fix rename cause import change wrongly

src/harness/vfsUtil.ts

@@ -595,7 +595,9 @@ namespace vfs {
             if (existingNode) {
                 if (isDirectory(node)) {
                     if (!isDirectory(existingNode)) throw createIOError("ENOTDIR");
-                    if (this._getLinks(existingNode).size > 0) throw createIOError("ENOTEMPTY");
+                    // if both old and new arguments point to the same directory, just pass. So we could rename /src/a/1 to /src/A/1 in Win.
+                    // if not and the directory pointed by the new path is not empty, throw an error.
+                    if (this.stringComparer(oldpath, newpath) !== 0 && this._getLinks(existingNode).size > 0) throw createIOError("ENOTEMPTY");
                 }
                 else {
                     if (isDirectory(existingNode)) throw createIOError("EISDIR");

src/services/getEditsForFileRename.ts

@@ -126,8 +126,8 @@ namespace ts {
     ): void {
         const allFiles = program.getSourceFiles();
         for (const sourceFile of allFiles) {
-            const newFromOld = oldToNew(sourceFile.path) as Path;
-            const newImportFromPath = newFromOld !== undefined ? newFromOld : sourceFile.path;
+            const newFromOld = oldToNew(sourceFile.fileName);
+            const newImportFromPath = newFromOld ?? sourceFile.fileName;
             const newImportFromDirectory = getDirectoryPath(newImportFromPath);
 
             const oldFromNew: string | undefined = newToOld(sourceFile.fileName);
@@ -157,7 +157,7 @@ namespace ts {
 
                     // Need an update if the imported file moved, or the importing file moved and was using a relative path.
                     return toImport !== undefined && (toImport.updated || (importingSourceFileMoved && pathIsRelative(importLiteral.text)))
-                        ? moduleSpecifiers.updateModuleSpecifier(program.getCompilerOptions(), newImportFromPath, toImport.newFileName, createModuleSpecifierResolutionHost(program, host), importLiteral.text)
+                        ? moduleSpecifiers.updateModuleSpecifier(program.getCompilerOptions(), getCanonicalFileName(newImportFromPath) as Path, toImport.newFileName, createModuleSpecifierResolutionHost(program, host), importLiteral.text)
                         : undefined;
                 });
         }

tests/cases/fourslash/getEditsForFileRename_nodeModuleDirectoryCase.ts

@@ -0,0 +1,13 @@
+/// <reference path='fourslash.ts' />
+
+// @Filename: /a/b/file1.ts
+////import { foo } from "foo";
+
+// @Filename: /a/node_modules/foo/index.d.ts
+////export const foo = 0;
+
+verify.getEditsForFileRename({
+    oldPath: "/a/b",
+    newPath: "/a/B",
+    newFileContents: {},
+});