For mangling, I made a proxy that creates meaningful names in dev, and sequential or pre-baked ones in production.

For example, FileFields.js:

    const FF = proxyFieldNames('FF', { foo: null, bar: null })
    // DEV:  FF.foo → FF_foo
    // PROD: FF.foo → 'a'

https://github.com/uxtely/js-utils/tree/main/proxy-fields-ob...

As a bonus, it's helpful for renaming, autocompleting, and finding usages.