rename category metadata option to group

src/babel/transformation/file/index.js

@@ -242,17 +242,17 @@ export default class File {
       // been merged
       if (ignore.indexOf(pass) >= 0) continue;
 
-      var category = pass.transformer.metadata.category;
+      var group = pass.transformer.metadata.group;
 
       // can't merge
-      if (!pass.canTransform() || !category) {
+      if (!pass.canTransform() || !group) {
         stack.push(pass);
         continue;
       }
 
       var mergeStack = [];
       for (let pass of (_stack: Array)) {
-        if (pass.transformer.metadata.category === category) {
+        if (pass.transformer.metadata.group === group) {
           mergeStack.push(pass);
           ignore.push(pass);
         }
@@ -263,7 +263,7 @@ export default class File {
         visitors.push(pass.handlers);
       }
       var visitor = traverse.visitors.merge(visitors);
-      var mergeTransformer = new Transformer(category, visitor);
+      var mergeTransformer = new Transformer(group, visitor);
       //console.log(mergeTransformer);
       stack.push(mergeTransformer.buildPass(this));
     }

src/babel/transformation/index.js

@@ -9,7 +9,7 @@ import transformers from "./transformers";
 for (var key in transformers) {
   var transformer = transformers[key];
   var metadata = transformer.metadata = transformer.metadata || {};
-  metadata.category = metadata.category || "builtin-basic";
+  metadata.group = metadata.group || "builtin-basic";
 }
 
 pipeline.addTransformers(transformers);

src/babel/transformation/transformers/es3/member-expression-literals.js

@@ -1,7 +1,7 @@
 import * as t from "../../../types";
 
 export var metadata = {
-  category: "builtin-trailing"
+  group: "builtin-trailing"
 };
 
 export var MemberExpression = {

src/babel/transformation/transformers/es3/property-literals.js

@@ -1,7 +1,7 @@
 import * as t from "../../../types";
 
 export var metadata = {
-  category: "builtin-trailing"
+  group: "builtin-trailing"
 };
 
 export var Property = {

src/babel/transformation/transformers/es6/block-scoping.js

@@ -38,7 +38,7 @@ function standardizeLets(declars) {
 }
 
 export var metadata = {
-  category: "builtin-advanced"
+  group: "builtin-advanced"
 };
 
 export function VariableDeclaration(node, parent, scope, file) {

src/babel/transformation/transformers/es6/destructuring.js

@@ -2,7 +2,7 @@ import * as messages from "../../../messages";
 import * as t from "../../../types";
 
 export var metadata = {
-  category: "builtin-advanced"
+  group: "builtin-advanced"
 };
 
 export function ForOfStatement(node, parent, scope, file) {

src/babel/transformation/transformers/es6/modules.js

@@ -9,7 +9,7 @@ function keepBlockHoist(node, nodes) {
 }
 
 export var metadata = {
-  category: "builtin-modules"
+  group: "builtin-modules"
 };
 
 export function ImportDeclaration(node, parent, scope, file) {

src/babel/transformation/transformers/es6/spec.block-scoping.js

@@ -29,7 +29,7 @@ var visitor = traverse.explode({
 
 export var metadata = {
   optional: true,
-  category: "builtin-advanced"
+  group: "builtin-advanced"
 };
 
 export var BlockStatement = {

src/babel/transformation/transformers/es6/tail-call.js

@@ -7,7 +7,7 @@ import map from "lodash/collection/map";
 import * as t from "../../../types";
 
 export var metadata = {
-  category: "builtin-trailing"
+  group: "builtin-trailing"
 };
 
 exports.Function = function (node, parent, scope, file) {

src/babel/transformation/transformers/internal/block-hoist.js

@@ -1,7 +1,7 @@
 import sortBy from "lodash/collection/sortBy";
 
 export var metadata = {
-  category: "builtin-trailing"
+  group: "builtin-trailing"
 };
 
