generator_component.js

const chokidar = require('chokidar');
const fs = require('fs');

const templates = {
  index: name =>
    `import React from 'react';

const ${name} = () => (
  <div className="${name.toLowerCase()}">
    // TODO: write rest of ${name} component
  </div>
);
export default ${name};`,
  test: name => `// TODO: TDD
import { shallow, render } from 'enzyme';
import renderer from 'react-test-renderer';
import React from 'react';
import ${name} from '.';
const component = <${name} />;
describe('The ${name} component', () => {
  it('renders correctly', () => {
    const wrapper = render(component);
    expect(wrapper.hasClass('${name.toLowerCase()}')).toBeTruthy();
    const tree = renderer.create(component).toJSON();
    expect(tree).toMatchSnapshot();
  });
});`,
  sass: name => `.${name.toLowerCase()}
  color: initial
  background: initial`,
};

const fileExists = path => file => fs.existsSync(`${path}/${file}`);

const writeToPath = path => (file, content) => {
  const filePath = `${path}/${file}`;

  fs.writeFile(filePath, content, err => {
    if (err) throw err;
    console.log('Created file: ', filePath);
    return true;
  });
};

function createFiles(path, name) {
  const files = {
    index: 'index.jsx',
    test: `${name}.test.js`,
  };

  if (name !== 'components') {
    const writeFile = writeToPath(path);
    const toFileMissingBool = file => !fileExists(path)(file);
    const checkAllMissing = (acc, cur) => acc && cur;

    const noneExist = Object.values(files)
      .map(toFileMissingBool)
      .reduce(checkAllMissing);

    if (noneExist) {
      console.log(`Detected new component: ${name}, ${path}`);
      Object.entries(files).forEach(([type, fileName]) => {
        writeFile(fileName, templates[type](name));
      });
    }
  }
}

// createFiles(path, name);