From 09de27b31bf81b4f50d21e98533cb750e297ffd6 Mon Sep 17 00:00:00 2001
From: Jakub Jankowski <jakubj@stoplight.io>
Date: Tue, 20 Jul 2021 21:25:43 +0200
Subject: [PATCH] feat: enable custom packages encapsulation

---
 src/commands/build/index.ts  |  1 +
 src/commands/bundle/index.ts | 16 ++++++++++++----
 2 files changed, 13 insertions(+), 4 deletions(-)

diff --git a/src/commands/build/index.ts b/src/commands/build/index.ts
index cdcd825..078c87b 100644
--- a/src/commands/build/index.ts
+++ b/src/commands/build/index.ts
@@ -85,6 +85,7 @@ export default class BuildCommand extends Command {
       'dependenciesMeta',
       'pkg',
       'type',
+      'exports',
     ]);
 
     releasePkg.main = 'index.js';
diff --git a/src/commands/bundle/index.ts b/src/commands/bundle/index.ts
index f4bb3a2..ea425f1 100644
--- a/src/commands/bundle/index.ts
+++ b/src/commands/bundle/index.ts
@@ -47,15 +47,23 @@ export default class BundleCommand extends BuildCommand {
   protected preparePackageJson() {
     const pkg = super.preparePackageJson();
 
+    const exports = {
+      require: './index.js',
+      import: './index.mjs',
+    };
+
     Object.assign(pkg, {
       type: 'commonjs',
       main: './index.js',
       // webpack v4 support
       module: './index.esm.js',
-      exports: {
-        require: './index.js',
-        import: './index.mjs',
-      },
+      exports:
+        'exports' in pkg && typeof pkg.exports === 'object'
+          ? {
+              ...pkg.exports,
+              '.': exports,
+            }
+          : exports,
     });
 
     return pkg;