 // Priority:

src/babel/transformation/transformers/internal/module-formatter.js

@@ -1,7 +1,7 @@
 import * as strict from "../../helpers/strict";
 
 export var metadata = {
-  category: "builtin-modules"
+  group: "builtin-modules"
 };
 
 export var Program = {

src/babel/transformation/transformers/internal/modules.js

@@ -7,7 +7,7 @@
 import * as t from "../../../types";
 
 export var metadata = {
-  category: "builtin-setup"
+  group: "builtin-setup"
 };
 
 export function ImportDeclaration(node, parent, scope, file) {

src/babel/transformation/transformers/internal/shadow-functions.js

@@ -86,7 +86,7 @@ function aliasFunction(getBody, path, scope) {
 // crawling the entire function tree
 
 export var metadata = {
-  category: "builtin-trailing"
+  group: "builtin-trailing"
 };
 
 export var Program = {

src/babel/transformation/transformers/internal/validation.js

@@ -2,7 +2,7 @@ import * as messages from "../../../messages";
 import * as t from "../../../types";
 
 export var metadata = {
-  category: "builtin-setup"
+  group: "builtin-setup"
 };
 
 export function ForOfStatement(node, parent, scope, file) {

src/babel/transformation/transformers/minification/dead-code-elimination.js

@@ -19,7 +19,7 @@ function toStatements(node) {
 
 export var metadata = {
   optional: true,
-  category: "builtin-setup"
+  group: "builtin-setup"
 };
 
 export function Identifier(node, parent, scope) {

src/babel/transformation/transformers/minification/member-expression-literals.js

@@ -2,7 +2,7 @@ import * as t from "../../../types";
 
 export var metadata = {
   optional: true,
-  category: "builtin-trailing"
+  group: "builtin-trailing"
 };
 
 export var MemberExpression = {

src/babel/transformation/transformers/minification/property-literals.js

@@ -2,7 +2,7 @@ import * as t from "../../../types";
 
 export var metadata = {
   optional: true,
-  category: "builtin-trailing"
+  group: "builtin-trailing"
 };
 
 export var Property = {

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

@@ -2,7 +2,7 @@ import regenerator from "regenerator";
 import * as t from "../../../types";
 
 export var metadata = {
-  category: "regenerator"
+  group: "regenerator"
 };
 
 export function Program(ast) {

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

@@ -11,7 +11,7 @@ const RUNTIME_MODULE_NAME = "babel-runtime";
 
 export var metadata = {
   optional: true,
-  category: "builtin-post-modules"
+  group: "builtin-post-modules"
 };
 
 export function pre(file) {

src/babel/transformation/transformers/spec/function-name.js

@@ -1,5 +1,5 @@
 export var metadata = {
-  category: "builtin-setup"
+  group: "builtin-setup"
 };
 
 export {

src/babel/transformation/transformers/utility/inline-environment-variables.js

@@ -2,7 +2,7 @@ import * as t from "../../../types";
 
 export var metadata = {
   optional: true,
-  category: "builtin-setup"
+  group: "builtin-setup"
 };
 
 var match = t.buildMatchMemberExpression("process.env");

src/babel/transformation/transformers/utility/inline-expressions.js

@@ -2,7 +2,7 @@ import * as t from "../../../types";
 
 export var metadata = {
   optional: true,
-  category: "builtin-setup"
+  group: "builtin-setup"
 };
 
 export function Expression(node, parent, scope) {

src/babel/transformation/transformers/utility/remove-console.js

@@ -2,7 +2,7 @@ import * as t from "../../../types";
 
 export var metadata = {
   optional: true,
-  category: "builtin-setup"
+  group: "builtin-setup"
 };
 
 export function CallExpression(node, parent) {

src/babel/transformation/transformers/utility/remove-debugger.js

@@ -2,7 +2,7 @@ import * as t from "../../../types";
 
 export var metadata = {
   optional: true,
-  category: "builtin-setup"
+  group: "builtin-setup"
 };
 
 export function ExpressionStatement(node) {