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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{isCurrentTurnBoundaryEvent}from"#protocol/message.js";import{updatePendingAuthorizations}from"#client/session-utils.js";function isSettledSessionTail(e){let t=e.at(-1);return t!==void 0&&isCurrentTurnBoundaryEvent(t)&&(t.type!==`session.waiting`||collectPendingAuthorizations(e).size===0)}function collectPendingAuthorizations(e){let t=new Set;for(let n of e)updatePendingAuthorizations(t,n);return t}function assertExclusiveTurnInput(e){if(e.message!==void 0==(e.inputResponses!==void 0))throw Error(`A turn requires exactly one of message or inputResponses.`)}let submissionSequence=0;function createSubmissionId(){let e=globalThis.crypto?.randomUUID;return e===void 0?(submissionSequence+=1,`submission_${submissionSequence.toString()}`):e.call(globalThis.crypto)}function createAbortSignal(e,t){return e?AbortSignal.any([e,t]):t}function summarizeUserContent(e){if(typeof e==`string`)return e;let t=[];for(let n of e)n.type===`text`?t.push(n.text):n.type===`file`&&t.push(n.filename?`[file: ${n.filename}]`:`[file]`);return t.join(` `)}function isAbortError(e){return e instanceof Error&&e.name===`AbortError`}function toTerminalStreamFailureError(e){if(e.type!==`session.failed`)return;let t=Error(e.data.message);return t.name=e.data.code,t}function createActiveTurn(e){let t=Promise.withResolvers(),n=Promise.withResolvers(),r={abortController:new AbortController,acceptedFollowUps:0,cancel:()=>e(r),completion:n.promise,followUpDispatches:new Set,receivedFollowUps:0,receivedFollowUpEvents:new Map,followUpSubmissionIds:new Set,resolveCompletion:n.resolve,response:t.promise,resolveResponse:t.resolve};return r}async function followSteeredTurns(e,t,n){for(;e.followUpDispatches.size>0;)await Promise.allSettled(e.followUpDispatches);if(!(e.receivedFollowUps>=e.acceptedFollowUps))for await(let r of t){if(!n())return;if(e.receivedFollowUps+=e.receivedFollowUpEvents.get(r)??0,e.receivedFollowUpEvents.delete(r),isCurrentTurnBoundaryEvent(r)){for(;e.followUpDispatches.size>0;)await Promise.allSettled(e.followUpDispatches);if(e.receivedFollowUps>=e.acceptedFollowUps)return}}}async function waitWithSignal(e,t){if(t===void 0)return await e;let n=Promise.withResolvers(),onAbort=()=>n.reject(t.reason);t.addEventListener(`abort`,onAbort,{once:!0}),t.aborted&&onAbort();try{return await Promise.race([n.promise,e])}finally{t.removeEventListener(`abort`,onAbort)}}export{assertExclusiveTurnInput,collectPendingAuthorizations,createAbortSignal,createActiveTurn,createSubmissionId,followSteeredTurns,isAbortError,isSettledSessionTail,summarizeUserContent,toTerminalStreamFailureError,waitWithSignal};