stringify JSON

converts a data structure to a JSON string

(
  any x,
  boolean pretty_print=true,
  function date_encoder=nil,
  function binary_encoder=nil
) -> string

Encodes x to a JSON string. The returned string uses the encoding conventions given in the arguments.

Values not representable in JSON such as functions, NaN, Infinity, and -Infinity are encoded as null.

Parameters

Name	Type	Description
x	any	The JSON string to parse
Pretty Print	boolean	When `true`, whitespace is inserted to improve the readability of the resulting JSON string.
Date Encoder	function	A function `(datetime x) -> any` used to encode datetime values. It must not return a datetime or binary value. If `nil`, datetime values are encoded using ISO date format with millisecond precision and UTC offset. The underlying pattern is: `uuuu-MM-dd'T'HH:mm:ss.SSSZZZZZ` The default encoding results in strings of the form: `2019-12-03T15:34:22.234+02:00`.
Binary Encoder	function	A function `(binary x) -> any` used to encode binary values. It must not return a datetime or binary value. If `nil`, binary values are encoded as base64 strings.