Optimise dedupe command

Author: joverbye-atlassian

.yarn/versions/5c3d25bd.yml

@@ -0,0 +1,34 @@
+releases:
+  "@yarnpkg/builder": patch
+  "@yarnpkg/cli": patch
+  "@yarnpkg/core": patch
+  "@yarnpkg/doctor": patch
+  "@yarnpkg/extensions": patch
+  "@yarnpkg/nm": patch
+  "@yarnpkg/plugin-catalog": patch
+  "@yarnpkg/plugin-compat": patch
+  "@yarnpkg/plugin-constraints": patch
+  "@yarnpkg/plugin-dlx": patch
+  "@yarnpkg/plugin-essentials": patch
+  "@yarnpkg/plugin-exec": patch
+  "@yarnpkg/plugin-file": patch
+  "@yarnpkg/plugin-git": patch
+  "@yarnpkg/plugin-github": patch
+  "@yarnpkg/plugin-http": patch
+  "@yarnpkg/plugin-init": patch
+  "@yarnpkg/plugin-interactive-tools": patch
+  "@yarnpkg/plugin-jsr": patch
+  "@yarnpkg/plugin-link": patch
+  "@yarnpkg/plugin-nm": patch
+  "@yarnpkg/plugin-npm": patch
+  "@yarnpkg/plugin-npm-cli": patch
+  "@yarnpkg/plugin-pack": patch
+  "@yarnpkg/plugin-patch": patch
+  "@yarnpkg/plugin-pnp": patch
+  "@yarnpkg/plugin-pnpm": patch
+  "@yarnpkg/plugin-stage": patch
+  "@yarnpkg/plugin-typescript": patch
+  "@yarnpkg/plugin-version": patch
+  "@yarnpkg/plugin-workspace-tools": patch
+  "@yarnpkg/pnpify": patch
+  "@yarnpkg/sdks": patch

packages/plugin-essentials/sources/commands/dedupe.ts

@@ -116,16 +116,18 @@ export default class DedupeCommand extends BaseCommand {
     if (dedupeReport.hasErrors())
       return dedupeReport.exitCode();
 
-    if (this.check) {
+    if (this.check)
       return dedupedPackageCount ? 1 : 0;
-    } else {
-      return await project.installWithNewReport({
-        json: this.json,
-        stdout: this.context.stdout,
-      }, {
-        cache,
-        mode: this.mode,
-      });
-    }
+
+    if (dedupedPackageCount === 0)
+      return 0;
+
+    return await project.installWithNewReport({
+      json: this.json,
+      stdout: this.context.stdout,
+    }, {
+      cache,
+      mode: this.mode,
+    });
   }
 }