eve/dist/src/execution/legacy-session/snapshot.js

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

import{isObject}from"#shared/guards.js";import{isUserMessageKind,validateHarnessModelMessages}from"#harness/messages.js";import{getHarnessEmissionState}from"#harness/emission.js";const PRESERVED_FRAMEWORK_STATE=new Set([`eve.harness.emission`,`eve.harness.turnUsage`,`eve.harness.reportedSessionUsage`,`eve.harness.sessionRuntimeTokenLimit`]);function readLegacySnapshot(e){let t=e.snapshot;if(!isObject(t)||t.version!==1||!isObject(t.session)||t.session.sessionId!==e.sessionId||!Array.isArray(t.session.history))throw Error(`Unsupported legacy session snapshot.`);return t.session}function importConversation(e){let t=Object.fromEntries(Object.entries(e.state??{}).filter(([e])=>!e.startsWith(`eve.`)||PRESERVED_FRAMEWORK_STATE.has(e))),n=normalizeHistory(e.history),r=getHarnessEmissionState(t),i={...e,history:n,state:t};return{version:1,sessionId:e.sessionId,continuationToken:e.continuationToken,hasProxyInputRequests:!1,emissionState:r,snapshot:{session:i}}}function normalizeHistory(e){let t=[],n=new Map,settle=()=>{n.size!==0&&(t.push({role:`tool`,content:[...n].map(([e,t])=>({type:`tool-result`,toolCallId:e,toolName:t,output:{type:`error-text`,value:`Interrupted by the session upgrade. Start this work again if it is still needed.`}}))}),n.clear())};for(let r of e){let e=r;if(e.role===`assistant`&&Array.isArray(e.content))e={...e,content:e.content.filter(e=>e.type!==`tool-approval-request`)};else if(e.role===`tool`&&(e={...e,content:e.content.filter(e=>e.type!==`tool-approval-response`)},e.content.length===0))continue;if(e.role!==`tool`&&settle(),e.role===`assistant`&&Array.isArray(e.content))for(let t of e.content)t.type===`tool-call`&&n.set(t.toolCallId,t.toolName);if(e.role===`tool`)for(let t of e.content)t.type===`tool-result`&&n.delete(t.toolCallId);let i=e.kind;t.push(e.role===`user`&&!isUserMessageKind(i)?{...e,kind:`user`}:e)}return settle(),validateHarnessModelMessages(t)}export{importConversation,normalizeHistory,readLegacySnapshot};