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@langchain/langgraph-sdk

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Client library for interacting with the LangGraph API

github.com/langchain-ai/langgraphjs

langchain-ai/langgraphjs

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{"version":3,"file":"server.cjs","names":["options"],"sources":["../../../src/react-ui/server/server.ts"],"sourcesContent":["import { v4 as uuidv4 } from \"uuid\";\nimport type { ComponentPropsWithoutRef, ElementType } from \"react\";\nimport type { RemoveUIMessage, UIMessage } from \"../types.js\";\n\ninterface MessageLike {\n id?: string;\n}\n\n/**\n * Helper to send and persist UI messages. Accepts a map of component names to React components\n * as type argument to provide type safety. Will also write to the `options?.stateKey` state.\n *\n * @param config LangGraphRunnableConfig\n * @param options\n * @returns\n */\nexport const typedUi = <Decl extends Record<string, ElementType>>(\n config: {\n writer?: (chunk: unknown) => void;\n runId?: string;\n metadata?: Record<string, unknown>;\n tags?: string[];\n runName?: string;\n configurable?: {\n __pregel_send?: (writes_: [string, unknown][]) => void;\n [key: string]: unknown;\n };\n },\n options?: {\n /** The key to write the UI messages to. Defaults to `ui`. */\n stateKey?: string;\n }\n) => {\n type PropMap = { [K in keyof Decl]: ComponentPropsWithoutRef<Decl[K]> };\n const items: (UIMessage | RemoveUIMessage)[] = [];\n const stateKey = options?.stateKey ?? \"ui\";\n\n const runId = (config.metadata?.run_id as string | undefined) ?? config.runId;\n if (!runId) throw new Error(\"run_id is required\");\n\n function handlePush<K extends keyof PropMap & string>(\n message: {\n id?: string;\n name: K;\n props: PropMap[K];\n metadata?: Record<string, unknown>;\n },\n options?: { message?: MessageLike; merge?: boolean }\n ): UIMessage<K, PropMap[K]>;\n\n function handlePush<K extends keyof PropMap & string>(\n message: {\n id?: string;\n name: K;\n props: Partial<PropMap[K]>;\n metadata?: Record<string, unknown>;\n },\n options: { message?: MessageLike; merge: true }\n ): UIMessage<K, Partial<PropMap[K]>>;\n\n function handlePush<K extends keyof PropMap & string>(\n message: {\n id?: string;\n name: K;\n props: PropMap[K] | Partial<PropMap[K]>;\n metadata?: Record<string, unknown>;\n },\n options?: { message?: MessageLike; merge?: boolean }\n ): UIMessage<K, PropMap[K] | Partial<PropMap[K]>> {\n const evt: UIMessage<K, PropMap[K] | Partial<PropMap[K]>> = {\n type: \"ui\" as const,\n id: message?.id ?? uuidv4(),\n name: message?.name,\n props: message?.props,\n metadata: {\n merge: options?.merge || undefined,\n run_id: runId,\n tags: config.tags,\n name: config.runName,\n ...message?.metadata,\n ...(options?.message ? { message_id: options.message.id } : null),\n },\n };\n items.push(evt);\n config.writer?.(evt);\n config.configurable?.__pregel_send?.([[stateKey, evt]]);\n return evt;\n }\n\n const handleDelete = (id: string): RemoveUIMessage => {\n const evt: RemoveUIMessage = { type: \"remove-ui\", id };\n items.push(evt);\n config.writer?.(evt);\n config.configurable?.__pregel_send?.([[stateKey, evt]]);\n return evt;\n };\n\n return { push: handlePush, delete: handleDelete, items };\n};\n"],"mappings":";;;;;;;;;;;;AAgBA,MAAa,WACX,QAWA,YAIG;CAEH,MAAM,QAAyC,EAAE;CACjD,MAAM,WAAW,SAAS,YAAY;CAEtC,MAAM,QAAS,OAAO,UAAU,UAAiC,OAAO;AACxE,KAAI,CAAC,MAAO,OAAM,IAAI,MAAM,qBAAqB;CAsBjD,SAAS,WACP,SAMA,WACgD;EAChD,MAAM,MAAsD;GAC1D,MAAM;GACN,IAAI,SAAS,oBAAc;GAC3B,MAAM,SAAS;GACf,OAAO,SAAS;GAChB,UAAU;IACR,OAAOA,WAAS,SAAS;IACzB,QAAQ;IACR,MAAM,OAAO;IACb,MAAM,OAAO;IACb,GAAG,SAAS;IACZ,GAAIA,WAAS,UAAU,EAAE,YAAYA,UAAQ,QAAQ,IAAI,GAAG;IAC7D;GACF;AACD,QAAM,KAAK,IAAI;AACf,SAAO,SAAS,IAAI;AACpB,SAAO,cAAc,gBAAgB,CAAC,CAAC,UAAU,IAAI,CAAC,CAAC;AACvD,SAAO;;CAGT,MAAM,gBAAgB,OAAgC;EACpD,MAAM,MAAuB;GAAE,MAAM;GAAa;GAAI;AACtD,QAAM,KAAK,IAAI;AACf,SAAO,SAAS,IAAI;AACpB,SAAO,cAAc,gBAAgB,CAAC,CAAC,UAAU,IAAI,CAAC,CAAC;AACvD,SAAO;;AAGT,QAAO;EAAE,MAAM;EAAY,QAAQ;EAAc;EAAO"}