mirror of
https://github.com/Abdulazizzn/n8n-enterprise-unlocked.git
synced 2025-12-16 09:36:44 +00:00
feat(core): Add workflow JSON context trimming for AI workflow builder (no-changelog) (#18828)
This commit is contained in:
@@ -47,6 +47,7 @@
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"@n8n/di": "workspace:*",
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"@n8n_io/ai-assistant-sdk": "catalog:",
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"langsmith": "^0.3.45",
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"lodash": "catalog:",
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"n8n-workflow": "workspace:*",
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"picocolors": "catalog:",
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"zod": "catalog:"
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@@ -54,10 +55,10 @@
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"devDependencies": {
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"@n8n/typescript-config": "workspace:*",
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"@types/cli-progress": "^3.11.5",
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"p-limit": "^3.1.0",
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"cli-progress": "^3.12.0",
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"cli-table3": "^0.6.3",
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"jest-mock-extended": "^3.0.4",
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"madge": "^8.0.0"
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"madge": "^8.0.0",
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"p-limit": "^3.1.0"
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}
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}
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@@ -1,3 +1,36 @@
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/**
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* Maximum length of user prompt message in characters.
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* Prevents excessively long messages that could consume too many tokens.
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*/
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export const MAX_AI_BUILDER_PROMPT_LENGTH = 1000; // characters
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/**
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* Token limits for the LLM context window.
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*/
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export const MAX_TOTAL_TOKENS = 200_000; // Total context window size (input + output)
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export const MAX_OUTPUT_TOKENS = 16_000; // Reserved tokens for model response
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export const MAX_INPUT_TOKENS = MAX_TOTAL_TOKENS - MAX_OUTPUT_TOKENS - 10_000; // Available tokens for input (with some buffer to account for estimation errors)
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/**
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* Maximum length of individual parameter value that can be retrieved via tool call.
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* Prevents tool responses from becoming too large and filling up the context.
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*/
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export const MAX_PARAMETER_VALUE_LENGTH = 30_000; // Maximum length of individual parameter value that can be retrieved via tool call
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/**
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* Token threshold for automatically compacting conversation history.
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* When conversation exceeds this limit, older messages are summarized to free up space.
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*/
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export const DEFAULT_AUTO_COMPACT_THRESHOLD_TOKENS = 20_000; // Tokens threshold for auto-compacting the conversation
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/**
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* Maximum token count for workflow JSON after trimming.
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* Used to determine when a workflow is small enough to include in context.
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*/
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export const MAX_WORKFLOW_LENGTH_TOKENS = 30_000; // Tokens
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/**
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* Average character-to-token ratio for Anthropic models.
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* Used for rough token count estimation from character counts.
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*/
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export const AVG_CHARS_PER_TOKEN_ANTHROPIC = 2.5;
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@@ -133,6 +133,27 @@ export class ParameterUpdateError extends OperationalError {
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}
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}
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/**
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* Error thrown when parameter value is too large to retrieve
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*/
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export class ParameterTooLargeError extends OperationalError {
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constructor(
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message: string,
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options?: OperationalErrorOptions & { nodeId?: string; parameter?: string; maxSize?: number },
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) {
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super(message, {
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...options,
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tags: {
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...options?.tags,
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nodeId: options?.nodeId,
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parameter: options?.parameter,
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maxSize: options?.maxSize,
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},
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shouldReport: false,
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});
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}
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}
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/**
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* Error thrown when workflow state is invalid
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*/
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@@ -1,4 +1,6 @@
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// Different LLMConfig type for this file - specific to LLM providers
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import { MAX_OUTPUT_TOKENS } from '@/constants';
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interface LLMProviderConfig {
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apiKey: string;
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baseUrl?: string;
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@@ -51,7 +53,7 @@ export const anthropicClaudeSonnet4 = async (config: LLMProviderConfig) => {
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model: 'claude-sonnet-4-20250514',
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apiKey: config.apiKey,
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temperature: 0,
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maxTokens: 16000,
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maxTokens: MAX_OUTPUT_TOKENS,
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anthropicApiUrl: config.baseUrl,
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clientOptions: {
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defaultHeaders: config.headers,
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@@ -0,0 +1,157 @@
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import { tool } from '@langchain/core/tools';
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import type { Logger } from '@n8n/backend-common';
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import get from 'lodash/get';
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import type { INode, NodeParameterValueType } from 'n8n-workflow';
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import { z } from 'zod';
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import { MAX_PARAMETER_VALUE_LENGTH } from '@/constants';
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import {
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createNodeParameterTooLargeError,
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getCurrentWorkflow,
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getWorkflowState,
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} from '@/tools/helpers';
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import { ValidationError, ToolExecutionError } from '../errors';
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import { createProgressReporter, reportProgress } from './helpers/progress';
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import { createSuccessResponse, createErrorResponse } from './helpers/response';
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import { validateNodeExists, createNodeNotFoundError } from './helpers/validation';
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import type { GetNodeParameterOutput } from '../types/tools';
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/**
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* Schema for getting specific node parameter
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*/
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const getNodeParameterSchema = z.object({
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nodeId: z.string().describe('The ID of the node to extract parameter value'),
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path: z
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.string()
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.describe('Path to the specific parameter to extract, e.g., "url" or "options.baseUrl"'),
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});
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function extractParameterValue(node: INode, path: string): NodeParameterValueType | undefined {
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const nodeParameters = node.parameters;
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return get(nodeParameters, path);
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}
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function formatNodeParameter(path: string, value: NodeParameterValueType): string {
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const parts = [];
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parts.push('<node_parameter>');
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parts.push('<parameter_path>');
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parts.push(path);
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parts.push('</parameter_path>');
