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Added test suite
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This commit is contained in:
Zakary Timson
2025-05-14 16:30:42 -04:00
parent cf122ef9e8
commit fec373ca4c
32 changed files with 1719 additions and 310 deletions
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8
src/color.ts
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@ -3,10 +3,10 @@
* @param {string} background Color to compare against
* @return {"white" | "black"} Color with the most contrast
*/
export function blackOrWhite(background: string): 'white' | 'black' {
const exploded = background?.match(background.length >= 6 ? /\w\w/g : /\w/g);
if(!exploded) return 'black';
const [r, g, b] = exploded.map(hex => parseInt(hex, 16));
export function contrast(background: string): 'white' | 'black' {
const exploded = background?.match(background.length >= 6 ? /[0-9a-fA-F]{2}/g : /[0-9a-fA-F]/g);
if(!exploded || exploded?.length < 3) return 'black';
const [r, g, b] = exploded.map(hex => parseInt(hex.length == 1 ? `${hex}${hex}` : hex, 16));
const luminance = (0.299 * r + 0.587 * g + 0.114 * b) / 255;
return luminance > 0.5 ? 'black' : 'white';
}