[yarnpkg#886] Added test for missing bundledDependencies

__tests__/commands/install/integration.js

@@ -7,10 +7,10 @@ import {run as check} from '../../../src/cli/commands/check.js';
 import * as constants from '../../../src/constants.js';
 import * as reporters from '../../../src/reporters/index.js';
 import {parse} from '../../../src/lockfile/wrapper.js';
-import {Install} from '../../../src/cli/commands/install.js';
+import {Install, run as install} from '../../../src/cli/commands/install.js';
 import Lockfile from '../../../src/lockfile/wrapper.js';
 import * as fs from '../../../src/util/fs.js';
-import {getPackageVersion, explodeLockfile, runInstall, createLockfile} from '../_helpers.js';
+import {getPackageVersion, explodeLockfile, runInstall, createLockfile, run as buildRun} from '../_helpers.js';
 
 jasmine.DEFAULT_TIMEOUT_INTERVAL = 150000;
 
@@ -958,3 +958,29 @@ test.concurrent('top level patterns should match after install', (): Promise<voi
     expect(integrityError).toBe(false);
   });
 });
+
+test.concurrent('warns for missing bundledDependencies', (): Promise<void> => {
+  const fixturesLoc = path.join(__dirname, '..', '..', 'fixtures', 'install');
+
+  return buildRun(
+    reporters.BufferReporter,
+    fixturesLoc,
+    async (args, flags, config, reporter): Promise<void> => {
+      await install(config, reporter, flags, args);
+
+      const output = reporter.getBuffer();
+      const warnings = output.filter(entry => entry.type === 'warning');
+
+      expect(
+        warnings.some(warning => {
+          return (
+            warning.data.toString().indexOf(reporter.lang('missingBundledDependency', '[email protected]', 'tap-consumer')) > -1
+          );
+        }),
+      ).toEqual(true);
+    },
+    [],
+    {},
+    'missing-bundled-dep',
+  );
+});

__tests__/fixtures/install/missing-bundled-dep/package.json

@@ -0,0 +1,5 @@
+{
+  "dependencies": {
+    "tap": "0.3.1"
+  }
+}

src/package-linker.js

@@ -99,11 +99,17 @@ export default class PackageLinker {
     if (pkg.bundleDependencies) {
       for (const depName of pkg.bundleDependencies) {
         const loc = path.join(this.config.generateHardModulePath(ref), this.config.getFolder(pkg), depName);
+        if (await fs.exists(loc)) {
+          try {
+            const dep = await this.config.readManifest(loc, remote.registry);
 
-        const dep = await this.config.readManifest(loc, remote.registry);
-
-        if (dep.bin && Object.keys(dep.bin).length) {
-          deps.push({dep, loc});
+            if (dep.bin && Object.keys(dep.bin).length) {
+              deps.push({dep, loc});
+            }
+          } catch (ex) {
+            // intentionally ignoring error.
+            // bundledDependency either does not exist or does not contain a package.json
+          }
         }
       }
     }
@@ -377,6 +383,10 @@ export default class PackageLinker {
         linkBinConcurrency,
       );
     }
+
+    for (const [, {pkg}] of flatTree) {
+      await this._warnForMissingBundledDependencies(pkg);
+    }
   }
 
   determineTopLevelBinLinks(flatTree: HoistManifestTuples): Array<[string, Manifest]> {
@@ -429,6 +439,20 @@ export default class PackageLinker {
     return range === '*' || satisfiesWithPreleases(version, range, this.config.looseSemver);
   }
 
+  async _warnForMissingBundledDependencies(pkg: Manifest): Promise<void> {
+    const ref = pkg._reference;
+
+    if (pkg.bundleDependencies) {
+      for (const depName of pkg.bundleDependencies) {
+        const loc = path.join(this.config.generateHardModulePath(ref), this.config.getFolder(pkg), depName);
+        if (!await fs.exists(loc)) {
+          const pkgHuman = `${pkg.name}@${pkg.version}`;
+          this.reporter.warn(this.reporter.lang('missingBundledDependency', pkgHuman, depName));
+        }
+      }
+    }
+  }
+
   async init(patterns: Array<string>, linkDuplicates: boolean, workspaceLayout?: WorkspaceLayout): Promise<void> {
     this.resolvePeerModules();
     await this.copyModules(patterns, linkDuplicates, workspaceLayout);

src/reporters/lang/en.js

@@ -194,6 +194,7 @@ const messages = {
 
   unmetPeer: '$0 has unmet peer dependency $1.',
   incorrectPeer: '$0 has incorrect peer dependency $1.',
+  missingBundledDependency: '$0 is missing a bundled dependency $1. This should be reported to the package maintainer.',
 
   savedNewDependency: 'Saved 1 new dependency.',
   savedNewDependencies: 'Saved $0 new dependencies.',