Syntactic sugar for `typedef`

[FMorschel]

Today if I have two libraries that export classes with the same name, we get ambiguous_import if we try to use it. The suggested workarounds are to add an alias to one (or both) imports or to use hide.

Most of the time this is just fine, I'd like to propose a syntactic sugar to make the class names clearer on use.

Today we can do the following:

a.dart

class Random {}

// Other things that our code might use
class A {}

main.dart

import 'dart:math';
import 'a.dart' as a show Random;
import 'a.dart' hide Random;

typedef MyRandom = a.Random;

A? aInstance;
MyRandom? myRandom;
Random? random;

I'd like to propose a syntactic sugar for imported elements:

import 'dart:math';
import 'a.dart' with Random as MyRandom;

I'm not sure what word to use on with, just a suggestion. Using a different word to mean that I don't want to show or hide anything, but I believe this should work on show as well.