Add homepage option. Open browser with package homepage value.

Add test if the is no homepage.

__tests__/actions/__snapshots__/get.spec.js.snap

@@ -1,5 +1,7 @@
 // Jest Snapshot v1, https://goo.gl/fbAQLP
 
+exports[`get --homepage should throw NotFoundHomepageError if there is no "homepage" in package.json 1`] = `"Could not find homepage link for module \\"test\\"."`;
+
 exports[`get should disable colors 1`] = `
 "test
 └─┬ another

__tests__/actions/get.spec.js

@@ -72,6 +72,16 @@ describe('get', () => {
     expect(output).toMatchSnapshot();
   });
 
+  it('--homepage should throw NotFoundHomepageError if there is no "homepage" in package.json', () => {
+    const workspace = resolveWorkspace('single-module');
+
+    try {
+      getAction(workspace, 'test', { homepage: true });
+    } catch (e) {
+      expect(e.message).toMatchSnapshot();
+    }
+  });
+
   describe('--open', () => {
     it('should open module file directory when --open flag used', () => {
       const workspace = resolveWorkspace('three-levels-deep');

src/actions/get.js

@@ -1,12 +1,14 @@
 const isEmpty = require('lodash/isEmpty');
+const opn = require('opn');
 const getSuggestions = require('../suggest/get-suggestions');
 const NotFoundModuleError = require('../errors/not-found-module-error');
+const NotFoundHomepageError = require('../errors/not-found-homepage-error');
 const renderModuleOccurrences = require('../render/render-module-occurrences');
 const openPackage = require('./helpers/open');
 
 module.exports = (workspace, name, options = {}) => {
   const moduleOccurrences = workspace.getModuleOccurrences(name);
-  const { open } = options;
+  const { open, homepage } = options;
 
   if (isEmpty(moduleOccurrences)) {
     const modulesNames = workspace.getModulesNames();
@@ -19,5 +21,15 @@ module.exports = (workspace, name, options = {}) => {
     return openPackage(moduleOccurrences, workspace.root);
   }
 
+  if (homepage) {
+    // take only the first option
+    const [nodeModule] = workspace.getModuleOccurrences(name);
+    const homepageUrl = nodeModule.packageJson.homepage;
+
+    if (!homepageUrl) throw new NotFoundHomepageError(name);
+
+    return opn(homepageUrl, { wait: false });
+  }
+
   return renderModuleOccurrences(moduleOccurrences, options);
 };

src/cli.js

@@ -21,7 +21,8 @@ try {
     )
     .option('-d, --debug', 'see full error messages, mostly for debugging')
     .option('-o, --open', 'open editor at the module directory')
-    .option('--disable-colors', 'minimize color and styling usage in output');
+    .option('--disable-colors', 'minimize color and styling usage in output')
+    .option('-h, --homepage', 'open the homepage of a certain module');
 
   program
     .command('list')