Aster experiments with ESnext

[mandricore]

Experiment with rx-aster for use with ES.next (latest javascript)

First try simple experiments with grasp using grasp-squery and grasp-equery

• find a class
• find a function in a class

For each AST match

• rename identifier
• delete node with identifier
• add/remove an import of a module
• add function to matching class
• replace class function

To delete an AST node, make a query that finds it, then replace it with an empty string.

rx-aster utilizes the grasp queries under the hood. Familiarize with rx-aster, then integrate your grasp work with rx-aster. While doing so, add tests to rx-aster and make PRs.

For each file with a specific exported class, subclass or file name:

• add/delete function or class (or function in class)
• add/remove import or export

These experiments will be the foundation for the chaining API issue