CSSColorguard是一个Node.js扩展，用来分析CSS并标出不必要的接近的颜色值冗余
示例代码：
var colorguard = require('colorguard');var fs = require('fs');var css = fs.readFileSync('./file.css', 'utf8');var output = colorguard.inspect(css, { // 0 through 100. Lower is more similar. Anything below 3 warns you. // 3 is the default threshold, but that's mostly personal opinion threshold: 3, // This color is just ignored entirely (use with caution) ignore: ["#030303"], // These color combinations are ignored (usually use this) whitelist: [["#000000", "#010101"]]});
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