Variable: defaultBuildLiteRtConversationInput

const defaultBuildLiteRtConversationInput: (input: {
  audioModalityEnabled?: boolean;
  bucketOrder: ChatCompletionsBucketOrder;
  enableThinking?: boolean;
  filterThoughts: (thoughts: Iterable<Thought>, mode: "all-self" | "latest-self" | "all", selfIdentity: string, replayCompatibility: readonly string[]) => Thought[];
  memories: Iterable<Memory>;
  messages: Iterable<Message>;
  renderChatCompletionsSystemPrompt: (input: {
     bucketOrder: ChatCompletionsBucketOrder;
     memories: Iterable<Memory>;
     renderCtx?: unknown;
     renderFirstPartyRetrievables: (items: Iterable<{
        attrs: RetrievableAttrs;
        retrievable: Retrievable;
      }>, renderRetrievableHandleBody?: (input: {
        artifact: unknown;
        byteLength: number;
        callId: string;
        encoding?: string;
        estimatedTokens?: number;
        lineCount: number;
     }) => string) => Promise<string>;
     renderMemories: (items: Iterable<{
        attrs: MemoryAttrs;
        memory: Memory;
     }>) => string;
     renderRetrievableHandleBody?: (input: {
        artifact: unknown;
        byteLength: number;
        callId: string;
        encoding?: string;
        estimatedTokens?: number;
        lineCount: number;
     }) => string;
     renderRetrievables: (items: Iterable<{
        attrs: RetrievableAttrs;
        retrievable: Retrievable;
      }>, deps: {
        renderFirstPartyRetrievables: (items: Iterable<{
           attrs: RetrievableAttrs;
           retrievable: Retrievable;
         }>, renderRetrievableHandleBody?: (input: {
           artifact: unknown;
           byteLength: number;
           callId: string;
           encoding?: ... | ...;
           estimatedTokens?: ... | ...;
           lineCount: number;
        }) => string) => Promise<string>;
        renderRetrievableHandleBody?: (input: {
           artifact: unknown;
           byteLength: number;
           callId: string;
           encoding?: string;
           estimatedTokens?: number;
           lineCount: number;
        }) => string;
        renderRetrievableSafetyDirective: () => string;
        renderThirdPartyPrivateRetrievables: (items: Iterable<{
           attrs: RetrievableAttrs;
           retrievable: Retrievable;
         }>, deps: {
           renderRetrievableHandleBody?: (input: {
              artifact: ...;
              byteLength: ...;
              callId: ...;
              encoding?: ...;
              estimatedTokens?: ...;
              lineCount: ...;
           }) => string;
           renderUntrustedContent: (content: string, attrs: UntrustedContentAttrs) => string;
        }) => Promise<string>;
        renderThirdPartyPublicRetrievables: (items: Iterable<{
           attrs: RetrievableAttrs;
           retrievable: Retrievable;
         }>, deps: {
           renderRetrievableHandleBody?: (input: {
              artifact: ...;
              byteLength: ...;
              callId: ...;
              encoding?: ...;
              estimatedTokens?: ...;
              lineCount: ...;
           }) => string;
           renderUntrustedContent: (content: string, attrs: UntrustedContentAttrs) => string;
        }) => Promise<string>;
        renderUntrustedContent: (content: string, attrs: UntrustedContentAttrs) => string;
     }) => Promise<string>;
     renderRetrievableSafetyDirective: () => string;
