fix(core): fix convert to monorepo eslint issue (#19713)

e2e/nx-misc/src/workspace.test.ts

@@ -39,6 +39,8 @@ describe('@nx/workspace:convert-to-monorepo', () => {
 
     expect(() => runCLI(`build ${reactApp}`)).not.toThrow();
     expect(() => runCLI(`test ${reactApp}`)).not.toThrow();
+    expect(() => runCLI(`lint ${reactApp}`)).not.toThrow();
+    expect(() => runCLI(`lint e2e`)).not.toThrow();
     expect(() => runCLI(`e2e e2e`)).not.toThrow();
   });
 });

packages/eslint/src/generators/utils/eslint-file.ts

@@ -82,15 +82,15 @@ export function updateRelativePathsInConfig(
     const config = tree.read(configPath, 'utf-8');
     tree.write(
       configPath,
-      replaceFlatConfigPaths(config, sourcePath, offset, destinationPath)
+      replaceFlatConfigPaths(config, sourcePath, offset, destinationPath, tree)
     );
   } else {
     updateJson(tree, configPath, (json) => {
       if (typeof json.extends === 'string') {
-        json.extends = offsetFilePath(sourcePath, json.extends, offset);
+        json.extends = offsetFilePath(sourcePath, json.extends, offset, tree);
       } else if (json.extends) {
         json.extends = json.extends.map((extend: string) =>
-          offsetFilePath(sourcePath, extend, offset)
+          offsetFilePath(sourcePath, extend, offset, tree)
         );
       }
 
@@ -114,7 +114,8 @@ function replaceFlatConfigPaths(
   config: string,
   sourceRoot: string,
   offset: string,
-  destinationRoot: string
+  destinationRoot: string,
+  tree: Tree
 ): string {
   let match;
   let newConfig = config;
@@ -122,7 +123,7 @@ function replaceFlatConfigPaths(
   // replace requires
   const requireRegex = RegExp(/require\(['"](.*)['"]\)/g);
   while ((match = requireRegex.exec(newConfig)) !== null) {
-    const newPath = offsetFilePath(sourceRoot, match[1], offset);
+    const newPath = offsetFilePath(sourceRoot, match[1], offset, tree);
     newConfig =
       newConfig.slice(0, match.index) +
       `require('${newPath}')` +
@@ -143,8 +144,20 @@ function replaceFlatConfigPaths(
 function offsetFilePath(
   projectRoot: string,
   pathToFile: string,
-  offset: string
+  offset: string,
+  tree: Tree
 ): string {
+  if (
+    eslintConfigFileWhitelist.some((eslintFile) =>
+      pathToFile.includes(eslintFile)
+    )
+  ) {
+    // if the file is point to base eslint
+    const rootEslint = findEslintFile(tree);
+    if (rootEslint) {
+      return joinPathFragments(offset, rootEslint);
+    }
+  }
   if (!pathToFile.startsWith('..')) {
     // not a relative path
     return pathToFile;

packages/workspace/src/generators/convert-to-monorepo/convert-to-monorepo.ts

@@ -20,7 +20,7 @@ export async function monorepoGenerator(tree: Tree, options: {}) {
   // Need to determine libs vs packages directory base on the type of root project.
   for (const [, project] of projects) {
     if (project.root === '.') rootProject = project;
-    projectsToMove.push(project);
+    projectsToMove.unshift(project); // move the root project 1st
   }
 
   // Currently, Nx only handles apps+libs or packages. You cannot mix and match them.

packages/workspace/src/generators/move/lib/extract-base-configs.ts

@@ -38,7 +38,7 @@ export function maybeExtractEslintConfigIfRootProject(
   // Only need to handle migrating the root rootProject.
   // If other libs/apps exist, then this migration is already done by `@nx/eslint:lint-rootProject` generator.
   migrateConfigToMonorepoStyle?.(
-    [rootProject.name],
+    [rootProject],
     tree,
     tree.exists(joinPathFragments(rootProject.root, 'jest.config.ts')) ||
       tree.exists(joinPathFragments(rootProject.root, 'jest.config.js'))

packages/workspace/src/generators/move/lib/update-eslint-config.ts

@@ -12,7 +12,12 @@ export function updateEslintConfig(
   project: ProjectConfiguration
 ) {
   // if there is no suitable eslint config, we don't need to do anything
-  if (!tree.exists('.eslintrc.json') && !tree.exists('eslint.config.js')) {
+  if (
+    !tree.exists('.eslintrc.json') &&
+    !tree.exists('eslint.config.js') &&
+    !tree.exists('.eslintrc.base.json') &&
+    !tree.exists('eslint.base.config.js')
+  ) {
     return;
   }
   try {