits)(TryEntry, Entry);
+exports.TryEntry = TryEntry;
+
+function CatchEntry(firstLoc, paramId) {
+  Entry.call(this);
+  var t = (0, _util2.getTypes)();
+  t.assertLiteral(firstLoc);
+  t.assertIdentifier(paramId);
+  this.firstLoc = firstLoc;
+  this.paramId = paramId;
+}
+
+(0, _util.inherits)(CatchEntry, Entry);
+exports.CatchEntry = CatchEntry;
+
+function FinallyEntry(firstLoc, afterLoc) {
+  Entry.call(this);
+  var t = (0, _util2.getTypes)();
+  t.assertLiteral(firstLoc);
+  t.assertLiteral(afterLoc);
+  this.firstLoc = firstLoc;
+  this.afterLoc = afterLoc;
+}
+
+(0, _util.inherits)(FinallyEntry, Entry);
+exports.FinallyEntry = FinallyEntry;
+
+function LabeledEntry(breakLoc, label) {
+  Entry.call(this);
+  var t = (0, _util2.getTypes)();
+  t.assertLiteral(breakLoc);
+  t.assertIdentifier(label);
+  this.breakLoc = breakLoc;
+  this.label = label;
+}
+
+(0, _util.inherits)(LabeledEntry, Entry);
+exports.LabeledEntry = LabeledEntry;
+
+function LeapManager(emitter) {
+  _assert["default"].ok(this instanceof LeapManager);
+
+  _assert["default"].ok(emitter instanceof _emit.Emitter);
+
+  this.emitter = emitter;
+  this.entryStack = [new FunctionEntry(emitter.finalLoc)];
+}
+
+var LMp = LeapManager.prototype;
+exports.LeapManager = LeapManager;
+
+LMp.withEntry = function (entry, callback) {
+  _assert["default"].ok(entry instanceof Entry);
+
+  this.entryStack.push(entry);
+
+  try {
+    callback.call(this.emitter);
+  } finally {
+    var popped = this.entryStack.pop();
+
+    _assert["default"].strictEqual(popped, entry);
+  }
+};
+
+LMp._findLeapLocation = function (property, label) {
+  for (var i = this.entryStack.length - 1; i >= 0; --i) {
+    var entry = this.entryStack[i];
+    var loc = entry[property];
+
+    if (loc) {
+      if (label) {
+        if (entry.label && entry.label.name === label.name) {
+          return loc;
+        }
+      } else if (entry instanceof LabeledEntry) {// Ignore LabeledEntry entries unless we are actually breaking to
+        // a label.
+      } else {
+        return loc;
+      }
+    }
+  }
+
+  return null;
+};
+
+LMp.getBreakLoc = function (label) {
+  return this._findLeapLocation("breakLoc", label);
+};
+
+LMp.getContinueLoc = function (label) {
+  return this._findLeapLocation("continueLoc", label);
+};

node_modules/regenerator-transform/lib/meta.js

@@ -0,0 +1,113 @@
+"use strict";
+
+var _interopRequireDefault = require("@babel/runtime/helpers/interopRequireDefault");
+
+var _assert = _interopRequireDefault(require("assert"));
+
+var _util = require("./util.js");
+
+/**
+ * Copyright (c) 2014-present, Facebook, Inc.
+ *
+ * This source code is licensed under the MIT license found in the
+ * LICENSE file in the root directory of this source tree.
+ */
+var mMap = new WeakMap();
+
+function m(node) {
+  if (!mMap.has(node)) {
+    mMap.set(node, {});
+  }
+
+  return mMap.get(node);
+}
+
+var hasOwn = Object.prototype.hasOwnProperty;
+
+function makePredicate(propertyName, knownTypes) {
+  function onlyChildren(node) {
+    var t = (0, _util.getTypes)();
+    t.assertNode(node); // Assume no side effects until we find out otherwise.
+
+    var result = false;
+
+    function check(child) {
+      if (result) {// Do nothing.