     renderStandingInstructions: (items: Iterable<Tokenizable>, attrs?: StandingInstructionAttrs) => string;
     renderThirdPartyPrivateRetrievables: (items: Iterable<{
        attrs: RetrievableAttrs;
        retrievable: Retrievable;
      }>, deps: {
        renderRetrievableHandleBody?: (input: {
           artifact: unknown;
           byteLength: number;
           callId: string;
           encoding?: string;
           estimatedTokens?: number;
           lineCount: number;
        }) => string;
        renderUntrustedContent: (content: string, attrs: UntrustedContentAttrs) => string;
     }) => Promise<string>;
     renderThirdPartyPublicRetrievables: (items: Iterable<{
        attrs: RetrievableAttrs;
        retrievable: Retrievable;
      }>, deps: {
        renderRetrievableHandleBody?: (input: {
           artifact: unknown;
           byteLength: number;
           callId: string;
           encoding?: string;
           estimatedTokens?: number;
           lineCount: number;
        }) => string;
        renderUntrustedContent: (content: string, attrs: UntrustedContentAttrs) => string;
     }) => Promise<string>;
     renderUntrustedContent: (content: string, attrs: UntrustedContentAttrs) => string;
     retrievables: Iterable<Retrievable>;
     standingInstructions: Iterable<Tokenizable>;
     systemPrompt: Tokenizable;
  }) => Promise<string>;
  renderCtx?: unknown;
  renderedToolCallResults: Map<string, MessageContentItem>;
  renderFirstPartyRetrievables: (items: Iterable<{
     attrs: RetrievableAttrs;
     retrievable: Retrievable;
   }>, renderHandle:
     | ((input: {
     artifact: unknown;
     byteLength: number;
     callId: string;
     encoding?: string;
     estimatedTokens?: number;
     lineCount: number;
   }) => string)
    | undefined) => Promise<string>;
  renderMediaToLiteRtContent?: (input: {
     media: Media;
     modalityEnabled: boolean;
     nonce: string;
     renderTrustedContent: (content: string, attrs: TrustedContentAttrs) => string;
     renderUntrustedContent: (content: string, attrs: UntrustedContentAttrs) => string;
     unsupportedMediaPolicy: UnsupportedMediaPolicy;
     warn?: (msg: string) => void;
  }) => Promise<MessageContentItem[]>;
  renderMemories: (items: Iterable<{
     attrs: MemoryAttrs;
     memory: Memory;
  }>) => string;
  renderRetrievableHandleBody?: (input: {
     artifact: unknown;
     byteLength: number;
     callId: string;
     encoding?: string;
     estimatedTokens?: number;
     lineCount: number;
  }) => string;
  renderRetrievables: (items: Iterable<{
     attrs: RetrievableAttrs;
     retrievable: Retrievable;
   }>, deps: {
     renderFirstPartyRetrievables: (items: Iterable<{
        attrs: RetrievableAttrs;
        retrievable: Retrievable;
      }>, renderRetrievableHandleBody?: (input: {
        artifact: unknown;
        byteLength: number;
        callId: string;
        encoding?: string;
        estimatedTokens?: number;
        lineCount: number;
     }) => string) => Promise<string>;
     renderRetrievableHandleBody?: (input: {
        artifact: unknown;
        byteLength: number;
        callId: string;
        encoding?: string;
        estimatedTokens?: number;
        lineCount: number;
     }) => string;
     renderRetrievableSafetyDirective: () => string;
     renderThirdPartyPrivateRetrievables: (items: Iterable<{
        attrs: RetrievableAttrs;
        retrievable: Retrievable;
      }>, deps: {
        renderRetrievableHandleBody?: (input: {
