src/app/generators/travis/index.js

import chalk from 'chalk';

import Commander from '../../lib/commander';
import BaseGenerator from '../base-generator';

export default class extends BaseGenerator {
  constructor(...args) {
    super(...args);

    this.commander = new Commander({
      spawnSync: this.spawnCommandSync.bind(this),
    });
  }

  writing() {
    this.fs.copyTpl(
      this.templatePath('_travis.yml'),
      this.destinationPath('.travis.yml'),
      this.options
    );
  }

  async install() {
    if (process.env.NODE_ENV === 'test') return;

    this.log('Installing TravisCI...');

    const { npmDeploy, semanticRelease } = this.options;

    this._installTravis();

    if (npmDeploy) {
      this._installTravisNpmToken();

      if (semanticRelease) {
        this._installTravisGithubToken();
      }
    }

    this.log('\n');
  }

  end() {
    const { repository } = this.options;

    this.log(
      chalk`  Visit your TravisCI url: {underline.cyan https://travis-ci.org/${repository}}`
    );
  }

  _installTravis() {
    const { repository, githubToken } = this.options;

    this.commander.run([
      'gem install travis --no-document --quiet',
      `travis login --github-token ${githubToken}`,
      `travis enable -r ${repository}`,
    ]);
  }

  _installTravisNpmToken() {
    const { repository, npmToken } = this.options;

    this.commander.run(`travis env set NPM_TOKEN ${npmToken} -r ${repository}`);
  }

  _installTravisGithubToken() {
    const { repository, githubToken } = this.options;

    this.commander.run(
      `travis env set GH_TOKEN ${githubToken} -r ${repository}`
    );
  }
}