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18 lines
479 B
TypeScript
18 lines
479 B
TypeScript
// Copyright 2018-2024 the Deno authors. All rights reserved. MIT license.
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// This module is browser compatible.
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import { AssertionError } from "./assertion_error.ts";
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/**
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* Use this to assert unreachable code.
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*
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* @example
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* ```ts
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* import { unreachable } from "https://deno.land/std@$STD_VERSION/assert/unreachable.ts";
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*
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* unreachable(); // Throws
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* ```
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*/
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export function unreachable(reason?: string): never {
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throw new AssertionError(reason ?? "unreachable");
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}
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