decode method
Implementation
DecodeResult<A> decode(dynamic json) {
return key.fold(() => _decodeF(json), (key) {
if (json is Map<String, dynamic> && !json.containsKey(key)) {
return left(DecodingError.missingField(key));
} else if (json is! Map<String, dynamic>) {
return left(DecodingError("Expected value at field: '$key'"));
} else {
return _decodeF(json[key]);
}
});
}