From d6051743002d815c4a22e5f14c28603236187748 Mon Sep 17 00:00:00 2001
From: Yuki Hattori <yukihattori1116@gmail.com>
Date: Mon, 11 Aug 2025 00:42:18 +0900
Subject: [PATCH 1/2] Drop Node.js 18 support

---
 .circleci/config.yml | 12 ------------
 babel.config.js      |  2 +-
 jest.setup.js        |  8 --------
 package.json         |  2 +-
 4 files changed, 2 insertions(+), 22 deletions(-)

diff --git a/.circleci/config.yml b/.circleci/config.yml
index e718250..6a7648e 100644
--- a/.circleci/config.yml
+++ b/.circleci/config.yml
@@ -93,15 +93,6 @@ jobs:
     steps:
       - audit
 
-  test-node18:
-    executor:
-      name: node
-      version: '18.20'
-    steps:
-      - prepare:
-          force: true
-      - test
-
   test-node20:
     executor:
       name: node
@@ -133,9 +124,6 @@ workflows:
   test:
     jobs:
       - audit
-      - test-node18:
-          requires:
-            - audit
       - test-node20:
           requires:
             - audit
diff --git a/babel.config.js b/babel.config.js
index 9841ff6..950b939 100644
--- a/babel.config.js
+++ b/babel.config.js
@@ -1,5 +1,5 @@
 module.exports = {
   presets: [
-    ['@babel/preset-env', { targets: { node: '18' }, shippedProposals: true }],
+    ['@babel/preset-env', { targets: { node: '20' }, shippedProposals: true }],
   ],
 }
diff --git a/jest.setup.js b/jest.setup.js
index bb8f2cc..af8d02d 100644
--- a/jest.setup.js
+++ b/jest.setup.js
@@ -1,9 +1 @@
 global.context = describe
-
-// https://github.com/nodejs/undici/issues/4374
-if (process.versions.node.startsWith('18.')) {
-  const { File, Blob } = require('buffer')
-
-  global.File = File
-  global.Blob = Blob
-}
diff --git a/package.json b/package.json
index bd4a1ff..cb5d3fc 100644
--- a/package.json
+++ b/package.json
@@ -27,7 +27,7 @@
     "url": "https://github.com/marp-team/marpit"
   },
   "engines": {
-    "node": ">=18"
+    "node": ">=20"
   },
   "main": "lib/index.js",
   "types": "index.d.ts",

From 6198f1530415a87f5b8e47e1aad701b459536b7f Mon Sep 17 00:00:00 2001
From: Yuki Hattori <yukihattori1116@gmail.com>
Date: Mon, 11 Aug 2025 00:47:16 +0900
Subject: [PATCH 2/2] Bump development Node.js to v22.18.0

---
 .circleci/config.yml | 4 ++--
 .nvmrc               | 2 +-
 2 files changed, 3 insertions(+), 3 deletions(-)

diff --git a/.circleci/config.yml b/.circleci/config.yml
index 6a7648e..2cb21b4 100644
--- a/.circleci/config.yml
+++ b/.circleci/config.yml
@@ -105,7 +105,7 @@ jobs:
   test-node22:
     executor:
       name: node
-      version: '22.15.0' # Specify LTS version for development
+      version: '22.18.0' # Specify LTS version for development
     steps:
       - prepare
       - lint
@@ -114,7 +114,7 @@ jobs:
   test-node24:
     executor:
       name: node
-      version: '24.0'
+      version: '24.5'
     steps:
       - prepare
       - lint
diff --git a/.nvmrc b/.nvmrc
index b8ffd70..91d5f6f 100644
--- a/.nvmrc
+++ b/.nvmrc
@@ -1 +1 @@
-22.15.0
+22.18.0