fix(workbox): deepClone options to avoid cross-build mutation

fixing issue with nuxt static build that initializes module twice

Author: pi0

package.json

@@ -19,6 +19,7 @@
     "test": "yarn lint && jest"
   },
   "dependencies": {
+    "clone-deep": "^4.0.1",
     "defu": "^3.2.2",
     "execa": "^5.0.0",
     "fs-extra": "^9.0.1",

src/workbox/options.ts

@@ -1,10 +1,11 @@
 import { resolve } from 'path'
+import cloneDeep from 'clone-deep'
 import { joinUrl, getRouteParams, startCase, randomString, PKG_DIR } from '../utils'
 import type { WorkboxOptions, PWAContext } from '../../types'
 import { defaults } from './defaults'
 
 export function getOptions (nuxt, pwa: PWAContext): WorkboxOptions {
-  const options: WorkboxOptions = { ...defaults, ...pwa.workbox }
+  const options: WorkboxOptions = cloneDeep({ ...defaults, ...pwa.workbox })
 
   // enabled
   if (options.enabled === undefined) {