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/**
* @license
* Copyright 2025 Google LLC
* SPDX-License-Identifier: Apache-2.0
*/
/* Fail to compile on unexpected values. */
export function assumeExhaustive(_value: never): void {}
/**
* Throws an exception on unexpected values.
*
* A common use case is switch statements:
* switch(enumValue) {
* case Enum.A:
* case Enum.B:
* break;
* default:
* checkExhaustive(enumValue);
* }
*/
export function checkExhaustive(
value: never,
msg = `unexpected value ${value}!`,
): never {
assumeExhaustive(value);
throw new Error(msg);
}
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