+      } else if (Array.isArray(child)) {
+        child.some(check);
+      } else if (t.isNode(child)) {
+        _assert["default"].strictEqual(result, false);
+
+        result = predicate(child);
+      }
+
+      return result;
+    }
+
+    var keys = t.VISITOR_KEYS[node.type];
+
+    if (keys) {
+      for (var i = 0; i < keys.length; i++) {
+        var key = keys[i];
+        var child = node[key];
+        check(child);
+      }
+    }
+
+    return result;
+  }
+
+  function predicate(node) {
+    (0, _util.getTypes)().assertNode(node);
+    var meta = m(node);
+    if (hasOwn.call(meta, propertyName)) return meta[propertyName]; // Certain types are "opaque," which means they have no side
+    // effects or leaps and we don't care about their subexpressions.
+
+    if (hasOwn.call(opaqueTypes, node.type)) return meta[propertyName] = false;
+    if (hasOwn.call(knownTypes, node.type)) return meta[propertyName] = true;
+    return meta[propertyName] = onlyChildren(node);
+  }
+
+  predicate.onlyChildren = onlyChildren;
+  return predicate;
+}
+
+var opaqueTypes = {
+  FunctionExpression: true,
+  ArrowFunctionExpression: true
+}; // These types potentially have side effects regardless of what side
+// effects their subexpressions have.
+
+var sideEffectTypes = {
+  CallExpression: true,
+  // Anything could happen!
+  ForInStatement: true,
+  // Modifies the key variable.
+  UnaryExpression: true,
+  // Think delete.
+  BinaryExpression: true,
+  // Might invoke .toString() or .valueOf().
+  AssignmentExpression: true,
+  // Side-effecting by definition.
+  UpdateExpression: true,
+  // Updates are essentially assignments.
+  NewExpression: true // Similar to CallExpression.
+
+}; // These types are the direct cause of all leaps in control flow.
+
+var leapTypes = {
+  YieldExpression: true,
+  BreakStatement: true,
+  ContinueStatement: true,
+  ReturnStatement: true,
+  ThrowStatement: true
+}; // All leap types are also side effect types.
+
+for (var type in leapTypes) {
+  if (hasOwn.call(leapTypes, type)) {
+    sideEffectTypes[type] = leapTypes[type];
+  }
+}
+
+exports.hasSideEffects = makePredicate("hasSideEffects", sideEffectTypes);
+exports.containsLeap = makePredicate("containsLeap", leapTypes);

node_modules/regenerator-transform/lib/replaceShorthandObjectMethod.js

@@ -0,0 +1,81 @@
+"use strict";
+
+exports.__esModule = true;
+exports["default"] = replaceShorthandObjectMethod;
+
+var util = _interopRequireWildcard(require("./util"));
+
+function _getRequireWildcardCache(nodeInterop) { if (typeof WeakMap !== "function") return null; var cacheBabelInterop = new WeakMap(); var cacheNodeInterop = new WeakMap(); return (_getRequireWildcardCache = function _getRequireWildcardCache(nodeInterop) { return nodeInterop ? cacheNodeInterop : cacheBabelInterop; })(nodeInterop); }
+
+function _interopRequireWildcard(obj, nodeInterop) { if (!nodeInterop && obj && obj.__esModule) { return obj; } if (obj === null || typeof obj !== "object" && typeof obj !== "function") { return { "default": obj }; } var cache = _getRequireWildcardCache(nodeInterop); if (cache && cache.has(obj)) { return cache.get(obj); } var newObj = {}; var hasPropertyDescriptor = Object.defineProperty && Object.getOwnPropertyDescriptor; for (var key in obj) { if (key !== "default" && Object.prototype.hasOwnProperty.call(obj, key)) { var desc = hasPropertyDescriptor ? Object.getOwnPropertyDescriptor(obj, key) : null; if (desc && (desc.get || desc.set)) { Object.defineProperty(newObj, key, desc); } else { newObj[key] = obj[key]; } } } newObj["default"] = obj; if (cache) { cache.set(obj, newObj); } return newObj; }
+
+/**
+ * Copyright (c) 2014-present, Facebook, Inc.
+ *
+ * This source code is licensed under the MIT license found in the
+ * LICENSE file in the root directory of this source tree.
