storybook/lib/cli/generators/ANGULAR/index.js

import mergeDirs from 'merge-dirs';
import path from 'path';
import {
  getVersions,
  getPackageJson,
  writePackageJson,
  installBabel,
  getAngularAppTsConfigJson,
  writeAngularAppTsConfig,
} from '../../lib/helpers';

async function addDependencies(npmOptions) {
  const [
    storybookVersion,
    notesVersion,
    actionsVersion,
    linksVersion,
    addonsVersion,
  ] = await getVersions(
    npmOptions,
    '@storybook/angular',
    '@storybook/addon-notes',
    '@storybook/addon-actions',
    '@storybook/addon-links',
    '@storybook/addons'
  );

  const packageJson = getPackageJson();

  await installBabel(npmOptions, packageJson);
  packageJson.dependencies = packageJson.dependencies || {};
  packageJson.devDependencies = packageJson.devDependencies || {};
  packageJson.devDependencies['@storybook/angular'] = storybookVersion;
  packageJson.devDependencies['@storybook/addon-notes'] = notesVersion;
  packageJson.devDependencies['@storybook/addon-actions'] = actionsVersion;
  packageJson.devDependencies['@storybook/addon-links'] = linksVersion;
  packageJson.devDependencies['@storybook/addons'] = addonsVersion;

  packageJson.scripts = packageJson.scripts || {};
  packageJson.scripts.storybook = 'start-storybook -p 6006';
  packageJson.scripts['build-storybook'] = 'build-storybook';

  writePackageJson(packageJson);
}

function editAngularAppTsConfig() {
  const tsConfigJson = getAngularAppTsConfigJson();
  if (tsConfigJson) {
    const { exclude } = tsConfigJson;
    tsConfigJson.exclude = [...exclude, '**/*.stories.ts'];
    writeAngularAppTsConfig(tsConfigJson);
  }
}

export default async npmOptions => {
  mergeDirs(path.resolve(__dirname, 'template'), '.', 'overwrite');

  await addDependencies(npmOptions);
  editAngularAppTsConfig();
};