store a reference for provider's option in the instance

Author: sushichan044

src/types.ts

@@ -88,6 +88,7 @@ export interface ProviderDefinition<T = unknown> {
 
 export interface Provider<TName extends string = string> {
   _name: TName
+  _options: unknown
   (ctx: ProviderContext): Awaitable<InitializedProvider | undefined>
 }
 

src/utils.ts

@@ -1,7 +1,7 @@
 import type { ProviderDefinition, ProviderFactory } from './types'
 
 export function defineFontProvider<TName extends string, TOptions = unknown>(name: TName, provider: ProviderDefinition<TOptions>): ProviderFactory<TName, TOptions> {
-  return ((options: TOptions) => Object.assign(provider.bind(null, options || {} as TOptions), { _name: name })) as ProviderFactory<TName, TOptions>
+  return ((options: TOptions) => Object.assign(provider.bind(null, options || {} as TOptions), { _name: name, _options: options })) as ProviderFactory<TName, TOptions>
 }
 
 export function prepareWeights({