Ignore packages inside node_modules from nohoist usage (#527)

.gitignore

@@ -1,5 +1,8 @@
 node_modules/
 
+# Any node_modules in test fixtures are allowed.
+!test/fixtures/**/node_modules/
+
 dist/
 
 .eslintcache

lib/workspace.ts

@@ -125,7 +125,12 @@ function expandWorkspaces(root: string, workspacePatterns: string[]): string[] {
       return [workspace];
     }
     // Use cwd instead of passing join()'d paths to globby for Windows support: https://github.com/micromatch/micromatch/blob/34f44b4f57eacbdbcc74f64252e0845cf44bbdbd/README.md?plain=1#L822
-    return globbySync(workspace, { onlyDirectories: true, cwd: root });
+    // Ignore any node_modules that may be present due to the use of nohoist.
+    return globbySync(workspace, {
+      onlyDirectories: true,
+      cwd: root,
+      ignore: ['**/node_modules'],
+    });
   });
 }
 

test/fixtures/index.ts

@@ -52,6 +52,10 @@ export const FIXTURE_PATH_VALID_WITH_PACKAGES = join(
   FIXTURE_PATH,
   'valid-with-packages'
 );
+export const FIXTURE_PATH_VALID_NOHOIST_WITH_NODE_MODULES = join(
+  FIXTURE_PATH,
+  'valid-nohoist-with-node-modules'
+);
 export const FIXTURE_PATH_WORKSPACE_PACKAGE_NOT_AN_ARRAY = join(
   FIXTURE_PATH,
   'workspace-packages-not-an-array'

test/fixtures/valid-nohoist-with-node-modules/package.json

@@ -0,0 +1,10 @@
+{
+  "workspaces": {
+    "packages": [
+      "packages/**"
+    ],
+    "nohoist": [
+      "**/resolve"
+    ]
+  }
+}

test/fixtures/valid-nohoist-with-node-modules/packages/package-a/package.json

@@ -0,0 +1,6 @@
+{
+  "name": "package-a",
+  "dependencies": {
+    "resolve": "^1.22.1"
+  }
+}

test/lib/workspace-test.ts

@@ -5,6 +5,7 @@ import {
   FIXTURE_PATH_NO_PACKAGE_JSON,
   FIXTURE_PATH_VALID,
   FIXTURE_PATH_VALID_WITH_PACKAGES,
+  FIXTURE_PATH_VALID_NOHOIST_WITH_NODE_MODULES,
   FIXTURE_PATH_WORKSPACE_NOT_AN_ARRAY,
   FIXTURE_PATH_WORKSPACE_PACKAGE_NOT_AN_ARRAY,
   FIXTURE_PATH_NESTED_WORKSPACES,
@@ -162,6 +163,22 @@ describe('Utils | workspace', function () {
         ].map((path) => join(FIXTURE_PATH_NESTED_WORKSPACES, path))
       );
     });
+
+    it('does not include packages in node_modules from nohoist usage (or crash from malformed package.json in node_modules test fixture)', function () {
+      expect(
+        getPackages(
+          FIXTURE_PATH_VALID_NOHOIST_WITH_NODE_MODULES,
+          [],
+          [],
+          [],
+          []
+        ).map((package_) => package_.path)
+      ).toStrictEqual(
+        ['.', '/packages/package-a'].map((path) =>
+          join(FIXTURE_PATH_VALID_NOHOIST_WITH_NODE_MODULES, path)
+        )
+      );
+    });
   });
 
   describe('#getWorkspaces', function () {