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parts.push('<parameter_value>');
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if (typeof value === 'string') {
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parts.push(value);
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} else {
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parts.push(JSON.stringify(value, null, 2));
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}
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parts.push('</parameter_value>');
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parts.push('</node_parameter>');
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return parts.join('\n');
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}
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/**
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* Factory function to create the get node parameter tool
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*/
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export function createGetNodeParameterTool(logger?: Logger) {
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const DISPLAY_TITLE = 'Getting node parameter';
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const dynamicTool = tool(
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(input: unknown, config) => {
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const reporter = createProgressReporter(config, 'get_node_parameter', DISPLAY_TITLE);
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try {
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// Validate input using Zod schema
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const validatedInput = getNodeParameterSchema.parse(input);
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const { nodeId, path } = validatedInput;
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// Report tool start
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reporter.start(validatedInput);
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// Report progress
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logger?.debug(`Looking up parameter ${path} for ${nodeId}...`);
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reportProgress(reporter, `Looking up parameter ${path} for ${nodeId}...`);
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// Get current state
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const state = getWorkflowState();
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const workflow = getCurrentWorkflow(state);
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// Find the node
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const node = validateNodeExists(nodeId, workflow.nodes);
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if (!node) {
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logger?.debug(`Node with ID ${nodeId} not found`);
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const error = createNodeNotFoundError(nodeId);
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reporter.error(error);
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return createErrorResponse(config, error);
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}
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// Extract
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const parameterValue = extractParameterValue(node, path);
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if (parameterValue === undefined) {
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logger?.debug(`Parameter path ${path} not found in node ${node.name}`);
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const error = new ValidationError(
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`Parameter path "${path}" not found in node "${node.name}"`,
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{
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extra: { nodeId, path },
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},
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);
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reporter.error(error);
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return createErrorResponse(config, error);
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}
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// Report completion
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logger?.debug(`Parameter value for path ${path} in node ${node.name} retrieved`);
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const formattedParameterValue = formatNodeParameter(path, parameterValue);
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if (formattedParameterValue.length > MAX_PARAMETER_VALUE_LENGTH) {
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const error = createNodeParameterTooLargeError(nodeId, path, MAX_PARAMETER_VALUE_LENGTH);
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reporter.error(error);
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return createErrorResponse(config, error);
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}
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const output: GetNodeParameterOutput = {
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message: 'Parameter value retrieved successfully',
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};
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reporter.complete(output);
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// Return success response
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return createSuccessResponse(config, formattedParameterValue);
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} catch (error) {
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// Handle validation or unexpected errors
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if (error instanceof z.ZodError) {
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const validationError = new ValidationError('Invalid input parameters', {
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extra: { errors: error.errors },
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});
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reporter.error(validationError);
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return createErrorResponse(config, validationError);
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}
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const toolError = new ToolExecutionError(
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error instanceof Error ? error.message : 'Unknown error occurred',
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{
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toolName: 'get_node_parameter',
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cause: error instanceof Error ? error : undefined,
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},
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);
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reporter.error(toolError);
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return createErrorResponse(config, toolError);
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}
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},
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{
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name: 'get_node_parameter',
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description:
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'Get the value of a specific parameter of a specific node. Use this ONLY to retrieve parameters omitted in the workflow JSON context because of the size.',
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schema: getNodeParameterSchema,
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},
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);
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return {
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tool: dynamicTool,
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displayTitle: DISPLAY_TITLE,
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};
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}
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@@ -4,6 +4,7 @@ import {
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ConnectionError,
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NodeNotFoundError,
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NodeTypeNotFoundError,
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ParameterTooLargeError,
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ValidationError,
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} from '../../errors';
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import type { ToolError } from '../../types/tools';
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@@ -106,6 +107,27 @@ export function createNodeTypeNotFoundError(nodeTypeName: string): ToolError {
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};
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}
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/**
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* Create a node parameter is too large error
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*/
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export function createNodeParameterTooLargeError(
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nodeId: string,
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parameter: string,
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maxSize: number,
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): ToolError {
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const error = new ParameterTooLargeError('Parameter value is too large to retrieve', {
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parameter,
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nodeId,
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maxSize,
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});
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return {
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message: error.message,
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code: 'NODE_PARAMETER_TOO_LARGE',
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details: { nodeId, parameter, maxSize: maxSize.toString() },
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};
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}
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/**
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* Check if a workflow has nodes
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*/
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@@ -370,7 +370,11 @@ Be warm, helpful, and most importantly concise. Focus on actionable information.
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const currentWorkflowJson = `
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<current_workflow_json>
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{workflowJSON}
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</current_workflow_json>`;
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</current_workflow_json>
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<trimmed_workflow_json_note>
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Note: Large property values of the nodes in the workflow JSON above may be trimmed to fit within token limits.
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Use get_node_parameter tool to get full details when needed.
