@kiwicom/fetch: disable ESM modules

Seems like fetch is not ready for ESM, see: https://gitlab.skypicker.com/incubator/universe/issues/494

kiwicom-source-id: 2c45fcd8d8291bfc4022428910260b8f7dce1355

package.json

@@ -2,8 +2,9 @@
   "name": "@kiwicom/fetch",
   "private": false,
   "license": "MIT",
-  "version": "2.4.0",
+  "version": "2.4.1",
   "main": "src/fetchWithRetries.js",
+  "module": false,
   "sideEffects": false,
   "homepage": "https://github.com/kiwicom/fetch",
   "description": "Production ready fetch function with advanced capabilities like retries with delay and request cancellation after timeout.",

src/ResponseError.js

@@ -28,4 +28,4 @@ ResponseError.prototype = Object.create(Error.prototype, {
 
 setPrototypeOf(ResponseError, Error);
 
-module.exports = ResponseError;
+export default ResponseError;

src/TimeoutError.js

@@ -25,4 +25,4 @@ TimeoutError.prototype = Object.create(Error.prototype, {
 
 setPrototypeOf(TimeoutError, Error);
 
-module.exports = TimeoutError;
+export default TimeoutError;

src/fetch.js

@@ -1,7 +1,7 @@
 // @flow
 
-if (global.fetch) {
-  module.exports = global.fetch.bind(global);
-} else {
-  module.exports = require('cross-fetch');
-}
+import fetch from 'cross-fetch';
+
+// Dependency `cross-fetch` takes care of providing correct ponyfill for browsers,
+// React Native and Node.js. See: https://github.com/lquixada/cross-fetch/blob/0b198e8f3a8dc7ebad8f973d4a5bce6d00719b8e/package.json#L6-L8
+export default fetch;