feat(acp-next): add session state service (#29240)
This commit is contained in:
Shoubhit Dash
218
packages/opencode/src/acp-next/session.ts
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218
packages/opencode/src/acp-next/session.ts
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import type { McpServer } from "@agentclientprotocol/sdk"
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import { Context, Effect, Layer, Ref } from "effect"
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import type { ModelID, ProviderID } from "../provider/schema"
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import * as ACPNextError from "./error"
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export type SelectedModel = {
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providerID: ProviderID
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modelID: ModelID
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}
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export type KnownMessagePartMetadata = {
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messageId: string
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partId: string
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toolCallId?: string
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metadata?: unknown
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}
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export type Info = {
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id: string
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cwd: string
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mcpServers: readonly McpServer[]
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createdAt: Date
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model?: SelectedModel
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variant?: string
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modeId?: string
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knownParts: ReadonlyMap<string, KnownMessagePartMetadata>
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}
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export type StoreInput = {
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id: string
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cwd: string
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mcpServers?: readonly McpServer[]
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createdAt?: Date
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model?: SelectedModel
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variant?: string
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modeId?: string
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}
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export type RecordPartMetadataInput = {
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sessionId: string
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messageId: string
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partId: string
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toolCallId?: string
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metadata?: unknown
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}
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export type PartMetadataLookupInput = {
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sessionId: string
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messageId: string
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partId: string
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}
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export type Interface = {
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readonly create: (input: StoreInput) => Effect.Effect<Info>
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readonly load: (input: StoreInput) => Effect.Effect<Info>
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readonly get: (sessionId: string) => Effect.Effect<Info, ACPNextError.SessionNotFoundError>
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readonly tryGet: (sessionId: string) => Effect.Effect<Info | undefined>
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readonly remove: (sessionId: string) => Effect.Effect<Info | undefined>
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readonly setModel: (
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sessionId: string,
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model: SelectedModel | undefined,
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) => Effect.Effect<Info, ACPNextError.SessionNotFoundError>
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readonly getModel: (sessionId: string) => Effect.Effect<SelectedModel | undefined, ACPNextError.SessionNotFoundError>
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readonly setVariant: (
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sessionId: string,
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variant: string | undefined,
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) => Effect.Effect<Info, ACPNextError.SessionNotFoundError>
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readonly getVariant: (sessionId: string) => Effect.Effect<string | undefined, ACPNextError.SessionNotFoundError>
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readonly setMode: (
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sessionId: string,
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modeId: string | undefined,
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) => Effect.Effect<Info, ACPNextError.SessionNotFoundError>
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readonly getMode: (sessionId: string) => Effect.Effect<string | undefined, ACPNextError.SessionNotFoundError>
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readonly recordPartMetadata: (
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input: RecordPartMetadataInput,
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) => Effect.Effect<KnownMessagePartMetadata, ACPNextError.SessionNotFoundError>
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readonly getPartMetadata: (
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input: PartMetadataLookupInput,
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) => Effect.Effect<KnownMessagePartMetadata | undefined, ACPNextError.SessionNotFoundError>
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readonly tryGetPartMetadata: (input: PartMetadataLookupInput) => Effect.Effect<KnownMessagePartMetadata | undefined>
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}
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export class Service extends Context.Service<Service, Interface>()("@opencode/ACPNext/Session") {}
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type State = Map<string, Info>
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export const layer = Layer.effect(
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Service,
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Effect.gen(function* () {
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const sessions = yield* Ref.make<State>(new Map())
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const store = Effect.fn("ACPNext.Session.store")(function* (input: StoreInput) {
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const session = makeSession(input)
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yield* Ref.update(sessions, (state) => new Map(state).set(session.id, session))
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return snapshot(session)
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})
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const tryGet = Effect.fn("ACPNext.Session.tryGet")(function* (sessionId: string) {
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const session = (yield* Ref.get(sessions)).get(sessionId)
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if (!session) return
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return snapshot(session)
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})
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const get = Effect.fn("ACPNext.Session.get")(function* (sessionId: string) {
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const session = yield* tryGet(sessionId)
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if (session) return session