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</trimmed_workflow_json_note>`;
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const currentExecutionData = `
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<current_simplified_execution_data>
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@@ -3,8 +3,11 @@ import { tool } from '@langchain/core/tools';
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import type { INode, INodeTypeDescription, INodeParameters, Logger } from 'n8n-workflow';
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import { z } from 'zod';
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import { trimWorkflowJSON } from '@/utils/trim-workflow-context';
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import { createParameterUpdaterChain } from '../chains/parameter-updater';
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import { ValidationError, ParameterUpdateError, ToolExecutionError } from '../errors';
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import type { UpdateNodeParametersOutput } from '../types/tools';
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import { createProgressReporter, reportProgress } from './helpers/progress';
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import { createSuccessResponse, createErrorResponse } from './helpers/response';
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import { getCurrentWorkflow, getWorkflowState, updateNodeInWorkflow } from './helpers/state';
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@@ -20,7 +23,6 @@ import {
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updateNodeWithParameters,
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fixExpressionPrefixes,
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} from './utils/parameter-update.utils';
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import type { UpdateNodeParametersOutput } from '../types/tools';
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const DISPLAY_TITLE = 'Updating node parameters';
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@@ -81,7 +83,7 @@ async function processParameterUpdates(
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);
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const newParameters = (await parametersChain.invoke({
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workflow_json: workflow,
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workflow_json: trimWorkflowJSON(workflow),
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execution_schema: state.workflowContext?.executionSchema ?? 'NO SCHEMA',
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execution_data: state.workflowContext?.executionData ?? 'NO EXECUTION DATA YET',
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node_id: nodeId,
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@@ -125,3 +125,10 @@ export interface NodeSearchOutput {
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totalResults: number;
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message: string;
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}
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/**
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* Output type for get node parameter tool
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*/
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export interface GetNodeParameterOutput {
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message: string; // This is only to report success or error, without actual value (we don't need to send it to the frontend)
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}
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@@ -0,0 +1,287 @@
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import type { INode } from 'n8n-workflow';
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import { createNode, createWorkflow } from '../../../test/test-utils';
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import type { SimpleWorkflow } from '../../types/workflow';
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import { trimWorkflowJSON } from '../trim-workflow-context';
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describe('trimWorkflowJSON', () => {
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describe('Small workflows', () => {
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it('should not modify small workflows that fit within token limits', () => {
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const workflow: SimpleWorkflow = createWorkflow([
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createNode({
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id: 'node1',
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name: 'HTTP Request',
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type: 'n8n-nodes-base.httpRequest',
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parameters: {
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url: 'https://api.example.com/endpoint',
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method: 'GET',
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headers: {
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'Content-Type': 'application/json',
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},
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},
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}),
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]);
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const result = trimWorkflowJSON(workflow);
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// Workflow should be unchanged
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expect(result).toEqual(workflow);
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expect(result.nodes[0].parameters).toEqual(workflow.nodes[0].parameters);
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});
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it('should handle empty workflows', () => {
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const workflow: SimpleWorkflow = createWorkflow([]);
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const result = trimWorkflowJSON(workflow);
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expect(result.nodes).toEqual([]);
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expect(result.connections).toEqual({});
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});
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it('should handle workflows with nodes but no parameters', () => {
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const workflow: SimpleWorkflow = createWorkflow([
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createNode({
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id: 'node1',
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name: 'Start',
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type: 'n8n-nodes-base.start',
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parameters: {},
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}),
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]);
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const result = trimWorkflowJSON(workflow);
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expect(result).toEqual(workflow);
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});
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});
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describe('Large parameter trimming', () => {
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it('should trim large string parameters', () => {
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const largeString = 'x'.repeat(15000);
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const workflow: SimpleWorkflow = createWorkflow([
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createNode({
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id: 'node1',
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name: 'Code Node',
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type: 'n8n-nodes-base.code',
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parameters: {
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jsCode: largeString,
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smallParam: 'keep this',
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},
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}),
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]);
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const result = trimWorkflowJSON(workflow);
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|
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expect(result.nodes[0].parameters.jsCode).toBe('[Large value omitted]');
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expect(result.nodes[0].parameters.smallParam).toBe('keep this');
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});
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|
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it('should trim large arrays', () => {
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const largeArray = new Array(5000).fill({ item: 'data' });
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const workflow: SimpleWorkflow = createWorkflow([
|
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createNode({
|
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id: 'node1',
|
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name: 'Item Lists',
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type: 'n8n-nodes-base.itemLists',
|
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parameters: {
|
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items: largeArray,