           artifact: unknown;
           byteLength: number;
           callId: string;
           encoding?: string;
           estimatedTokens?: number;
           lineCount: number;
        }) => string;
        renderUntrustedContent: (content: string, attrs: UntrustedContentAttrs) => string;
     }) => Promise<string>;
     renderThirdPartyPublicRetrievables: (items: Iterable<{
        attrs: RetrievableAttrs;
        retrievable: Retrievable;
      }>, deps: {
        renderRetrievableHandleBody?: (input: {
           artifact: unknown;
           byteLength: number;
           callId: string;
           encoding?: string;
           estimatedTokens?: number;
           lineCount: number;
        }) => string;
        renderUntrustedContent: (content: string, attrs: UntrustedContentAttrs) => string;
     }) => Promise<string>;
     renderUntrustedContent: (content: string, attrs: UntrustedContentAttrs) => string;
  }) => Promise<string>;
  renderRetrievableSafetyDirective: () => string;
  renderStandingInstructions: (items: Iterable<Tokenizable>, attrs?: StandingInstructionAttrs) => string;
  renderThirdPartyPrivateRetrievables: (items: Iterable<{
     attrs: RetrievableAttrs;
     retrievable: Retrievable;
   }>, deps: {
     renderRetrievableHandleBody?: (input: {
        artifact: unknown;
        byteLength: number;
        callId: string;
        encoding?: string;
        estimatedTokens?: number;
        lineCount: number;
     }) => string;
     renderUntrustedContent: (content: string, attrs: UntrustedContentAttrs) => string;
  }) => Promise<string>;
  renderThirdPartyPublicRetrievables: (items: Iterable<{
     attrs: RetrievableAttrs;
     retrievable: Retrievable;
   }>, deps: {
     renderRetrievableHandleBody?: (input: {
        artifact: unknown;
        byteLength: number;
        callId: string;
        encoding?: string;
        estimatedTokens?: number;
        lineCount: number;
     }) => string;
     renderUntrustedContent: (content: string, attrs: UntrustedContentAttrs) => string;
  }) => Promise<string>;
  renderThought: (content: string, attrs: ThoughtAttrs, payload?: unknown) => string;
  renderToolsAsPromptText?: (tools: readonly (
     | Tool<SpooledArtifact>
     | ArtifactTool)[], deps: {
     descriptionToChatCompletionsJsonSchema: (d: DescriptionLike) => JsonSchema;
  }) => string;
  renderTrustedContent: (content: string, attrs: TrustedContentAttrs) => string;
  renderUntrustedContent: (content: string, attrs: UntrustedContentAttrs) => string;
  replayCompatibility: readonly string[];
  retrievables: Iterable<Retrievable>;
  selfIdentity: string;
  standingInstructions: Iterable<Tokenizable>;
  systemPrompt: Tokenizable;
  thoughts: Iterable<Thought>;
  thoughtSurfacing: "all-self" | "latest-self" | "all";
  toolCalls: Iterable<ToolCall>;
  toolDelivery?: "prompt" | "native";
  tools: ToolRegistry;
  toolsToLiteRtTools: (tools: readonly (
     | Tool<SpooledArtifact>
     | ArtifactTool)[], deps: {
     descriptionToChatCompletionsJsonSchema: (d: DescriptionLike) => JsonSchema;
  }) => Tool[];
  unsupportedMediaPolicy?: UnsupportedMediaPolicy;
  visionModalityEnabled?: boolean;
  warn?: (msg: string) => void;
}) => Promise<{
  messages: Message[];
  preface: Preface;
}> = buildLiteRtConversationInput;

Defined in: src/batteries/llm/litert_lm/helpers.ts:631

Default buildLiteRtConversationInput.

Build the LiteRT conversation input from the ADK dispatch context buckets.

