Error message: Unable to locate module using import instead of require

I am currently in the process of transitioning from using require to using import for all modules within my project. However, I have encountered some challenges with older npm modules that only provide instructions for require.

For example, when it comes to 'isomorphic-fetch', I am having difficulty finding the correct way to utilize import:

Works

require('isomorphic-fetch')

Fails

import 'isomporphic-fetch'   
import Something from 'isomorphic-fetch'

// error Can't resolve 'isomporphic-fetch' from Project/src/js/

However, I have successfully converted to using import with the es6-promise module.

Works

require('es6-promise').polyfill()

Works

import Something from 'es6-promise'
Something.polyfill()

Answer №1

When dealing with modules, it's important to note that import may not always work as expected. In cases where require('isomorphic-fetch') is functioning correctly but import is not, it could be due to a potential issue with named exports.

To troubleshoot this problem, try using the syntax

import * as Something from 'isomorphic-fetch'

If this method proves successful, it indicates that the module isomorphic-fetch lacks an `export default` statement. Therefore, you will need to specify imports by name or utilize the suggested notation. Additional information on this topic can be found in the provided MDN link above.

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