From 96fca453b424dd6727ff7ea8c4786dc71798e3df Mon Sep 17 00:00:00 2001
From: Jason Jean <jasonjean1993@gmail.com>
Date: Mon, 1 May 2023 16:46:26 -0400
Subject: [PATCH] fix(core): improve touched projects locator performance
 (#16682)

---
 .../affected/locators/project-glob-changes.ts | 72 +++++++++----------
 1 file changed, 34 insertions(+), 38 deletions(-)

diff --git a/packages/nx/src/project-graph/affected/locators/project-glob-changes.ts b/packages/nx/src/project-graph/affected/locators/project-glob-changes.ts
index 566ef31dd9b86..f5fd0955e9bbf 100644
--- a/packages/nx/src/project-graph/affected/locators/project-glob-changes.ts
+++ b/packages/nx/src/project-graph/affected/locators/project-glob-changes.ts
@@ -1,9 +1,3 @@
-import {
-  DeletedFileChange,
-  isDeletedFileChange,
-  WholeFileChange,
-} from '../../file-utils';
-import { JsonChange } from '../../../utils/json-diff';
 import { TouchedProjectLocator } from '../affected-project-graph-models';
 import minimatch = require('minimatch');
 import {
@@ -12,40 +6,42 @@ import {
 } from '../../../config/workspaces';
 import { workspaceRoot } from '../../../utils/workspace-root';
 import { getNxRequirePaths } from '../../../utils/installation-directory';
+import { join } from 'path';
+import { existsSync } from 'fs';
 
-export const getTouchedProjectsFromProjectGlobChanges: TouchedProjectLocator<
-  WholeFileChange | JsonChange | DeletedFileChange
-> = async (touchedFiles, projectGraphNodes, nxJson): Promise<string[]> => {
-  const pluginGlobPatterns = await getGlobPatternsFromPluginsAsync(
-    nxJson,
-    getNxRequirePaths(),
-    workspaceRoot
-  );
-  const workspacesGlobPatterns =
-    getGlobPatternsFromPackageManagerWorkspaces(workspaceRoot) || [];
+export const getTouchedProjectsFromProjectGlobChanges: TouchedProjectLocator =
+  async (touchedFiles, projectGraphNodes, nxJson): Promise<string[]> => {
+    const pluginGlobPatterns = await getGlobPatternsFromPluginsAsync(
+      nxJson,
+      getNxRequirePaths(),
+      workspaceRoot
+    );
+    const workspacesGlobPatterns =
+      getGlobPatternsFromPackageManagerWorkspaces(workspaceRoot) || [];
 
-  const patterns = [
-    '**/project.json',
-    ...pluginGlobPatterns,
-    ...workspacesGlobPatterns,
-  ];
-  const combinedGlobPattern =
-    patterns.length === 1 ? '**/project.json' : '{' + patterns.join(',') + '}';
-  const touchedProjects = new Set<string>();
-  for (const touchedFile of touchedFiles) {
-    const isProjectFile = minimatch(touchedFile.file, combinedGlobPattern);
-    if (isProjectFile) {
-      if (
-        touchedFile.getChanges().some((change) => isDeletedFileChange(change))
-      ) {
-        // If any project has been deleted, we must assume all projects were affected
-        return Object.keys(projectGraphNodes);
-      }
+    const patterns = [
+      '**/project.json',
+      ...pluginGlobPatterns,
+      ...workspacesGlobPatterns,
+    ];
+    const combinedGlobPattern =
+      patterns.length === 1
+        ? '**/project.json'
+        : '{' + patterns.join(',') + '}';
+    const touchedProjects = new Set<string>();
+    for (const touchedFile of touchedFiles) {
+      const isProjectFile = minimatch(touchedFile.file, combinedGlobPattern);
+      if (isProjectFile) {
+        // If the file no longer exists on disk, then it was deleted
+        if (!existsSync(join(workspaceRoot, touchedFile.file))) {
+          // If any project has been deleted, we must assume all projects were affected
+          return Object.keys(projectGraphNodes);
+        }
 
-      // Modified project config files are under a project's root, and implicitly
-      // mark it as affected. Thus, we don't need to handle it here.
+        // Modified project config files are under a project's root, and implicitly
+        // mark it as affected. Thus, we don't need to handle it here.
+      }
     }
-  }
 
-  return Array.from(touchedProjects);
-};
+    return Array.from(touchedProjects);
+  };