quikdown
Version:
Small, safe, bidirectional Markdown parser and editor with streaming, undo/redo, rich fences, MCP tools, and a standalone airgapped build. Zero runtime deps. Browser and Node.js.
9 lines (8 loc) • 7.01 kB
JavaScript
/**
* quikdown_json - JSON Markdown Parser
* @version 1.2.22
* @license BSD-2-Clause
* @copyright DeftIO 2025
*/
function t(t,e={}){if(!t||"string"!=typeof t)return{type:"document",children:[]};return{type:"document",children:s(t.replace(/\r\n/g,"\n").replace(/\r/g,"\n"))}}function e(t){const e=t.trim();return""===e||(!!/^#{1,6}\s/.test(e)||(!!(/^---+\s*$/.test(e)||/^\*\*\*+\s*$/.test(e)||/^___+\s*$/.test(e))||(!!/^>\s*/.test(e)||(!!/^[-*+]\s/.test(e)||(!!/^\d+\.\s/.test(e)||(!!e.startsWith("|")||!!/^(```|~~~)/.test(e)))))))}function n(t){let e="";const n=/[.,;:!?)]/;for(;t.length>0&&n.test(t[t.length-1]);){const n=t[t.length-1];if(")"===n){if((t.match(/\(/g)||[]).length>=(t.match(/\)/g)||[]).length)break}e=n+e,t=t.slice(0,-1)}return{url:t,trailing:e}}function s(t,n){const l=[],c=t.split("\n");let r=0;for(;r<c.length;){const t=c[r];if(""===t.trim()){r++;continue}const 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y=/^\d+\./.test(d);if(m===p&&y!==f)break;if(m>p){const e=[];let n=0;for(;i<t.length&&n<1e3;){n++;const s=t[i],l=s.match(/^(\s*)([*\-+]|\d+\.)\s+/);if(l){if(l[1].length<=p)break}else if(!(r(s)&&c(s)>p))break;e.push(s),i++}if(e.length>0&&s.length>0){const t=o(e,0),n=s[s.length-1];n.children?Array.isArray(n.children)||(n.children=[{type:"paragraph",children:n.children}]):n.children=[],n.children.push(t.node)}h=null;continue}const $={type:"list_item",checked:null,children:null},k=g.match(/^\[([x ])\]\s*(.*)$/i);k&&!f?($.checked="x"===k[1].toLowerCase(),h=k[2]):h=g,$.children=u(h),s.push($),i++}return{node:{type:"list",ordered:f,items:s},nextIndex:i}}function h(t){if(null==t||""===t)return{url:"",title:null};const e=t.match(/^(.*)\s+"([^"]*)"\s*$/);if(e)return{url:e[1].replace(/\s+$/,""),title:e[2]};const n=t.match(/^(.*)\s+'([^']*)'\s*$/);return n?{url:n[1].replace(/\s+$/,""),title:n[2]}:t.startsWith("<")&&t.endsWith(">")?{url:t.slice(1,-1),title:null}:{url:t,title:null}}function u(t,e){if(!t)return[];const s=[];let i=t;for(;i.length>0;){if(i.match(/^(.+?)(?: {2}|\\\n|\n)/)&&i.includes("\n")){const t=i.indexOf("\n"),e=i.slice(0,t),n=i.slice(t+1);if(e.endsWith(" ")||e.endsWith("\\")){const t=e.replace(/\\$/,"").replace(/ +$/,"");t&&s.push(...a(t)),s.push({type:"br"}),i=n;continue}}const e=i.match(/^!\[([^\]]*)\]\(([^)]+)\)/);if(e){const{url:t,title:n}=h(e[2]),l={type:"image",alt:e[1],url:t.trim()};n&&(l.title=n),s.push(l),i=i.slice(e[0].length);continue}const l=i.match(/^\[([^\]]+)\]\(([^)]+)\)/);if(l){const{url:t,title:e}=h(l[2]),n={type:"link",url:t.trim(),children:a(l[1])};e&&(n.title=e),s.push(n),i=i.slice(l[0].length);continue}const c=i.match(/^`([^`\n]+)`/);if(c){s.push({type:"code",value:c[1]}),i=i.slice(c[0].length);continue}const r=i.match(/^(\*\*|__)(.+?)\1/);if(r){s.push({type:"strong",children:a(r[2])}),i=i.slice(r[0].length);continue}const o=i.match(/^~~(.+?)~~/);if(o){s.push({type:"del",children:a(o[1])}),i=i.slice(o[0].length);continue}const u=t[t.length-i.length-1]||"",f=!/[A-Za-z0-9_]/.test(u),p=i.match(/^\*(?!\*)(.+?)(?<!\*)\*(?!\*)/)||f&&i.match(/^_(?![_\s])(.+?)(?<![\s_])_(?![A-Za-z0-9_])/);if(p){s.push({type:"em",children:a(p[1])}),i=i.slice(p[0].length);continue}const d=i.match(/^(https?:\/\/[^\s<>[\]]+)/);if(d){const{url:t,trailing:e}=n(d[1]);s.push({type:"link",url:t,children:[{type:"text",value:t}]}),e&&s.push({type:"text",value:e}),i=i.slice(d[0].length);continue}const g=i.search(/[`*_~![\\n]|https?:\/\//);if(-1===g){s.push({type:"text",value:i});break}0===g?(s.push({type:"text",value:i[0]}),i=i.slice(1)):(s.push({type:"text",value:i.slice(0,g)}),i=i.slice(g))}return function(t){const e=[];for(const n of t)"text"===n.type&&e.length>0&&"text"===e[e.length-1].type?e[e.length-1].value+=n.value:e.push(n);return e}(s)}function a(t,e){return u(t.replace(/\n/g," "))}t.version="1.2.22","undefined"!=typeof module&&module.exports&&(module.exports=t),"undefined"!=typeof window&&(window.quikdown_ast=t);function f(e,n={}){const s=t(e,n),i=void 0!==n.indent?n.indent:2;return JSON.stringify(s,null,i)}f.parse=t,f.version="1.2.22","undefined"!=typeof module&&module.exports&&(module.exports=f),"undefined"!=typeof window&&(window.quikdown_json=f);export{f as default};
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