spine-runtimes/spine-flutter/lib/web_ffi/modules/null_memory.dart

import 'dart:typed_data';
import 'memory.dart';
import '../ffi/types.dart';

class NullMemory implements Memory {
  @override
  Pointer<T> allocate<T extends NativeType>(int byteCount, {int? alignment}) {
    throw new UnsupportedError(
        'Can not use the null memory to allocate space!');
  }

  @override
  ByteBuffer get buffer =>
      throw new UnsupportedError('The null memory has no buffer!');

  @override
  void free(Pointer<NativeType> pointer) {
    throw new UnsupportedError('Can not use the null memory to free pointers!');
  }
}