mimic-fn dependency prevents use in some host environments

[zenflow]

After transpiling this dependency and all of it's dependencies (#23), this package still won't work on IE11 and other host environments (e.g. React Native on iOS) due to issue sindresorhus/mimic-function#10 which I would re-title "Error in host environments where Function instances have non-configurable properties".

My recommended solution is to remove the dependency on mimic-fn and make a new semver-major release, because:

• what mimic-fn does is not needed to memoize functions, which seems to be the "one thing" this package is meant to do; the purpose of each is orthogonal
• for users that need or desire the enhancement that mimic-fn provides, it is possible for them to apply mimic-fn to the function returned from mem, without breaking any functionality of either package. The only downside for them is that they need to apply it themselves, but that seems appropriate, given the first point.

[sindresorhus]

Sorry, I'm not interested in changing any code because of IE. I would recommend finding a different module :)

[zenflow]

@sindresorhus Since it's not just IE11 that is affected, what about just wrapping the call to mimic-fn in a try block? That would not be a breaking change.

I.e. change this:

https://github.com/sindresorhus/mem/blob/bdfc93ad856fdf5622fc6406f601c9762370bc8a/index.js#L69

to this:

  try { 
    // the call to mimicFn below will throw in some host environments
    //   see https://github.com/sindresorhus/mimic-fn/issues/10
    mimicFn(memoized, fn); 
  } catch (error) {}

I would happily make the PR if you would accept that change

(Sorry to pester btw, and thanks for all your work)

[sindresorhus]

Alright. I'm ok with a try/catch.