allow require('util') to throw

[easrng]

adds support for cjs environments with no node core modules and no bundler-style browser resolution

[ljharb]

As discussed offline, I'm not willing to add a perf hit for common cases just to cover an edge case; browsers must use a working bundler (ie, supports the browser field) anyways or they can't use this package or most of npm.

I'll close this for now, but let's keep chatting - if there's a way to make things better for edge cases that doesn't impact common cases, I'm always happy to consider it!