feat(core): import warns when source and destination directories are …

…different (#27875)

This PR adds a warning when the user choose different source and
destination roots. This is a problem for Nx workspaces using path
options in `project.json`, and possibly other config files such as
`tsconfig.json`, `jest.config.ts`, etc.

Note: Also included a guard that the destination directory isn't an
absolute path like `/tmp/foo`, because the behavior will not work as
expected.

The message when the source is an Nx workspace:
<img width="1392" alt="Screenshot 2024-09-11 at 9 32 54 AM"
src="https://github.com/user-attachments/assets/c8ebedba-fd66-4dbf-ada9-eacf86bd67fc">

The message when the source is not an Nx workspace:
<img width="1392" alt="Screenshot 2024-09-11 at 9 30 44 AM"
src="https://github.com/user-attachments/assets/ade9fbd1-4d5d-4d0c-93f6-eaad176af333">

(cherry picked from commit 8b177bd)

packages/nx/src/command-line/import/import.ts

@@ -1,4 +1,4 @@
-import { dirname, join, relative, resolve } from 'path';
+import { dirname, isAbsolute, join, relative, resolve } from 'path';
 import { minimatch } from 'minimatch';
 import { existsSync, promises as fsp } from 'node:fs';
 import * as chalk from 'chalk';
@@ -177,6 +177,13 @@ export async function importHandler(options: ImportOptions) {
   }
 
   const absSource = join(sourceTempRepoPath, source);
+
+  if (isAbsolute(destination)) {
+    throw new Error(
+      `The destination directory must be a relative path in this repository.`
+    );
+  }
+
   const absDestination = join(process.cwd(), destination);
 
   const destinationGitClient = new GitRepository(process.cwd());
@@ -210,6 +217,8 @@ export async function importHandler(options: ImportOptions) {
     packageManager
   );
 
+  const sourceIsNxWorkspace = existsSync(join(sourceGitClient.root, 'nx.json'));
+
   const relativeDestination = relative(
     destinationGitClient.root,
     absDestination
@@ -310,6 +319,19 @@ export async function importHandler(options: ImportOptions) {
 
   await warnOnMissingWorkspacesEntry(packageManager, pmc, relativeDestination);
 
+  if (source != destination) {
+    output.warn({
+      title: `Check configuration files`,
+      bodyLines: [
+        `The source directory (${source}) and destination directory (${destination}) are different.`,
+        `You may need to update configuration files to match the directory in this repository.`,
+        sourceIsNxWorkspace
+          ? `For example, path options in project.json such as "main", "tsConfig", and "outputPath" need to be updated.`
+          : `For example, relative paths in tsconfig.json and other tooling configuration files may need to be updated.`,
+      ],
+    });
+  }
+
   // When only a subdirectory is imported, there might be devDependencies in the root package.json file
   // that needs to be ported over as well.
   if (ref) {