swap to deepmerge package

cspell.json

@@ -1,4 +1,15 @@
 {
-  "ignorePaths": ["**/node_modules/**", "**/third-party/**"],
-  "words": ["appload", "domcontentloaded", "networkidle", "outfile", "tada", "upvote"]
+  "ignorePaths": [
+    "**/node_modules/**",
+    "**/third-party/**"
+  ],
+  "words": [
+    "appload",
+    "deepmerge",
+    "domcontentloaded",
+    "networkidle",
+    "outfile",
+    "tada",
+    "upvote"
+  ]
 }

package.json

@@ -53,7 +53,6 @@
     "@stencil/core": "^4.13.0",
     "@types/eslint": "^8.56.2",
     "@types/jest": "^29.5.12",
-    "@types/lodash.merge": "^4.6.9",
     "@types/node": "^20.11.19",
     "@typescript-eslint/eslint-plugin": "^7.0.2",
     "@typescript-eslint/parser": "^7.0.2",
@@ -72,7 +71,7 @@
   },
   "prettier": "@ionic/prettier-config",
   "dependencies": {
-    "glob": "^10.3.10",
-    "lodash.merge": "^4.6.2"
+    "deepmerge": "^4.3.1",
+    "glob": "^10.3.10"
   }
 }

src/create-config.ts

@@ -1,5 +1,5 @@
 import { PlaywrightTestConfig } from '@playwright/test';
-import merge from 'lodash.merge';
+import merge from 'deepmerge';
 
 import { loadConfigMeta } from './load-config-meta';
 import { ProcessConstants } from './process-constants';
@@ -20,7 +20,9 @@ type DeepPartial<T> = T extends object
  * @param overrides Values to override in the default config. Any Playwright config option can be overridden.
  * @returns A {@link PlaywrightTestConfig} object
  */
-export const createConfig = async (overrides?: DeepPartial<PlaywrightTestConfig>): Promise<PlaywrightTestConfig> => {
+export const createConfig = async (
+  overrides: DeepPartial<PlaywrightTestConfig> = {},
+): Promise<PlaywrightTestConfig> => {
   const { webServerUrl, baseURL, stencilEntryPath, stencilNamespace } = await loadConfigMeta();
 
   // Set the Stencil namespace and entry path as environment variables so we can use them when constructing
@@ -29,7 +31,7 @@ export const createConfig = async (overrides?: DeepPartial<PlaywrightTestConfig>
   process.env[ProcessConstants.STENCIL_NAMESPACE] = stencilNamespace;
   process.env[ProcessConstants.STENCIL_ENTRY_PATH] = stencilEntryPath;
 
-  return merge(
+  return merge<DeepPartial<PlaywrightTestConfig>>(
     {
       testMatch: '*.e2e.ts',
       use: {