|
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operation: 'aggregateItems',
|
||||
},
|
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}),
|
||||
]);
|
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|
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const result = trimWorkflowJSON(workflow);
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expect(result.nodes[0].parameters.items).toBe('[Large array omitted]');
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expect(result.nodes[0].parameters.operation).toBe('aggregateItems');
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});
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|
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it('should trim large objects', () => {
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const largeObject: Record<string, string> = {};
|
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for (let i = 0; i < 1000; i++) {
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largeObject[`key_${i}`] = `value_${i}`.repeat(20);
|
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}
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||||
|
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const workflow: SimpleWorkflow = createWorkflow([
|
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createNode({
|
||||
id: 'node1',
|
||||
name: 'Function',
|
||||
type: 'n8n-nodes-base.function',
|
||||
parameters: {
|
||||
functionCode: 'return items;',
|
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data: largeObject,
|
||||
},
|
||||
}),
|
||||
]);
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const result = trimWorkflowJSON(workflow);
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expect(result.nodes[0].parameters.data).toBe('[Large object omitted]');
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expect(result.nodes[0].parameters.functionCode).toBe('return items;');
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});
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||||
|
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it('should handle null and undefined parameters correctly', () => {
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const workflow: SimpleWorkflow = createWorkflow([
|
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createNode({
|
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id: 'node1',
|
||||
name: 'Test Node',
|
||||
type: 'n8n-nodes-base.test',
|
||||
parameters: {
|
||||
nullValue: null,
|
||||
// eslint-disable-next-line no-undefined
|
||||
undefinedValue: undefined,
|
||||
validValue: 'test',
|
||||
},
|
||||
}),
|
||||
]);
|
||||
|
||||
const result = trimWorkflowJSON(workflow);
|
||||
|
||||
expect(result.nodes[0].parameters.nullValue).toBeNull();
|
||||
expect(result.nodes[0].parameters.undefinedValue).toBeUndefined();
|
||||
expect(result.nodes[0].parameters.validValue).toBe('test');
|
||||
});
|
||||
});
|
||||
|
||||
describe('Progressive trimming', () => {
|
||||
it('should apply progressively more aggressive trimming for very large workflows', () => {
|
||||
// Create a workflow with parameters at different size levels
|
||||
const medium = 'x'.repeat(3000); // Will be kept at 10000 and 5000 threshold, trimmed at 2000
|
||||
const large = 'y'.repeat(7000); // Will be kept at 10000 threshold, trimmed at 5000
|
||||
const veryLarge = 'z'.repeat(12000); // Will be trimmed at 10000 threshold
|
||||
|
||||
const nodes: INode[] = [];
|
||||
// Add many nodes to create a large workflow
|
||||
for (let i = 0; i < 20; i++) {
|
||||
nodes.push(
|
||||
createNode({
|
||||
id: `node${i}`,
|
||||
name: `Node ${i}`,
|
||||
type: 'n8n-nodes-base.code',
|
||||
parameters: {
|
||||
medium,
|
||||
large,
|
||||
veryLarge,
|
||||
},
|
||||
}),
|
||||
);
|
||||
}
|
||||
|
||||
const workflow: SimpleWorkflow = createWorkflow(nodes);
|
||||
const result = trimWorkflowJSON(workflow);
|
||||
|
||||
// All veryLarge and large parameters should be trimmed
|
||||
result.nodes.forEach((node) => {
|
||||
expect(node.parameters?.veryLarge).toBe('[Large value omitted]');
|
||||
expect(node.parameters?.large).toBe('[Large value omitted]');
|
||||
expect(node.parameters?.medium).toBe(medium);
|
||||
});
|
||||
});
|
||||
});
|
||||
|
||||
describe('Edge cases', () => {
|
||||
it('should preserve connections', () => {
|
||||
const workflow: SimpleWorkflow = {
|
||||
name: 'Connected Workflow',
|
||||
nodes: [
|
||||
createNode({ id: 'node1', name: 'Start' }),
|
||||
createNode({ id: 'node2', name: 'End' }),
|
||||
],
|
||||
connections: {
|
||||
node1: {
|
||||
main: [[{ node: 'node2', type: 'main', index: 0 }]],
|
||||
},
|
||||
},
|
||||
};
|
||||
|
||||
const result = trimWorkflowJSON(workflow);
|
||||
|
||||
// Connections should be preserved
|
||||
expect(result.connections).toEqual(workflow.connections);
|
||||
});
|
||||
|
||||
it('should handle workflows with mixed parameter types', () => {
|
||||
const workflow: SimpleWorkflow = createWorkflow([
|
||||
createNode({
|
||||
id: 'node1',
|
||||
name: 'Mixed Node',
|
||||
type: 'n8n-nodes-base.mixed',
|
||||
parameters: {
|
||||
stringValue: 'normal string',
|
||||
numberValue: 42,
|
||||
booleanValue: true,
|
||||
largeString: 'x'.repeat(15000),
|
||||
array: ['item1', 'item2'],
|
||||
objectValue: { key: 'value' },
|
||||
largeArray: new Array(5000).fill('item'),
|
||||
},
|
||||
}),
|
||||
]);
|
||||
|
||||
const result = trimWorkflowJSON(workflow);
|
||||
|
||||
// Normal parameters should be preserved
|
||||
expect(result.nodes[0].parameters.stringValue).toBe('normal string');
|
||||
expect(result.nodes[0].parameters.numberValue).toBe(42);
|
||||
expect(result.nodes[0].parameters.booleanValue).toBe(true);
|
||||
expect(result.nodes[0].parameters.array).toEqual(['item1', 'item2']);
|
||||
expect(result.nodes[0].parameters.objectValue).toEqual({ key: 'value' });
|
||||
// Large parameters should be trimmed
|
||||
expect(result.nodes[0].parameters.largeString).toBe('[Large value omitted]');
|
||||
expect(result.nodes[0].parameters.largeArray).toBe('[Large array omitted]');
|
||||
});
|
||||
|
||||
it('should handle deeply nested parameters', () => {
|
||||
const workflow: SimpleWorkflow = createWorkflow([
|
||||
createNode({
|
||||
id: 'node1',
|
||||
name: 'Nested Node',
|
||||
type: 'n8n-nodes-base.nested',
|
||||
parameters: {
|
||||
level1: {
|
||||
level2: {
|
||||
level3: {
|
||||
largeData: 'x'.repeat(15000),
|
||||
},
|
||||
},
|
||||
},
|
||||
},
|
||||
}),
|
||||
]);
|
||||
|
||||
const result = trimWorkflowJSON(workflow);
|
||||
|
||||
// The entire nested object gets evaluated as a whole
|
||||
// If the stringified nested object is too large, it gets replaced
|
||||
expect(result.nodes[0].parameters.level1).toBe('[Large object omitted]');
|
||||
});
|
||||
|
||||
it('should return most aggressively trimmed version if nothing fits', () => {
|
||||
// Create an enormous workflow that won't fit even with aggressive trimming
|
||||
const nodes: INode[] = [];
|
||||
for (let i = 0; i < 1000; i++) {
|
||||
nodes.push(
|
||||
createNode({
|
||||
id: `node${i}`,
|
||||
name: `Node ${i}`,
|
||||
type: 'n8n-nodes-base.code',
|
||||
parameters: {
|
||||
data1: 'x'.repeat(2000),
|
||||
data2: 'y'.repeat(2000),
|
||||
data3: 'z'.repeat(2000),
|
||||
},
|
||||
}),
|
||||
);
|
||||
}
|
||||
|
||||
const workflow: SimpleWorkflow = createWorkflow(nodes);
|
||||
const result = trimWorkflowJSON(workflow);
|
||||
|
||||
// All large parameters should be trimmed with the most aggressive threshold (1000)
|
||||
result.nodes.forEach((node) => {
|
||||
expect(node.parameters?.data1).toBe('[Large value omitted]');
|
||||
expect(node.parameters?.data2).toBe('[Large value omitted]');
|
||||
expect(node.parameters?.data3).toBe('[Large value omitted]');
|
||||
});
|
||||
});
|
||||
});
|
||||
});
|
||||
@@ -1,5 +1,8 @@
|
||||
import type { BaseMessage } from '@langchain/core/messages';
|
||||
import { AIMessage } from '@langchain/core/messages';
|
||||
|
||||
import { AVG_CHARS_PER_TOKEN_ANTHROPIC } from '@/constants';
|
||||
|
||||
export type AIMessageWithUsageMetadata = AIMessage & {
|
||||
response_metadata: {
|
||||
usage: {
|
||||
@@ -34,3 +37,32 @@ export function extractLastTokenUsage(messages: unknown[]): TokenUsage | undefin
|
||||
|
||||
return lastAiAssistantMessage.response_metadata.usage;
|
||||
}
|
||||
|
||||
function concatenateMessageContent(messages: BaseMessage[]): string {
|
||||
return messages.reduce((acc: string, message) => {
|
||||
if (typeof message.content === 'string') {
|
||||
return acc + message.content;
|
||||
} else if (Array.isArray(message.content)) {
|
||||
return (
|
||||
acc +
|
||||
message.content.reduce((innerAcc: string, item) => {
|
||||
if (typeof item === 'object' && item !== null && 'text' in item) {
|
||||
return innerAcc + item.text;
|
||||
}
|
||||
return innerAcc;
|
||||
}, '')
|
||||
);
|
||||
}
|
||||
return acc;
|
||||
}, '');
|
||||
}
|
||||
|
||||
export function estimateTokenCountFromString(text: string): number {
|
||||
return Math.ceil(text.length / AVG_CHARS_PER_TOKEN_ANTHROPIC); // Rough estimate
|
||||
}
|
||||
|
||||
export function estimateTokenCountFromMessages(messages: BaseMessage[]): number {
|
||||
const entireInput = concatenateMessageContent(messages);
|
||||
|
||||
return estimateTokenCountFromString(entireInput);
|
||||
}
|
||||
|
||||
@@ -0,0 +1,104 @@
|
||||
import type { INodeParameters, NodeParameterValueType } from 'n8n-workflow';
|
||||
|
||||
import { MAX_WORKFLOW_LENGTH_TOKENS } from '@/constants';
|
||||
import type { SimpleWorkflow } from '@/types';
|
||||
import { estimateTokenCountFromString } from '@/utils/token-usage';
|
||||
|
||||
/**
|
||||
* Thresholds for progressively trimming large parameter values.
