Add fetchCorsForced

This is to be able to to access `nativeFetch` in React Native
environements. This `fetchCorsForced` method will also forcibly use the
CORS servers in browser environemnts. It's idompodent in Node
environements.

CHANGELOG.md

@@ -2,6 +2,8 @@
 
 ## Unreleased
 
+- added: Added `fetchCorsForced` for access to nativeFetch in React Native.
+
 ## 2.21.0 (2024-12-02)
 
 - added: Added `networkFees` to `EdgeTransaction`.

src/core/fake/fake-io.ts

@@ -45,7 +45,8 @@ export function makeFakeIo(): EdgeIo {
 
     // Networking:
     fetch: fakeFetch,
-    fetchCors: fakeFetch
+    fetchCors: fakeFetch,
+    fetchCorsForced: fakeFetch
   }
   return out
 }

src/io/browser/browser-io.ts

@@ -90,6 +90,14 @@ export function makeBrowserIo(): EdgeIo {
       // Throw the error from the first fetch instead of the one from
       // proxy server.
       throw errorToThrow
+    },
+
+    async fetchCorsForced(
+      uri: string,
+      opts?: EdgeFetchOptions
+    ): Promise<EdgeFetchResponse> {
+      const response = await fetchCorsProxy(uri, opts)
+      return response
     }
   }
 }

src/io/node/node-io.ts

@@ -23,6 +23,7 @@ export function makeNodeIo(path: string): EdgeIo {
 
     // Networking:
     fetch,
-    fetchCors: fetch
+    fetchCors: fetch,
+    fetchCorsForced: fetch
   }
 }

src/io/react-native/react-native-worker.ts

@@ -208,6 +208,11 @@ async function makeIo(): Promise<EdgeIo> {
       const response = await nativeFetch(uri, opts)
       state.nativeSuccess = true
       return response
+    },
+
+    async fetchCorsForced(uri: string, opts: EdgeFetchOptions = {}) {
+      const response = await nativeFetch(uri, opts)
+      return response
     }
   }
 

src/types/types.ts

@@ -78,6 +78,12 @@ export interface EdgeIo {
    * on platforms where that may be a problem.
    */
   readonly fetchCors: EdgeFetchFunction
+  /**
+   * This is like `fetch`, but will try to avoid CORS limitations
+   * on platforms always by forcing to use the native fetch implementation,
+   * which by-passes CORS issues.
+   */
+  readonly fetchCorsForced: EdgeFetchFunction
 }
 
 // logging -------------------------------------------------------------