GetTypeInfo returns TypeInfo for the given type.

MarshalStrictStruct function: * Marshals struct fields, ignoring MarshalJSON() and fields without 'json' tag.

UnmarshalStrictStruct function: * Unmarshals struct fields, ignoring UnmarshalJSON(...) and fields without 'json' tag.

FieldInfo contains information about JSON serialization of a field.

TypeInfo contains information about JSON serialization of a type.

UnsupportedPropertiesError is a helper for extensions that want to refuse unsupported JSON object properties.