feat: understands --config <FILE> option in `conventionalChangelogA…

…rgs` (#927)

* feat: understands `--config <FILE>` option in `conventionalChangelogArgs`

* Update packages/shipjs/src/step/prepare/__tests__/updateChangelog.spec.js

Co-authored-by: Haroen Viaene <hello@haroen.me>

* fix test case

Co-authored-by: Eunjae Lee <eunjae.lee@algolia.com>
Co-authored-by: Haroen Viaene <hello@haroen.me>
Co-authored-by: shipjs <shipjs@test.com>

packages/shipjs/src/step/prepare/__tests__/updateChangelog.spec.js

@@ -0,0 +1,26 @@
+const path = require('path');
+import { prepareParams } from '../updateChangelog';
+import { parseArgs } from '../../../util';
+import tempWrite from 'temp-write';
+
+describe('prepareParams', () => {
+  it('loads configuration from --config option', () => {
+    parseArgs.mockImplementation(jest.requireActual('../../../util').parseArgs);
+    const config = {
+      writerOpts: {
+        headerPartial: '## {{version}}',
+      },
+    };
+    const configString = `module.exports = ${JSON.stringify(config)};`;
+    const configPath = tempWrite.sync(configString);
+    const configDir = path.basename(path.dirname(configPath));
+
+    const { args } = prepareParams({
+      dir: configDir,
+      conventionalChangelogArgs: `-i CHANGELOG.md -s --config ${configPath}`,
+      revisionRange: '1.0.0..1.0.1',
+      reject: () => {},
+    });
+    expect(args.config).toEqual(config);
+  });
+});

packages/shipjs/src/step/prepare/updateChangelog.js

@@ -78,7 +78,7 @@ const argSpec = {
   '-t': '--tag-prefix',
 };
 
-function prepareParams({
+export function prepareParams({
   dir,
   conventionalChangelogArgs,
   releaseCount,
@@ -118,6 +118,9 @@ function prepareParams({
   }
   const templateContext =
     args.context && require(path.resolve(dir, args.context));
+  if (args.config) {
+    args.config = require(path.resolve(dir, args.config));
+  }
   return { args, gitRawCommitsOpts, templateContext };
 }