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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{stripTerminalControls,visibleLength,wrapVisibleLine}from"#cli/ui/terminal-text.js";function formatAttributeContent(e,t,n,r){if(typeof t!=`string`)return Array.isArray(t)?prettyJson(t,r):[stripTerminalControls(shortJson(t))];if(e===`gen_ai.input.messages`){let e=genAiMessageTranscript(t,n,r);if(e!==void 0)return e}return formatPayloadContent(t,r)}function wrapPlainText(e,t){return splitEmbeddedNewlines([stripTerminalControls(e)]).flatMap(e=>wrapVisibleLine(e,t))}function formatPayloadContent(e,t){let n=parseJson(e);return n!==void 0&&(Array.isArray(n)||isRecord(n))?prettyJson(n,t):wrapPlainText(e,t)}function genAiMessageTranscript(e,t,n){let r=parseJson(e);if(!Array.isArray(r)||!r.every(isGenAiMessage))return;let i=[],a=new Map;for(let e of r){let r=genAiMessageParts(e.parts,a),o=e.role===`tool`?toolRoleLabel(r):stripTerminalControls(String(e.role));r.forEach((e,r)=>{let a=r===0?`${t(`${o}:`)} `:` `;i.push(...wrapPrefixed(a,e.text,e.dim?t:void 0,n))})}return i}function toolRoleLabel(e){let t=e.find(e=>e.name!==void 0);return t?.name===void 0?`tool`:`tool ${t.name}`}function genAiMessageParts(e,t){if(!Array.isArray(e))return[{text:shortJson(e)}];let n=[];for(let r of e){if(!isRecord(r)||typeof r.type!=`string`){n.push({text:shortJson(r)});continue}if(r.type===`text`&&typeof r.content==`string`)n.push({text:stripTerminalControls(r.content)});else if(r.type===`reasoning`){let e=typeof r.content==`string`?stripTerminalControls(r.content.trim()):``;n.push({dim:!0,text:e.length>0?`⟨reasoning⟩ ${e}`:`⟨reasoning⟩`})}else if(r.type===`tool_call`&&typeof r.name==`string`){let e=stripTerminalControls(r.name);typeof r.id==`string`&&t.set(r.id,e),n.push({name:e,text:`→ ${e}(${shortJson(r.arguments)})`})}else if(r.type===`tool_call_response`){let e=typeof r.id==`string`?t.get(r.id):void 0;n.push({name:e,text:toolResponseText(r.response)})}else n.push({text:shortJson(r)})}return n.length===0&&n.push({text:shortJson(e)}),n}function toolResponseText(e){return typeof e==`string`?stripTerminalControls(e):shortJson(e)}function prettyJson(e,t){return JSON.stringify(e,null,2).split(` `).flatMap(e=>wrapHanging(e,t,t))}function wrapPrefixed(e,t,n,r){let i=n??(e=>e),a=[];return splitEmbeddedNewlines([t]).forEach((t,n)=>{let o=n===0?e:` `,s=n===0?visibleLength(e):2;wrapHanging(t,r,Math.max(8,r-s)).forEach((e,t)=>{a.push(t===0?`${o}${i(e)}`:` ${i(e)}`)})}),a}function wrapHanging(e,t,n){let r=wrapVisibleLine(e,Math.max(8,t-2));if(visibleLength(r[0]??``)<=n)return r;let[i,...a]=wrapVisibleLine(r[0]??``,Math.max(8,n));return[i??``,...a,...r.slice(1)]}function splitEmbeddedNewlines(e){let t=e.flatMap(e=>e.split(/\r\n|\r|\n/));for(;t.length>1&&t[t.length-1]===``;)t.pop();return t}function shortJson(e){try{return JSON.stringify(e)??String(e)}catch{return String(e)}}function parseJson(e){try{return JSON.parse(e)}catch{return}}function isGenAiMessage(e){return isRecord(e)&&typeof e.role==`string`}function isRecord(e){return typeof e==`object`&&!!e&&!Array.isArray(e)}export{formatAttributeContent,formatPayloadContent,prettyJson,splitEmbeddedNewlines,wrapPlainText};