From bea524c3e9c411b0988754f7aed9927fc4c3535d Mon Sep 17 00:00:00 2001
From: Kallinikos Milonakis <kallinikosmil@gmail.com>
Date: Wed, 2 Sep 2026 13:42:25 +0300
Subject: [PATCH 1/2] fix(init): use posix separators for the paths written
 into package.json

`bob init` builds the values for `main`, `module`, `types` and `exports` by
interpolating `path.join` into a `./...` string. On Windows that yields
backslashes, so a freshly initialised library gets:

    "main": "./lib\module\index.js",
    "exports": { ".": { "default": "./lib\module\index.js" } }

Those fields are module specifiers rather than filesystem paths and are
always forward-slashed, so the manifest is wrong and `exports` in particular
will not resolve.

Join them with `path.posix` instead. The committed snapshot in init.test.ts
already encodes the correct forward-slash output and now matches on Windows
without being regenerated.
---
 packages/react-native-builder-bob/src/init.ts | 13 ++++++++-----
 1 file changed, 8 insertions(+), 5 deletions(-)

diff --git a/packages/react-native-builder-bob/src/init.ts b/packages/react-native-builder-bob/src/init.ts
index fe363f78d..934698b72 100644
--- a/packages/react-native-builder-bob/src/init.ts
+++ b/packages/react-native-builder-bob/src/init.ts
@@ -149,6 +149,9 @@ export async function init() {
       ? targets[0]
       : undefined;
 
+  // These end up in `main`, `module`, `types` and `exports` in package.json,
+  // which are specifiers rather than filesystem paths and always use forward
+  // slashes, so they are joined with `path.posix` regardless of platform.
   const entries: {
     [key in 'commonjs' | 'module']?: string;
   } = {};
@@ -157,11 +160,11 @@ export async function init() {
 
   if (targets.includes('module')) {
     esm = true;
-    entries.module = `./${path.join(output, 'module', 'index.js')}`;
+    entries.module = `./${path.posix.join(output, 'module', 'index.js')}`;
   }
 
   if (targets.includes('commonjs')) {
-    entries.commonjs = `./${path.join(output, 'commonjs', 'index.js')}`;
+    entries.commonjs = `./${path.posix.join(output, 'commonjs', 'index.js')}`;
   }
 
   const types: {
@@ -170,7 +173,7 @@ export async function init() {
 
   if (targets.includes('typescript')) {
     if (targets.includes('commonjs') && targets.includes('module')) {
-      types.require = `./${path.join(
+      types.require = `./${path.posix.join(
         output,
         'typescript',
         'commonjs',
@@ -178,7 +181,7 @@ export async function init() {
         'index.d.ts'
       )}`;
 
-      types.import = `./${path.join(
+      types.import = `./${path.posix.join(
         output,
         'typescript',
         'module',
@@ -186,7 +189,7 @@ export async function init() {
         'index.d.ts'
       )}`;
     } else {
-      types.require = `./${path.join(
+      types.require = `./${path.posix.join(
         output,
         'typescript',
         source,

From 57b458edb416efc2cfb22f8636016297d566f994 Mon Sep 17 00:00:00 2001
From: Satyajit Sahoo <satyajit.happy@gmail.com>
Date: Tue, 8 Sep 2026 11:33:29 +0200
Subject: [PATCH 2/2] ci: run unit tests on windows

---
 .github/workflows/check-project.yml           | 18 +++++++++++++++---
 packages/react-native-builder-bob/src/init.ts |  3 ---
 2 files changed, 15 insertions(+), 6 deletions(-)

diff --git a/.github/workflows/check-project.yml b/.github/workflows/check-project.yml
index 7e7d2d08b..e4c44ac32 100644
--- a/.github/workflows/check-project.yml
+++ b/.github/workflows/check-project.yml
@@ -28,8 +28,20 @@ jobs:
       - name: Typecheck
         run: yarn typecheck
 
-      - name: Test
-        run: yarn test
-
       - name: Build packages
         run: yarn lerna run prepare
+
+  test:
+    strategy:
+      matrix:
+        os: [ubuntu-latest, windows-latest]
+    runs-on: ${{ matrix.os }}
+    steps:
+      - name: Checkout
+        uses: actions/checkout@08c6903cd8c0fde910a37f88322edcfb5dd907a8 # v5.0.0
+
+      - name: Setup
+        uses: ./.github/actions/setup
+
+      - name: Test
+        run: yarn test
diff --git a/packages/react-native-builder-bob/src/init.ts b/packages/react-native-builder-bob/src/init.ts
index 934698b72..434eef924 100644
--- a/packages/react-native-builder-bob/src/init.ts
+++ b/packages/react-native-builder-bob/src/init.ts
@@ -149,9 +149,6 @@ export async function init() {
       ? targets[0]
       : undefined;
 
-  // These end up in `main`, `module`, `types` and `exports` in package.json,
-  // which are specifiers rather than filesystem paths and always use forward
-  // slashes, so they are joined with `path.posix` regardless of platform.
   const entries: {
     [key in 'commonjs' | 'module']?: string;
   } = {};