Function visitNodes

Visits a NodeArray using the supplied visitor, possibly returning a new NodeArray in its place.

• If the input node array is undefined, the output is undefined.
• If the visitor can return undefined, the node it visits in the array will be reused.
• If the output node array is not undefined, then its contents will satisfy the test.
• In order to obtain a return type that is more specific than NodeArray<Node>, a test function must be provided, and that function must be a type predicate.

Visits a NodeArray using the supplied visitor, possibly returning a new NodeArray in its place.

• If the input node array is undefined, the output is undefined.
• If the visitor can return undefined, the node it visits in the array will be reused.
• If the output node array is not undefined, then its contents will satisfy the test.
• In order to obtain a return type that is more specific than NodeArray<Node>, a test function must be provided, and that function must be a type predicate.