Merge 05a0ee5 into b8b0396

lib/index.js

@@ -26,7 +26,8 @@ async function getLatestVersions(name) {
   isValidNpmPackageName(name);
   const { stdout } = await execAsync(`npm view ${name} versions --json`);
   try {
-    return JSON.parse(stdout);
+    const versions = JSON.parse(stdout);
+    return Array.isArray(versions) ? versions : [versions];
   } catch (err) {
     throw new Error(`Failed to parse output from NPM view - ${err.toString()}`);
   }

lib/index.test.js

@@ -425,6 +425,19 @@ describe('lib/index', () => {
       'NPM package name: "bad name Dependency" is invalid. name can only contain URL-friendly characters'
     );
   });
+
+  test('should verify dependencies when npm module has only one version available, npm view returns string instead of array', async () => {
+    mockExports.version = '1.1.1';
+    mockExports.dependencies = { foo1: '1.1.1' };
+    mockExports.devDependencies = {};
+
+    mockExecAsync.mockImplementationOnce(() => Promise.resolve({ stdout: '"1.1.1"' }));
+    await verifyDeps({ dir, logger });
+
+    expect(logger.info).toHaveBeenCalledTimes(2);
+    expect(logger.info).toHaveBeenNthCalledWith(1, 'Verifying dependencies…\n');
+    expect(logger.info).toHaveBeenNthCalledWith(2, `All NPM modules are up to date.`);
+  });
 });
 
 module.exports = mockExports;