6.0.0

I'm extremely stupid and didn't commit as I go. To anyone reading this
I'm extremely sorry. A lot of these changes are very broad and I plan on
releasing Babel 6.0.0 today live on stage at Ember Camp London so I'm
afraid I couldn't wait. If you're ever in London I'll buy you a beer
(or assorted beverage!) to make up for it, also I'll kiss your feet and
give you a back massage, maybe.

packages/babel-helper-define-map/README.md

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+# babel-helper-define-map
+
+## Usage
+
+TODO

packages/babel-helper-define-map/package.json

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+{
+  "name": "babel-helper-define-map",
+  "version": "1.0.0",
+  "description": "",
+  "repository": "babel/babel",
+  "license": "MIT",
+  "main": "lib/index.js",
+  "dependencies": {
+    "babel-runtime": "^5.8.20",
+    "lodash": "^3.10.0",
+    "babel-types": "^5.8.20",
+    "babel-helper-function-name": "^5.0.0"
+  }
+}

packages/babel-helper-define-map/src/index.js

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+/* @flow */
+
+import nameFunction from "babel-helper-function-name";
+import each from "lodash/collection/each";
+import has from "lodash/object/has";
+import * as t from "babel-types";
+
+function toKind(node: Object) {
+  if (t.isClassMethod(node) || t.isObjectMethod(node)) {
+    if (node.kind === "get" || node.kind === "set") {
+      return node.kind;
+    }
+  }
+
+  return "value";
+}
+
+export function push(mutatorMap: Object, node: Object, kind: string, file, scope?): Object {
+  let alias = t.toKeyAlias(node);
+
+  //
+
+  let map = {};
+  if (has(mutatorMap, alias)) map = mutatorMap[alias];
+  mutatorMap[alias] = map;
+
+  //
+
+  map._inherits = map._inherits || [];
+  map._inherits.push(node);
+
+  map._key = node.key;
+
+  if (node.computed) {
+    map._computed = true;
+  }
+
+  if (node.decorators) {
+    let decorators = map.decorators = map.decorators || t.arrayExpression([]);
+    decorators.elements = decorators.elements.concat(node.decorators.map(dec => dec.expression).reverse());
+  }
+
+  if (map.value || map.initializer) {
+    throw file.buildCodeFrameError(node, "Key conflict with sibling node");
+  }
+
+  let key, value;
+
+  // save the key so we can possibly do function name inferences
+  if (t.isObjectProperty(node) || t.isObjectMethod(node) || t.isClassMethod(node)) {
+    key = t.toComputedKey(node, node.key);
+  }
+
+  if (t.isObjectProperty(node) || t.isClassProperty(node)) {
+    value = node.value;
+  } else if (t.isObjectMethod(node) || t.isClassMethod(node)) {
+    value = t.functionExpression(null, node.params, node.body, node.generator, node.async);
+  }
+
+  let inheritedKind = toKind(node);
+  if (!kind || inheritedKind !== "value") {
+    kind = inheritedKind;
+  }
+
+  // infer function name
+  if (scope && t.isStringLiteral(key) && (kind === "value" || kind === "initializer") && t.isFunctionExpression(value)) {
+    value = nameFunction({ id: key, node: value, scope });
+  }
+
+  if (value) {
+    t.inheritsComments(value, node);
+    map[kind] = value;
+  }
+
+  return map;
+}
+
+export function hasComputed(mutatorMap: Object): boolean {
+  for (let key in mutatorMap) {
+    if (mutatorMap[key]._computed) {
+      return true;
+    }
+  }
+  return false;
+}
+
+export function toComputedObjectFromClass(obj: Object): Object {
+  let objExpr = t.arrayExpression([]);
+
+  for (let i = 0; i < obj.properties.length; i++) {
+    let prop = obj.properties[i];
+    let val = prop.value;
+    val.properties.unshift(t.objectProperty(t.identifier("key"), t.toComputedKey(prop)));
+    objExpr.elements.push(val);
+  }
+
+  return objExpr;
+}
+
+export function toClassObject(mutatorMap: Object): Object {
+  let objExpr = t.objectExpression([]);
+
+  each(mutatorMap, function (map) {
+    let mapNode = t.objectExpression([]);
+
+    let propNode = t.objectProperty(map._key, mapNode, map._computed);
+
+    each(map, function (node, key) {
+      if (key[0] === "_") return;
+
+      let inheritNode = node;
+      if (t.isClassMethod(node) || t.isClassProperty(node)) node = node.value;
+
+      let prop = t.objectProperty(t.identifier(key), node);
+      t.inheritsComments(prop, inheritNode);
+      t.removeComments(inheritNode);
+
+      mapNode.properties.push(prop);
+    });
+
+    objExpr.properties.push(propNode);
+  });
+
+  return objExpr;
+}
+
+export function toDefineObject(mutatorMap: Object): Object {
+  each(mutatorMap, function (map) {
+    if (map.value) map.writable = t.booleanLiteral(true);
+    map.configurable = t.booleanLiteral(true);
+    map.enumerable = t.booleanLiteral(true);
+  });
+
+  return toClassObject(mutatorMap);
+}