Create base.js

Author: Awk34

src/generators/base.js

@@ -0,0 +1,90 @@
+'use strict';
+import path from 'path';
+import {exec} from 'child_process';
+import _ from 'lodash';
+import s from 'underscore.string';
+import Promise from 'bluebird';
+import semver from 'semver';
+import {appName} from './util.js';
+import {Base} from 'yeoman-generator';
+
+// extend lodash with underscore.string
+_.mixin(s.exports());
+
+/**
+ * Run the given command in a child process
+ * @param {string} cmd - command to run
+ * @returns {Promise}
+ */
+function runCmd(cmd) {
+  return new Promise((resolve, reject) => {
+    exec(cmd, {}, function(err, stdout) {
+      if(err) {
+        console.error(stdout);
+        return reject(err);
+      }
+
+      return resolve(stdout);
+    });
+  });
+}
+
+export class BaseGenerator extends Base {
+  initializing() {
+    this.argument('name', { type: String, required: false });
+
+    this.lodash = _;
+
+    var yoCheckPromise;
+
+    // CI won't have yo installed
+    if(!process.env.CI) {
+      yoCheckPromise = runCmd('yo --version').then(stdout => {
+        if(!semver.satisfies(semver.clean(stdout), '>= 1.7.1')) {
+          throw new Error('ERROR: You need to update yo to at least 1.7.1 (npm i -g yo)');
+        }
+      });
+    } else {
+      yoCheckPromise = Promise.resolve();
+    }
+
+    try {
+      this.appname = require(path.join(process.cwd(), 'bower.json')).name;
+    } catch(err) {
+      this.appname = path.basename(process.cwd());
+    }
+    this.appname = _.slugify(_.humanize(this.appname));
+    this.scriptAppName = this.config.get('moduleName') || _.camelize(this.appname) + appName(this);
+
+    this.cameledName = _.camelize(this.name);
+    this.classedName = _.classify(this.name);
+    this.kebabName = _.kebabCase(this.name);
+
+    this.filters = this.config.get('filters');
+    this.extensions = this.config.get('extensions');
+    this.hasFilter = filter => this.filters.indexOf(filter) !== -1;
+    this.hasExtension = ext => this.extensions.indexOf(ext) !== -1;
+
+    this.scriptExt = this.hasExtension('ts') ? 'ts' : 'js';
+    this.templateExt = this.hasExtension('pug') ? 'pug' : 'html';
+    this.styleExt = this.hasExtension('sass') ? 'scss' :
+      this.hasExtension('less') ? 'less' :
+      this.hasExtension('stylus') ? 'styl' :
+      'css';
+
+    // dynamic assertion statements
+    this.expect = () => this.hasFilter('expect') ? 'expect(' : '';
+    this.to = () => this.hasFilter('expect') ? ').to' : '.should';
+
+    if(typeof this.env.options.appPath === 'undefined') {
+      try {
+        this.env.options.appPath = require(path.join(process.cwd(), 'bower.json')).appPath;
+      } catch(err) {}
+      this.env.options.appPath = this.env.options.appPath || 'app';
+    }
+
+    this.sourceRoot(path.join(__dirname, '..', '/templates'));
+
+    return yoCheckPromise;
+  }
+}