How to use the @glimmer/program.RuntimeProgramImpl function in @glimmer/program

program(): RuntimeProgram {
    return new RuntimeProgramImpl(this.constants, this.heap);
  }
}

program(): RuntimeProgram {
    return new RuntimeProgramImpl(this.constants, this.heap);
  }
}

export function JitRuntime(
  options: EnvironmentOptions,
  resolver: RuntimeResolverDelegate = {},
  delegate: EnvironmentDelegate = {}
): JitRuntimeContext {
  let env = new EnvironmentImpl(options, delegate);

  let constants = new Constants();
  let heap = new HeapImpl();
  let program = new RuntimeProgramImpl(constants, heap);

  return {
    env,
    resolver: new DefaultRuntimeResolver(resolver),
    program,
  };
}

export function CustomJitRuntime(
  resolver: RuntimeResolver,
  context: SyntaxCompilationContext & {
    program: { constants: RuntimeConstants; heap: RuntimeHeap };
  },
  env: Environment
): JitRuntimeContext {
  let program = new RuntimeProgramImpl(context.program.constants, context.program.heap);

  return {
    env,
    resolver: new DefaultRuntimeResolver(resolver),
    program,
  };
}