Jsont.MetaAbstract syntax tree node metadata.
This type keeps information about source text locations and whitespace.
make textloc ~ws_before ~ws_after is metadata with text location textloc whitespace ws_before before the node and ws_after after the node. Both default to "".
val none : tnone is metadata for when there is none. Its textloc is Textloc.none and its whitespace is empty.
val ws_before : t -> stringws_before m is source whitespace before the node.
val ws_after : t -> stringws_after m is source whitespace after the node.
clear_textloc m is m with textloc set to Textloc.none.