Async variant of visitOperation, accepting promise-returning callbacks and returning a Promise.
The traversal stays strictly sequential (depth-first); see TransformerTyped.visitNodeAsync.
Async variant of visitNode, supporting promise-returning callbacks.
The traversal is strictly sequential (depth-first) - it does not parallelise siblings.
Async variant of visitOperation, accepting promise-returning callbacks and returning a Promise. The traversal stays strictly sequential (depth-first); see TransformerTyped.visitNodeAsync.