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-core/src/util.js

@@ -1,21 +1,14 @@
+/* @flow */
+
 import escapeRegExp from "lodash/string/escapeRegExp";
 import startsWith from "lodash/string/startsWith";
-import cloneDeep from "lodash/lang/cloneDeep";
 import isBoolean from "lodash/lang/isBoolean";
-import * as messages from "babel-messages";
 import minimatch from "minimatch";
 import contains from "lodash/collection/contains";
-import traverse from "babel-traverse";
 import isString from "lodash/lang/isString";
 import isRegExp from "lodash/lang/isRegExp";
-import isEmpty from "lodash/lang/isEmpty";
-import parse from "./helpers/parse";
 import path from "path";
-import has from "lodash/object/has";
-import fs from "fs";
-import * as t from "babel-types";
 import slash from "slash";
-import pathExists from "path-exists";
 
 export { inherits, inspect } from "util";
 
@@ -56,11 +49,15 @@ export function list(val?: string): Array<string> {
  */
 
 export function regexify(val: any): RegExp {
-  if (!val) return new RegExp(/.^/);
+  if (!val) {
+    return new RegExp(/.^/);
+  }
 
-  if (Array.isArray(val)) val = new RegExp(val.map(escapeRegExp).join("|"), "i");
+  if (Array.isArray(val)) {
+    val = new RegExp(val.map(escapeRegExp).join("|"), "i");
+  }
 
-  if (isString(val)) {
+  if (typeof val === "string") {
     // normalise path separators
     val = slash(val);
 
@@ -72,7 +69,9 @@ export function regexify(val: any): RegExp {
     return new RegExp(regex.source.slice(1, -1), "i");
   }
 
-  if (isRegExp(val)) return val;
+  if (isRegExp(val)) {
+    return val;
+  }
 
   throw new TypeError("illegal type for regexify");
 }
@@ -99,8 +98,14 @@ export function arrayify(val: any, mapFn?: Function): Array<any> {
  */
 
 export function booleanify(val: any): boolean | any {
-  if (val === "true") return true;
-  if (val === "false") return false;
+  if (val === "true" || val == 1) {
+    return true;
+  }
+
+  if (val === "false" || val == 0 || !val) {
+    return false;
+  }
+
   return val;
 }
 
@@ -141,106 +146,3 @@ function _shouldIgnore(pattern: Function | RegExp, filename: string) {
     return pattern.test(filename);
   }
 }
-
-/**
- * A visitor for Babel templates, replaces placeholder references.
- */
-
-let templateVisitor = {
-  /**
-   * 360 NoScope PWNd
-   */
-  noScope: true,
-
-  enter(node: Object, parent: Object, scope, nodes: Array<Object>) {
-    if (t.isExpressionStatement(node)) {
-      node = node.expression;
-    }
-
-    if (t.isIdentifier(node) && has(nodes, node.name)) {
-      this.skip();
-      this.replaceInline(nodes[node.name]);
-    }
-  },
-
-  exit(node: Object) {
-    traverse.clearNode(node);
-  }
-};
-
-/**
- * Create an instance of a template to use in a transformer.
- */
-
-export function template(name: string, nodes?: Array<Object>, keepExpression?: boolean): Object {
-  let ast = exports.templates[name];
-  if (!ast) throw new ReferenceError(`unknown template ${name}`);
-
-  if (nodes === true) {
-    keepExpression = true;
-    nodes = null;
-  }
-
-  ast = cloneDeep(ast);
-
-  if (!isEmpty(nodes)) {
-    traverse(ast, templateVisitor, null, nodes);
-  }
-
-  if (ast.body.length > 1) return ast.body;
-
-  let node = ast.body[0];
-
-  if (!keepExpression && t.isExpressionStatement(node)) {
-    return node.expression;
-  } else {
-    return node;
-  }
-}
-
-/**
- * Parse a template.
- */
-
-export function parseTemplate(loc: string, code: string): Object {
-  try {
-    let ast = parse(code, { filename: loc, looseModules: true }).program;
-    ast = traverse.removeProperties(ast);
-    return ast;
-  } catch (err) {
-    err.message = `${loc}: ${err.message}`;
-    throw err;
-  }
-}
-
-/**
- * Load templates from transformation/templates directory.
- */
-
-function loadTemplates(): Object {
-  let templates = {};
-
-  let templatesLoc = path.join(__dirname, "transformation/templates");
-  if (!pathExists.sync(templatesLoc)) {
-    throw new ReferenceError(messages.get("missingTemplatesDirectory"));
-  }
-
-  for (let name of (fs.readdirSync(templatesLoc): Array)) {
-    if (name[0] === ".") continue;
-
-    let key  = path.basename(name, path.extname(name));
-    let loc  = path.join(templatesLoc, name);
-    let code = fs.readFileSync(loc, "utf8");
-
-    templates[key] = parseTemplate(loc, code);
-  }
-
-  return templates;
-}
-
-try {
-  exports.templates = require("../templates.json");
-} catch (err) {
-  if (err.code !== "MODULE_NOT_FOUND") throw err;
-  exports.templates = loadTemplates();
-}