From 4ed9dcd738ee29289add6b42fbf0764205f6626b Mon Sep 17 00:00:00 2001
From: Benyamin Galeano <benyamin.galeano@gmail.com>
Date: Wed, 31 Aug 2022 18:48:28 -0600
Subject: [PATCH 1/2] =?UTF-8?q?refactor:=20=F0=9F=92=A1=20replace=20the=20?=
 =?UTF-8?q?{}=20for=20null=20value?=
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

"typeof null" is "object", replacing this we can know if the
configuration is not found
---
 lib/getConfig.js | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/lib/getConfig.js b/lib/getConfig.js
index 7d68a45e..d360e04d 100644
--- a/lib/getConfig.js
+++ b/lib/getConfig.js
@@ -41,7 +41,7 @@ const findOverrides = (root) => {
     return findOverrides(parent);
   }
 
-  return {};
+  return null;
 };
 
 const getConfig = (root) => {

From d2b0286ef312c88a1722a3b94a42c2537fa0f3fe Mon Sep 17 00:00:00 2001
From: Benyamin Galeano <benyamin.galeano@gmail.com>
Date: Wed, 31 Aug 2022 20:24:10 -0600
Subject: [PATCH 2/2] =?UTF-8?q?feat:=20=F0=9F=8E=B8=20configuration=20can?=
 =?UTF-8?q?=20be=20a=20function?=
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

from config function can access to default and parent configurations
---
 lib/getConfig.js | 48 ++++++++++++++++++++++++++++++++++++++++++++----
 1 file changed, 44 insertions(+), 4 deletions(-)

diff --git a/lib/getConfig.js b/lib/getConfig.js
index d360e04d..a9d490ce 100644
--- a/lib/getConfig.js
+++ b/lib/getConfig.js
@@ -18,7 +18,10 @@ const findOverrides = (root) => {
     const filename = path.resolve(dir, file);
 
     if (fs.existsSync(filename) && fs.statSync(filename).isFile()) {
-      return require(filename);
+      return {
+        dir,
+        overrides: require(filename)
+      };
     }
   }
 
@@ -31,7 +34,10 @@ const findOverrides = (root) => {
       const changelog = require(pkgFilename).config.commitizen.changelog;
 
       if (changelog) {
-        return changelog;
+        return {
+          dir,
+          overrides: changelog
+        };
       }
     // eslint-disable-next-line no-empty
     } catch (error) {}
@@ -41,11 +47,45 @@ const findOverrides = (root) => {
     return findOverrides(parent);
   }
 
-  return null;
+  return {
+    dir,
+    overrides: null
+  };
+};
+
+const getConfigContext = (currentConfigDir) => {
+  const memo = {parentConfig: null};
+
+  return {
+    defaultConfig: defaults,
+    get parentConfig () {
+      if (memo.parentConfig) {
+        return memo.parentConfig;
+      }
+
+      const parent = path.resolve(currentConfigDir, '..');
+
+      // eslint-disable-next-line no-use-before-define
+      memo.parentConfig = getConfig(parent);
+
+      return memo.parentConfig;
+    }
+  };
+};
+
+const getOverrides = (root) => {
+  // eslint-disable-next-line prefer-const
+  let {overrides, dir: overridesDir} = findOverrides(root);
+
+  if (typeof overrides === 'function') {
+    overrides = overrides(getConfigContext(overridesDir));
+  }
+
+  return overrides;
 };
 
 const getConfig = (root) => {
-  const overrides = findOverrides(root);
+  const overrides = getOverrides(root);
 
   if (typeof overrides !== 'object') {
     signale.fatal(new TypeError('Expected changelog config to be an object.'));