From 80d377043f26aeaa1438591fc817adbecf6f4ee5 Mon Sep 17 00:00:00 2001
From: hyrious <hyrious@outlook.com>
Date: Wed, 12 Jul 2023 11:46:36 +0800
Subject: [PATCH 1/2] fix: correct sourcemap when enabled treeshake

closes #890
---
 src/plugins/tree-shaking.ts |  4 ++--
 test/index.test.ts          | 15 +++++++++++++++
 2 files changed, 17 insertions(+), 2 deletions(-)

diff --git a/src/plugins/tree-shaking.ts b/src/plugins/tree-shaking.ts
index 935d24a6..8e3602dd 100644
--- a/src/plugins/tree-shaking.ts
+++ b/src/plugins/tree-shaking.ts
@@ -33,7 +33,7 @@ export const treeShakingPlugin = ({
               return false
             },
             load(id) {
-              if (id === info.path) return code
+              if (id === info.path) return { code, map: info.map }
             },
           },
         ],
@@ -47,7 +47,7 @@ export const treeShakingPlugin = ({
         interop: 'auto',
         format: this.format,
         file: 'out.js',
-        sourcemap: !!this.options.sourcemap,
+        sourcemap: this.options.sourcemap ? 'hidden' : false,
         name
       })
 
diff --git a/test/index.test.ts b/test/index.test.ts
index df2c19d7..a0d17953 100644
--- a/test/index.test.ts
+++ b/test/index.test.ts
@@ -1364,3 +1364,18 @@ test('should emit a declaration file per format (type: module)', async () => {
   });
   expect(outFiles).toEqual(['input.cjs', 'input.d.cts', 'input.d.ts', 'input.js'])
 });
+
+test.only('should emit correct sourcemap when enabled treeshake', async () => {
+  const { getFileContent } = await run(getTestName(), {
+    'input.ts': `if (true) function foo() { return 1 }; foo()`,
+    'tsup.config.ts': `
+        export default {
+          entry: ['src/input.ts'],
+          format: ['esm'],
+          treeshake: true,
+          sourcemap: true,
+        }`,
+  })
+  const content = await getFileContent('dist/input.mjs');
+  expect(content).not.toContain('//# sourceMappingURL=out.js.map');
+});

From 60f335f394b75942e2936ed6f2e52f6ca1d4ed8e Mon Sep 17 00:00:00 2001
From: hyrious <hyrious@outlook.com>
Date: Fri, 14 Jul 2023 23:16:05 +0800
Subject: [PATCH 2/2] remove test.only()

---
 test/index.test.ts | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/test/index.test.ts b/test/index.test.ts
index a0d17953..f05c83d3 100644
--- a/test/index.test.ts
+++ b/test/index.test.ts
@@ -1365,7 +1365,7 @@ test('should emit a declaration file per format (type: module)', async () => {
   expect(outFiles).toEqual(['input.cjs', 'input.d.cts', 'input.d.ts', 'input.js'])
 });
 
-test.only('should emit correct sourcemap when enabled treeshake', async () => {
+test('should emit correct sourcemap when enabled treeshake', async () => {
   const { getFileContent } = await run(getTestName(), {
     'input.ts': `if (true) function foo() { return 1 }; foo()`,
     'tsup.config.ts': `