Converter to be used with JSON::Serializable and YAML::Serializable to serialize a Time instance as the number of milliseconds since the unix epoch. See Time#to_unix_ms.
require "json"
class Timestamp
include JSON::Serializable
@[JSON::Field(converter: Time::EpochMillisConverter)]
value : Time
end
timestamp = Timestamp.from_json(%({"value": 1459860483856}))
timestamp.value # => 2016-04-05 12:48:03.856 UTC
timestamp.to_json # => %({"value":1459860483856})
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Licensed under the Apache License, Version 2.0.
https://crystal-lang.org/api/0.35.1/Time/EpochMillisConverter.html