add plugin modes

packages/babel-core/src/api/node.js

@@ -5,7 +5,7 @@ import * as util from "../util";
 import fs from "fs";
 
 export { util, babylon as acorn, transform };
-export { pipeline } from "../transformation";
+export { pipeline, lint } from "../transformation";
 export { canCompile } from "../util";
 
 export { default as File } from "../transformation/file";

packages/babel-core/src/transformation/file/index.js

@@ -44,6 +44,8 @@ export default class File {
   ast                     = {};
 
   metadata = {
+    marked: [],
+
     modules: {
       imports: [],
       exports: {
@@ -518,7 +520,7 @@ export default class File {
     var features = parseOpts.features = {};
     for (var key in this.transformers) {
       var transformer = this.transformers[key];
-      features[key] = transformer.canTransform();
+      features[key] = transformer.canRun();
     }
 
     parseOpts.looseModules = this.isLoose("es6.modules");
@@ -660,7 +662,7 @@ export default class File {
   call(key: string) {
     for (var pass of (this.uncollapsedTransformerStack: Array)) {
       var fn = pass.plugin[key];
-      if (fn) fn(this);
+      if (fn) fn.call(pass, this);
     }
   }
 

packages/babel-core/src/transformation/file/options/config.json

@@ -25,6 +25,11 @@
     "default": {}
   },
 
+  "mode": {
+    "description": "",
+    "hidden": true
+  },
+
   "moduleId": {
     "description": "specify a custom name for module ids",
     "type": "string"

packages/babel-core/src/transformation/index.js

@@ -54,5 +54,6 @@ pipeline.addFilter(filters.optional);
 
 var transform = pipeline.transform.bind(pipeline);
 transform.fromAst = pipeline.transformFromAst.bind(pipeline);
+transform.lint = pipeline.lint.bind(pipeline);
 transform.pipeline = pipeline;
 export default transform;

packages/babel-core/src/transformation/pipeline.js

@@ -84,7 +84,7 @@ export default class Pipeline {
    * [Please add a description.]
    */
 
-  canTransform(plugin, fileOpts) {
+  canRun(plugin, fileOpts) {
     if (plugin.metadata.plugin) {
       return true;
     }
@@ -101,8 +101,9 @@ export default class Pipeline {
    * [Please add a description.]
    */
 
-  analyze(code: string, opts?: Object = {}) {
+  lint(code: string, opts?: Object = {}) {
     opts.code = false;
+    opts.mode = "lint";
     return this.transform(code, opts);
   }
 

packages/babel-core/src/transformation/plugin-pass.js

@@ -21,12 +21,24 @@ export default class PluginPass {
   }
 
   /**
- * [Please add a description.]
- */
+   * [Please add a description.]
+   */
 
   canTransform(): boolean {
+    if (this.plugin.metadata.mode !== this.file.opts.mode) {
+      return false;
+    } else {
+      return this.canRun();
+    }
+  }
+
+  /**
+   * [Please add a description.]
+   */
+
+  canRun() {
     return this.file.transformerDependencies[this.key] ||
-           this.file.pipeline.canTransform(this.plugin, this.file.opts);
+           this.file.pipeline.canRun(this.plugin, this.file.opts);
   }
 
   /**

packages/babel-core/src/transformation/plugin.js

@@ -18,7 +18,8 @@ const VALID_METADATA_PROPERTES = [
   "stage",
   "group",
   "experimental",
-  "secondPass"
+  "secondPass",
+  "mode"
 ];
 
 /**