From 499303b9fe137ad03cb09f162ac1f1520cf17f38 Mon Sep 17 00:00:00 2001
From: Izaak Schroeder <izaak.schroeder@gmail.com>
Date: Thu, 10 Nov 2016 17:25:41 -0800
Subject: [PATCH 1/3] Pass `dirname` as extra metadata to preset constructor.

Sometimes a preset would like to know where it should resolve relative paths from (e.g. https://github.com/tleunen/babel-plugin-module-resolver) and this extra information makes that possible.
---
 .../src/transformation/file/options/option-manager.js           | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/packages/babel-core/src/transformation/file/options/option-manager.js b/packages/babel-core/src/transformation/file/options/option-manager.js
index d492eeda6638..f649341305fe 100644
--- a/packages/babel-core/src/transformation/file/options/option-manager.js
+++ b/packages/babel-core/src/transformation/file/options/option-manager.js
@@ -308,7 +308,7 @@ export default class OptionManager {
             (presetLoc || "a preset") + " which does not accept options.");
         }
 
-        if (typeof val === "function") val = val(context, options);
+        if (typeof val === "function") val = val(context, options, {dirname});
 
         if (typeof val !== "object") {
           throw new Error(`Unsupported preset format: ${val}.`);

From 29fcb7806ab51aba88ae9eff5fc938ce7a6321d9 Mon Sep 17 00:00:00 2001
From: Moti Zilberman <motiz88@gmail.com>
Date: Sun, 19 Feb 2017 09:52:34 +0000
Subject: [PATCH 2/3] Lint fix

---
 .../src/transformation/file/options/option-manager.js           | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/packages/babel-core/src/transformation/file/options/option-manager.js b/packages/babel-core/src/transformation/file/options/option-manager.js
index a0cfc68e2960..4746260a3685 100644
--- a/packages/babel-core/src/transformation/file/options/option-manager.js
+++ b/packages/babel-core/src/transformation/file/options/option-manager.js
@@ -299,7 +299,7 @@ export default class OptionManager {
             (presetLoc || "a preset") + " which does not accept options.");
         }
 
-        if (typeof val === "function") val = val(context, options, {dirname});
+        if (typeof val === "function") val = val(context, options, { dirname });
 
         if (typeof val !== "object") {
           throw new Error(`Unsupported preset format: ${val}.`);

From cc860310568495bc92c7ba31b52fe5270a0f976a Mon Sep 17 00:00:00 2001
From: Moti Zilberman <moti@digital-detox.co.uk>
Date: Sun, 19 Feb 2017 10:53:03 +0000
Subject: [PATCH 3/3] Test for `dirname` passed into preset constructor
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

This adds a check for `dirname`’s existence and correctness to the
`resolve-addons-relative-to-file` test, and serves as a minimal example
of a path-aware preset.
---
 .../node_modules/addons/preset.js                        | 9 +++++++--
 1 file changed, 7 insertions(+), 2 deletions(-)

diff --git a/packages/babel-core/test/fixtures/resolution/resolve-addons-relative-to-file/node_modules/addons/preset.js b/packages/babel-core/test/fixtures/resolution/resolve-addons-relative-to-file/node_modules/addons/preset.js
index a1af16e41fac..e08f4b1c612d 100644
--- a/packages/babel-core/test/fixtures/resolution/resolve-addons-relative-to-file/node_modules/addons/preset.js
+++ b/packages/babel-core/test/fixtures/resolution/resolve-addons-relative-to-file/node_modules/addons/preset.js
@@ -1,5 +1,10 @@
-module.exports = {
-  plugins: [plugin],
+module.exports = function preset (context, options, fileContext) {
+  if (/resolve-addons-relative-to-file$/.test(fileContext.dirname)) {
+    return {
+      plugins: [plugin],
+    };
+  }
+  return {};
 };
 
 function plugin () {