React-Native fetch through proxy

To set options in the Fetch API to use a proxy in react-native, you can pass an options object as the second argument to the fetch() function. The options object should include a proxy property that specifies the URL of the proxy server.

For example:

const options = {
  proxy: 'http://my-proxy-server.com'
};

fetch(uri, options)
  .then(response => response.json())
  .then(data => console.log(data))
  .catch(error => console.error(error));

Note that the proxy property is not supported by all browsers, so you may need to use a polyfill or a third-party library to use a proxy with the Fetch API.

Alternatively, you can use a library like axios that supports specifying a proxy server in the configuration options. To use a proxy with axios, you can set the proxy property in the axios.defaults.proxy object.

For example:

axios.defaults.proxy = {
  host: 'my-proxy-server.com',
  port: 8080
};

axios.get(uri)
  .then(response => console.log(response.data))
  .catch(error => console.error(error));