From 2dea1ef0e54c5184489c1c530e478f2755d50f6c Mon Sep 17 00:00:00 2001
From: Rich-Harris <richard.a.harris@gmail.com>
Date: Sat, 31 Oct 2015 23:39:02 -0400
Subject: [PATCH] add aggressive mode

---
 src/Bundle.js                          |  7 ++++++-
 test/form/aggressive/_config.js        |  6 ++++++
 test/form/aggressive/_expected/amd.js  |  9 +++++++++
 test/form/aggressive/_expected/cjs.js  |  7 +++++++
 test/form/aggressive/_expected/es6.js  |  5 +++++
 test/form/aggressive/_expected/iife.js |  9 +++++++++
 test/form/aggressive/_expected/umd.js  | 13 +++++++++++++
 test/form/aggressive/foo.js            |  9 +++++++++
 test/form/aggressive/main.js           |  3 +++
 9 files changed, 67 insertions(+), 1 deletion(-)
 create mode 100644 test/form/aggressive/_config.js
 create mode 100644 test/form/aggressive/_expected/amd.js
 create mode 100644 test/form/aggressive/_expected/cjs.js
 create mode 100644 test/form/aggressive/_expected/es6.js
 create mode 100644 test/form/aggressive/_expected/iife.js
 create mode 100644 test/form/aggressive/_expected/umd.js
 create mode 100644 test/form/aggressive/foo.js
 create mode 100644 test/form/aggressive/main.js

diff --git a/src/Bundle.js b/src/Bundle.js
index 4130909..0947286 100644
--- a/src/Bundle.js
+++ b/src/Bundle.js
@@ -50,6 +50,7 @@ export default class Bundle {
 
 		this.external = options.external || [];
 		this.onwarn = options.onwarn || onwarn;
+		this.aggressive = options.aggressive;
 
 		// TODO strictly speaking, this only applies with non-ES6, non-default-only bundles
 		[ 'module', 'exports' ].forEach( global => this.assumedGlobals[ global ] = true );
@@ -74,7 +75,11 @@ export default class Bundle {
 				});
 
 				// mark statements that should appear in the bundle
-				this.modules.forEach( module => module.markStatements() );
+				if ( this.aggressive ) {
+					entryModule.markStatements();
+				} else {
+					this.modules.forEach( module => module.markStatements() );
+				}
 
 				this.orderedModules = this.sort();
 				this.deconflict();
diff --git a/test/form/aggressive/_config.js b/test/form/aggressive/_config.js
new file mode 100644
index 0000000..bafb1e0
--- /dev/null
+++ b/test/form/aggressive/_config.js
@@ -0,0 +1,6 @@
+module.exports = {
+	description: 'ignores side-effects outside entry module in aggressive mode',
+	options: {
+		aggressive: true
+	}
+}
diff --git a/test/form/aggressive/_expected/amd.js b/test/form/aggressive/_expected/amd.js
new file mode 100644
index 0000000..eac4f98
--- /dev/null
+++ b/test/form/aggressive/_expected/amd.js
@@ -0,0 +1,9 @@
+define(function () { 'use strict';
+
+	function foo () {
+		return 42;
+	}
+
+	assert.equal( foo(), 42 );
+
+});
\ No newline at end of file
diff --git a/test/form/aggressive/_expected/cjs.js b/test/form/aggressive/_expected/cjs.js
new file mode 100644
index 0000000..a547fb6
--- /dev/null
+++ b/test/form/aggressive/_expected/cjs.js
@@ -0,0 +1,7 @@
+'use strict';
+
+function foo () {
+	return 42;
+}
+
+assert.equal( foo(), 42 );
\ No newline at end of file
diff --git a/test/form/aggressive/_expected/es6.js b/test/form/aggressive/_expected/es6.js
new file mode 100644
index 0000000..f32ad00
--- /dev/null
+++ b/test/form/aggressive/_expected/es6.js
@@ -0,0 +1,5 @@
+function foo () {
+	return 42;
+}
+
+assert.equal( foo(), 42 );
\ No newline at end of file
diff --git a/test/form/aggressive/_expected/iife.js b/test/form/aggressive/_expected/iife.js
new file mode 100644
index 0000000..3ba1058
--- /dev/null
+++ b/test/form/aggressive/_expected/iife.js
@@ -0,0 +1,9 @@
+(function () { 'use strict';
+
+	function foo () {
+		return 42;
+	}
+
+	assert.equal( foo(), 42 );
+
+})();
\ No newline at end of file
diff --git a/test/form/aggressive/_expected/umd.js b/test/form/aggressive/_expected/umd.js
new file mode 100644
index 0000000..1eb1ef2
--- /dev/null
+++ b/test/form/aggressive/_expected/umd.js
@@ -0,0 +1,13 @@
+(function (global, factory) {
+	typeof exports === 'object' && typeof module !== 'undefined' ? factory() :
+	typeof define === 'function' && define.amd ? define(factory) :
+	factory();
+}(this, function () { 'use strict';
+
+	function foo () {
+		return 42;
+	}
+
+	assert.equal( foo(), 42 );
+
+}));
\ No newline at end of file
diff --git a/test/form/aggressive/foo.js b/test/form/aggressive/foo.js
new file mode 100644
index 0000000..16f57e9
--- /dev/null
+++ b/test/form/aggressive/foo.js
@@ -0,0 +1,9 @@
+function x () {
+	console.log( 'side-effect' );
+}
+
+x();
+
+export function foo () {
+	return 42;
+}
diff --git a/test/form/aggressive/main.js b/test/form/aggressive/main.js
new file mode 100644
index 0000000..66c6979
--- /dev/null
+++ b/test/form/aggressive/main.js
@@ -0,0 +1,3 @@
+import { foo } from './foo';
+
+assert.equal( foo(), 42 );