prettier

import { format, resolveConfig } from 'prettier'; import * as fs from 'node:fs/promises'; import * as path from 'node:path'; async function formatFile(filePath: string) { const fileContent = await fs.readFile(filePath, 'utf8'); const config = await resolveConfig(filePath); if (!config) { console.warn(`No Prettier config found for ${filePath}. Using default options.`); } const formattedContent = await format(fileContent, { ...config, filepath: filePath, // Essential for Prettier to infer parser and apply file-specific overrides }); console.log(`Original content of ${filePath}:\n---\n${fileContent}\n---`); console.log(`Formatted content of ${filePath}:\n---\n${formattedContent}\n---`); // To write back to file: // await fs.writeFile(filePath, formattedContent, 'utf8'); // console.log(`Formatted ${filePath} and wrote changes.`); } // Create a dummy file for demonstration async function setupAndRun() { const dummyFilePath = path.join(process.cwd(), 'temp-example.ts'); const unformattedCode = ` const myVariable = "hello world"; function sayHello(name: string) { console.log('Hello, ' + name );} sayHello (myVariable) `; await fs.writeFile(dummyFilePath, unformattedCode, 'utf8'); console.log(`Created unformatted file: ${dummyFilePath}`); await formatFile(dummyFilePath); // Clean up await fs.unlink(dummyFilePath); console.log(`Cleaned up ${dummyFilePath}`); } setupAndRun().catch(console.error);