+ */
+// this function converts a shorthand object generator method into a normal
+// (non-shorthand) object property which is a generator function expression. for
+// example, this:
+//
+//  var foo = {
+//    *bar(baz) { return 5; }
+//  }
+//
+// should be replaced with:
+//
+//  var foo = {
+//    bar: function*(baz) { return 5; }
+//  }
+//
+// to do this, it clones the parameter array and the body of the object generator
+// method into a new FunctionExpression.
+//
+// this method can be passed any Function AST node path, and it will return
+// either:
+//   a) the path that was passed in (iff the path did not need to be replaced) or
+//   b) the path of the new FunctionExpression that was created as a replacement
+//     (iff the path did need to be replaced)
+//
+// In either case, though, the caller can count on the fact that the return value
+// is a Function AST node path.
+//
+// If this function is called with an AST node path that is not a Function (or with an
+// argument that isn't an AST node path), it will throw an error.
+function replaceShorthandObjectMethod(path) {
+  var t = util.getTypes();
+
+  if (!path.node || !t.isFunction(path.node)) {
+    throw new Error("replaceShorthandObjectMethod can only be called on Function AST node paths.");
+  } // this function only replaces shorthand object methods (called ObjectMethod
+  // in Babel-speak).
+
+
+  if (!t.isObjectMethod(path.node)) {
+    return path;
+  } // this function only replaces generators.
+
+
+  if (!path.node.generator) {
+    return path;
+  }
+
+  var parameters = path.node.params.map(function (param) {
+    return t.cloneDeep(param);
+  });
+  var functionExpression = t.functionExpression(null, // id
+  parameters, // params
+  t.cloneDeep(path.node.body), // body
+  path.node.generator, path.node.async);
+  util.replaceWithOrRemove(path, t.objectProperty(t.cloneDeep(path.node.key), // key
+  functionExpression, //value
+  path.node.computed, // computed
+  false // shorthand
+  )); // path now refers to the ObjectProperty AST node path, but we want to return a
+  // Function AST node path for the function expression we created. we know that
+  // the FunctionExpression we just created is the value of the ObjectProperty,
+  // so return the "value" path off of this path.
+
+  return path.get("value");
+}

node_modules/regenerator-transform/lib/util.js

@@ -0,0 +1,56 @@
+"use strict";
+
+exports.__esModule = true;
+exports.wrapWithTypes = wrapWithTypes;
+exports.getTypes = getTypes;
+exports.runtimeProperty = runtimeProperty;
+exports.isReference = isReference;
+exports.replaceWithOrRemove = replaceWithOrRemove;
+
+/**
+ * Copyright (c) 2014-present, Facebook, Inc.
+ *
+ * This source code is licensed under the MIT license found in the
+ * LICENSE file in the root directory of this source tree.
+ */
+var currentTypes = null;
+
+function wrapWithTypes(types, fn) {
+  return function () {
+    var oldTypes = currentTypes;
+    currentTypes = types;
+
+    try {
+      for (var _len = arguments.length, args = new Array(_len), _key = 0; _key < _len; _key++) {
+        args[_key] = arguments[_key];
+      }
+
+      return fn.apply(this, args);
+    } finally {
+      currentTypes = oldTypes;
+    }
+  };
+}
+
+function getTypes() {
+  return currentTypes;
+}
+
+function runtimeProperty(name) {
+  var t = getTypes();
+  return t.memberExpression(t.identifier("regeneratorRuntime"), t.identifier(name), false);
+}
+
+function isReference(path) {
+  return path.isReferenced() || path.parentPath.isAssignmentExpression({
+    left: path.node
+  });
+}
+
+function replaceWithOrRemove(path, replacement) {
+  if (replacement) {
+    path.replaceWith(replacement);
+  } else {
+    path.remove();
+  }
+}

node_modules/regenerator-transform/lib/visit.js

@@ -0,0 +1,328 @@
+/**
+ * Copyright (c) 2014-present, Facebook, Inc.
+ *
+ * This source code is licensed under the MIT license found in the
+ * LICENSE file in the root directory of this source tree.
