Refactor child mapping & scope boundary detection #348
Add this suggestion to a batch that can be applied as a single commit.
This suggestion is invalid because no changes were made to the code.
Suggestions cannot be applied while the pull request is closed.
Suggestions cannot be applied while viewing a subset of changes.
Only one suggestion per line can be applied in a batch.
Add this suggestion to a batch that can be applied as a single commit.
Applying suggestions on deleted lines is not supported.
You must change the existing code in this line in order to create a valid suggestion.
Outdated suggestions cannot be applied.
This suggestion has been applied or marked resolved.
Suggestions cannot be applied from pending reviews.
Suggestions cannot be applied on multi-line comments.
Suggestions cannot be applied while the pull request is queued to merge.
Suggestion cannot be applied right now. Please check back later.
This is a refactor with no intended semantic changes. It addresses some "TODO" comments in the source by creating a generic fmap-like facility for mapping over child nodes.
I also factored out scope boundary detection. In addition to helping readability, this makes it easier to safely introduce future constructs (like ES6 arrow function expressions) that are also scope boundaries.