sanitizeData method

Map<String, dynamic> sanitizeData(Map<String, dynamic> typedData)

Removes properties from a message Map<String,dynamic> that are not defined per EIP-712

@param {Map<String, dynamic>} data - typed message Map<String, dynamic> @returns {Map<String, dynamic>} - typed message Map<String, dynamic> with only allowed fields

Implementation

Map<String, dynamic> sanitizeData(Map<String, dynamic> typedData) {
  assert(
    typedData['types'] != null,
    "the types property of the input typedData needs to be provided",
  );
  assert(
    typedData['primaryType'] != null,
    "the primaryType property of the input typedData needs to be provided",
  );
  assert(
    typedData['domain'] != null,
    "the domain property of the input typedData needs to be provided",
  );
  assert(
    typedData['message'] != null,
    "the message property of the input typedData needs to be provided",
  );
  Map<String, dynamic> _sanitizedData = {};
  for (var key
      in (TYPED_MESSAGE_SCHEMA["properties"] as Map<String, dynamic>).keys
          .toList()) {
    if (typedData[key] != null) {
      _sanitizedData[key] = typedData[key];
    }
  }
  if (_sanitizedData["types"]["EIP712Domain"] == null) {
    _sanitizedData["types"]["EIP712Domain"] = List<Map<String, String>>.from(
      [],
    );
  }
  return _sanitizedData;
}