|
||||
* Each iteration uses a more aggressive threshold if the workflow is still too large.
|
||||
*/
|
||||
const MAX_PARAMETER_VALUE_LENGTH_THRESHOLDS = [10000, 5000, 2000, 1000];
|
||||
|
||||
/**
|
||||
* Trims a parameter value if it exceeds the specified threshold.
|
||||
* Replaces large values with placeholders to reduce token usage.
|
||||
*
|
||||
* @param value - The parameter value to potentially trim
|
||||
* @param threshold - The maximum allowed length in characters
|
||||
* @returns The original value if under threshold, or a placeholder string if too large
|
||||
*/
|
||||
function trimParameterValue(
|
||||
value: NodeParameterValueType,
|
||||
threshold: number,
|
||||
): NodeParameterValueType {
|
||||
// Handle undefined and null values directly without stringification
|
||||
if (value === undefined || value === null) {
|
||||
return value;
|
||||
}
|
||||
|
||||
const valueStr = JSON.stringify(value);
|
||||
if (valueStr.length > threshold) {
|
||||
// Return type-specific placeholder messages
|
||||
if (typeof value === 'string') {
|
||||
return '[Large value omitted]';
|
||||
} else if (Array.isArray(value)) {
|
||||
return '[Large array omitted]';
|
||||
} else if (typeof value === 'object' && value !== null) {
|
||||
return '[Large object omitted]';
|
||||
}
|
||||
}
|
||||
|
||||
return value;
|
||||
}
|
||||
|
||||
/**
|
||||
* Simplifies a workflow by trimming large parameter values of its nodes based on the given threshold.
|
||||
* Creates a copy of the workflow to avoid mutations.
|
||||
*
|
||||
* @param workflow - The workflow to simplify
|
||||
* @param threshold - The maximum allowed length for parameter values
|
||||
* @returns A new workflow object with trimmed parameters
|
||||
*/
|
||||
function trimWorkflowJsonWithThreshold(
|
||||
workflow: SimpleWorkflow,
|
||||
threshold: number,
|
||||
): SimpleWorkflow {
|
||||
const simplifiedWorkflow = { ...workflow };
|
||||
if (simplifiedWorkflow.nodes) {
|
||||
simplifiedWorkflow.nodes = simplifiedWorkflow.nodes.map((node) => {
|
||||
const simplifiedNode = { ...node };
|
||||
|
||||
// Process each parameter and replace large values with placeholders
|
||||
if (simplifiedNode.parameters) {
|
||||
const simplifiedParameters: INodeParameters = {};
|
||||
for (const [key, value] of Object.entries(simplifiedNode.parameters)) {
|
||||
simplifiedParameters[key] = trimParameterValue(value, threshold);
|
||||
}
|
||||
simplifiedNode.parameters = simplifiedParameters;
|
||||
}
|
||||
|
||||
return simplifiedNode;
|
||||
});
|
||||
}
|
||||
|
||||
return simplifiedWorkflow;
|
||||
}
|
||||
|
||||
/**
|
||||
* Trims workflow JSON to fit within token limits by progressively applying more aggressive trimming.
|
||||
* Iterates through different thresholds until the workflow fits within MAX_WORKFLOW_LENGTH_TOKENS.
