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eve

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Filesystem-first framework for durable backend AI agents that run anywhere.

github.com/vercel/eve

vercel/eve

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import{clipVisible,renderInputText,renderInputWithBlockCursor,visibleLength,wrapVisibleLine}from"./terminal-text.js";import{maskLine,visibleLine}from"./line-editor.js";import{renderCursorRow,renderOptionRow,renderOptionRowContinuation,resolveOptionRowState}from"#setup/cli/option-row.js";import{filterOptions,submitRowIndex}from"#setup/cli/select-state.js";function clip(t,n){return clipVisible(t,n)}function questionFooter(e,t){let n=t.colors;return[``,` ${n.dim(n.italic(e.join(` ${t.glyph.dot} `)))}`]}const BOLD_OR_DIM_CLOSE=`\x1B[22m`;function dimWithEmphasis(e,t){return t.colors.dim(e.replaceAll(BOLD_OR_DIM_CLOSE,`${BOLD_OR_DIM_CLOSE}`))}function toneGlyph(e,t){let n=t.colors;switch(e){case`success`:return n.green(t.glyph.success);case`warning`:return n.yellow(t.glyph.warning);case`error`:return n.red(t.glyph.error);case`info`:return n.dim(t.glyph.dot)}}function renderIndicator(e,t){return e.color===`green`?t.colors.green(e.glyph):t.colors.yellow(e.glyph)}function renderFlowPanel(e,t,n){let r=t.colors,i=[r.dim(t.glyph.hrule.repeat(Math.max(1,n)))];e.title.length>0&&i.push(` ${r.bold(e.title)}`),i.push(``);let a=e.lines.slice(-6);for(let e of a){let n=e.tone===`info`?r.dim(e.text):e.text;i.push(` ${toneGlyph(e.tone,t)} ${n}`)}switch(a.length>0&&i.push(``),e.content.kind){case`question`:e.content.status!==void 0&&i.push(` ${renderIndicator(e.content.status.indicator,t)} ${r.dim(e.content.status.text)}`,``),i.push(...e.content.rows);break;case`status`:i.push(` ${renderIndicator(e.content.status.indicator,t)} ${r.dim(e.content.status.text)}`),e.content.preview!==void 0&&i.push(` ${r.dim(e.content.preview)}`);break;case`preview`:i.push(` ${renderIndicator(e.content.indicator,t)} ${r.dim(e.content.text)}`);break;case`idle`:i.push(` ${renderIndicator(e.content.indicator,t)} ${r.dim(`Working…`)}`);break}return i.map((e,t)=>t===0||e.length===0?clip(e,n):clip(` ${e}`,n))}function optionRow(e){let{option:t,theme:n}=e;return renderOptionRow({colors:n.colors,glyphs:{pointer:n.glyph.pointer,selectedPointer:n.glyph.selectedPointer,success:n.glyph.success,placeholder:n.glyph.option,dot:n.glyph.dot},label:t.label,hint:t.hint,focusHint:t.focusHint,accent:t.accent,isCursor:e.isCursor,state:resolveOptionRowState(t,e.isChecked),placeholder:e.placeholder,hintPadding:e.hintPadding})}function selectPresentation(e){switch(e.kind){case`single`:return{selection:`single`,filter:void 0,layout:`plain`,edit:void 0};case`search`:return{selection:`single`,filter:{placeholder:e.placeholder},layout:`plain`,edit:void 0};case`multi`:return{selection:`multiple`,filter:void 0,layout:`plain`,edit:void 0};case`searchable-multi`:return{selection:`multiple`,filter:{placeholder:e.placeholder},layout:`plain`,edit:void 0};case`stacked`:return{selection:`single`,filter:void 0,layout:`stacked`,edit:void 0};case`task-list`:return{selection:`single`,filter:void 0,layout:`task-list`,edit:void 0};case`editable`:return{selection:`single`,filter:void 0,layout:`task-list`,edit:e.edit}}}function selectMessageRows(e,t,n){if(e===``)return[];let r=e.split(` `).map((e,r)=>` ${t===`stacked`||r>0?n.colors.bold(e):e}`);return r.push(``),r}function searchFilter(e,t,n){return e.length>0?e+n.colors.dim(n.glyph.caret):t===void 0?n.colors.dim(n.glyph.caret):n.colors.dim(`> ${t}`)}function selectViewSize(e){return e.search?e.filter===``&&e.featuredLead>0?Math.min(e.featuredLead,8):8:e.optionCount}function noticeBody(e,t,n){return e.tone===`info`?n.colors.dim(e.text):e.tone===`success`&&t===`task-list`?n.colors.bold(e.text):e.text}function editableOption(e,t,n,r){if(!t||n?.optionValue!==e.value)return e;let i=n.editor.text||n.defaultValue,a=n.editor.text.length===0?i.length:n.editor.cursor,o=n.caretVisible?r.colors.cyan(r.glyph.caret):``,s=`${i.slice(0,a)}${o}${i.slice(a)}`;return{...e,hint:n.formatHint(s)}}function optionWithoutStackedHint(e,t){if(t!==`stacked`||e.hint===void 0)return{option:e,stackedHint:void 0};let{hint:n,...r}=e;return{option:r,stackedHint:n}}function optionUsesPlaceholder(e,t,n){let r=e.filter!