fix(core): handle undefined when package.json changes are not in node modules

packages/nx/src/project-graph/affected/locators/npm-packages.spec.ts

@@ -1,6 +1,7 @@
 import { NxJsonConfiguration } from '../../../config/nx-json';
 import { ProjectGraph } from '../../../config/project-graph';
 import { JsonDiffType } from '../../../utils/json-diff';
+import { logger } from '../../../utils/logger';
 import { WholeFileChange } from '../../file-utils';
 import { getTouchedNpmPackages } from './npm-packages';
 
@@ -265,4 +266,41 @@ describe('getTouchedNpmPackages', () => {
       'npm:awesome-nrwl',
     ]);
   });
+  it('should handle and log workspace package.json changes when the changes are not in `npmPackages` (projectGraph.externalNodes)', () => {
+    jest.spyOn(logger, 'warn');
+    expect(() => {
+      getTouchedNpmPackages(
+        [
+          {
+            file: 'package.json',
+            hash: 'some-hash',
+            getChanges: () => [
+              {
+                type: 'JsonPropertyAdded',
+                path: ['devDependencies', 'changed-test-pkg-name-1'],
+                value: { rhs: 'workspace:*' },
+              },
+              {
+                type: 'JsonPropertyAdded',
+                path: ['devDependencies', 'changed-test-pkg-name-2'],
+                value: { rhs: 'workspace:*' },
+              },
+            ],
+          },
+        ],
+        workspaceJson,
+        nxJson,
+        {
+          dependencies: {
+            'happy-nrwl': '0.0.1',
+            'awesome-nrwl': '0.0.1',
+          },
+        },
+        projectGraph
+      );
+    }).not.toThrowError();
+    expect(logger.warn).toHaveBeenCalledWith(
+      'The affected projects might have not been identified properly. The package(s) changed-test-pkg-name-1, changed-test-pkg-name-2 were not found. Please open an issue in Github including the package.json file.'
+    );
+  });
 });

packages/nx/src/project-graph/affected/locators/npm-packages.ts

@@ -4,6 +4,7 @@ import {
   isJsonChange,
   JsonChange,
 } from '../../../utils/json-diff';
+import { logger } from '../../../utils/logger';
 import { TouchedProjectLocator } from '../affected-project-graph-models';
 
 export const getTouchedNpmPackages: TouchedProjectLocator<
@@ -17,6 +18,8 @@ export const getTouchedNpmPackages: TouchedProjectLocator<
 
   const npmPackages = Object.values(projectGraph.externalNodes);
 
+  const missingTouchedNpmPackages: string[] = [];
+
   for (const c of changes) {
     if (
       isJsonChange(c) &&
@@ -31,6 +34,10 @@ export const getTouchedNpmPackages: TouchedProjectLocator<
         const npmPackage = npmPackages.find(
           (pkg) => pkg.data.packageName === c.path[1]
         );
+        if (!npmPackage) {
+          missingTouchedNpmPackages.push(c.path[1]);
+          continue;
+        }
         touched.push(npmPackage.name);
         // If it was a type declarations package then also mark its corresponding implementation package as affected
         if (npmPackage.name.startsWith('npm:@types/')) {
@@ -49,5 +56,12 @@ export const getTouchedNpmPackages: TouchedProjectLocator<
     }
   }
 
+  if (missingTouchedNpmPackages.length) {
+    logger.warn(
+      `The affected projects might have not been identified properly. The package(s) ${missingTouchedNpmPackages.join(
+        ', '
+      )} were not found. Please open an issue in Github including the package.json file.`
+    );
+  }
   return touched;
 };