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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.
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Intl.js
Discontinued Compatibility implementation of the ECMAScript Internationalization API (ECMA-402) for JavaScript -- UNMAINTAINED
full release notes
It was possible to work with Intl with or without Hermes all the time, you just had to install a polyfill (https://github.com/andyearnshaw/Intl.js) for it, I've been using it for at least 3 years, and didn't have any issues.
Looks like this is already filed in the Hermes repository: https://github.com/facebook/hermes/issues/212