UPGRADES

package.json

@@ -42,27 +42,27 @@
     "global": "^4.4.0",
     "is-function": "^1.0.1",
     "is-regex": "^1.0.4",
-    "is-symbol": "^1.0.2",
+    "is-symbol": "^1.0.3",
     "isobject": "^4.0.0",
     "lodash": "^4.17.15",
     "memoizerific": "^1.11.3"
   },
   "devDependencies": {
-    "@babel/cli": "^7.6.2",
-    "@babel/core": "^7.6.2",
-    "@babel/preset-env": "^7.6.2",
-    "@babel/preset-typescript": "^7.6.0",
-    "@storybook/eslint-config-storybook": "^1.0.0",
-    "@types/jest": "^24.0.18",
-    "@types/lodash": "^4.14.141",
+    "@babel/cli": "^7.7.0",
+    "@babel/core": "^7.7.2",
+    "@babel/preset-env": "^7.7.1",
+    "@babel/preset-typescript": "^7.7.2",
+    "@storybook/eslint-config-storybook": "^2.1.0",
+    "@types/jest": "^24.0.23",
+    "@types/lodash": "^4.14.149",
     "babel-core": "7.0.0-bridge.0",
     "babel-jest": "^24.9.0",
     "common-tags": "^1.8.0",
-    "eslint": "^5.0.0",
+    "eslint": "^6.6.0",
     "jest": "^24.9.0",
-    "prettier": "^1.18.2",
+    "prettier": "^1.19.1",
     "regenerator-runtime": "^0.13.3",
-    "typescript": "^3.6.3"
+    "typescript": "^3.7.2"
   },
   "publishConfig": {
     "access": "public"

src/index.ts

@@ -314,7 +314,7 @@ const defaultOptions: Options = {
 };
 
 export const stringify = (data: any, options: Partial<Options> = {}) => {
-  const mergedOptions: Options = Object.assign({}, defaultOptions, options);
+  const mergedOptions: Options = { ...defaultOptions, ...options };
   return JSON.stringify(data, replacer(mergedOptions), options.space);
 };