deepEquals function

bool deepEquals(Object? a, Object? b)

Whether a and b are equal, comparing lists, maps and sets by their contents, e.g. [1, 2] equals [1, 2].

Implementation

bool deepEquals(Object? a, Object? b) {
  if (identical(a, b)) return true;
  if (a is List && b is List) {
    if (a.length != b.length) return false;
    for (var i = 0; i < a.length; i++) {
      if (!deepEquals(a[i], b[i])) return false;
    }
    return true;
  }
  if (a is Map && b is Map) {
    if (a.length != b.length) return false;
    for (final entry in a.entries) {
      if (!b.containsKey(entry.key)) return false;
      if (!deepEquals(entry.value, b[entry.key])) return false;
    }
    return true;
  }
  if (a is Set && b is Set) {
    if (a.length != b.length) return false;
    return a.every((x) => b.contains(x) || b.any((y) => deepEquals(x, y)));
  }
  return a == b;
}