[json_codable] Enhance JsonCodable to support custom key mappings between JSON and Dart fields #59718
Description
Description
The new JsonCodable macro in Dart is a great feature for JSON serialization, but it currently lacks support for custom JSON key mappings. This makes it difficult to map Dart fields to JSON keys with different naming conventions (e.g., fileName in Dart to file_name in JSON).
Example:
@JsonCodable()
class AudiosItem {
final String id;
// No support for custom JSON key mappings like this:
// @JsonKey(name: 'file_name') or @JsonField(name: 'file_name')
final String fileName;
const AudiosItem({
required this.fileName,
required this.id,
});
}