30 lines
1.0 KiB
TypeScript
30 lines
1.0 KiB
TypeScript
/*
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* Vencord, a modification for Discord's desktop app
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* Copyright (c) 2023 Vendicated and contributors
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*
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* This program is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see <https://www.gnu.org/licenses/>.
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*/
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export function onlyOnce<F extends Function>(f: F): F {
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let called = false;
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let result: any;
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return function onlyOnceWrapper(this: unknown) {
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if (called) return result;
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called = true;
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return (result = f.apply(this, arguments));
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} as unknown as F;
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}
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