feat(npm): check if branch already updated (#13185)

lib/manager/npm/update/locked-dependency/index.spec.ts

@@ -109,6 +109,13 @@ describe('manager/npm/update/locked-dependency/index', () => {
       const packageLock = JSON.parse(res.files['package-lock.json']);
       expect(packageLock.dependencies.express.version).toBe('4.1.0');
     });
+    it('returns if already remediated', async () => {
+      config.depName = 'mime';
+      config.currentVersion = '1.2.10';
+      config.newVersion = '1.2.11';
+      const res = await updateLockedDependency(config);
+      expect(res.status).toBe('already-updated');
+    });
     it('remediates mime', async () => {
       config.depName = 'mime';
       config.currentVersion = '1.2.11';

lib/manager/npm/update/locked-dependency/package-lock/index.ts

@@ -47,18 +47,32 @@ export async function updateLockedDependency(
       currentVersion
     );
     if (!lockedDeps.length) {
-      logger.debug(
-        `${depName}@${currentVersion} not found in ${lockFile} - no work to do`
+      const newLockedDeps = getLockedDependencies(
+        packageLockJson,
+        depName,
+        newVersion
       );
+      let status: 'update-failed' | 'already-updated';
+      if (newLockedDeps.length) {
+        logger.debug(
+          `${depName}@${currentVersion} not found in ${lockFile} but ${depName}@${newVersion} was - looks like it's already updated`
+        );
+        status = 'already-updated';
+      } else {
+        logger.debug(
+          `${depName}@${currentVersion} not found in ${lockFile} - cannot update`
+        );
+        status = 'update-failed';
+      }
       // Don't return {} if we're a parent update or else the whole update will fail
       // istanbul ignore if: too hard to replicate
       if (isParentUpdate) {
-        const res: UpdateLockedResult = { status: 'update-failed', files: {} };
+        const res: UpdateLockedResult = { status, files: {} };
         res.files[packageFile] = packageFileContent;
         res.files[lockFile] = lockFileContent;
         return res;
       }
-      return { status: 'update-failed' };
+      return { status };
     }
     logger.debug(
       `Found matching dependencies with length ${lockedDeps.length}`

lib/manager/types.ts

@@ -231,7 +231,7 @@ export interface UpdateLockedConfig {
 }
 
 export interface UpdateLockedResult {
-  status: 'updated' | 'update-failed';
+  status: 'updated' | 'already-updated' | 'update-failed';
   files?: Record<string, string>;
 }
 

lib/workers/branch/get-updated.ts

@@ -74,23 +74,22 @@ export async function getUpdatedPackageFiles(
         });
       }
       const updateLockedDependency = get(manager, 'updateLockedDependency');
-      const { files } = await updateLockedDependency({
+      const { status, files } = await updateLockedDependency({
         ...upgrade,
         packageFileContent,
         lockFileContent,
       });
-      if (files) {
-        if (reuseExistingBranch) {
-          // This ensure it's always 1 commit from the bot
+      if (reuseExistingBranch && status !== 'already-updated') {
         logger.debug(
-            { lockFile, depName },
-            'Need to update file(s) so will rebase first'
+          { lockFile, depName, status },
+          'Need to retry branch as it is not already up-to-date'
         );
         return getUpdatedPackageFiles({
           ...config,
           reuseExistingBranch: false,
         });
       }
+      if (files) {
         updatedFileContents = { ...updatedFileContents, ...files };
       }
     } else {