@instructure/canvas-rce
Version:
A component wrapping Canvas's usage of Tinymce
25 lines (24 loc) • 1.15 kB
JavaScript
/*
* Copyright (C) 2022 - present Instructure, Inc.
*
* This file is part of Canvas.
*
* Canvas is free software: you can redistribute it and/or modify it under
* the terms of the GNU Affero General Public License as published by the Free
* Software Foundation, version 3 of the License.
*
* Canvas is distributed in the hope that it will be useful, but WITHOUT ANY
* WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR
* A PARTICULAR PURPOSE. See the GNU Affero General Public License for more
* details.
*
* You should have received a copy of the GNU Affero General Public License along
* with this program. If not, see <http://www.gnu.org/licenses/>.
*/
export default function round(number, decimalDigits = 2) {
if (decimalDigits < 0) throw new Error('decimal digits must be >= 0');
if (decimalDigits % 1 !== 0) throw new Error('decimal digits must be a whole number');
const val = Math.round(number * 10 ** decimalDigits) / 10 ** decimalDigits;
if (Number.isNaN(val)) throw new Error('the first arguments must be a number');
return val === 0 ? 0 : val; // prevent round(-0) from returning -0
}