fix: revert "use cz-conventional-changelog as default adapter (#778)"

This reverts commit e6b75cb.

It was supposed to be released as a breaking change.

Author: felipecrs

Diff for: README.md

@@ -43,13 +43,13 @@ When you're working in a Commitizen friendly repository, you'll be prompted to f
 
 [![Add and commit with Commitizen](https://github.com/commitizen/cz-cli/raw/master/meta/screenshots/add-commit.png)](https://github.com/commitizen/cz-cli/raw/master/meta/screenshots/add-commit.png)
 
-### If your repo is NOT Commitizen-friendly
+### If your repo is NOT Commitizen friendly:
 
-If you're **not** working in a Commitizen friendly repository, then `git cz` will work just the same as `git commit` but `npx cz` will use the [cz-conventional-changelog](https://github.com/commitizen/cz-conventional-changelog) adapter. To fix this, you need to first [make your repo Commitizen-friendly](#making-your-repo-commitizen-friendly).
+If you're **not** working in a Commitizen friendly repository, then `git cz` will work just the same as `git commit` but `npx cz` will use the [streamich/git-cz](https://github.com/streamich/git-cz) adapter. To fix this, you need to first [make your repo Commitizen-friendly](#making-your-repo-commitizen-friendly)
 
 ## Making your repo Commitizen-friendly
 
-For this example, we'll be setting up our repo to use [Conventional Commits convention](https://www.conventionalcommits.org/) through the [conventional-changelog](https://github.com/conventional-changelog/conventional-changelog) [commitizen adapter](https://github.com/commitizen/cz-conventional-changelog).
+For this example, we'll be setting up our repo to use [AngularJS's commit message convention](https://github.com/angular/angular.js/blob/master/DEVELOPERS.md#-git-commit-guidelines) also known as [conventional-changelog](https://github.com/ajoslin/conventional-changelog).
 
 First, install the Commitizen cli tools:
 
@@ -86,7 +86,7 @@ The above command does three things for you.
   }
 ```
 
-Alternatively, commitizen configs may be added to a `.czrc` or `.cz.json` file:
+Alternatively, commitizen configs may be added to a .czrc file:
 
 ```json
 {

Diff for: package-lock.json

@@ -74,7 +74,7 @@
   },
   "dependencies": {
     "cachedir": "2.2.0",
-    "cz-conventional-changelog": "3.3.0",
+    "cz-conventional-changelog": "3.2.0",
     "dedent": "0.7.0",
     "detect-indent": "6.0.0",
     "find-node-modules": "2.0.0",

Diff for: package.json

@@ -1,5 +1,5 @@
 import { configLoader } from '../commitizen';
-import { gitCz as useGitCzStrategy } from './strategies';
+import { git as useGitStrategy, gitCz as useGitCzStrategy } from './strategies';
 
 export {
   bootstrap
@@ -9,12 +9,19 @@ export {
  * This is the main cli entry point.
  * environment may be used for debugging.
  */
-function bootstrap(environment = {}, argv = process.argv) {
+function bootstrap (environment = {}, argv = process.argv) {
 
   // Get cli args
   let rawGitArgs = argv.slice(2, argv.length);
 
-  let adapterConfig = environment.config || configLoader.load() || { path: 'cz-conventional-changelog' };
+  let adapterConfig = environment.config || configLoader.load();
 
-  useGitCzStrategy(rawGitArgs, environment, adapterConfig);
+  // Choose a strategy based on the existance the adapter config
+  if (typeof adapterConfig !== 'undefined') {
+    // This tells commitizen we're in business
+    useGitCzStrategy(rawGitArgs, environment, adapterConfig);
+  } else {
+    // This tells commitizen that it is not needed, just use git
+    useGitStrategy(rawGitArgs, environment);
+  }
 }

Diff for: src/cli/git-cz.js

@@ -8,6 +8,7 @@ describe('git-cz', () => {
 
   beforeEach(() => {
     fakeStrategies = {
+      git: sinon.spy(),
       gitCz: sinon.spy()
     }
 
@@ -48,18 +49,17 @@ describe('git-cz', () => {
       });
 
       describe('and the config is not returned from configLoader.load', () => {
-        it('tells commitizen to use the default adapter', () => {
+        it('tells commitizen to use the git strategy', () => {
           bootstrap({});
-
-          expect(fakeStrategies.gitCz.args[0][2].path).to.equal('cz-conventional-changelog');
+          expect(fakeStrategies.git.called).to.equal(true);
         });
       });
     });
 
     describe('when argv is overridden', () => {
       it('uses the overridden argv', () => {
         bootstrap({}, ['node', 'git-cz', 'index.js']);
-        expect(fakeStrategies.gitCz.args[0][0][0]).to.equal('index.js');
+        expect(fakeStrategies.git.args[0][0][0]).to.equal('index.js');
       });
     })
   });