|
||||
*
|
||||
* @param workflow - The workflow to trim
|
||||
* @returns A simplified workflow that fits within token limits, or the most aggressively trimmed version
|
||||
*/
|
||||
export function trimWorkflowJSON(workflow: SimpleWorkflow): SimpleWorkflow {
|
||||
// Try progressively more aggressive trimming thresholds
|
||||
for (const threshold of MAX_PARAMETER_VALUE_LENGTH_THRESHOLDS) {
|
||||
const simplified = trimWorkflowJsonWithThreshold(workflow, threshold);
|
||||
const workflowStr = JSON.stringify(simplified);
|
||||
const estimatedTokens = estimateTokenCountFromString(workflowStr);
|
||||
|
||||
// If the workflow fits within the token limit, return it
|
||||
if (estimatedTokens <= MAX_WORKFLOW_LENGTH_TOKENS) {
|
||||
return simplified;
|
||||
}
|
||||
}
|
||||
|
||||
// If even the most aggressive trimming doesn't fit, return the most trimmed version
|
||||
// This ensures we always return something, even if it still exceeds the limit
|
||||
return trimWorkflowJsonWithThreshold(
|
||||
workflow,
|
||||
MAX_PARAMETER_VALUE_LENGTH_THRESHOLDS[MAX_PARAMETER_VALUE_LENGTH_THRESHOLDS.length - 1],
|
||||
);
|
||||
}
|
||||
@@ -13,10 +13,17 @@ import {
|
||||
type NodeExecutionSchema,
|
||||
} from 'n8n-workflow';
|
||||
|
||||
import {
|
||||
DEFAULT_AUTO_COMPACT_THRESHOLD_TOKENS,
|
||||
MAX_AI_BUILDER_PROMPT_LENGTH,
|
||||
MAX_INPUT_TOKENS,
|
||||
} from '@/constants';
|
||||
import { createGetNodeParameterTool } from '@/tools/get-node-parameter.tool';
|
||||
import { trimWorkflowJSON } from '@/utils/trim-workflow-context';
|
||||
|
||||
import { conversationCompactChain } from './chains/conversation-compact';
|
||||
import { workflowNameChain } from './chains/workflow-name';
|
||||
import { DEFAULT_AUTO_COMPACT_THRESHOLD_TOKENS, MAX_AI_BUILDER_PROMPT_LENGTH } from './constants';
|
||||
import { LLMServiceError, ValidationError } from './errors';
|
||||
import { LLMServiceError, ValidationError, WorkflowStateError } from './errors';
|
||||
import { createAddNodeTool } from './tools/add-node.tool';
|
||||
import { createConnectNodesTool } from './tools/connect-nodes.tool';
|
||||
import { createNodeDetailsTool } from './tools/node-details.tool';
|
||||
@@ -27,7 +34,7 @@ import { createUpdateNodeParametersTool } from './tools/update-node-parameters.t
|
||||
import type { SimpleWorkflow } from './types/workflow';
|
||||
import { processOperations } from './utils/operations-processor';
|
||||
import { createStreamProcessor, formatMessages, type BuilderTool } from './utils/stream-processor';
|
||||
import { extractLastTokenUsage } from './utils/token-usage';
|
||||
import { estimateTokenCountFromMessages, extractLastTokenUsage } from './utils/token-usage';
|
||||
import { executeToolsInParallel } from './utils/tool-executor';
|
||||
import { WorkflowState } from './workflow-state';
|
||||
|
||||
@@ -86,6 +93,7 @@ export class WorkflowBuilderAgent {
|
||||
this.logger,
|
||||
this.instanceUrl,
|
||||
),
|
||||
createGetNodeParameterTool(),
|
||||
];
|
||||
}
|
||||
|
||||
@@ -110,10 +118,20 @@ export class WorkflowBuilderAgent {
|
||||
|
||||
const prompt = await mainAgentPrompt.invoke({
|
||||
...state,
|
||||
workflowJSON: trimWorkflowJSON(state.workflowJSON),
|
||||
executionData: state.workflowContext?.executionData ?? {},
|
||||
executionSchema: state.workflowContext?.executionSchema ?? [],
|
||||
instanceUrl: this.instanceUrl,
|
||||
});
|
||||
|
||||
const estimatedTokens = estimateTokenCountFromMessages(prompt.messages);
|
||||
|
||||
if (estimatedTokens > MAX_INPUT_TOKENS) {
|
||||
throw new WorkflowStateError(
|
||||
'The current conversation and workflow state is too large to process. Try to simplify your workflow by breaking it into smaller parts.',
|
||||
);
|
||||
}
|
||||
|
||||
const response = await this.llmSimpleTask.bindTools(tools).invoke(prompt);
|
||||
|
||||
return { messages: [response] };
|
||||
|
||||
170
pnpm-lock.yaml
generated
170
pnpm-lock.yaml
generated
@@ -417,6 +417,9 @@ importers:
|
||||
langsmith:
|
||||
specifier: ^0.3.45
|
||||
version: 0.3.45(@opentelemetry/api@1.9.0)(@opentelemetry/sdk-trace-base@1.30.1(@opentelemetry/api@1.9.0))(openai@5.12.2(ws@8.18.3)(zod@3.25.67))
|
||||
lodash:
|
||||
specifier: 'catalog:'
|
||||
version: 4.17.21
|
||||
n8n-workflow:
|
||||
specifier: workspace:*
|
||||
version: link:../../workflow
|
||||
@@ -999,7 +1002,7 @@ importers:
|
||||
version: 4.3.0
|
||||
