From 1ee55274ba0468a68d53c85713a7944429e319f2 Mon Sep 17 00:00:00 2001
From: Lukas Taegert-Atkinson <lukas.taegert-atkinson@tngtech.com>
Date: Sun, 16 Oct 2022 06:43:11 +0200
Subject: [PATCH] Ignore hashhbang comments

---
 src/ast/nodes/Program.ts                | 7 ++++++-
 test/form/samples/hashbang/_config.js   | 3 +++
 test/form/samples/hashbang/_expected.js | 3 +++
 test/form/samples/hashbang/main.js      | 3 +++
 test/form/samples/hashbang/other.js     | 2 ++
 5 files changed, 17 insertions(+), 1 deletion(-)
 create mode 100644 test/form/samples/hashbang/_config.js
 create mode 100644 test/form/samples/hashbang/_expected.js
 create mode 100644 test/form/samples/hashbang/main.js
 create mode 100644 test/form/samples/hashbang/other.js

diff --git a/src/ast/nodes/Program.ts b/src/ast/nodes/Program.ts
index a14b7459473..d252875a4c6 100644
--- a/src/ast/nodes/Program.ts
+++ b/src/ast/nodes/Program.ts
@@ -32,8 +32,13 @@ export default class Program extends NodeBase {
 	}
 
 	render(code: MagicString, options: RenderOptions): void {
+		let start = this.start;
+		if (code.original.startsWith('#!')) {
+			start = Math.min(code.original.indexOf('\n') + 1, this.end);
+			code.remove(0, start);
+		}
 		if (this.body.length > 0) {
-			renderStatementList(this.body, code, this.start, this.end, options);
+			renderStatementList(this.body, code, start, this.end, options);
 		} else {
 			super.render(code, options);
 		}
diff --git a/test/form/samples/hashbang/_config.js b/test/form/samples/hashbang/_config.js
new file mode 100644
index 00000000000..f19d68bd304
--- /dev/null
+++ b/test/form/samples/hashbang/_config.js
@@ -0,0 +1,3 @@
+module.exports = {
+	description: 'supports input files with leading hashbang comment'
+};
diff --git a/test/form/samples/hashbang/_expected.js b/test/form/samples/hashbang/_expected.js
new file mode 100644
index 00000000000..180a2a59255
--- /dev/null
+++ b/test/form/samples/hashbang/_expected.js
@@ -0,0 +1,3 @@
+console.log('other');
+
+console.log('main');
diff --git a/test/form/samples/hashbang/main.js b/test/form/samples/hashbang/main.js
new file mode 100644
index 00000000000..243bdbbad4d
--- /dev/null
+++ b/test/form/samples/hashbang/main.js
@@ -0,0 +1,3 @@
+#!/usr/bin/env node
+import './other';
+console.log('main');
diff --git a/test/form/samples/hashbang/other.js b/test/form/samples/hashbang/other.js
new file mode 100644
index 00000000000..b25867312ac
--- /dev/null
+++ b/test/form/samples/hashbang/other.js
@@ -0,0 +1,2 @@
+#!/usr/bin/env node
+console.log('other');
\ No newline at end of file