Remove xtend dependency

Author: wooorm

lib/index.js

@@ -2,7 +2,6 @@
 
 module.exports = toHast
 
-var xtend = require('xtend')
 var u = require('unist-builder')
 var visit = require('unist-util-visit')
 var position = require('unist-util-position')
@@ -25,7 +24,7 @@ function factory(tree, options) {
   h.footnoteById = footnoteById
   h.footnoteOrder = []
   h.augment = augment
-  h.handlers = xtend(handlers, settings.handlers || {})
+  h.handlers = Object.assign({}, handlers, settings.handlers)
 
   visit(tree, 'footnoteDefinition', onfootnotedefinition)
 
@@ -45,7 +44,7 @@ function factory(tree, options) {
       }
 
       if (right.type === 'element' && data.hProperties) {
-        right.properties = xtend(right.properties, data.hProperties)
+        right.properties = Object.assign({}, right.properties, data.hProperties)
       }
 
       if (right.children && data.hChildren) {

package.json

@@ -31,8 +31,7 @@
     "unist-builder": "^1.0.1",
     "unist-util-generated": "^1.1.0",
     "unist-util-position": "^3.0.0",
-    "unist-util-visit": "^1.1.0",
-    "xtend": "^4.0.1"
+    "unist-util-visit": "^1.1.0"
   },
   "devDependencies": {
     "browserify": "^16.0.0",