MCP ts-morph Refactoring Tools

import { Project, type SourceFile } from "ts-morph"; import * as path from "node:path"; import { NewLineKind } from "typescript"; import logger from "../../utils/logger"; export function initializeProject(tsconfigPath: string): Project { const absoluteTsconfigPath = path.resolve(tsconfigPath); return new Project({ tsConfigFilePath: absoluteTsconfigPath, manipulationSettings: { newLineKind: NewLineKind.LineFeed, }, }); } export function getChangedFiles(project: Project): SourceFile[] { return project.getSourceFiles().filter((sf) => !sf.isSaved()); } export async function saveProjectChanges( project: Project, signal?: AbortSignal, ): Promise<void> { signal?.throwIfAborted(); try { await project.save(); } catch (error) { if (error instanceof Error && error.name === "AbortError") { throw error; } const message = error instanceof Error ? error.message : String(error); throw new Error(`ファイル保存中にエラーが発生しました: ${message}`); } } export function getTsConfigPaths( project: Project, ): Record<string, string[]> | undefined { try { const options = project.compilerOptions.get(); if (!options.paths) { return undefined; } if (typeof options.paths !== "object") { logger.warn( { paths: options.paths }, "Compiler options 'paths' is not an object.", ); return undefined; } const validPaths: Record<string, string[]> = {}; for (const [key, value] of Object.entries(options.paths)) { if ( Array.isArray(value) && value.every((item) => typeof item === "string") ) { validPaths[key] = value; } else { logger.warn( { pathKey: key, pathValue: value }, "Invalid format for paths entry, skipping.", ); } } return validPaths; } catch (error) { logger.error({ err: error }, "Failed to get compiler options or paths"); return undefined; } } export function getTsConfigBaseUrl(project: Project): string | undefined { try { const options = project.compilerOptions.get(); return options.baseUrl; } catch (error) { logger.error({ err: error }, "Failed to get compiler options baseUrl"); return undefined; } }