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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{summarizeToolArgs,summarizeToolResult}from"./tool-format.js";import{diffWriteDetail}from"./line-diff.js";import{stripTerminalControls}from"#cli/ui/terminal-text.js";const WRITE_FILE_VERB=`Write`,DELEGATE_VERB=`Delegate`,FINAL_OUTPUT_TITLE=`Return final output`,BUILTIN_TOOL_COPY={agent:{verb:`Delegate`,pastVerb:`Delegated`,argKey:`message`,singularNoun:`task`,pluralNoun:`tasks`},ask_question:{verb:`Ask`,pastVerb:`Asked`,argKey:`prompt`,singularNoun:`question`,pluralNoun:`questions`},bash:{verb:`Run`,pastVerb:`Ran`,argKey:`command`,singularNoun:`command`,pluralNoun:`commands`},connection_search:{verb:`Discover`,pastVerb:`Discovered`,argKey:`keywords`,singularNoun:`tool search`,pluralNoun:`tool searches`},glob:{verb:`Glob`,pastVerb:`Globbed`,argKey:`pattern`,singularNoun:`pattern`,pluralNoun:`patterns`},grep:{verb:`Grep`,pastVerb:`Grepped`,argKey:`pattern`,singularNoun:`pattern`,pluralNoun:`patterns`},load_skill:{verb:`Load`,pastVerb:`Loaded`,argKey:`skill`,singularNoun:`skill`,pluralNoun:`skills`},read_file:{verb:`Read`,pastVerb:`Read`,argKey:`filePath`,singularNoun:`file`,pluralNoun:`files`},task_cancel:{verb:`Cancel`,pastVerb:`Cancelled`,argKey:`taskIds`,extractItem:taskIdsArg,singularNoun:`task`,pluralNoun:`tasks`},web_fetch:{verb:`Fetch`,pastVerb:`Fetched`,argKey:`url`,singularNoun:`URL`,pluralNoun:`URLs`},web_search:{verb:`Search`,pastVerb:`Searched`,argKey:`query`,extractItem:e=>salientArg(e,`objective`)??salientArg(e,`search_query`)??salientArg(e,`searchQuery`)??webSearchActionArg(e),singularNoun:`query`,pluralNoun:`queries`}};function presentWriteFileTool(e,t,n){let r=readWriteFileInput(e,t);if(r===void 0)return{title:e,subtitle:summarizeToolArgs(t),summarizeResult:summarizeToolResult};let i=diffWriteDetail(n?.previousContent,r.content,n?.existed).map(e=>e.kind===`gap`?e:{...e,text:stripTerminalControls(e.text)});return{title:`${WRITE_FILE_VERB} ${salientLine(r.path)??r.path}`,doneTitle:`Wrote ${salientLine(r.path)??r.path}`,subtitle:``,summarizeResult:()=>void 0,detail:i,keepDetailWhenDone:!0}}function readWriteFileInput(e,t){if(toolBaseName(e)!==`write_file`||typeof t!=`object`||!t||Array.isArray(t))return;let n=t,r=n.filePath,i=n.content;if(typeof r==`string`&&r.trim().length!==0&&typeof i==`string`)return{path:r,content:i}}function presentTool(e,t,n){let r=toolBaseName(e);if(r===`todo`)return presentTodoTool(t);if(r===`write_file`)return presentWriteFileTool(e,t,n);if(n?.isSubagent===!0)return{title:`${DELEGATE_VERB} ${r}`,doneTitle:`Delegated ${r}`,subtitle:salientArg(t,`message`)??``,summarizeResult:()=>void 0};if(r===`final_output`)return{title:FINAL_OUTPUT_TITLE,subtitle:``,summarizeResult:()=>void 0};let i=BUILTIN_TOOL_COPY[r];if(i!==void 0){let e=salientArg(t,i.argKey)??i.extractItem?.(t);if(e!==void 0)return{title:`${i.verb} ${e}`,doneTitle:`${i.pastVerb} ${e}`,subtitle:``,summarizeResult:()=>void 0,group:{verb:i.verb,pastVerb:i.pastVerb,singularNoun:i.singularNoun,pluralNoun:i.pluralNoun,item:e}}}return{title:e,subtitle:summarizeToolArgs(t),summarizeResult:summarizeToolResult}}function presentPreparingTool(e,t){let n=toolBaseName(e);if(n===`final_output`)return{title:FINAL_OUTPUT_TITLE,subtitle:``,summarizeResult:()=>void 0};if(t?.isSubagent===!0)return{title:`${DELEGATE_VERB} ${n} …`,subtitle:``,summarizeResult:()=>void 0};let r=n===`write_file`?WRITE_FILE_VERB:BUILTIN_TOOL_COPY[n]?.verb;return{title:r===void 0?e:`${r} …`,subtitle:r===void 0?`preparing…`:``,summarizeResult:()=>void 0}}function isPanelRoutedTool(e){let t=toolBaseName(e);return t===`todo`||t===`ask_question`}function toolBaseName(e){return e.split(/[.:/]/u).at(-1)??e}function presentTodoTool(e){let t=typeof e==`object`&&e&&!Array.isArray(e)?e.todos:void 0;return Array.isArray(t)?{title:`Update todo list`,subtitle:`${t.length} task${t.length===1?``:`s`}`,summarizeResult:()=>void 0}:{title:`Read todo list`,subtitle:``,summarizeResult:()=>void 0}}function webSearchActionArg(e){if(typeof e!=`object`||!e||Array.isArray(e))return;let t=e.action;if(typeof t!=`object`||!t||Array.isArray(t))return;let n=t,r=n.queries;if(Array.isArray(r)){let e=r.filter(e=>typeof e==`string`).map(salientLine).filter(e=>e!==void 0).join(`, `);if(e.length>0)return e}for(let e of[`query`,`url`,`pattern`]){let t=n[e];if(typeof t==`string`){let e=salientLine(t);if(e!==void 0)return e}}}function taskIdsArg(e){if(typeof e!=`object`||!e||Array.isArray(e))return;let t=e.taskIds;if(!Array.isArray(t))return;let n=t.filter(e=>typeof e==`string`);if(n.length!==0)return salientLine(n.join(`, `))}function salientArg(e,t){if(typeof e!=`object`||!e||Array.isArray(e))return;let n=e[t];if(typeof n==`string`)return salientLine(n)}function salientLine(e){let t=stripTerminalControls(e).split(/\r?\n/u).find(e=>e.trim().length>0)?.trim()??``;return t.length>0?t:void 0}export{isPanelRoutedTool,presentPreparingTool,presentTool,readWriteFileInput,toolBaseName};