Checklist

Please ensure the following tasks are completed before filing a bug report.

• Read and understood the [Code of Conduct][code-of-conduct].
• Searched for existing issues and pull requests.

Description

Description of the issue.

The following code produces an array whose shape does not match what I'd expect:

Is your feature request related to a problem? Please describe.
flattenDepth function contains reference to internal ramda function called _makeFlat which further makes reference to _isArrayLike. We have _isArrayLike function implemented in ramda-adjunct, so we only need to reimplement makeFlat into our codebase. Be aware that function just cannot be copied due to licensing reasons,

Here we're re-exporting methods of ethjs-util:

https://github.com/ethereumjs/ethereumjs-util/blob/3b1085059194b02354177d334f89cd82a5187883/src/index.ts#L2-L5

But because they're manually added to the exports object, typescript is not adding type definitions for them and Typescript users get an error when using one of those methods, e.g. stripHexPrefix.