fix(oxfmt/migrate-prettier): Set experimentalSortPackagejson: false by default

apps/oxfmt/src-js/cli/migration/migrate-prettier.ts

@@ -59,13 +59,17 @@ export async function runMigratePrettier() {
   // NOTE: Some options unsupported by Oxfmt may still be valid when invoking Prettier.
   // However, to avoid inconsistency, we do not enable options that affect Oxfmt.
   const oxfmtrc = await createBlankOxfmtrcFile(cwd);
+
+  let hasSortPackageJsonPlugin = false;
   for (const [key, value] of Object.entries(prettierConfig ?? {})) {
     // Handle plugins - check for prettier-plugin-tailwindcss and warn about others
     if (key === "plugins" && Array.isArray(value)) {
       for (const plugin of (value as Options["plugins"])!) {
         if (plugin === "prettier-plugin-tailwindcss") {
           // Migrate `prettier-plugin-tailwindcss` options
           migrateTailwindOptions(prettierConfig!, oxfmtrc);
+        } else if (plugin === "prettier-plugin-packagejson") {
+          hasSortPackageJsonPlugin = true;
         } else if (typeof plugin === "string") {
           console.error(`  - plugins: "${plugin}" is not supported, skipping...`);
         } else {
@@ -103,6 +107,14 @@ export async function runMigratePrettier() {
     );
     oxfmtrc.printWidth = 80;
   }
+  // `experimentalSortPackageJson` is enabled by default in Oxfmt, but Prettier does not have this.
+  // Only enable if `prettier-plugin-packagejson` is used.
+  if (hasSortPackageJsonPlugin) {
+    oxfmtrc.experimentalSortPackageJson = {};
+    console.error(`  - Migrated "prettier-plugin-packagejson" to "experimentalSortPackageJson"`);
+  } else {
+    oxfmtrc.experimentalSortPackageJson = false;
+  }
   // `embeddedLanguageFormatting` is not fully supported for JS-in-XXX yet.
   if (oxfmtrc.embeddedLanguageFormatting !== "off") {
     console.error(`  - "embeddedLanguageFormatting" in JS/TS files is not fully supported yet`);

apps/oxfmt/test/cli/migrate_prettier/migrate_prettier.test.ts

@@ -213,4 +213,53 @@ node_modules
       await fs.rm(tempDir, { recursive: true, force: true });
     }
   });
+
+  it("should disable experimentalSortPackageJson by default", async () => {
+    const tempDir = await fs.mkdtemp(join(tmpdir(), "oxfmt-migrate-test"));
+
+    try {
+      // Create prettier config without package.json sorting plugin
+      await fs.writeFile(
+        join(tempDir, ".prettierrc"),
+        JSON.stringify({
+          semi: false,
+        }),
+      );
+
+      const result = await runCli(tempDir, ["--migrate", "prettier"]);
+      expect(result.exitCode).toBe(0);
+
+      const content = await fs.readFile(join(tempDir, ".oxfmtrc.json"), "utf8");
+      const oxfmtrc = JSON.parse(content);
+
+      // Prettier does not have package.json sorting by default
+      expect(oxfmtrc.experimentalSortPackageJson).toBe(false);
+    } finally {
+      await fs.rm(tempDir, { recursive: true, force: true });
+    }
+  });
+
+  it("should enable experimentalSortPackageJson when prettier-plugin-packagejson is used", async () => {
+    const tempDir = await fs.mkdtemp(join(tmpdir(), "oxfmt-migrate-test"));
+
+    try {
+      // Create prettier config with package.json sorting plugin
+      await fs.writeFile(
+        join(tempDir, ".prettierrc"),
+        JSON.stringify({
+          plugins: ["prettier-plugin-packagejson"],
+        }),
+      );
+
+      const result = await runCli(tempDir, ["--migrate", "prettier"]);
+      expect(result.exitCode).toBe(0);
+
+      const content = await fs.readFile(join(tempDir, ".oxfmtrc.json"), "utf8");
+      const oxfmtrc = JSON.parse(content);
+
+      expect(oxfmtrc.experimentalSortPackageJson).toBeTruthy();
+    } finally {
+      await fs.rm(tempDir, { recursive: true, force: true });
+    }
+  });
 });