'@getzep/zep-cloud':
|
||||
specifier: 1.0.12
|
||||
version: 1.0.12(@langchain/core@0.3.68(@opentelemetry/api@1.9.0)(@opentelemetry/sdk-trace-base@1.30.1(@opentelemetry/api@1.9.0))(openai@5.12.2(ws@8.18.3)(zod@3.25.67)))(encoding@0.1.13)(langchain@0.3.30(316b19288832115574731e049dc7676a))
|
||||
version: 1.0.12(@langchain/core@0.3.68(@opentelemetry/api@1.9.0)(@opentelemetry/sdk-trace-base@1.30.1(@opentelemetry/api@1.9.0))(openai@5.12.2(ws@8.18.3)(zod@3.25.67)))(encoding@0.1.13)(langchain@0.3.30(e7c2f10ddf33088da1e6affdf0fc6c0a))
|
||||
'@getzep/zep-js':
|
||||
specifier: 0.9.0
|
||||
version: 0.9.0
|
||||
@@ -1026,7 +1029,7 @@ importers:
|
||||
version: 0.3.4(@langchain/core@0.3.68(@opentelemetry/api@1.9.0)(@opentelemetry/sdk-trace-base@1.30.1(@opentelemetry/api@1.9.0))(openai@5.12.2(ws@8.18.3)(zod@3.25.67)))(encoding@0.1.13)
|
||||
'@langchain/community':
|
||||
specifier: 'catalog:'
|
||||
version: 0.3.50(ccee17333f80550b1303d83de2b6f79a)
|
||||
version: 0.3.50(7d9026709e640c92cdf2ea22646a0399)
|
||||
'@langchain/core':
|
||||
specifier: 'catalog:'
|
||||
version: 0.3.68(@opentelemetry/api@1.9.0)(@opentelemetry/sdk-trace-base@1.30.1(@opentelemetry/api@1.9.0))(openai@5.12.2(ws@8.18.3)(zod@3.25.67))
|
||||
@@ -1143,7 +1146,7 @@ importers:
|
||||
version: 23.0.1
|
||||
langchain:
|
||||
specifier: 0.3.30
|
||||
version: 0.3.30(316b19288832115574731e049dc7676a)
|
||||
version: 0.3.30(e7c2f10ddf33088da1e6affdf0fc6c0a)
|
||||
lodash:
|
||||
specifier: 'catalog:'
|
||||
version: 4.17.21
|
||||
@@ -3813,12 +3816,6 @@ packages:
|
||||
peerDependencies:
|
||||
'@babel/core': ^7.0.0-0
|
||||
|
||||
'@babel/plugin-syntax-jsx@7.18.6':
|
||||
resolution: {integrity: sha512-6mmljtAedFGTWu2p/8WIORGwy+61PLgOMPOdazc7YoJ9ZCWUyFy3A6CpPkRKLKD1ToAesxX8KGEViAiLo9N+7Q==}
|
||||
engines: {node: '>=6.9.0'}
|
||||
peerDependencies:
|
||||
'@babel/core': ^7.0.0-0
|
||||
|
||||
'@babel/plugin-syntax-jsx@7.25.9':
|
||||
resolution: {integrity: sha512-ld6oezHQMZsZfp6pWtbjaNDF2tiiCYYDqQszHt5VV437lewP9aSi2Of99CK0D0XB21k7FLgnLcmQKyKzynfeAA==}
|
||||
engines: {node: '>=6.9.0'}
|
||||
@@ -5027,10 +5024,6 @@ packages:
|
||||
resolution: {integrity: sha512-VLYKXQmtmuEz6IxJsrZwzG9NvtkQsWNnWMsKxqWNu3+CnfzJQhp0WDDKWLVV9hLKr0l3SLLFRqcYHjhtyuDVxg==}
|
||||
engines: {node: ^14.15.0 || ^16.10.0 || >=18.0.0}
|
||||
|
||||
'@jest/schemas@29.6.0':
|
||||
resolution: {integrity: sha512-rxLjXyJBTL4LQeJW3aKo0M/+GkCOXsO+8i9Iu7eDb6KwtP65ayoDsitrdPBtujxQ88k4wI2FNYfa6TOGwSn6cQ==}
|
||||
engines: {node: ^14.15.0 || ^16.10.0 || >=18.0.0}
|
||||
|
||||
'@jest/schemas@29.6.3':
|
||||
resolution: {integrity: sha512-mo5j5X+jIZmJQveBKeS/clAueipV7KgiX1vMgCxam1RNYiqE1w62n0/tJJnHtjW8ZHcQco5gY85jA3mi0L+nSA==}
|
||||
engines: {node: ^14.15.0 || ^16.10.0 || >=18.0.0}
|
||||
@@ -5058,18 +5051,10 @@ packages:
|
||||
'@jridgewell/gen-mapping@0.3.13':
|
||||
resolution: {integrity: sha512-2kkt/7niJ6MgEPxF0bYdQ6etZaA+fQvDcLKckhy1yIQOzaoKjBBjSj63/aLVjYE3qhRt5dvM+uUyfCg6UKCBbA==}
|
||||
|
||||
'@jridgewell/gen-mapping@0.3.8':
|
||||
resolution: {integrity: sha512-imAbBGkb+ebQyxKgzv5Hu2nmROxoDOXHh80evxdoXNOrvAnVx7zimzc1Oo5h9RlfV4vPXaE2iM5pOFbvOCClWA==}
|
||||
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||||
@@ -25572,7 +25532,7 @@ snapshots:
|
||||
|
||||
eslint-import-resolver-node@0.3.9:
|
||||
dependencies:
|
||||
debug: 3.2.7(supports-color@5.5.0)
|
||||
debug: 3.2.7(supports-color@8.1.1)
|
||||
is-core-module: 2.16.1
|
||||
resolve: 1.22.10
|
||||
transitivePeerDependencies:
|
||||
@@ -25596,7 +25556,7 @@ snapshots:
|
||||
|
||||
eslint-module-utils@2.12.1(@typescript-eslint/parser@8.35.0(eslint@9.29.0(jiti@1.21.7))(typescript@5.9.2))(eslint-import-resolver-node@0.3.9)(eslint-import-resolver-typescript@4.4.3)(eslint@9.29.0(jiti@1.21.7)):
|
||||
dependencies:
|
||||
debug: 3.2.7(supports-color@5.5.0)
|
||||
debug: 3.2.7(supports-color@8.1.1)
|
||||
optionalDependencies:
|
||||
'@typescript-eslint/parser': 8.35.0(eslint@9.29.0(jiti@1.21.7))(typescript@5.9.2)
|
||||
eslint: 9.29.0(jiti@1.21.7)
|
||||
@@ -25635,7 +25595,7 @@ snapshots:
|
||||
array.prototype.findlastindex: 1.2.6
|
||||
array.prototype.flat: 1.3.3
|
||||
array.prototype.flatmap: 1.3.3
|
||||
debug: 3.2.7(supports-color@5.5.0)
|
||||
debug: 3.2.7(supports-color@8.1.1)
|
||||
doctrine: 2.1.0
|
||||
eslint: 9.29.0(jiti@1.21.7)
|
||||
eslint-import-resolver-node: 0.3.9
|
||||
@@ -26074,10 +26034,6 @@ snapshots:
|
||||
dependencies:
|
||||
pend: 1.2.0
