ts: enable strict null checks

src/index.ts

@@ -23,7 +23,7 @@ import { initAuth, hydrateApi } from './utils'
 import { FeathersVuex } from './vue-plugin/vue-plugin'
 const events = ['created', 'patched', 'updated', 'removed']
 
-const defaults: FeathersVuexOptions = {
+const defaults: Required<FeathersVuexOptions> = {
   autoRemove: false, // Automatically remove records missing from responses (only use with feathers-rest)
   addOnUpsert: false, // Add new records pushed by 'updated/patched' socketio events into store, instead of discarding them
   enableEvents: true, // Listens to socket.io events when available
@@ -64,7 +64,7 @@ export default function feathersVuex(feathers, options: FeathersVuexOptions) {
 
   addClient({ client: feathers, serverAlias: options.serverAlias })
 
-  const BaseModel = makeBaseModel(options)
+  const BaseModel = makeBaseModel(options as Required<FeathersVuexOptions>)
   const makeServicePlugin = prepareMakeServicePlugin(options)
   const makeAuthPlugin = prepareMakeAuthPlugin(feathers, options)
 

src/service-module/make-base-model.ts

@@ -34,7 +34,7 @@ const defaultOptions = {
  *
  * @param options
  */
-export default function makeBaseModel(options: FeathersVuexOptions) {
+export default function makeBaseModel(options: Required<FeathersVuexOptions>) {
   const addModel = prepareAddModel(options)
   const { serverAlias } = options
 

tsconfig.json

@@ -6,7 +6,8 @@
     "moduleResolution": "node",
     "target": "es6",
     "sourceMap": false,
-    "declaration": true
+    "declaration": true,
+    "strictNullChecks": true
   },
   "include": ["src/**/*"],
   "exclude": ["node_modules", "**/*.test.js"]