From d64adddcf99a09c6c7df05eea3f4233079da83dd Mon Sep 17 00:00:00 2001
From: VincentBel <buaazqh@gmail.com>
Date: Mon, 4 May 2020 09:33:06 +0800
Subject: [PATCH] chore: require Node.js >= 10

BREAKING CHANGE: Require Node.js >= 10
---
 .travis.yml  | 5 +++--
 index.js     | 6 +++---
 package.json | 3 +++
 3 files changed, 9 insertions(+), 5 deletions(-)

diff --git a/.travis.yml b/.travis.yml
index 631fd02..5f554da 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -6,8 +6,9 @@ cache:
 notifications:
   email: false
 node_js:
-  - '6'
-  - '8'
+  - '10'
+  - '12'
+  - '14'
 before_install:
   - curl -o- -L https://yarnpkg.com/install.sh | bash
   - export PATH="$HOME/.yarn/bin:$PATH"
diff --git a/index.js b/index.js
index 42da50a..1bcbde9 100644
--- a/index.js
+++ b/index.js
@@ -1,8 +1,8 @@
 'use strict'
 
-var visit = require('unist-util-visit')
-var is = require('unist-util-is')
-var pangu = require('pangu')
+const visit = require('unist-util-visit')
+const is = require('unist-util-is')
+const pangu = require('pangu')
 
 // List of Markdown AST: <https://github.com/syntax-tree/mdast>
 // AST Explorer: <https://astexplorer.net/#/gist/7a794a8fc43b2e75e27024c85fb77aad/0934495eb735dffdf739dc7943f7848940070f8e>
diff --git a/package.json b/package.json
index 0dc56cb..9b6fb76 100644
--- a/package.json
+++ b/package.json
@@ -50,5 +50,8 @@
       "src/**/*.js",
       "index.js"
     ]
+  },
+  "engines": {
+    "node": ">=10"
   }
 }