|
||||
|
||||
fdir@6.4.6(picomatch@4.0.2):
|
||||
optionalDependencies:
|
||||
picomatch: 4.0.2
|
||||
|
||||
fdir@6.4.6(picomatch@4.0.3):
|
||||
optionalDependencies:
|
||||
picomatch: 4.0.3
|
||||
@@ -26594,7 +26550,7 @@ snapshots:
|
||||
array-parallel: 0.1.3
|
||||
array-series: 0.1.5
|
||||
cross-spawn: 7.0.6
|
||||
debug: 3.2.7(supports-color@5.5.0)
|
||||
debug: 3.2.7(supports-color@8.1.1)
|
||||
transitivePeerDependencies:
|
||||
- supports-color
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||||
|
||||
@@ -26664,7 +26620,7 @@ snapshots:
|
||||
|
||||
groq-sdk@0.19.0(encoding@0.1.13):
|
||||
dependencies:
|
||||
'@types/node': 20.19.1
|
||||
'@types/node': 20.19.10
|
||||
'@types/node-fetch': 2.6.12
|
||||
abort-controller: 3.0.0
|
||||
agentkeepalive: 4.6.0
|
||||
@@ -26945,7 +26901,7 @@ snapshots:
|
||||
'@types/debug': 4.1.12
|
||||
'@types/node': 20.19.10
|
||||
'@types/tough-cookie': 4.0.5
|
||||
axios: 1.11.0(debug@4.4.1)
|
||||
axios: 1.11.0(debug@4.3.6)
|
||||
camelcase: 6.3.0
|
||||
debug: 4.4.1(supports-color@8.1.1)
|
||||
dotenv: 16.6.1
|
||||
@@ -26955,7 +26911,7 @@ snapshots:
|
||||
isstream: 0.1.2
|
||||
jsonwebtoken: 9.0.2
|
||||
mime-types: 2.1.35
|
||||
retry-axios: 2.6.0(axios@1.11.0)
|
||||
retry-axios: 2.6.0(axios@1.11.0(debug@4.4.1))
|
||||
tough-cookie: 4.1.4
|
||||
transitivePeerDependencies:
|
||||
- supports-color
|
||||
@@ -27765,7 +27721,7 @@ snapshots:
|
||||
jest-mock@29.6.2:
|
||||
dependencies:
|
||||
'@jest/types': 29.6.1
|
||||
'@types/node': 20.17.57
|
||||
'@types/node': 20.19.10
|
||||
jest-util: 29.6.2
|
||||
|
||||
jest-pnp-resolver@1.2.2(jest-resolve@29.6.2):
|
||||
@@ -27850,7 +27806,7 @@ snapshots:
|
||||
dependencies:
|
||||
'@babel/core': 7.26.10
|
||||
'@babel/generator': 7.26.10
|
||||
'@babel/plugin-syntax-jsx': 7.18.6(@babel/core@7.26.10)
|
||||
'@babel/plugin-syntax-jsx': 7.25.9(@babel/core@7.26.10)
|
||||
'@babel/plugin-syntax-typescript': 7.20.0(@babel/core@7.26.10)
|
||||
'@babel/types': 7.27.6
|
||||
'@jest/expect-utils': 29.6.2
|
||||
@@ -27883,7 +27839,7 @@ snapshots:
|
||||
jest-util@29.6.2:
|
||||
dependencies:
|
||||
'@jest/types': 29.6.1
|
||||
'@types/node': 20.19.1
|
||||
'@types/node': 20.19.10
|
||||
chalk: 4.1.2
|
||||
ci-info: 3.8.0
|
||||
graceful-fs: 4.2.11
|
||||
@@ -28208,7 +28164,7 @@ snapshots:
|
||||
|
||||
kuler@2.0.0: {}
|
||||
|
||||
langchain@0.3.30(316b19288832115574731e049dc7676a):
|
||||
langchain@0.3.30(e7c2f10ddf33088da1e6affdf0fc6c0a):
|
||||
dependencies:
|
||||
'@langchain/core': 0.3.68(@opentelemetry/api@1.9.0)(@opentelemetry/sdk-trace-base@1.30.1(@opentelemetry/api@1.9.0))(openai@5.12.2(ws@8.18.3)(zod@3.25.67))
|
||||
'@langchain/openai': 0.6.7(@langchain/core@0.3.68(@opentelemetry/api@1.9.0)(@opentelemetry/sdk-trace-base@1.30.1(@opentelemetry/api@1.9.0))(openai@5.12.2(ws@8.18.3)(zod@3.25.67)))(ws@8.18.3)
|
||||
@@ -29999,7 +29955,7 @@ snapshots:
|
||||
|
||||
pdf-parse@1.1.1:
|
||||
dependencies:
|
||||
debug: 3.2.7(supports-color@5.5.0)
|
||||
debug: 3.2.7(supports-color@8.1.1)
|
||||
node-ensure: 0.0.0
|
||||
transitivePeerDependencies:
|
||||
- supports-color
|
||||
@@ -30441,7 +30397,7 @@ snapshots:
|
||||
'@protobufjs/path': 1.1.2
|
||||
'@protobufjs/pool': 1.1.0
|
||||
'@protobufjs/utf8': 1.1.0
|
||||
'@types/node': 20.19.1
|
||||
'@types/node': 20.19.10
|
||||
long: 5.3.2
|
||||
|
||||
proxy-addr@2.0.7:
|
||||
@@ -30962,7 +30918,7 @@ snapshots:
|
||||
onetime: 5.1.2
|
||||
signal-exit: 3.0.7
|
||||
|
||||
retry-axios@2.6.0(axios@1.11.0):
|
||||
retry-axios@2.6.0(axios@1.11.0(debug@4.4.1)):
|
||||
dependencies:
|
||||
axios: 1.11.0(debug@4.3.6)
|
||||
|
||||
@@ -30989,7 +30945,7 @@ snapshots:
|
||||
|
||||
rhea@1.0.24:
|
||||
dependencies:
|
||||
debug: 3.2.7(supports-color@5.5.0)
|
||||
debug: 3.2.7(supports-color@8.1.1)
|
||||
transitivePeerDependencies:
|
||||
- supports-color
|
||||
|
||||
@@ -32193,8 +32149,8 @@ snapshots:
|
||||
|
||||
tinyglobby@0.2.14:
|
||||
dependencies:
|
||||
fdir: 6.4.6(picomatch@4.0.2)
|
||||
picomatch: 4.0.2
|
||||
fdir: 6.4.6(picomatch@4.0.3)
|
||||
picomatch: 4.0.3
|
||||
|
||||
tinypool@1.1.1: {}
|
||||
|
||||
@@ -32411,7 +32367,7 @@ snapshots:
|
||||
|
||||
ts-type@3.0.1(ts-toolbelt@9.6.0):
|
||||
dependencies:
|
||||
'@types/node': 20.19.1
|
||||
'@types/node': 20.19.10
|
||||
ts-toolbelt: 9.6.0
|
||||
tslib: 2.8.1
|
||||
typedarray-dts: 1.0.0
|
||||
|
||||
Reference in New Issue
Block a user