Linear Streamable MCP Server

/** * Validation utilities for issue fields */ import type { LinearClient } from '@linear/sdk'; /** * Validate and process estimate value based on team settings */ export async function validateEstimate( estimate: number | undefined, teamId: string | undefined, teamAllowZeroCache: Map<string, boolean>, client: LinearClient, allowZeroEstimate?: boolean, ): Promise<number | undefined> { if (typeof estimate !== 'number') { return undefined; } if (estimate > 0) { return estimate; } if (estimate === 0) { let allowZero = allowZeroEstimate === true; if (!allowZero && teamId) { // Check cache first if (teamAllowZeroCache.has(teamId)) { allowZero = teamAllowZeroCache.get(teamId) === true; } else { // Fetch team settings try { const team = await client.team(teamId); allowZero = ((team as unknown as { issueEstimationAllowZero?: boolean }) .issueEstimationAllowZero ?? false) === true; teamAllowZeroCache.set(teamId, allowZero); } catch { allowZero = false; } } } if (allowZero) { return 0; } } return undefined; } /** * Validate priority value. * Linear priority: 0 = No priority, 1 = Urgent, 2 = High, 3 = Normal, 4 = Low. */ export function validatePriority( priority: number | string | undefined, ): number | undefined { if (typeof priority === 'undefined') { return undefined; } const n = typeof priority === 'string' ? Number(priority) : priority; // Validate range 0-4 per Linear API if (Number.isInteger(n) && n >= 0 && n <= 4) { return n; } return undefined; } /** * Clean payload by removing empty strings and invalid values */ export function cleanPayload<T extends Record<string, unknown>>(input: T): Partial<T> { const cleaned: Partial<T> = {}; for (const [key, value] of Object.entries(input)) { // Skip empty strings if (typeof value === 'string' && value.trim() === '') { continue; } // Skip undefined if (value === undefined) { continue; } cleaned[key as keyof T] = value as T[keyof T]; } return cleaned; } /** * Validate that a field should be included in the payload */ export function shouldIncludeField(value: unknown, allowEmpty = false): boolean { // Always exclude undefined if (value === undefined) { return false; } // Handle strings if (typeof value === 'string') { return allowEmpty || value.trim() !== ''; } // Handle arrays if (Array.isArray(value)) { return allowEmpty || value.length > 0; } // Include all other values return true; }