@csstools/postcss-content-alt-text/dist/index.mjs

Generate fallback values for content with alt text

import s from"@csstools/postcss-progressive-custom-properties";import{hasFallback as t,hasSupportsAtRuleAncestor as e}from"@csstools/utilities";import{stringify as r,isWhiteSpaceOrCommentNode as o,isTokenNode as n,parseListOfComponentValues as l}from"@csstools/css-parser-algorithms";import{isTokenString as c,tokenize as i,isTokenDelim as u}from"@csstools/css-tokenizer";function transform(s,t){const e=s[0];if(!e.length)return"";if(t)return r([e]);const l=s[1].filter(s=>!o(s));return 1===l.length&&n(l[0])&&c(l[0].value)&&""===l[0].value[4].value?r([e]):r([[...e,...s[1]]])}function parse(s){const t=l(i({css:s})),e=[];let r=0;for(let s=t.length-1;s>=0;s--){const o=t[s];if(!n(o))continue;const l=o.value;u(l)&&("/"===l[4].value&&(e.push(t.slice(r,s)),r=s+1))}return 0!==r&&e.push(t.slice(r,t.length)),e}const p={test:s=>s.includes("content:")&&s.includes("/")},basePlugin=s=>({postcssPlugin:"postcss-content-alt-text",Declaration(r){if("content"!==r.prop||!r.value.includes("/"))return;if(t(r))return;if(e(r,p))return;const o=parse(r.value);if(2!==o.length)return;const n=transform(o,s?.stripAltText);n!==r.value&&(r.cloneBefore({value:n}),!1===s?.preserve&&r.remove())}});basePlugin.postcss=!0;const creator=t=>{const e=Object.assign({enableProgressiveCustomProperties:!0,preserve:!0,stripAltText:!1},t);return e.enableProgressiveCustomProperties&&e.preserve?{postcssPlugin:"postcss-content-alt-text",plugins:[s(),basePlugin(e)]}:basePlugin(e)};creator.postcss=!0;export{creator as default,creator as"module.exports"};