fix: catch error when options is null

got the error when set `{ settings: { 'import-x/resolver': 'oxc' } }`

Author: 9romise

src/index.ts

@@ -3,7 +3,7 @@ import { ResolverFactory } from 'oxc-resolver'
 import { normalizeOptions } from './nomalizeOptions'
 
 let resolver: ResolverFactory | undefined
-export function resolve(source: string, file: string, options: NapiResolveOptions = {}): { found: boolean, path?: string } {
+export function resolve(source: string, file: string, options: NapiResolveOptions | null = {}): { found: boolean, path?: string } {
   if (!resolver) {
     options = normalizeOptions(options)
     resolver = new ResolverFactory(options)

src/nomalizeOptions.ts

@@ -66,8 +66,8 @@ const defaultOptions: NapiResolveOptions = {
   roots: [cwd()],
 }
 
-export function normalizeOptions(options: NapiResolveOptions = {}): NapiResolveOptions {
-  if (!options.tsconfig) {
+export function normalizeOptions(options: NapiResolveOptions | null = {}): NapiResolveOptions {
+  if (!options?.tsconfig) {
     defaultOptions.tsconfig = {
       configFile: './tsconfig.json',
       references: 'auto',