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return yield* new ACPNextError.SessionNotFoundError({ sessionId })
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})
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const update = Effect.fn("ACPNext.Session.update")(function* (
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sessionId: string,
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fn: (session: Info) => Info,
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) {
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const result = yield* Ref.modify(sessions, (state) => {
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const session = state.get(sessionId)
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if (!session) return [undefined, state] as const
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const next = fn(session)
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return [snapshot(next), new Map(state).set(sessionId, next)] as const
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})
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if (result) return result
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return yield* new ACPNextError.SessionNotFoundError({ sessionId })
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})
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const remove = Effect.fn("ACPNext.Session.remove")(function* (sessionId: string) {
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return yield* Ref.modify(sessions, (state) => {
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const session = state.get(sessionId)
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if (!session) return [undefined, state] as const
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const next = new Map(state)
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next.delete(sessionId)
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return [snapshot(session), next] as const
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})
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})
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const setModel: Interface["setModel"] = Effect.fn("ACPNext.Session.setModel")((sessionId, model) =>
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update(sessionId, (session) => ({ ...session, model })),
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)
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const setVariant: Interface["setVariant"] = Effect.fn("ACPNext.Session.setVariant")((sessionId, variant) =>
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update(sessionId, (session) => ({ ...session, variant })),
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)
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const setMode: Interface["setMode"] = Effect.fn("ACPNext.Session.setMode")((sessionId, modeId) =>
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update(sessionId, (session) => ({ ...session, modeId })),
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)
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const recordPartMetadata: Interface["recordPartMetadata"] = Effect.fn("ACPNext.Session.recordPartMetadata")(
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(input) => {
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const metadata = {
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messageId: input.messageId,
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partId: input.partId,
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toolCallId: input.toolCallId,
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metadata: input.metadata,
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}
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return update(input.sessionId, (session) => ({
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...session,
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knownParts: new Map(session.knownParts).set(partMetadataKey(input), metadata),
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})).pipe(Effect.as(metadata))
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},
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)
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return Service.of({
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create: store,
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load: store,
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get,
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tryGet,
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remove,
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setModel,
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getModel: Effect.fn("ACPNext.Session.getModel")(function* (sessionId) {
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return (yield* get(sessionId)).model
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}),
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setVariant,
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getVariant: Effect.fn("ACPNext.Session.getVariant")(function* (sessionId) {
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return (yield* get(sessionId)).variant
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}),
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setMode,
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getMode: Effect.fn("ACPNext.Session.getMode")(function* (sessionId) {
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return (yield* get(sessionId)).modeId
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}),
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recordPartMetadata,
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getPartMetadata: Effect.fn("ACPNext.Session.getPartMetadata")(function* (input) {
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return (yield* get(input.sessionId)).knownParts.get(partMetadataKey(input))
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}),
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tryGetPartMetadata: Effect.fn("ACPNext.Session.tryGetPartMetadata")(function* (input) {
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return (yield* tryGet(input.sessionId))?.knownParts.get(partMetadataKey(input))
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}),
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})
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}),
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)
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export const defaultLayer = layer
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function makeSession(input: StoreInput): Info {
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return {
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id: input.id,
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cwd: input.cwd,
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mcpServers: [...(input.mcpServers ?? [])],
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createdAt: input.createdAt ? new Date(input.createdAt) : new Date(),
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model: input.model,
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variant: input.variant,
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modeId: input.modeId,
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knownParts: new Map(),
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}
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}
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function snapshot(session: Info): Info {
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return {
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...session,
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mcpServers: [...session.mcpServers],
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createdAt: new Date(session.createdAt),
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knownParts: new Map(session.knownParts),
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}
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}
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function partMetadataKey(input: { messageId: string; partId: string }) {
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return `${input.messageId}:${input.partId}`
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}
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export * as ACPNextSession from "./session"
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