Cannot find module: 'isomorphic-form-data' in swagger-ui-react

[AlexKutkanych]

Q&A (please complete the following information)

• OS: Win 10
• Browser: Chrome
• Version: 91.0.4472.164
• Method of installation: npm
• Swagger-UI version: 3.51.1

Describe the bug you're encountering

When running npm run build we ran into a problem with swagger-ui-react package. The error occured in swagger-ui.js - Cannot find module: 'isomorphic-form-data'. Make sure this package is installed.

isomorphic-form-data package is not in node_modules.

Expected behavior

npm run build runs without errors.

Screenshots

Additional context or thoughts

When I install isomorphic-form-data package into my project, build works fine.

[emanb29]

If I understand correctly, this seems to have been introduced by the dependency change in swagger-api/swagger-js#2154

[kaisawind]

any way to fixed it right now?

[char0n]

You're absolutely right and thanks for reporting this. The problem is in swagger-ui-react build fragments. It contains build fragments that reference the isomorphic-form-data in lazy way. As every build on CI of swagger-ui-react will download latest version of swagger-client, which now doesn't require isomorphic-form-data and thus don't install it. We need to fix how we expose build fragments for swagger-ui-react so that this doesn't happen in future. On Thursday 29.7.2021 there will a new release of swagger-ui-react that will fix this issue automatically by updating to it.

The workaround mentioned in this issue, must be implemented (adding isomorphic-form-data in package.json) before the new release of swagger-ui-react is available.

Update:

Problem can be solved as well by pinning swagger-client to a particular version before v3.14.0 in you package.json file and using webpack alias to use this pinned version. But that is a more complicated approach than just installing isomorphic-form-data.