function checkAppName()

in packages/create-react-kotlin-app/createReactApp.js [494:526]

31 lines of code
3 McCabe index (conditional complexity)


function checkAppName(appName) {
  const validationResult = validateProjectName(appName);
  if (!validationResult.validForNewPackages) {
    console.error(
      `Could not create a project called ${chalk.red(
        `"${appName}"`
      )} because of npm naming restrictions:`
    );
    printValidationResults(validationResult.errors);
    printValidationResults(validationResult.warnings);
    process.exit(1);
  }

  // TODO: there should be a single place that holds the dependencies
  const dependencies = ['react', 'react-dom'];
  const devDependencies = ['react-scripts'];
  const allDependencies = dependencies.concat(devDependencies).sort();
  if (allDependencies.indexOf(appName) >= 0) {
    console.error(
      chalk.red(
        `We cannot create a project called ${chalk.green(
          appName
        )} because a dependency with the same name exists.\n` +
          `Due to the way npm works, the following names are not allowed:\n\n`
      ) +
        chalk.cyan(
          allDependencies.map((depName) => `  ${depName}`).join('\n')
        ) +
        chalk.red('\n\nPlease choose a different project name.')
    );
    process.exit(1);
  }
}