eve
Version:
Filesystem-first framework for durable backend AI agents that run anywhere.
7 lines • 4.44 kB
JavaScript
import{sliceVisible,visibleLength}from"#cli/ui/terminal-text.js";import{lexer}from"#compiled/marked/index.js";const ansi={bold:`\x1B[1m`,boldOff:`\x1B[22m`,cyan:`\x1B[36m`,cyanOff:`\x1B[39m`,dim:`\x1B[2m`,dimOff:`\x1B[22m`,italic:`\x1B[3m`,italicOff:`\x1B[23m`,strike:`\x1B[9m`,strikeOff:`\x1B[29m`};function renderMarkdown(e,t=1/0){return trimTrailingBlankRows(renderBlocks(lexer(e),t)).join(`
`)}function renderBlocks(e,t){let n=[];for(let i of e)switch(i.type){case`space`:pushBlankRow(n);break;case`heading`:{let e=i.depth===1?`█`:i.depth===2?`■`:`▶`;n.push(`${e} ${ansi.bold}${renderInline(i.tokens)}${ansi.boldOff}`);break}case`paragraph`:case`text`:n.push(...renderInline(i.tokens,i.text).split(`
`));break;case`code`:n.push(...renderCodeBlock(i));break;case`blockquote`:n.push(...renderBlocks(i.tokens??[],Math.max(8,t-2)).map(e=>`${ansi.dim}│${ansi.dimOff} ${e}`));break;case`list`:n.push(...renderList(i,t));break;case`table`:n.push(...renderTable(i,t));break;case`hr`:n.push(ansi.dim+`─`.repeat(horizontalRuleWidth(t))+ansi.dimOff);break;case`html`:n.push(...(i.text??i.raw??``).split(`
`));break;case`def`:break;default:i.tokens===void 0?i.text!==void 0&&n.push(i.text):n.push(...renderBlocks(i.tokens,t));break}return n}function renderCodeBlock(e){let t=[];e.lang?.trim()&&t.push(` ${ansi.dim}${e.lang.trim()}${ansi.dimOff}`);let n=(e.text??``).replace(/\n$/u,``).split(`
`);for(let e of n)t.push(`${ansi.dim}│${ansi.dimOff} ${ansi.cyan}${e}${ansi.cyanOff}`);return t}function renderList(e,t){let n=[],r=typeof e.start==`number`?e.start:1;for(let i of e.items??[]){let a=e.ordered?`${r}.`:`•`,o=i.checked===!0?`☑ `:i.checked===!1?`☐ `:``,s=renderBlocks(i.tokens??[],Math.max(8,t-a.length-1));(s.length===0?[``]:s).forEach((e,t)=>{n.push(t===0?`${a} ${o}${e}`:`${` `.repeat(a.length+1)}${e}`)}),r+=1}return n}function renderInline(e,t=``){return e===void 0?t:e.map(renderInlineToken).join(``)}function renderInlineToken(e){switch(e.type){case`text`:return renderInline(e.tokens,e.text??``);case`strong`:return`${ansi.bold}${renderInline(e.tokens,e.text)}${ansi.boldOff}`;case`em`:return`${ansi.italic}${renderInline(e.tokens,e.text)}${ansi.italicOff}`;case`del`:return`${ansi.strike}${renderInline(e.tokens,e.text)}${ansi.strikeOff}`;case`codespan`:return`${ansi.cyan}${e.text??``}${ansi.cyanOff}`;case`link`:{let t=renderInline(e.tokens,e.text),n=e.href??``;return n.length===0||t===n?`${ansi.cyan}${t}${ansi.cyanOff}`:`${t} (${ansi.cyan}${n}${ansi.cyanOff})`}case`image`:{let t=e.text?.trim()||`image`,n=e.href??``;return n.length===0?`[${t}]`:`[${t}] (${ansi.cyan}${n}${ansi.cyanOff})`}case`br`:return`
`;case`checkbox`:return e.checked?`☑ `:`☐ `;case`escape`:return e.text??``;case`html`:return e.text??e.raw??``;default:return renderInline(e.tokens,e.text??e.raw??``)}}function renderTable(e,n){let i=e.header??[];if(i.length===0)return[];let a=i.map((t,n)=>normalizeAlignment(e.align?.[n])),o=i.map(renderTableCell),s=(e.rows??[]).map(e=>normalizeTableRow(e,i.length).map(renderTableCell)),c=[o,...s],l=a.map((e,n)=>Math.max(3,...c.map(e=>visibleLength(e[n]??``))));return fitTableWidths(l,n),[formatTableRow(o.map(e=>`${ansi.bold}${e}${ansi.boldOff}`),l,a),l.map(e=>`─`.repeat(e)).join(` `),...s.map(e=>formatTableRow(e,l,a))]}function renderTableCell(e){return renderInline(e.tokens,e.text).replaceAll(`
`,` `)}function normalizeTableRow(e,t){return Array.from({length:t},(t,n)=>e[n]??{text:``,tokens:[]})}function normalizeAlignment(e){return e??`left`}function fitTableWidths(e,t){if(!Number.isFinite(t))return;let n=Math.max(0,e.length-1)*2,r=Math.max(e.length*3,Math.floor(t)-n);for(;e.reduce((e,t)=>e+t,0)>r;){let t=Math.max(...e),n=e.findIndex(e=>e===t&&e>3);if(n===-1)return;e[n]=t-1}}function formatTableRow(e,t,n){return e.map((e,r)=>alignTableCell(fitTableCell(e,t[r]??3),t[r]??3,n[r]??`left`)).join(` `)}function fitTableCell(n,r){return visibleLength(n)<=r?n:`${sliceVisible(n,Math.max(1,r-1))}…`}function alignTableCell(e,n,r){let i=Math.max(0,n-visibleLength(e));if(r===`right`)return`${` `.repeat(i)}${e}`;if(r===`center`){let t=Math.floor(i/2);return`${` `.repeat(t)}${e}${` `.repeat(i-t)}`}return`${e}${` `.repeat(i)}`}function horizontalRuleWidth(e){return Number.isFinite(e)?Math.max(3,Math.min(40,Math.floor(e))):40}function pushBlankRow(e){e.length>0&&e.at(-1)!==``&&e.push(``)}function trimTrailingBlankRows(e){for(;e.at(-1)===``;)e.pop();return e}export{renderMarkdown};