+ */
+"use strict";
+
+var _interopRequireDefault = require("@babel/runtime/helpers/interopRequireDefault");
+
+var _assert = _interopRequireDefault(require("assert"));
+
+var _hoist = require("./hoist");
+
+var _emit = require("./emit");
+
+var _replaceShorthandObjectMethod = _interopRequireDefault(require("./replaceShorthandObjectMethod"));
+
+var util = _interopRequireWildcard(require("./util"));
+
+function _getRequireWildcardCache(nodeInterop) { if (typeof WeakMap !== "function") return null; var cacheBabelInterop = new WeakMap(); var cacheNodeInterop = new WeakMap(); return (_getRequireWildcardCache = function _getRequireWildcardCache(nodeInterop) { return nodeInterop ? cacheNodeInterop : cacheBabelInterop; })(nodeInterop); }
+
+function _interopRequireWildcard(obj, nodeInterop) { if (!nodeInterop && obj && obj.__esModule) { return obj; } if (obj === null || typeof obj !== "object" && typeof obj !== "function") { return { "default": obj }; } var cache = _getRequireWildcardCache(nodeInterop); if (cache && cache.has(obj)) { return cache.get(obj); } var newObj = {}; var hasPropertyDescriptor = Object.defineProperty && Object.getOwnPropertyDescriptor; for (var key in obj) { if (key !== "default" && Object.prototype.hasOwnProperty.call(obj, key)) { var desc = hasPropertyDescriptor ? Object.getOwnPropertyDescriptor(obj, key) : null; if (desc && (desc.get || desc.set)) { Object.defineProperty(newObj, key, desc); } else { newObj[key] = obj[key]; } } } newObj["default"] = obj; if (cache) { cache.set(obj, newObj); } return newObj; }
+
+exports.getVisitor = function (_ref) {
+  var t = _ref.types;
+  return {
+    Method: function Method(path, state) {
+      var node = path.node;
+      if (!shouldRegenerate(node, state)) return;
+      var container = t.functionExpression(null, [], t.cloneNode(node.body, false), node.generator, node.async);
+      path.get("body").set("body", [t.returnStatement(t.callExpression(container, []))]); // Regardless of whether or not the wrapped function is a an async method
+      // or generator the outer function should not be
+
+      node.async = false;
+      node.generator = false; // Unwrap the wrapper IIFE's environment so super and this and such still work.
+
+      path.get("body.body.0.argument.callee").unwrapFunctionEnvironment();
+    },
+    Function: {
+      exit: util.wrapWithTypes(t, function (path, state) {
+        var node = path.node;
+        if (!shouldRegenerate(node, state)) return; // if this is an ObjectMethod, we need to convert it to an ObjectProperty
+
+        path = (0, _replaceShorthandObjectMethod["default"])(path);
+        node = path.node;
+        var contextId = path.scope.generateUidIdentifier("context");
+        var argsId = path.scope.generateUidIdentifier("args");
+        path.ensureBlock();
+        var bodyBlockPath = path.get("body");
+
+        if (node.async) {
+          bodyBlockPath.traverse(awaitVisitor);
+        }
+
+        bodyBlockPath.traverse(functionSentVisitor, {
+          context: contextId
+        });
+        var outerBody = [];
+        var innerBody = [];
+        bodyBlockPath.get("body").forEach(function (childPath) {
+          var node = childPath.node;
+
+          if (t.isExpressionStatement(node) && t.isStringLiteral(node.expression)) {
+            // Babylon represents directives like "use strict" as elements
+            // of a bodyBlockPath.node.directives array, but they could just
+            // as easily be represented (by other parsers) as traditional
+            // string-literal-valued expression statements, so we need to
+            // handle that here. (#248)
+            outerBody.push(node);
+          } else if (node && node._blockHoist != null) {
+            outerBody.push(node);
+          } else {
+            innerBody.push(node);
+          }
+        });
+
+        if (outerBody.length > 0) {
+          // Only replace the inner body if we actually hoisted any statements
+          // to the outer body.
+          bodyBlockPath.node.body = innerBody;
+        }
+
+        var outerFnExpr = getOuterFnExpr(path); // Note that getOuterFnExpr has the side-effect of ensuring that the
+        // function has a name (so node.id will always be an Identifier), even
+        // if a temporary name has to be synthesized.