Parameters

Parameter	Type	Description
input	{ audioModalityEnabled?: boolean; bucketOrder: ChatCompletionsBucketOrder; enableThinking?: boolean; filterThoughts: (thoughts: Iterable<Thought>, mode: "all-self" | "latest-self" | "all", selfIdentity: string, replayCompatibility: readonly string[]) => Thought[]; memories: Iterable<Memory>; messages: Iterable<Message>; renderChatCompletionsSystemPrompt: (input: { bucketOrder: ChatCompletionsBucketOrder; memories: Iterable<Memory>; renderCtx?: unknown; renderFirstPartyRetrievables: (items: Iterable<{ attrs: RetrievableAttrs; retrievable: Retrievable; }>, renderRetrievableHandleBody?: (input: { artifact: unknown; byteLength: number; callId: string; encoding?: string; estimatedTokens?: number; lineCount: number; }) => string) => Promise<string>; renderMemories: (items: Iterable<{ attrs: MemoryAttrs; memory: Memory; }>) => string; renderRetrievableHandleBody?: (input: { artifact: unknown; byteLength: number; callId: string; encoding?: string; estimatedTokens?: number; lineCount: number; }) => string; renderRetrievables: (items: Iterable<{ attrs: RetrievableAttrs; retrievable: Retrievable; }>, deps: { renderFirstPartyRetrievables: (items: Iterable<{ attrs: RetrievableAttrs; retrievable: Retrievable; }>, renderRetrievableHandleBody?: (input: { artifact: unknown; byteLength: number; callId: string; encoding?: ... | ...; estimatedTokens?: ... | ...; lineCount: number; }) => string) => Promise<string>; renderRetrievableHandleBody?: (input: { artifact: unknown; byteLength: number; callId: string; encoding?: string; estimatedTokens?: number; lineCount: number; }) => string; renderRetrievableSafetyDirective: () => string; renderThirdPartyPrivateRetrievables: (items: Iterable<{ attrs: RetrievableAttrs; retrievable: Retrievable; }>, deps: { renderRetrievableHandleBody?: (input: { artifact: ...; byteLength: ...; callId: ...; encoding?: ...; estimatedTokens?: ...; lineCount: ...; }) => string; renderUntrustedContent: (content: string, attrs: UntrustedContentAttrs) => string; }) => Promise<string>; renderThirdPartyPublicRetrievables: (items: Iterable<{ attrs: RetrievableAttrs; retrievable: Retrievable; }>, deps: { renderRetrievableHandleBody?: (input: { artifact: ...; byteLength: ...; callId: ...; encoding?: ...; estimatedTokens?: ...; lineCount: ...; }) => string; renderUntrustedContent: (content: string, attrs: UntrustedContentAttrs) => string; }) => Promise<string>; renderUntrustedContent: (content: string, attrs: UntrustedContentAttrs) => string; }) => Promise<string>; renderRetrievableSafetyDirective: () => string; renderStandingInstructions: (items: Iterable<Tokenizable>, attrs?: StandingInstructionAttrs) => string; renderThirdPartyPrivateRetrievables: (items: Iterable<{ attrs: RetrievableAttrs; retrievable: Retrievable; }>, deps: { renderRetrievableHandleBody?: (input: { artifact: unknown; byteLength: number; callId: string; encoding?: string; estimatedTokens?: number; lineCount: number; }) => string; renderUntrustedContent: (content: string, attrs: UntrustedContentAttrs) => string; }) => Promise<string>; renderThirdPartyPublicRetrievables: (items: Iterable<{ attrs: RetrievableAttrs; retrievable: Retrievable; }>, deps: { renderRetrievableHandleBody?: (input: { artifact: unknown; byteLength: number; callId: string; encoding?: string; estimatedTokens?: number; lineCount: number; }) => string; renderUntrustedContent: (content: string, attrs: UntrustedContentAttrs) => string; }) => Promise<string>; renderUntrustedContent: (content: string, attrs: UntrustedContentAttrs) => string; retrievables: Iterable<Retrievable>; standingInstructions: Iterable<Tokenizable>; systemPrompt: Tokenizable; }) => Promise<string>; renderCtx?: unknown; renderedToolCallResults: Map<string, MessageContentItem>; renderFirstPartyRetrievables: (items: Iterable<{ attrs: RetrievableAttrs; retrievable: Retrievable; }>, renderHandle: | ((input: { artifact: unknown; byteLength: number; callId: string; encoding?: string; estimatedTokens?: number; lineCount: number; }) => string) | undefined) => Promise<string>; renderMediaToLiteRtContent?: (input: { media: Media; modalityEnabled: boolean; nonce: string; renderTrustedContent: (content: string, attrs: TrustedContentAttrs) => string; renderUntrustedContent: (content: string, attrs: UntrustedContentAttrs) => string; unsupportedMediaPolicy: UnsupportedMediaPolicy; warn?: (msg: string) => void; }) => Promise<MessageContentItem[]>; renderMemories: (items: Iterable<{ attrs: MemoryAttrs; memory: Memory; }>) => string; renderRetrievableHandleBody?: (input: { artifact: unknown; byteLength: number; callId: string; encoding?: string; estimatedTokens?: number; lineCount: number; }) => string; renderRetrievables: (items: Iterable<{ attrs: RetrievableAttrs; retrievable: Retrievable; }>, deps: { renderFirstPartyRetrievables: (items: Iterable<{ attrs: RetrievableAttrs; retrievable: Retrievable; }>, renderRetrievableHandleBody?: (input: { artifact: unknown; byteLength: number; callId: string; encoding?: string; estimatedTokens?: number; lineCount: number; }) => string) => Promise<string>; renderRetrievableHandleBody?: (input: { artifact: unknown; byteLength: number; callId: string; encoding?: string; estimatedTokens?: number; lineCount: number; }) => string; renderRetrievableSafetyDirective: () => string; renderThirdPartyPrivateRetrievables: (items: Iterable<{ attrs: RetrievableAttrs; retrievable: Retrievable; }>, deps: { renderRetrievableHandleBody?: (input: { artifact: unknown; byteLength: number; callId: string; encoding?: string; estimatedTokens?: number; lineCount: number; }) => string; renderUntrustedContent: (content: string, attrs: UntrustedContentAttrs) => string; }) => Promise<string>; renderThirdPartyPublicRetrievables: (items: Iterable<{ attrs: RetrievableAttrs; retrievable: Retrievable; }>, deps: { renderRetrievableHandleBody?: (input: { artifact: unknown; byteLength: number; callId: string; encoding?: string; estimatedTokens?: number; lineCount: number; }) => string; renderUntrustedContent: (content: string, attrs: UntrustedContentAttrs) => string; }) => Promise<string>; renderUntrustedContent: (content: string, attrs: UntrustedContentAttrs) => string; }) => Promise<string>; renderRetrievableSafetyDirective: () => string; renderStandingInstructions: (items: Iterable<Tokenizable>, attrs?: StandingInstructionAttrs) => string; renderThirdPartyPrivateRetrievables: (items: Iterable<{ attrs: RetrievableAttrs; retrievable: Retrievable; }>, deps: { renderRetrievableHandleBody?: (input: { artifact: unknown; byteLength: number; callId: string; encoding?: string; estimatedTokens?: number; lineCount: number; }) => string; renderUntrustedContent: (content: string, attrs: UntrustedContentAttrs) => string; }) => Promise<string>; renderThirdPartyPublicRetrievables: (items: Iterable<{ attrs: RetrievableAttrs; retrievable: Retrievable; }>, deps: { renderRetrievableHandleBody?: (input: { artifact: unknown; byteLength: number; callId: string; encoding?: string; estimatedTokens?: number; lineCount: number; }) => string; renderUntrustedContent: (content: string, attrs: UntrustedContentAttrs) => string; }) => Promise<string>; renderThought: (content: string, attrs: ThoughtAttrs, payload?: unknown) => string; renderToolsAsPromptText?: (tools: readonly ( | Tool<SpooledArtifact> | ArtifactTool)[], deps: { descriptionToChatCompletionsJsonSchema: (d: DescriptionLike) => JsonSchema; }) => string; renderTrustedContent: (content: string, attrs: TrustedContentAttrs) => string; renderUntrustedContent: (content: string, attrs: UntrustedContentAttrs) => string; replayCompatibility: readonly string[]; retrievables: Iterable<Retrievable>; selfIdentity: string; standingInstructions: Iterable<Tokenizable>; systemPrompt: Tokenizable; thoughts: Iterable<Thought>; thoughtSurfacing: "all-self" | "latest-self" | "all"; toolCalls: Iterable<ToolCall>; toolDelivery?: "prompt" | "native"; tools: ToolRegistry; toolsToLiteRtTools: (tools: readonly ( | Tool<SpooledArtifact> | ArtifactTool)[], deps: { descriptionToChatCompletionsJsonSchema: (d: DescriptionLike) => JsonSchema; }) => Tool[]; unsupportedMediaPolicy?: UnsupportedMediaPolicy; visionModalityEnabled?: boolean; warn?: (msg: string) => void; }	-
input.audioModalityEnabled?	boolean	-
input.bucketOrder	ChatCompletionsBucketOrder	-
input.enableThinking?	boolean	Whether the model's "thinking" mode is enabled. Passed EXPLICITLY into the chat template via preface.extra_context.enable_thinking so the template never decides for itself. Defaults to false.
