DisallowUnknownFields configures the JSON decoder to error out if unknown fields come along, instead of dropping them by default.

IsJSON tests whether or not the suppied byte array is valid JSON.

Unmarshal is a convenience wrapper around json.Unmarshal to support json decode options.

UnmarshalStrict is a convenience wrapper around json.Unmarshal with strict unmarshal options.

JSONOpt is a decoding option for decoding from JSON format.