chore: finish upgrade

Author: Kent C. Dodds

.size-snapshot.json

@@ -1,7 +1,7 @@
 {
   "dist/dom-testing-library.umd.js": {
-    "bundled": 108659,
-    "minified": 48227,
-    "gzipped": 14779
+    "bundled": 108613,
+    "minified": 48203,
+    "gzipped": 14777
   }
 }

package.json

@@ -53,7 +53,8 @@
     "extends": "./node_modules/kcd-scripts/eslint.js",
     "rules": {
       "import/prefer-default-export": "off",
-      "import/no-unassigned-import": "off"
+      "import/no-unassigned-import": "off",
+      "import/no-useless-path-segments": "off"
     }
   },
   "eslintIgnore": [

src/events.js

@@ -321,7 +321,7 @@ Object.entries(eventMap).forEach(([key, {EventType = Event, defaultInit}]) => {
   const eventName = key.toLowerCase()
 
   fireEvent[key] = (node, init) => {
-    const eventInit = Object.assign({}, defaultInit, init)
+    const eventInit = {...defaultInit, ...init}
     const event = new EventType(eventName, eventInit)
     return fireEvent(node, event)
   }

src/pretty-dom.js

@@ -7,17 +7,12 @@ function prettyDOM(htmlElement, maxLength, options) {
     htmlElement = htmlElement.documentElement
   }
 
-  const debugContent = prettyFormat(
-    htmlElement,
-    Object.assign(
-      {
-        plugins: [DOMElement, DOMCollection],
-        printFunctionName: false,
-        highlight: true,
-      },
-      options,
-    ),
-  )
+  const debugContent = prettyFormat(htmlElement, {
+    plugins: [DOMElement, DOMCollection],
+    printFunctionName: false,
+    highlight: true,
+    ...options,
+  })
   return maxLength !== undefined && htmlElement.outerHTML.length > maxLength
     ? `${debugContent.slice(0, maxLength)}...`
     : debugContent