Mermaid-Grammer-Inspector

/** * Mermaid syntax checker */ import fs from "node:fs"; import path from "node:path"; import { fileURLToPath } from "node:url"; import { type ParseResult, ParseStatus, parseMermaid } from "./parse"; const __dirname = path.dirname(fileURLToPath(import.meta.url)); /** * Check Mermaid diagram syntax * @param text Mermaid syntax text * @returns Check result */ export const checkMermaid = async (text: string): Promise<ParseResult> => { // Input validation if (typeof text !== "string") { return { status: ParseStatus.FAIL, message: "Input must be a string", }; } // Check for empty or whitespace-only content if (!text.trim()) { return { status: ParseStatus.FAIL, message: "Input cannot be empty or contain only whitespace", }; } const inputFilePath = path.join(__dirname, "input.mmd"); try { fs.writeFileSync(inputFilePath, text, { encoding: "utf-8" }); return await parseMermaid(); } catch (error) { const errorMessage = error instanceof Error ? error.message : "File write failed"; return { status: ParseStatus.FAIL, message: `Unable to write temporary file: ${errorMessage}`, }; } };