Hyperlane MCP Server

import fs from 'fs'; import path from 'path'; import { DocumentOptions, ParseOptions, SchemaOptions, ToJSOptions, parse, stringify as yamlStringify, } from 'yaml'; const yamlParse = ( content: string, options?: ParseOptions & DocumentOptions & SchemaOptions & ToJSOptions ) => parse(content, { maxAliasCount: -1, ...options }); export type FileFormat = 'yaml' | 'json'; function isFile(filepath: string) { if (!filepath) return false; try { return fs.existsSync(filepath) && fs.lstatSync(filepath).isFile(); } catch { console.log(`Error checking for file: ${filepath}`); return false; } } function readFileAtPath(filepath: string) { if (!isFile(filepath)) { throw Error(`File doesn't exist at ${filepath}`); } return fs.readFileSync(filepath, 'utf8'); } function writeFileAtPath(filepath: string, value: string) { const dirname = path.dirname(filepath); if (!isFile(dirname)) { fs.mkdirSync(dirname, { recursive: true }); } fs.writeFileSync(filepath, value); } function readJson<T>(filepath: string): T { return JSON.parse(readFileAtPath(filepath)) as T; } function readYaml<T>(filepath: string): T { return yamlParse(readFileAtPath(filepath)) as T; } function writeYaml(filepath: string, obj: any) { writeFileAtPath( filepath, yamlStringify(obj, { indent: 2, sortMapEntries: true }) + '\n' ); } export function readYamlOrJson<T>(filepath: string, format?: FileFormat): T { return resolveYamlOrJsonFn(filepath, readJson, readYaml, format); } export function writeYamlOrJson( filepath: string, obj: Record<string, any>, format?: FileFormat ) { return resolveYamlOrJsonFn( filepath, (f: string) => writeJson(f, obj), (f: string) => writeYaml(f, obj), format ); } function writeJson(filepath: string, obj: any) { writeFileAtPath(filepath, JSON.stringify(obj, null, 2) + '\n'); } function resolveYamlOrJsonFn( filepath: string, jsonFn: any, yamlFn: any, format?: FileFormat ) { const fileFormat = resolveFileFormat(filepath, format); if (!fileFormat) { throw new Error(`Invalid file format for ${filepath}`); } if (fileFormat === 'json') { return jsonFn(filepath); } return yamlFn(filepath); } function resolveFileFormat( filepath?: string, format?: FileFormat ): FileFormat | undefined { if (!filepath) { return format; } if (format === 'json' || filepath?.endsWith('.json')) { return 'json'; } if ( format === 'yaml' || filepath?.endsWith('.yaml') || filepath?.endsWith('.yml') ) { return 'yaml'; } return undefined; }