add Generated/User/Directive virtual node types

src/babel/traversal/path/introspection.js

@@ -147,18 +147,6 @@ export function isCompletionRecord(allowInsideFunction?) {
   return true;
 }
 
-/**
- * Check if the current node is a directive.
- */
-
-export function isDirective() {
-  if (this.isExpressionStatement()) {
-    return this.get("expression").isLiteral();
-  } else {
-    return this.isLiteral() && this.parentPath.isExpressionStatement();
-  }
-}
-
 /**
  * Check whether or not the current `key` allows either a single statement or block statement
  * so we can explode it if necessary.
@@ -172,22 +160,6 @@ export function isStatementOrBlock() {
   }
 }
 
-/**
- * Check whether this node was a part of the original AST.
- */
-
-export function isUser() {
-  return this.node && !!this.node.loc;
-}
-
-/**
- * Check whether this node was generated by us and not a part of the original AST.
- */
-
-export function isGenerated() {
-  return !this.isUser();
-}
-
 /**
  * Check if the currently assigned path references the `importName` of `moduleSource`.
  */

src/babel/traversal/path/lib/virtual-types.js

@@ -77,3 +77,29 @@ export var Var = {
     return t.isVar(path.node);
   }
 };
+
+export var DirectiveLiteral = {
+  types: ["Literal"],
+  checkPath(path) {
+    return path.isLiteral() && path.parentPath.isExpressionStatement();
+  }
+};
+
+export var Directive = {
+  types: ["ExpressionStatement"],
+  checkPath(path) {
+    return path.get("expression").isLiteral();
+  }
+};
+
+export var User = {
+  checkPath(path) {
+    return path.node && !!path.node.loc;
+  }
+};
+
+export var Generated = {
+  checkPath(path) {
+    return !path.isUser();
+  }
+};