input.filterThoughts	(thoughts: Iterable<Thought>, mode: "all-self" | "latest-self" | "all", selfIdentity: string, replayCompatibility: readonly string[]) => Thought[]	-
input.memories	Iterable<Memory>	-
input.messages	Iterable<Message>	-
input.renderChatCompletionsSystemPrompt	(input: { bucketOrder: ChatCompletionsBucketOrder; memories: Iterable<Memory>; renderCtx?: unknown; renderFirstPartyRetrievables: (items: Iterable<{ attrs: RetrievableAttrs; retrievable: Retrievable; }>, renderRetrievableHandleBody?: (input: { artifact: unknown; byteLength: number; callId: string; encoding?: string; estimatedTokens?: number; lineCount: number; }) => string) => Promise<string>; renderMemories: (items: Iterable<{ attrs: MemoryAttrs; memory: Memory; }>) => string; renderRetrievableHandleBody?: (input: { artifact: unknown; byteLength: number; callId: string; encoding?: string; estimatedTokens?: number; lineCount: number; }) => string; renderRetrievables: (items: Iterable<{ attrs: RetrievableAttrs; retrievable: Retrievable; }>, deps: { renderFirstPartyRetrievables: (items: Iterable<{ attrs: RetrievableAttrs; retrievable: Retrievable; }>, renderRetrievableHandleBody?: (input: { artifact: unknown; byteLength: number; callId: string; encoding?: ... | ...; estimatedTokens?: ... | ...; lineCount: number; }) => string) => Promise<string>; renderRetrievableHandleBody?: (input: { artifact: unknown; byteLength: number; callId: string; encoding?: string; estimatedTokens?: number; lineCount: number; }) => string; renderRetrievableSafetyDirective: () => string; renderThirdPartyPrivateRetrievables: (items: Iterable<{ attrs: RetrievableAttrs; retrievable: Retrievable; }>, deps: { renderRetrievableHandleBody?: (input: { artifact: ...; byteLength: ...; callId: ...; encoding?: ...; estimatedTokens?: ...; lineCount: ...; }) => string; renderUntrustedContent: (content: string, attrs: UntrustedContentAttrs) => string; }) => Promise<string>; renderThirdPartyPublicRetrievables: (items: Iterable<{ attrs: RetrievableAttrs; retrievable: Retrievable; }>, deps: { renderRetrievableHandleBody?: (input: { artifact: ...; byteLength: ...; callId: ...; encoding?: ...; estimatedTokens?: ...; lineCount: ...; }) => string; renderUntrustedContent: (content: string, attrs: UntrustedContentAttrs) => string; }) => Promise<string>; renderUntrustedContent: (content: string, attrs: UntrustedContentAttrs) => string; }) => Promise<string>; renderRetrievableSafetyDirective: () => string; renderStandingInstructions: (items: Iterable<Tokenizable>, attrs?: StandingInstructionAttrs) => string; renderThirdPartyPrivateRetrievables: (items: Iterable<{ attrs: RetrievableAttrs; retrievable: Retrievable; }>, deps: { renderRetrievableHandleBody?: (input: { artifact: unknown; byteLength: number; callId: string; encoding?: string; estimatedTokens?: number; lineCount: number; }) => string; renderUntrustedContent: (content: string, attrs: UntrustedContentAttrs) => string; }) => Promise<string>; renderThirdPartyPublicRetrievables: (items: Iterable<{ attrs: RetrievableAttrs; retrievable: Retrievable; }>, deps: { renderRetrievableHandleBody?: (input: { artifact: unknown; byteLength: number; callId: string; encoding?: string; estimatedTokens?: number; lineCount: number; }) => string; renderUntrustedContent: (content: string, attrs: UntrustedContentAttrs) => string; }) => Promise<string>; renderUntrustedContent: (content: string, attrs: UntrustedContentAttrs) => string; retrievables: Iterable<Retrievable>; standingInstructions: Iterable<Tokenizable>; systemPrompt: Tokenizable; }) => Promise<string>	-
