From ff76a36104d2b9c34079b7f1c1297cc60e75750d Mon Sep 17 00:00:00 2001
From: fisker <lionkay@gmail.com>
Date: Wed, 10 Jun 2026 20:05:26 +0800
Subject: [PATCH 1/4] Allow same version

---
 .github/workflows/ci.yml |  2 +-
 src/execute-command.ts   | 20 +++++++++++++++-----
 src/run-prettier.ts      |  4 ++++
 3 files changed, 20 insertions(+), 6 deletions(-)

diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 5622e4b..6ac2417 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -44,4 +44,4 @@ jobs:
           key: v2-${{ hashFiles('repositories.json') }}
       - uses: actions/setup-node@v6
       - run: yarn
-      - run: yarn execute "RUN https://pkg.pr.new/prettier/prettier@main VS latest"
+      - run: yarn execute "RUN https://pkg.pr.new/prettier/prettier@main VS https://pkg.pr.new/prettier/prettier@main"
diff --git a/src/execute-command.ts b/src/execute-command.ts
index 38fab4f..82035ae 100644
--- a/src/execute-command.ts
+++ b/src/execute-command.ts
@@ -13,14 +13,24 @@ export type ExecuteCommandResult = Awaited<ReturnType<typeof executeCommand>>;
 
 export async function executeCommand(commandString: string) {
   const { alternative, original, repositories } = parseCommand(commandString);
+  const isSame = alternative.raw === original.raw;
+
   const directory = await createTemporaryDirectory();
 
   // Install Prettier
-  const [alternativePrettier, originalPrettier] = await Promise.all(
-    [original, alternative].map((version) =>
-      installPrettier(version, { cwd: directory }),
-    ),
-  );
+  let alternativePrettier;
+  let originalPrettier;
+  if (isSame) {
+    alternativePrettier = originalPrettier = await installPrettier(original, {
+      cwd: directory,
+    });
+  } else {
+    [alternativePrettier, originalPrettier] = await Promise.all(
+      [original, alternative].map((version) =>
+        installPrettier(version, { cwd: directory }),
+      ),
+    );
+  }
 
   await logger.brief(
     `Running Prettier on ${repositories.length} repositories ...`,
diff --git a/src/run-prettier.ts b/src/run-prettier.ts
index 0996c00..9b55ec8 100644
--- a/src/run-prettier.ts
+++ b/src/run-prettier.ts
@@ -95,6 +95,10 @@ export async function runPrettier(
     reset,
   });
 
+  if (alternative === original) {
+    return "";
+  }
+
   await runPrettierWithVersion({
     cwd: directory,
     prettier: alternative,

From e3236382d6d3cec956252f4f92f7720f1e160455 Mon Sep 17 00:00:00 2001
From: fisker <lionkay@gmail.com>
Date: Wed, 10 Jun 2026 20:08:32 +0800
Subject: [PATCH 2/4] Minor tweak

---
 src/execute-command.ts | 18 +++++-------------
 1 file changed, 5 insertions(+), 13 deletions(-)

diff --git a/src/execute-command.ts b/src/execute-command.ts
index 82035ae..9517e94 100644
--- a/src/execute-command.ts
+++ b/src/execute-command.ts
@@ -18,19 +18,11 @@ export async function executeCommand(commandString: string) {
   const directory = await createTemporaryDirectory();
 
   // Install Prettier
-  let alternativePrettier;
-  let originalPrettier;
-  if (isSame) {
-    alternativePrettier = originalPrettier = await installPrettier(original, {
-      cwd: directory,
-    });
-  } else {
-    [alternativePrettier, originalPrettier] = await Promise.all(
-      [original, alternative].map((version) =>
-        installPrettier(version, { cwd: directory }),
-      ),
-    );
-  }
+  const promises = [installPrettier(original, { cwd: directory })];
+  promises.push(
+    isSame ? promises[0] : installPrettier(alternative, { cwd: directory }),
+  );
+  const [alternativePrettier, originalPrettier] = await Promise.all(promises);
 
   await logger.brief(
     `Running Prettier on ${repositories.length} repositories ...`,

From ba1ffc45a1a65e1d1911a518635647ef41848375 Mon Sep 17 00:00:00 2001
From: fisker <lionkay@gmail.com>
Date: Wed, 10 Jun 2026 20:09:49 +0800
Subject: [PATCH 3/4] Fix

---
 src/execute-command.ts | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/src/execute-command.ts b/src/execute-command.ts
index 9517e94..afec375 100644
--- a/src/execute-command.ts
+++ b/src/execute-command.ts
@@ -18,9 +18,9 @@ export async function executeCommand(commandString: string) {
   const directory = await createTemporaryDirectory();
 
   // Install Prettier
-  const promises = [installPrettier(original, { cwd: directory })];
+  const promises = [installPrettier(alternative, { cwd: directory })];
   promises.push(
-    isSame ? promises[0] : installPrettier(alternative, { cwd: directory }),
+    isSame ? promises[0] : installPrettier(original, { cwd: directory }),
   );
   const [alternativePrettier, originalPrettier] = await Promise.all(promises);
 

From 63ce6b185315c89a4347182fc9d8a5e60c8418fe Mon Sep 17 00:00:00 2001
From: fisker <lionkay@gmail.com>
Date: Wed, 10 Jun 2026 20:10:57 +0800
Subject: [PATCH 4/4] timing

---
 src/run-prettier.ts | 1 +
 1 file changed, 1 insertion(+)

diff --git a/src/run-prettier.ts b/src/run-prettier.ts
index 9b55ec8..01ffa2f 100644
--- a/src/run-prettier.ts
+++ b/src/run-prettier.ts
@@ -96,6 +96,7 @@ export async function runPrettier(
   });
 
   if (alternative === original) {
+    timing.end();
     return "";
   }