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SurveyJS
Open-Source JSON Form Builder to Create Dynamic Forms Right in Your App. With SurveyJS form UI libraries, you can build and style forms in a fully-integrated drag & drop form builder, render them in your JS app, and store form submission data in any backend, inc. PHP, ASP.NET Core, and Node.js.
I think there's still a case for default exports for a file like toggle.js where the module itself is composed of a single function, but again it's down to your own workflow and personal preference. There's some great discussion in https://github.com/airbnb/javascript/issues/1365 about the pros and cons. Tooling support is definitely a big component of both sides.
I think there's an argument to made that dev tooling could be improved to make default imports more useable. You're absolutely right that named exports fail faster in plain JS without using something like eslint, but there is an eslint rule thing that I discovered to mitigate the naming problem: https://github.com/import-js/eslint-plugin-import/blob/main/docs/rules/no-named-as-default.md