32 lines
961 B
TypeScript
32 lines
961 B
TypeScript
/**
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* Copyright 2020 Google Inc. All rights reserved.
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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/**
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* Asserts that the given value is truthy.
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* @param value - some conditional statement
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* @param message - the error message to throw if the value is not truthy.
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*
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* @internal
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*/
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export const assert: (value: unknown, message?: string) => asserts value = (
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value,
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message
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) => {
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if (!value) {
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throw new Error(message);
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}
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};
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