check if element is an attribute

(attribute? (nav/parse-string “{:title "hello"}”)) => true

check if element is a code directive

(code-directive? (nav/parse-string “:code {:lang "python"} "1 + 1"”)) => true

check if element is a comment form

(comment? (nav/parse-string “(comment 1 => 1)”)) => true

check if element is a deftest form

(deftest? (nav/parse-string “(deftest …)”)) => true

check if element is a directive

(directive? (nav/parse-string “:chapter {:title "hello"}”)) => true

check if element is a fact form

(fact? (nav/parse-string “(fact 1 => 1)”)) => true

check if element is a facts form

(facts? (nav/parse-string “(facts 1 => 1)”)) => true

check if element is an is form

(is? (nav/parse-string “(is …)”)) => true

check if element is a ns form

(ns? (nav/parse-string “(ns code.manage)”)) => true

check if element is a paragraph (string)

(paragraph? (nav/parse-string “"hello world"”)) => true

check if element is whitespace

(whitespace? (nav/parse-string " ")) => true

helper function for navigating ^:meta tags

((wrap-meta query/match) (nav/parse-string “^:hello ()”) list?) => true