+
+        t.assertIdentifier(node.id);
+        var innerFnId = t.identifier(node.id.name + "$"); // Turn all declarations into vars, and replace the original
+        // declarations with equivalent assignment expressions.
+
+        var vars = (0, _hoist.hoist)(path);
+        var context = {
+          usesThis: false,
+          usesArguments: false,
+          getArgsId: function getArgsId() {
+            return t.clone(argsId);
+          }
+        };
+        path.traverse(argumentsThisVisitor, context);
+
+        if (context.usesArguments) {
+          vars = vars || t.variableDeclaration("var", []);
+          vars.declarations.push(t.variableDeclarator(t.clone(argsId), t.identifier("arguments")));
+        }
+
+        var emitter = new _emit.Emitter(contextId);
+        emitter.explode(path.get("body"));
+
+        if (vars && vars.declarations.length > 0) {
+          outerBody.push(vars);
+        }
+
+        var wrapArgs = [emitter.getContextFunction(innerFnId)];
+        var tryLocsList = emitter.getTryLocsList();
+
+        if (node.generator) {
+          wrapArgs.push(outerFnExpr);
+        } else if (context.usesThis || tryLocsList || node.async) {
+          // Async functions that are not generators don't care about the
+          // outer function because they don't need it to be marked and don't
+          // inherit from its .prototype.
+          wrapArgs.push(t.nullLiteral());
+        }
+
+        if (context.usesThis) {
+          wrapArgs.push(t.thisExpression());
+        } else if (tryLocsList || node.async) {
+          wrapArgs.push(t.nullLiteral());
+        }
+
+        if (tryLocsList) {
+          wrapArgs.push(tryLocsList);
+        } else if (node.async) {
+          wrapArgs.push(t.nullLiteral());
+        }
+
+        if (node.async) {
+          // Rename any locally declared "Promise" variable,
+          // to use the global one.
+          var currentScope = path.scope;
+
+          do {
+            if (currentScope.hasOwnBinding("Promise")) currentScope.rename("Promise");
+          } while (currentScope = currentScope.parent);
+
+          wrapArgs.push(t.identifier("Promise"));
+        }
+
+        var wrapCall = t.callExpression(util.runtimeProperty(node.async ? "async" : "wrap"), wrapArgs);
+        outerBody.push(t.returnStatement(wrapCall));
+        node.body = t.blockStatement(outerBody); // We injected a few new variable declarations (for every hoisted var),
+        // so we need to add them to the scope.
+
+        path.get("body.body").forEach(function (p) {
+          return p.scope.registerDeclaration(p);
+        });
+        var oldDirectives = bodyBlockPath.node.directives;
+
+        if (oldDirectives) {
+          // Babylon represents directives like "use strict" as elements of
+          // a bodyBlockPath.node.directives array. (#248)
+          node.body.directives = oldDirectives;
+        }
+
+        var wasGeneratorFunction = node.generator;
+
+        if (wasGeneratorFunction) {
+          node.generator = false;
+        }
+
+        if (node.async) {
+          node.async = false;
+        }
+
+        if (wasGeneratorFunction && t.isExpression(node)) {
+          util.replaceWithOrRemove(path, t.callExpression(util.runtimeProperty("mark"), [node]));
+          path.addComment("leading", "#__PURE__");
+        }
+
+        var insertedLocs = emitter.getInsertedLocs();
+        path.traverse({
+          NumericLiteral: function NumericLiteral(path) {
+            if (!insertedLocs.has(path.node)) {
+              return;
+            }
+
+            path.replaceWith(t.numericLiteral(path.node.value));
+          }
+        }); // Generators are processed in 'exit' handlers so that regenerator only has to run on
+        // an ES5 AST, but that means traversal will not pick up newly inserted references
+        // to things like 'regeneratorRuntime'. To avoid this, we explicitly requeue.
+
+        path.requeue();
+      })
+    }
+  };
+}; // Check if a node should be transformed by regenerator
+
+
+function shouldRegenerate(node, state) {
+  if (node.generator) {
+    if (node.async) {
+      // Async generator
+      return state.opts.asyncGenerators !== false;
+    } else {
+      // Plain generator
+      return state.opts.generators !== false;
+    }
+  } else if (node.async) {
+    // Async function
+    return state.opts.async !== false;
+  } else {
+    // Not a generator or async function.
