ref: reuse inferParserType, rm unnecessary serializer variants

Author: MartinCura

packages/nuqs/src/serializer.ts

@@ -1,19 +1,10 @@
-import type { Options } from './defs'
-import type { ParserBuilder } from './parsers'
+import type { Nullable, Options } from './defs'
+import type { inferParserType, ParserBuilder } from './parsers'
 import { renderQueryString } from './url-encoding'
 
 type Base = string | URLSearchParams | URL
 type ParserWithOptionalDefault<T> = ParserBuilder<T> & { defaultValue?: T }
 
-type inferSingleSerializerType<Parser> =
-  Parser extends ParserBuilder<infer Value> ? Value | null : never
-
-export type inferSerializerRecordType<
-  Map extends Record<string, ParserBuilder<any>>
-> = {
-  [Key in keyof Map]: inferSingleSerializerType<Map[Key]>
-}
-
 export function createSerializer<
   Parsers extends Record<string, ParserWithOptionalDefault<any>>
 >(
@@ -25,7 +16,7 @@ export function createSerializer<
     urlKeys?: Partial<Record<keyof Parsers, string>>
   } = {}
 ) {
-  type Values = Partial<inferSerializerRecordType<Parsers>>
+  type Values = Partial<Nullable<inferParserType<Parsers>>>
 
   /**
    * Generate a query string for the given values.