Update dev-dependencies

Author: wooorm

package.json

@@ -29,16 +29,16 @@
     "browserify": "^16.0.0",
     "is-hidden": "^1.1.0",
     "not": "^0.1.0",
-    "nyc": "^12.0.0",
+    "nyc": "^13.0.0",
     "parse5": "^5.0.0",
     "prettier": "^1.13.5",
-    "remark-cli": "^5.0.0",
+    "remark-cli": "^6.0.0",
     "remark-preset-wooorm": "^4.0.0",
     "tape": "^4.0.0",
     "tinyify": "^2.4.3",
     "to-vfile": "^5.0.0",
     "unist-util-visit": "^1.1.3",
-    "xo": "^0.21.0"
+    "xo": "^0.23.0"
   },
   "scripts": {
     "format": "remark . -qfo && prettier --write '**/*.js' && xo --fix",

test/index.js

@@ -380,7 +380,7 @@ test('fixtures', function(t) {
 
     try {
       expected = JSON.parse(fs.readFileSync(options.out))
-    } catch (err) {
+    } catch (error) {
       /* New fixture. */
       fs.writeFileSync(options.out, JSON.stringify(actual, 0, 2) + '\n')
       return
@@ -449,8 +449,8 @@ function cleaner(node) {
 
 function log(label, actual, expected) {
   try {
-    assert.deepEqual(actual, expected, label)
-  } catch (err) {
+    assert.deepStrictEqual(actual, expected, label)
+  } catch (error) {
     console.log('actual:%s: ', label)
     console.dir(actual, {depth: null})
     console.log('expected:%s: ', label)