function foo(str: string) { return str; } foo('noop'); // To recreate (Windows only): // // const filePath = require.resolve('./test/fixtures/source-map/ts-node.ts'); // const compiled = require('ts-node').create({ transpileOnly: true }).compile(fs.readFileSync(filePath, 'utf8'), filePath); // fs.writeFileSync('test/fixtures/source-map/ts-node-win32.js', compiled);