| 1 | /** |
| 2 | * Copyright (c) Meta Platforms, Inc. and affiliates. |
| 3 | * |
| 4 | * This source code is licensed under the MIT license found in the |
| 5 | * LICENSE file in the root directory of this source tree. |
| 6 | */ |
| 7 | |
| 8 | /** |
| 9 | * Trigger an exhaustiveness check in TypeScript and throw at runtime. |
| 10 | */ |
| 11 | export default function assertExhaustive(_: never, errorMsg: string): never { |
| 12 | throw new Error(errorMsg); |
| 13 | } |