24 lines
711 B
TypeScript
24 lines
711 B
TypeScript
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/*
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* Copyright (C) Contributors to the Suwayomi project
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*
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* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at https://mozilla.org/MPL/2.0/.
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*/
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export const getNextRotationValue = <Value>(
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indexOfValue: number,
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values: Value[],
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isDefaultable?: boolean,
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): Value | undefined => {
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const nextValueIndex = (indexOfValue + 1) % values.length;
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const wasLastValue = nextValueIndex === 0;
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const isDefaultNextValue = !!isDefaultable && wasLastValue;
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if (isDefaultNextValue) {
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return undefined;
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}
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return values[(indexOfValue + 1) % values.length];
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};
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