🎨 Moves polyfills to the config object

README.md

@@ -151,11 +151,25 @@ For older environment without fetch support, you should get a [polyfill](https:/
 
 ## Node.js
 
-Works with [FormData](https:/form-data/form-data) and [fetch](https://www.npmjs.com/package/node-fetch) polyfills.
+Works with any [FormData](https:/form-data/form-data) or [fetch](https://www.npmjs.com/package/node-fetch) polyfills.
 
 ```javascript
+// The global way :
+
 global.fetch = require("node-fetch")
 global.FormData = require("form-data")
+global.URLSearchParams = require("url").URLSearchParams
+
+// Or the non-global way :
+
+const fetch = require("node-fetch")
+const FormData = require("form-data")
+
+wretch().polyfills({
+ fetch: fetch,
+ FormData: FormData,
+ URLSearchParams: require("url").URLSearchParams
+})
 ```
 
 # Usage
@@ -254,7 +268,6 @@ wretch().defaults({ encoding: "same-origin", headers: { "X-Custom": "Header" }},
 */
 ```
 
-
 #### errorType(method: "text" | "json" = "text")
 
 Sets the method (text, json ...) used to parse the data contained in the response body in case of an HTTP error.
@@ -273,6 +286,21 @@ wretch("http://server/which/returns/an/error/with/a/json/body")
  }
 ```
 
+#### polyfills(polyfills: Object)
+
+Sets the non-global polyfills which will be used for every subsequent calls.
+
+```javascript
+const fetch = require("node-fetch")
+const FormData = require("form-data")
+
+wretch().polyfills({
+ fetch: fetch,
+ FormData: FormData,
+ URLSearchParams: require("url").URLSearchParams
+})
+```
+
 #### catcher(code: number, catcher: (error: WretcherError) => void)
 
 Adds a [catcher](https:/elbywan/wretch#catchers) which will be called on every subsequent request error.

dist/config.d.ts

@@ -1,5 +1,10 @@
 declare const _default: {
  defaults: {};
  errorType: any;
+ polyfills: {
+ fetch: any;
+ FormData: any;
+ URLSearchParams: any;
+ };
 };
 export default _default;

dist/resolver.d.ts

@@ -4,7 +4,7 @@ export declare type WretcherError = Error & {
  text?: string;
  json?: any;
 };
-export declare const resolver: (url: any, fetchF: (input: RequestInfo, init?: RequestInit) => Promise<Response>) => (catchers?: Map<number, (error: WretcherError) => void>) => (opts?: {}) => {
+export declare const resolver: (url: any) => (catchers?: Map<number, (error: WretcherError) => void>) => (opts?: {}) => {
  res: <Result = Response>(cb?: (type: void) => Result) => Promise<Result>;
  json: <Result = {
  [key: string]: any;