eve/dist/src/harness/messages.js

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

import{attachClientContext,readClientContext}from"#internal/client-context.js";function createUserMessage(e,t,n){let r={content:t,kind:e,role:`user`};return n===void 0?r:{...r,metadata:n}}function createFrameworkUserMessage(e,t,n){return createUserMessage(e,t,n)}function isUserMessageKind(e){return e===`user`||e===`legacy.unknown`||isFrameworkMessageKind(e)}function isUserModelMessage(e){if(e.role!==`user`)return!1;let{kind:t}=e;return isUserMessageKind(t)}function isFrameworkUserMessage(e){return isUserModelMessage(e)&&isFrameworkMessageKind(e.kind)}function validateHarnessModelMessages(e){let t=[];for(let n of e){if(n.role!==`user`){t.push(n);continue}if(!isUserModelMessage(n))throw TypeError(`Expected every user-role model message to have a kind.`);t.push(n)}return t}function isFrameworkMessageKind(e){return e===`context.instruction`||e===`context.state`||e===`context.compaction`||e===`memory.load`||e===`execution.background_task`||e===`execution.continuation`||e===`execution.retry`}function markFrameworkStepInput(e,t){return{...e,frameworkMessageKind:t}}function frameworkMessageKindForStepInput(e){if(e===void 0)return;let{frameworkMessageKind:t}=e;return isFrameworkMessageKind(t)?t:void 0}function coalesceTurnInputs(e,t){let n=coalesceInputResponses({a:e.inputResponses,b:t.inputResponses}),r=coalesceMessage({a:e.message,b:t.message}),i=coalesceContext({a:e.context,b:t.context}),a=coalesceFrameworkMessageKind({a:e,b:t}),o=coalesceContext({a:readClientContext(e),b:readClientContext(t)}),s=t.outputSchema??e.outputSchema,c={};return n!==void 0&&(c.inputResponses=n),r!==void 0&&(c.message=r),i!==void 0&&(c.context=i),s!==void 0&&(c.outputSchema=s),attachClientContext(a===void 0?c:markFrameworkStepInput(c,a),o)}function normalizeUserContent(e){if(e===void 0)return;if(typeof e==`string`)return e.trim().length>0?e:void 0;let t=e.filter(e=>e.type!==`text`||e.text.trim().length>0);if(t.length!==0)return t.length===e.length?e:t}function normalizeModelMessages(e){return e.flatMap(e=>{if(typeof e.content==`string`)return e.content.trim().length>0?[e]:[];let t=e.content.filter(e=>e.type!==`text`||e.text.trim().length>0);return t.length===0?[]:t.length===e.content.length?[e]:[{...e,content:t}]})}function resolveAssistantStepText(e,t){for(let t=e.length-1;t>=0;--t){let n=e[t];if(n?.role!==`assistant`)continue;let r=extractMessageText(n);if(r.trim().length>0)return r}return t!==void 0&&t.trim().length>0?t:null}function extractMessageText(e){return typeof e.content==`string`?e.content:Array.isArray(e.content)?e.content.flatMap(e=>typeof e==`string`?[e]:`type`in e&&e.type===`text`&&typeof e.text==`string`?[e.text]:[]).join(``):``}function coalesceInputResponses(e){let t=e.a??[],n=e.b??[];if(t.length!==0||n.length!==0)return[...t,...n]}function coalesceContext(e){let t=e.a??[],n=e.b??[];if(t.length!==0||n.length!==0)return[...t,...n]}function coalesceFrameworkMessageKind(e){let t=frameworkMessageKindForStepInput(e.a),n=frameworkMessageKindForStepInput(e.b);return e.a.message===void 0?n:e.b.message===void 0||t===n?t:void 0}function coalesceMessage(e){let t=normalizeUserContent(e.a),n=normalizeUserContent(e.b);return t===void 0?n:n===void 0?t:appendUserContent({appended:n,existing:t})}function appendUserContent(e){return typeof e.existing==`string`&&typeof e.appended==`string`?`${e.existing}\n\n${e.appended}`:[...toUserContentArray(e.existing),...toUserContentArray(e.appended)]}function toUserContentArray(e){return typeof e==`string`?e.length>0?[{type:`text`,text:e}]:[]:Array.isArray(e)?[...e]:[]}function coalesceDeliveries(e){let[t,...n]=e;if(t===void 0)throw Error(`Cannot coalesce an empty delivery batch.`);let r=t.auth,i=t.caller,a=[...t.payloads],o=[...t.deliveryMetadata??[]];for(let e of n){let t=a.length;if(e.auth!==void 0&&(r=e.auth),e.caller!==void 0){if(i!==void 0)throw Error(`Cannot coalesce deliveries from different turns.`);i=e.caller}a.push(...e.payloads),o.push(...(e.deliveryMetadata??[]).map(e=>({...e,payloadIndex:e.payloadIndex+t})))}return{...t,auth:r,caller:i,deliveryMetadata:o.length===0?void 0:o,payloads:a}}export{appendUserContent,coalesceDeliveries,coalesceTurnInputs,createFrameworkUserMessage,createUserMessage,frameworkMessageKindForStepInput,isFrameworkMessageKind,isFrameworkUserMessage,isUserMessageKind,isUserModelMessage,markFrameworkStepInput,normalizeModelMessages,normalizeUserContent,resolveAssistantStepText,validateHarnessModelMessages};