+    return false;
+  }
+} // Given a NodePath for a Function, return an Expression node that can be
+// used to refer reliably to the function object from inside the function.
+// This expression is essentially a replacement for arguments.callee, with
+// the key advantage that it works in strict mode.
+
+
+function getOuterFnExpr(funPath) {
+  var t = util.getTypes();
+  var node = funPath.node;
+  t.assertFunction(node);
+
+  if (!node.id) {
+    // Default-exported function declarations, and function expressions may not
+    // have a name to reference, so we explicitly add one.
+    node.id = funPath.scope.parent.generateUidIdentifier("callee");
+  }
+
+  if (node.generator && // Non-generator functions don't need to be marked.
+  t.isFunctionDeclaration(node)) {
+    // Return the identifier returned by runtime.mark(<node.id>).
+    return getMarkedFunctionId(funPath);
+  }
+
+  return t.clone(node.id);
+}
+
+var markInfo = new WeakMap();
+
+function getMarkInfo(node) {
+  if (!markInfo.has(node)) {
+    markInfo.set(node, {});
+  }
+
+  return markInfo.get(node);
+}
+
+function getMarkedFunctionId(funPath) {
+  var t = util.getTypes();
+  var node = funPath.node;
+  t.assertIdentifier(node.id);
+  var blockPath = funPath.findParent(function (path) {
+    return path.isProgram() || path.isBlockStatement();
+  });
+
+  if (!blockPath) {
+    return node.id;
+  }
+
+  var block = blockPath.node;
+
+  _assert["default"].ok(Array.isArray(block.body));
+
+  var info = getMarkInfo(block);
+
+  if (!info.decl) {
+    info.decl = t.variableDeclaration("var", []);
+    blockPath.unshiftContainer("body", info.decl);
+    info.declPath = blockPath.get("body.0");
+  }
+
+  _assert["default"].strictEqual(info.declPath.node, info.decl); // Get a new unique identifier for our marked variable.
+
+
+  var markedId = blockPath.scope.generateUidIdentifier("marked");
+  var markCallExp = t.callExpression(util.runtimeProperty("mark"), [t.clone(node.id)]);
+  var index = info.decl.declarations.push(t.variableDeclarator(markedId, markCallExp)) - 1;
+  var markCallExpPath = info.declPath.get("declarations." + index + ".init");
+
+  _assert["default"].strictEqual(markCallExpPath.node, markCallExp);
+
+  markCallExpPath.addComment("leading", "#__PURE__");
+  return t.clone(markedId);
+}
+
+var argumentsThisVisitor = {
+  "FunctionExpression|FunctionDeclaration|Method": function FunctionExpressionFunctionDeclarationMethod(path) {
+    path.skip();
+  },
+  Identifier: function Identifier(path, state) {
+    if (path.node.name === "arguments" && util.isReference(path)) {
+      util.replaceWithOrRemove(path, state.getArgsId());
+      state.usesArguments = true;
+    }
+  },
+  ThisExpression: function ThisExpression(path, state) {
+    state.usesThis = true;
+  }
+};
+var functionSentVisitor = {
+  MetaProperty: function MetaProperty(path) {
+    var node = path.node;
+
+    if (node.meta.name === "function" && node.property.name === "sent") {
+      var t = util.getTypes();
+      util.replaceWithOrRemove(path, t.memberExpression(t.clone(this.context), t.identifier("_sent")));
+    }
+  }
+};
+var awaitVisitor = {
+  Function: function Function(path) {
+    path.skip(); // Don't descend into nested function scopes.
+  },
+  AwaitExpression: function AwaitExpression(path) {
+    var t = util.getTypes(); // Convert await expressions to yield expressions.
+
+    var argument = path.node.argument; // Transforming `await x` to `yield regeneratorRuntime.awrap(x)`
+    // causes the argument to be wrapped in such a way that the runtime
+    // can distinguish between awaited and merely yielded values.
+
+    util.replaceWithOrRemove(path, t.yieldExpression(t.callExpression(util.runtimeProperty("awrap"), [argument]), false));
+  }
+};