18 lines
500 B
TypeScript
18 lines
500 B
TypeScript
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/**
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* Given a valid six character HEX color code, converts it into its associated
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* RGBA value with a user controllable alpha channel.
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*/
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function hexToRgba (hex: string, alpha = 1): string {
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// noinspection RegExpSimplifiable
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if (!/#?([a-fA-F0-9]{2}){3}/.test(hex)) {
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return hex;
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}
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// noinspection RegExpSimplifiable
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const [ r, g, b ] = hex.match(/[a-fA-F0-9]{2}/g)!.map(v => parseInt(v, 16));
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return `rgba(${r}, ${g}, ${b}, ${alpha})`;
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}
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export { hexToRgba };
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