React Native Error - Can't find variable: self

Question

After adding a node module,isomorphic-fetch(version : ^2.2.1) in React Native app, I am getting an error of Can't find variable: self.
Here I have attached a screenshot.

The error is thrown from the file, located at node_modules > isomorphic-fetch > fetch-npm-browserify.js.
Following is the code of that file.

// the whatwg-fetch polyfill installs the fetch() function
// on the global object (window or self)
//
// Return that as the export for use in Webpack, Browserify etc.
require('whatwg-fetch');
module.exports = self.fetch.bind(self);

Answer 1

@Nirav Dangi,按新建fetch-npm-react-native.js 的方式在我的项目里面没有起作用； 我这边处理方式，是直接修改，node_modules > isomorphic-fetch > fetch-npm-browserify.js 文件的返回：

Google Translate: @Nirav Dangi, in accordance with the new way fetch-npm-react-native.js in my project which is not working; I am here to deal with direct changes, node_modules> isomorphic-fetch> fetch-npm-browserify.js file Back:

var globalObject = typeof self === "undefined" ? global : self;
module.exports = globalObject.fetch.bind(globalObject);
//module.exports = fetch;