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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 | 1x | type RgbaFunction = (color: string, opacity: number) => string; export const calculateRgba: RgbaFunction = (color: string, opacity: number): string => { if (color[0] === "#") { color = color.slice(1); } if (color.length === 3) { let res: string = ""; color.split("").forEach((c: string) => { res += c; res += c; }); color = res; } let rgbValues: string = color .match(/.{2}/g)! .map((hex: string) => parseInt(hex, 16)) .join(", "); return `rgba(${rgbValues}, ${opacity})`; }; |