input.renderCtx?	unknown	The live dispatch context, threaded so DYNAMIC (evaluatable) Tokenizable content resolves against it at assembly via .render(renderCtx). Optional — a static Tokenizable ignores it, and callers outside a dispatch may omit it (the evaluator's no-context fallback applies). Typed loosely (the primitive types the arg as DispatchContext; this battery does not import that contract).
input.renderedToolCallResults	Map<string, MessageContentItem>	-
input.renderFirstPartyRetrievables	(items: Iterable<{ attrs: RetrievableAttrs; retrievable: Retrievable; }>, renderHandle: | ((input: { artifact: unknown; byteLength: number; callId: string; encoding?: string; estimatedTokens?: number; lineCount: number; }) => string) | undefined) => Promise<string>	-
input.renderMediaToLiteRtContent?	(input: { media: Media; modalityEnabled: boolean; nonce: string; renderTrustedContent: (content: string, attrs: TrustedContentAttrs) => string; renderUntrustedContent: (content: string, attrs: UntrustedContentAttrs) => string; unsupportedMediaPolicy: UnsupportedMediaPolicy; warn?: (msg: string) => void; }) => Promise<MessageContentItem[]>	-
input.renderMemories	(items: Iterable<{ attrs: MemoryAttrs; memory: Memory; }>) => string	-
input.renderRetrievableHandleBody?	(input: { artifact: unknown; byteLength: number; callId: string; encoding?: string; estimatedTokens?: number; lineCount: number; }) => string	-
input.renderRetrievables	(items: Iterable<{ attrs: RetrievableAttrs; retrievable: Retrievable; }>, deps: { renderFirstPartyRetrievables: (items: Iterable<{ attrs: RetrievableAttrs; retrievable: Retrievable; }>, renderRetrievableHandleBody?: (input: { artifact: unknown; byteLength: number; callId: string; encoding?: string; estimatedTokens?: number; lineCount: number; }) => string) => Promise<string>; renderRetrievableHandleBody?: (input: { artifact: unknown; byteLength: number; callId: string; encoding?: string; estimatedTokens?: number; lineCount: number; }) => string; renderRetrievableSafetyDirective: () => string; renderThirdPartyPrivateRetrievables: (items: Iterable<{ attrs: RetrievableAttrs; retrievable: Retrievable; }>, deps: { renderRetrievableHandleBody?: (input: { artifact: unknown; byteLength: number; callId: string; encoding?: string; estimatedTokens?: number; lineCount: number; }) => string; renderUntrustedContent: (content: string, attrs: UntrustedContentAttrs) => string; }) => Promise<string>; renderThirdPartyPublicRetrievables: (items: Iterable<{ attrs: RetrievableAttrs; retrievable: Retrievable; }>, deps: { renderRetrievableHandleBody?: (input: { artifact: unknown; byteLength: number; callId: string; encoding?: string; estimatedTokens?: number; lineCount: number; }) => string; renderUntrustedContent: (content: string, attrs: UntrustedContentAttrs) => string; }) => Promise<string>; renderUntrustedContent: (content: string, attrs: UntrustedContentAttrs) => string; }) => Promise<string>	-
