🏭 addon.resolver can now be a function

should solve #212

src/resolver.ts

@@ -95,7 +95,7 @@ export const resolver = <T, Chain, R>(wretch: T & Wretch<T, Chain, R>) => {
  })
  }
  // Enforces the proper promise type when a body parsing method is called.
- type BodyParser = <Type>(funName: string | null) => <Result = void>(cb?: (type: Type) => Result) => Promise<Awaited<Result>>
+ type BodyParser = <Type>(funName: "json" | "blob" | "formData" | "arrayBuffer" | "text" | null) => <Result = void>(cb?: (type: Type) => Result) => Promise<Awaited<Result>>
  const bodyParser: BodyParser = funName => cb => funName ?
  // If a callback is provided, then callback with the body result otherwise return the parsed body itself.
  catchersWrapper(throwingPromise.then(_ => _ && _[funName]()).then(_ => cb ? cb(_) : _)) :
@@ -127,7 +127,7 @@ export const resolver = <T, Chain, R>(wretch: T & Wretch<T, Chain, R>) => {
 
  const enhancedResponseChain: R extends undefined ? Chain & WretchResponseChain<T, Chain, undefined> : R = addons.reduce((chain, addon) => ({
  ...chain,
- ...(addon.resolver as any)
+ ...(typeof addon.resolver === "function" ? (addon.resolver as (_: WretchResponseChain<T, Chain, R>) => any)(chain) : addon.resolver)
  }), responseChain)
 
  return resolvers.reduce((chain, r) => r(chain, wretch), enhancedResponseChain)

src/types.ts

@@ -786,6 +786,6 @@ export type FetchLike = (url: string, opts: WretchOptions) => Promise<WretchResp
 export type WretchAddon<W extends unknown, R extends unknown = unknown> = {
  beforeRequest?<T, C, R>(wretch: T & Wretch<T, C, R>, options: WretchOptions, state: Record<any, any>): T & Wretch<T, C, R>,
  wretch?: W,
- resolver?: R
+ resolver?: R | (<T, C>(_: C & WretchResponseChain<T, C, R>) => R)
 }
 

tsconfig.json

@@ -17,7 +17,6 @@
  "isolatedModules": true
  },
  "include": [
- "src/**/*",
- "test.ts"
+ "src/**/*"
  ]
 }