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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{contextStorage}from"#context/container.js";import{ActivityRootTurnIdKey}from"#context/keys.js";import{coalesceTurnInputs}from"#harness/messages.js";const PENDING_INPUT_BATCHES_KEY=`eve.runtime.pendingInputBatches`,LEGACY_PENDING_INPUT_BATCH_KEY=`eve.runtime.pendingInputBatch`,DEFERRED_STEP_INPUT_KEY=`eve.runtime.deferredStepInput`;function hasPendingInputBatch(e){return getPendingInputBatches(e).length>0}function getPendingInputRequestIds(e){return new Set(getPendingInputBatches(e).flatMap(e=>e.requests.map(e=>e.requestId)))}function coercePendingInputBatch(e){if(typeof e!=`object`||!e)return;let t=e;if(Array.isArray(t.requests)&&Array.isArray(t.responseMessages))return t}function getPendingInputBatches(e){let t=e?.[PENDING_INPUT_BATCHES_KEY];if(Array.isArray(t)){let e=t.map(e=>coercePendingInputBatch(e)).filter(e=>e!==void 0);return assertUniqueRequestIds(e),e}let n=coercePendingInputBatch(e?.[LEGACY_PENDING_INPUT_BATCH_KEY]),r=n===void 0?[]:[n];return assertUniqueRequestIds(r),r}function assertUniqueRequestIds(e){let t=new Set;for(let n of e)for(let e of n.requests){if(t.has(e.requestId))throw TypeError(`Internal pending input invariant violated: requestId must be unique across all pending batches: ${JSON.stringify(e.requestId)}.`);t.add(e.requestId)}}function removePendingInputBatches(e,t){let n=new Set(t);return setPendingInputBatches(e,getPendingInputBatches(e.state).filter(e=>!n.has(e)))}function setPendingInputBatches(e,t){assertUniqueRequestIds(t);let n={...e.state};return delete n[LEGACY_PENDING_INPUT_BATCH_KEY],t.length===0?delete n[PENDING_INPUT_BATCHES_KEY]:n[PENDING_INPUT_BATCHES_KEY]=t.map(e=>({event:e.event,activityRootTurnId:e.activityRootTurnId,responseAuthRequiredRequestIds:e.responseAuthRequiredRequestIds,requests:[...e.requests],responseMessages:[...e.responseMessages]})),{...e,state:Object.keys(n).length>0?n:void 0}}function appendPendingInputBatch(e){return setPendingInputBatches(e.session,[...getPendingInputBatches(e.session.state),{event:e.event,activityRootTurnId:e.activityRootTurnId??contextStorage.getStore()?.get(ActivityRootTurnIdKey),responseAuthRequiredRequestIds:e.responseAuthRequiredRequestIds,requests:e.requests,responseMessages:e.responseMessages}])}function activityRootTurnIdForInputResponses(e,t){return getPendingInputBatches(e).find(e=>e.requests.some(e=>t.has(e.requestId)))?.activityRootTurnId}function activityRequestIdsForRootTurn(e,t){return getPendingInputBatches(e).flatMap(e=>e.activityRootTurnId===t?e.requests.map(e=>e.requestId):[])}function consumeDeferredStepInput(e){let t=getDeferredStepInput(e.session);if(t===void 0)return e;if(e.preferCurrentInput===!0&&e.input!==void 0)return{input:e.input,session:e.session};let n=clearDeferredStepInput(e.session);return e.input===void 0?{input:t,session:n}:{input:coalesceTurnInputs(t,e.input),session:n}}function hasDeferredStepInput(e){return getDeferredStepInput(e)!==void 0}function getDeferredStepInput(e){return e.state?.[DEFERRED_STEP_INPUT_KEY]}function queueDeferredStepInput(e,t){let n=getDeferredStepInput(e),r=n===void 0?t:coalesceTurnInputs(n,t),i={...e.state};return i[DEFERRED_STEP_INPUT_KEY]=r,{...e,state:i}}function clearDeferredStepInput(e){if(e.state?.[DEFERRED_STEP_INPUT_KEY]===void 0)return e;let t={...e.state};return delete t[DEFERRED_STEP_INPUT_KEY],{...e,state:Object.keys(t).length>0?t:void 0}}export{activityRequestIdsForRootTurn,activityRootTurnIdForInputResponses,appendPendingInputBatch,consumeDeferredStepInput,getPendingInputBatches,getPendingInputRequestIds,hasDeferredStepInput,hasPendingInputBatch,queueDeferredStepInput,removePendingInputBatches};