You can search for identifiers within the package.
in-package search v0.2.0
melange.js_parser
Flow_sedlexing.Utf8
val from_string : string -> lexbuf
val sub_lexeme : lexbuf -> int -> int -> string
val lexeme : lexbuf -> string
val lexeme_to_buffer : lexbuf -> Buffer.t -> unit
This API avoids another allocation
val lexeme_to_buffer2 : lexbuf -> Buffer.t -> Buffer.t -> unit