43 lines
1.4 KiB
TypeScript
43 lines
1.4 KiB
TypeScript
/*
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* Copyright (C) 2026 Fluxer Contributors
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*
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* This file is part of Fluxer.
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*
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* Fluxer is free software: you can redistribute it and/or modify
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* it under the terms of the GNU Affero 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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* Fluxer 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 Affero General Public License for more details.
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*
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* You should have received a copy of the GNU Affero General Public License
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* along with Fluxer. If not, see <https://www.gnu.org/licenses/>.
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*/
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/** @jsxRuntime automatic */
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/** @jsxImportSource hono/jsx */
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export function formatNumber(value: number): string {
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const digits = Math.max(0, Math.trunc(value)).toString();
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return formatNumberDigits(digits);
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}
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function formatNumberDigits(digits: string): string {
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const len = digits.length;
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if (len <= 3) return digits;
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const headLength = len % 3 === 0 ? 3 : len % 3;
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const head = digits.slice(0, headLength);
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const tail = digits.slice(headLength);
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return `${head}${chunkDigits(tail)}`;
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}
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function chunkDigits(digits: string): string {
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if (digits.length <= 3) return digits;
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const head = digits.slice(0, 3);
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const tail = digits.slice(3);
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return `${head},${chunkDigits(tail)}`;
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}
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