Js_parser.Parser_envSourcetype parse_options = {enums : bool;enable parsing of Flow enums
*)esproposal_decorators : bool;enable parsing of decorators
*)types : bool;enable parsing of Flow types
*)use_strict : bool;treat the file as strict, without needing a "use strict" directive
*)}val init_env :
?token_sink:(token_sink_result -> unit) option ->
?parse_options:parse_options option ->
File_key.t option ->
string ->
env