chore: fix fixed dist output, fixed tests

package.json

@@ -118,7 +118,6 @@
     "url": "https://github.com/niftylettuce/email-regex-safe"
   },
   "scripts": {
-    "ava": "cross-env NODE_ENV=test ava",
     "browserify": "browserify src/index.js -o dist/email-regex-safe.js -s emailRegexSafe -g [ babelify --configFile ./.dist.babelrc ]",
     "build": "npm run build:clean && npm run build:lib && npm run build:dist",
     "build:clean": "rimraf lib dist",
@@ -131,10 +130,9 @@
     "lint:md": "remark . -qfo",
     "lint:pkg": "fixpack",
     "minify": "cross-env NODE_ENV=production browserify src/index.js -o dist/email-regex-safe.min.js -s emailRegexSafe -g [ babelify --configFile ./.dist.babelrc ] -p tinyify",
-    "nyc": "cross-env NODE_ENV=test nyc ava",
     "prepare": "husky install",
     "pretest": "npm run build && npm run lint",
-    "test": "npm run test-coverage"
+    "test": "cross-env NODE_ENV=test nyc ava"
   },
   "unpkg": "dist/email-regex-safe.min.js"
 }

src/index.js

@@ -8,18 +8,21 @@ const ipv4 = ipRegex.v4().source;
 const ipv6 = ipRegex.v6().source;
 
 module.exports = (options) => {
-  options = {
-    exact: false,
-    strict: false,
-    gmail: true,
-    utf8: true,
-    localhost: true,
-    ipv4: true,
-    ipv6: false,
-    tlds,
-    returnString: false,
-    ...options
-  };
+  // eslint-disable-next-line prefer-object-spread
+  options = Object.assign(
+    {
+      exact: false,
+      strict: false,
+      gmail: true,
+      utf8: true,
+      localhost: true,
+      ipv4: true,
+      ipv6: false,
+      tlds,
+      returnString: false
+    },
+    options
+  );
 
   const host = '(?:(?:[a-z\\u00a1-\\uffff0-9][-_]*)*[a-z\\u00a1-\\uffff0-9]+)';
   const domain =