21 lines
822 B
TypeScript
21 lines
822 B
TypeScript
// SPDX-FileCopyrightText: 2021 Johannes Loher
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//
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// SPDX-License-Identifier: MIT
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const defaultMessage =
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'There has been an unexpected error in the Tickwerk module. For more details, please take a look at the console (F12).';
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/**
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* Tests if the given `value` is truthy.
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*
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* If it is not truthy, an {@link Error} is thrown, which depends on the given `message` parameter:
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* - If `message` is a string`, it is used to construct a new {@link Error} which then is thrown.
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* - If `message` is an instance of {@link Error}, it is thrown.
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* - If `message` is `undefined`, an {@link Error} with a default message is thrown.
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*/
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export const enforce = (value: unknown, message: string | Error = defaultMessage): asserts value => {
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if (!value) {
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throw message instanceof Error ? message : new Error(message);
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}
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};
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