chore: replace mkdirp with native fs.mkdirSync

Node.js has supported `fs.mkdirSync(path, { recursive: true })`
since v10.12.0. This removes the need for the mkdirp package.

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

Author: Sarah Dayan

packages/shipjs/package.json

@@ -47,7 +47,6 @@
     "ejs": "^3.1.10",
     "globby": "^14.1.0",
     "inquirer": "^12.5.0",
-    "mkdirp": "^3.0.1",
     "open": "^10.1.2",
     "prettier": "^3.5.3",
     "serialize-javascript": "^6.0.2",

packages/shipjs/src/step/setup/CI/addCircleCIConfig.js

@@ -2,7 +2,6 @@ import fs from 'fs';
 import path from 'path';
 
 import ejs from 'ejs';
-import { mkdirpSync } from 'mkdirp';
 import { getGitConfig } from 'shipjs-lib';
 
 import { info, warning } from '../../../color.js';
@@ -41,7 +40,7 @@ export default ({ baseBranch, schedulePrepare, cronExpr, dir, dryRun }) =>
         print(`.circleci/config.yml`);
         print(content);
       } else {
-        mkdirpSync(path.dirname(filePath));
+        fs.mkdirSync(path.dirname(filePath), { recursive: true });
         fs.writeFileSync(filePath, content);
       }
       return () => {

packages/shipjs/src/step/setup/CI/addGitHubActions.js

@@ -2,7 +2,6 @@ import fs from 'fs';
 import path from 'path';
 
 import ejs from 'ejs';
-import { mkdirpSync } from 'mkdirp';
 
 import { info, warning } from '../../../color.js';
 import { print } from '../../../util/index.js';
@@ -71,7 +70,7 @@ function createGitHubAction({ content, actionPath, dir, dryRun }) {
     print(actionPath);
     print(content);
   } else {
-    mkdirpSync(path.dirname(filePath));
+    fs.mkdirSync(path.dirname(filePath), { recursive: true });
     fs.writeFileSync(filePath, content);
   }
   return () => {

yarn.lock

@@ -6308,11 +6308,6 @@ mkdirp@^1.0.3:
   resolved "https://registry.yarnpkg.com/mkdirp/-/mkdirp-1.0.4.tgz#3eb5ed62622756d79a5f0e2a221dfebad75c2f7e"
   integrity sha512-vVqVZQyf3WLx2Shd0qJ9xuvqgAyKPLAiqITEtqW0oIUjzo3PePDd6fW9iFz30ef7Ysp/oiWqbhszeGWW2T6Gzw==
 
-mkdirp@^3.0.1:
-  version "3.0.1"
-  resolved "https://registry.yarnpkg.com/mkdirp/-/mkdirp-3.0.1.tgz#e44e4c5607fb279c168241713cc6e0fea9adcb50"
-  integrity sha512-+NsyUUAZDmo6YVHzL/stxSu3t9YS1iljliy3BSDrXJ/dkn1KYdmtZODGGjLcc9XLgVVpH4KshHB8XmZgMhaBXg==
-
 modify-values@^1.0.1:
   version "1.0.1"
   resolved "https://registry.yarnpkg.com/modify-values/-/modify-values-1.0.1.tgz#b3939fa605546474e3e3e3c63d64bd43b4ee6022"