input.renderRetrievableSafetyDirective	() => string	-
input.renderStandingInstructions	(items: Iterable<Tokenizable>, attrs?: StandingInstructionAttrs) => string	-
input.renderThirdPartyPrivateRetrievables	(items: Iterable<{ attrs: RetrievableAttrs; retrievable: Retrievable; }>, deps: { renderRetrievableHandleBody?: (input: { artifact: unknown; byteLength: number; callId: string; encoding?: string; estimatedTokens?: number; lineCount: number; }) => string; renderUntrustedContent: (content: string, attrs: UntrustedContentAttrs) => string; }) => Promise<string>	-
input.renderThirdPartyPublicRetrievables	(items: Iterable<{ attrs: RetrievableAttrs; retrievable: Retrievable; }>, deps: { renderRetrievableHandleBody?: (input: { artifact: unknown; byteLength: number; callId: string; encoding?: string; estimatedTokens?: number; lineCount: number; }) => string; renderUntrustedContent: (content: string, attrs: UntrustedContentAttrs) => string; }) => Promise<string>	-
input.renderThought	(content: string, attrs: ThoughtAttrs, payload?: unknown) => string	-
input.renderToolsAsPromptText?	(tools: readonly ( | Tool<SpooledArtifact> | ArtifactTool)[], deps: { descriptionToChatCompletionsJsonSchema: (d: DescriptionLike) => JsonSchema; }) => string	-
input.renderTrustedContent	(content: string, attrs: TrustedContentAttrs) => string	-
input.renderUntrustedContent	(content: string, attrs: UntrustedContentAttrs) => string	-
input.replayCompatibility	readonly string[]	-
input.retrievables	Iterable<Retrievable>	-
input.selfIdentity	string	-
input.standingInstructions	Iterable<Tokenizable>	-
input.systemPrompt	Tokenizable	-
input.thoughts	Iterable<Thought>	-
input.thoughtSurfacing	"all-self" | "latest-self" | "all"	-
input.toolCalls	Iterable<ToolCall>	-
input.toolDelivery?	"prompt" | "native"	How tool definitions reach the model. 'prompt' (default) renders them as system-prompt text (the portable path — the Gemma-4 .litertlm template throws on native tools); 'native' uses preface.tools (the chat-template path — only for models whose template handles tools).
input.tools	ToolRegistry	-
input.toolsToLiteRtTools	(tools: readonly ( | Tool<SpooledArtifact> | ArtifactTool)[], deps: { descriptionToChatCompletionsJsonSchema: (d: DescriptionLike) => JsonSchema; }) => Tool[]	-
input.unsupportedMediaPolicy?	UnsupportedMediaPolicy	-
input.visionModalityEnabled?	boolean	-
input.warn?	(msg: string) => void	-

Returns

Promise<{ messages: Message[]; preface: Preface; }>

Remarks

Maps the ADK history model onto LiteRT's createConversation({ preface }) + per-turn sendMessage(messages) shape:

• Leading buckets (system prompt + standingInstructions / memories / retrievables before timeline in bucketOrder) → a single preface.messages system message.
• Tools → preface.tools.
• Timeline (messages, surviving thoughts, tool calls — chronological) → the messages array sent for this turn, each a LiteRT Message. Thoughts render via the shared renderThought into assistant messages; tool calls render an assistant tool_calls message + a tool role message carrying the pre-rendered tool_response content item.

Returns { preface, messages } for engine.createConversation({ preface }) then conversation.sendMessageStreaming(messages).