==void 0,i=e.layout===`task-list`&&t===n-1,a=e.selection===`multiple`,o=e.layout!==`plain`;return!r&&!i&&(a||o)}function appendSelectOptionRows(e){let{rows:t,state:n,presentation:r,visible:i,start:a,end:o,cursor:s,visibleLabelWidth:c,theme:u}=e,d=u.colors;for(let e=a;e<o;e+=1){let f=i[e],p=e===s;r.layout===`task-list`&&e===o-1&&e>a&&t.push(``);let{option:m,stackedHint:h}=optionWithoutStackedHint(editableOption(f,p,r.edit,u),r.layout);t.push(` ${optionRow({option:m,isCursor:p,isChecked:r.selection===`multiple`&&n.select.selected.has(f.value),placeholder:optionUsesPlaceholder(r,e,i.length),hintPadding:c-f.label.length,theme:u})}`),h!==void 0&&t.push(` ${renderOptionRowContinuation(dimWithEmphasis(h,u))}`),f.description!==void 0&&(f.disabled===!0||p)&&t.push(` ${d.dim(f.description)}`),r.layout===`stacked`&&e<o-1&&t.push(``)}}function appendSubmitRow(e,t,n,r){if(n<0)return;let i=t===n,a=i?`${r.glyph.selectedPointer} ${r.colors.bold(`Submit`)}`:` Submit`;e.push(``,` ${renderCursorRow(a,i,r.colors)}`)}function appendSelectNotices(e,t,n,a,o){if(!(t===void 0||t.length===0)){e.push(``);for(let s of t){let t=toneGlyph(s.tone,a),c=` `.repeat(visibleLength(t)+1),l=Math.max(1,o-2-visibleLength(t)-1),u=wrapVisibleLine(s.text,l);for(let[r,i]of u.entries()){let o=noticeBody({...s,text:i},n,a);e.push(r===0?` ${t} ${o}`:` ${c}${o}`)}}}}function selectFooterHints(e,t,n){let r=[];return e.edit!==void 0&&t[n]?.value===e.edit.optionValue&&r.push(`type to rename`),e.filter!==void 0&&r.push(`type to filter`),r.push(`↑/↓ move`),r.push(e.selection===`multiple`?`space to toggle`:`enter to select`),e.selection===`multiple`&&r.push(`enter on Submit to confirm`),r.push(`esc to cancel`),r}function renderActionQuestion(e,t,n){let r=[` ${t.colors.dim(`${t.glyph.dot} ${e.context}`)}`,``];for(let[n,i]of e.actions.entries())r.push(` ${optionRow({option:i,isCursor:n===e.cursor,isChecked:!1,placeholder:!0,hintPadding:0,theme:t})}`);return r.push(...questionFooter([`↑/↓ move`,`enter to select`,`esc to cancel`],t)),r.map(e=>clip(e,n))}function renderSelectQuestion(e,t,n){if(e.kind===`actions`)return renderActionQuestion(e,t,n);let r=t.colors,i=selectPresentation(e),a=i.filter?filterOptions(e.options,e.select.filter):e.options,o=i.selection===`multiple`?submitRowIndex(a):-1,s=e.select.cursor,c=selectMessageRows(e.message,i.layout,t);i.filter!==void 0&&c.push(` ${searchFilter(e.select.filter,i.filter.placeholder,t)}`);let l=0;for(;a[l]?.featured;)l+=1;let u=selectViewSize({search:i.filter!==void 0,filter:e.select.filter,featuredLead:l,optionCount:a.length}),p=Math.max(0,Math.min(s-Math.floor(u/2),Math.max(0,a.length-u))),m=Math.min(p+u,a.length),h=a.slice(p,m).filter(e=>e.hint!==void 0||e.focusHint!==void 0).reduce((e,t)=>Math.max(e,t.label.length),0);return a.length===0&&c.push(` ${r.dim(`(no matches)`)}`),appendSelectOptionRows({rows:c,state:e,presentation:i,visible:a,start:p,end:m,cursor:s,visibleLabelWidth:h,theme:t}),appendSubmitRow(c,s,o,t),a.length>m-p&&c.push(` ${r.dim(`↑↓ ${a.length} options, showing ${p+1}–${m}`)}`),appendSelectNotices(c,e.notices,i.layout,t,n),e.error!==void 0&&c.push(``,` ${r.red(e.error)}`),c.push(...questionFooter(selectFooterHints(i,a,s),t)),c.map(e=>clip(e,n))}function renderTextQuestion(e,r,i,s){let c=r.colors,l=[];for(let t of e.notices??[]){let e=t.tone===`info`?c.dim(t.text):t.text;l.push(`${toneGlyph(t.tone,r)} ${e}`)}l.push(...e.message.split(` `).map(e=>` ${c.bold(e)}`));let u=Math.max(4,i-4),d=e.mask?maskLine(e.editor):e.editor,f=e.editor.text.length===0?e.placeholder:void 0,p=renderInputWithBlockCursor({...visibleLine(f===void 0?d:{text:f,cursor:0},u,r.glyph.ellipsis),visible:s,inverse:c.inverse,render:f===void 0?renderInputText:e=>c.dim(renderInputText(e))});return l.push(` ${p}`),e.error!==void 0&&l.push(``,` ${c.red(e.error)}`),l.push(...questionFooter([`enter to submit`,`esc to cancel`],r)),l.map(e=>clip(e,i))}function renderAcknowledgeQuestion(e,t,n){let r=t.colors,i=[` ${r.bold(e.message)}`];if(e.lines.length>0){i.push(``);for(let t of e.lines)i.push(` ${r.dim(t)}`)}return i.push(...questionFooter([`enter to continue`],t)),i.map(e=>clip(e,n))}export{renderAcknowledgeQuestion,renderFlowPanel,renderSelectQuestion,renderTextQuestion};