Function checkSyntax

lib/internal/main/check_syntax.js:59–77

(source, filename)

}

async function checkSyntax(source, filename) {
  let format;
  if (filename === '[stdin]' || filename === '[eval]') {
    format = (getOptionValue('--input-type') === 'module') ? 'module' : 'commonjs';
  } else {
    const { defaultResolve } = require('internal/modules/esm/resolve');
    const { defaultGetFormat } = require('internal/modules/esm/get_format');
    const { url } = await defaultResolve(pathToFileURL(filename).toString());
    format = await defaultGetFormat(new URL(url));
  }

  if (format === 'module') {
    const { ModuleWrap } = internalBinding('module_wrap');
    new ModuleWrap(filename, undefined, source, 0, 0);
    return;
  }

  wrapSafe(filename, source, undefined, format);
}