fix(cli): Use latest version when stable unavailable (algolia/create-…

…instantsearch-app#57)

.gitignore

@@ -15,3 +15,4 @@ yarn-error.log*
 
 # release
 /build
+/sample

src/cli/__tests__/getConfiguration.test.js

@@ -1,6 +1,12 @@
 const path = require('path');
+const utils = require('../../utils');
 const getConfiguration = require('../getConfiguration');
 
+jest.mock('../../utils', () => ({
+  ...require.requireActual('../../utils'),
+  fetchLibraryVersions: jest.fn(() => Promise.resolve(['1.0.0'])),
+}));
+
 test('without template throws', async () => {
   expect.assertions(1);
 
@@ -42,6 +48,20 @@ test('with options from arguments and prompt merge', async () => {
   );
 });
 
+test('without stable version available', async () => {
+  utils.fetchLibraryVersions.mockImplementationOnce(() =>
+    Promise.resolve(['1.0.0-beta.0'])
+  );
+
+  const configuration = await getConfiguration({
+    answers: {
+      template: 'InstantSearch.js',
+    },
+  });
+
+  expect(configuration.libraryVersion).toBe('1.0.0-beta.0');
+});
+
 test('with config file overrides all options', async () => {
   const loadJsonFileFn = jest.fn(x => Promise.resolve(x));
   const ignoredOptions = {

src/cli/getConfiguration.js

@@ -28,7 +28,12 @@ module.exports = async function getConfiguration({
 
     libraryVersion = await fetchLibraryVersions(
       templateConfig.libraryName
-    ).then(latestSemver);
+    ).then(
+      versions =>
+        // Return the lastest available version when
+        // the stable version is not available
+        latestSemver(versions) || versions[0]
+    );
   }
 
   return {