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import normalizeHue from '../util/normalizeHue.js'; /* References: * https://drafts.csswg.org/css-color/#lab-to-lch * https://drafts.csswg.org/css-color/#color-conversion-code */ const convertLabToLch = ({ l, a, b, alpha }, mode = 'lch') => { let c = Math.sqrt(a * a + b * b); let res = { mode, l, c }; if (c) res.h = normalizeHue((Math.atan2(b, a) * 180) / Math.PI); if (alpha !== undefined) res.alpha = alpha; return res; }; export default convertLabToLch;