1 line
1.7 KiB
JavaScript
1 line
1.7 KiB
JavaScript
import{color as e,SyntaxFlag as t,serializeRGB as r}from"@csstools/css-color-parser";import{replaceComponentValues as s,parseCommaSeparatedListOfComponentValues as o,isFunctionNode as n,stringify as a}from"@csstools/css-parser-algorithms";import{tokenize as l}from"@csstools/css-tokenizer";const p="(color: hwb(0 0% 0%))";function hasSupportsAtRuleAncestor(e){let t=e.parent;for(;t;)if("atrule"===t.type){if("supports"===t.name.toLowerCase()&&t.params.includes(p))return!0;t=t.parent}else t=t.parent;return!1}function hasFallback(e){const t=e.parent;if(!t)return!1;const r=e.prop.toLowerCase(),s=t.index(e);for(let e=0;e<s;e++){const s=t.nodes[e];if("decl"===s.type&&s.prop.toLowerCase()===r)return!0}return!1}const c=/hwb\(/i,u=/^hwb$/i,postcssPlugin=i=>{const f="preserve"in Object(i)&&Boolean(null==i?void 0:i.preserve);return{postcssPlugin:"postcss-hwb-function",Declaration:(i,{postcss:m})=>{const h=i.value;if(!c.test(h))return;if(f&&hasSupportsAtRuleAncestor(i))return;if(hasFallback(i))return;const v=s(o(l({css:h})),(s=>{if(n(s)&&u.test(s.getName())){const o=e(s);if(!o)return;if(o.syntaxFlags.has(t.HasNoneKeywords))return;if(o.syntaxFlags.has(t.RelativeColorSyntax))return;return r(o)}})),d=a(v);if(d!==h)if(i.variable&&f&&i.parent){const e=i.parent,t=m.atRule({name:"supports",params:p,source:i.source}),r=e.clone();r.removeAll(),r.append(i.clone()),t.append(r),insertAtSupportsAfterCorrectRule(t,e,p),i.replaceWith(i.clone({value:d}))}else f?i.cloneBefore({value:d}):i.replaceWith(i.clone({value:d}))}}};function insertAtSupportsAfterCorrectRule(e,t,r){let s=t,o=t.next();for(;s&&o&&"atrule"===o.type&&"supports"===o.name.toLowerCase()&&o.params===r;)s=o,o=o.next();s.after(e)}postcssPlugin.postcss=!0;export{postcssPlugin as default};
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