From 103f278cfcaeeca87448428dc9ffd77f2db7b124 Mon Sep 17 00:00:00 2001
From: Rich Harris <richard.a.harris@gmail.com>
Date: Sat, 5 May 2018 16:48:49 -0400
Subject: [PATCH] update tests

---
 src/compile/dom/Block.ts                      |  5 +-
 src/compile/nodes/Slot.ts                     | 14 ++-
 test/cli/samples/basic/expected/Main.js       | 20 ++--
 .../samples/custom-element/expected/Main.js   | 24 ++---
 test/cli/samples/dev/expected/Main.js         | 20 ++--
 .../samples/dir-sourcemap/expected/Main.js    | 18 +---
 .../dir-sourcemap/expected/Main.js.map        |  2 +-
 .../samples/dir-sourcemap/expected/Widget.js  | 20 ++--
 .../dir-sourcemap/expected/Widget.js.map      |  2 +-
 test/cli/samples/dir-subdir/expected/Main.js  | 18 +---
 .../dir-subdir/expected/widget/Widget.js      | 20 ++--
 test/cli/samples/dir/expected/Main.js         | 18 +---
 test/cli/samples/dir/expected/Widget.js       | 20 ++--
 test/cli/samples/globals/expected/Main.js     | 24 ++---
 .../samples/sourcemap-inline/expected/Main.js | 22 ++---
 test/cli/samples/sourcemap/expected/Main.js   | 20 ++--
 .../samples/sourcemap/expected/Main.js.map    |  2 +-
 test/cli/samples/store/expected/Main.js       | 24 ++---
 test/js/samples/action/expected-bundle.js     | 16 +--
 test/js/samples/action/expected.js            |  8 +-
 .../bind-width-height/expected-bundle.js      | 19 ++--
 test/js/samples/bind-width-height/expected.js | 11 ++-
 .../expected-bundle.js                        | 18 ++--
 .../expected.js                               | 12 +--
 .../component-static-array/expected-bundle.js | 16 +--
 .../component-static-array/expected.js        |  8 +-
 .../expected-bundle.js                        | 16 +--
 .../component-static-immutable/expected.js    |  8 +-
 .../expected-bundle.js                        | 16 +--
 .../component-static-immutable2/expected.js   |  8 +-
 .../component-static/expected-bundle.js       | 16 +--
 test/js/samples/component-static/expected.js  |  8 +-
 .../computed-collapsed-if/expected-bundle.js  | 10 +-
 .../samples/computed-collapsed-if/expected.js |  2 -
 .../css-media-query/expected-bundle.js        | 18 ++--
 test/js/samples/css-media-query/expected.js   | 10 +-
 .../expected-bundle.js                        | 22 ++---
 .../css-shadow-dom-keyframes/expected.js      | 14 +--
 .../deconflict-builtins/expected-bundle.js    | 39 +++-----
 .../samples/deconflict-builtins/expected.js   | 29 +++---
 .../deconflict-globals/expected-bundle.js     | 10 +-
 .../js/samples/deconflict-globals/expected.js |  2 -
 .../expected-bundle.js                        | 18 ++--
 .../expected.js                               | 12 +--
 .../samples/do-use-dataset/expected-bundle.js | 22 ++---
 test/js/samples/do-use-dataset/expected.js    | 16 +--
 .../expected-bundle.js                        | 22 ++---
 .../dont-use-dataset-in-legacy/expected.js    | 16 +--
 .../expected-bundle.js                        | 18 ++--
 .../dont-use-dataset-in-svg/expected.js       | 12 +--
 .../expected-bundle.js                        | 44 ++++-----
 .../each-block-changed-check/expected.js      | 34 +++----
 .../event-handlers-custom/expected-bundle.js  | 16 +--
 .../samples/event-handlers-custom/expected.js |  8 +-
 .../head-no-whitespace/expected-bundle.js     | 14 +--
 .../js/samples/head-no-whitespace/expected.js |  6 +-
 .../if-block-no-update/expected-bundle.js     | 43 ++++----
 .../js/samples/if-block-no-update/expected.js | 37 ++++---
 .../if-block-simple/expected-bundle.js        | 33 +++----
 test/js/samples/if-block-simple/expected.js   | 27 +++---
 .../expected-bundle.js                        | 18 ++--
 .../expected.js                               | 12 +--
 .../expected-bundle.js                        | 18 ++--
 .../inline-style-optimized-url/expected.js    | 12 +--
 .../inline-style-optimized/expected-bundle.js | 18 ++--
 .../inline-style-optimized/expected.js        | 12 +--
 .../expected-bundle.js                        | 22 ++---
 .../inline-style-unoptimized/expected.js      | 16 +--
 .../expected-bundle.js                        | 16 +--
 .../input-without-blowback-guard/expected.js  |  8 +-
 .../legacy-input-type/expected-bundle.js      | 18 ++--
 test/js/samples/legacy-input-type/expected.js | 10 +-
 .../samples/media-bindings/expected-bundle.js | 16 +--
 test/js/samples/media-bindings/expected.js    |  8 +-
 .../non-imported-component/expected-bundle.js | 22 ++---
 .../non-imported-component/expected.js        | 14 ++-
 .../samples/setup-method/expected-bundle.js   | 10 +-
 test/js/samples/setup-method/expected.js      |  2 -
 test/js/samples/svg-title/expected-bundle.js  | 18 ++--
 test/js/samples/svg-title/expected.js         | 10 +-
 test/js/samples/title/expected-bundle.js      | 10 +-
 test/js/samples/title/expected.js             |  2 -
 .../expected-bundle.js                        | 97 ++++++++-----------
 .../use-elements-as-anchors/expected.js       | 91 ++++++++---------
 .../window-binding-scroll/expected-bundle.js  | 18 ++--
 .../samples/window-binding-scroll/expected.js | 10 +-
 .../samples/await-then-catch-if/main.html     | 16 +--
 87 files changed, 576 insertions(+), 975 deletions(-)

diff --git a/src/compile/dom/Block.ts b/src/compile/dom/Block.ts
index d2193bc1b1..c9010cf702 100644
--- a/src/compile/dom/Block.ts
+++ b/src/compile/dom/Block.ts
@@ -34,7 +34,6 @@ export default class Block {
 		intro: CodeBuilder;
 		update: CodeBuilder;
 		outro: CodeBuilder;
-		unmount: CodeBuilder;
 		detachRaw: CodeBuilder;
 		destroy: CodeBuilder;
 	};
@@ -73,7 +72,6 @@ export default class Block {
 			intro: new CodeBuilder(),
 			update: new CodeBuilder(),
 			outro: new CodeBuilder(),
-			unmount: new CodeBuilder(),
 			detachRaw: new CodeBuilder(),
 			destroy: new CodeBuilder(),
 		};
@@ -161,7 +159,8 @@ export default class Block {
 			this.builders.mount.addLine(`${this.autofocus}.focus();`);
 		}
 
-		// minor hack – we need to ensure that any {{{triples}}} are detached first
+		// minor hack – we need to ensure that any {@html x} blocks are detached first
+		// (TODO: is this still necessary? or is there a neater approach?)
 		this.builders.destroy.addBlockAtStart(this.builders.detachRaw.toString());
 
 		const properties = new CodeBuilder();
diff --git a/src/compile/nodes/Slot.ts b/src/compile/nodes/Slot.ts
index 8515f3728a..7e55b02055 100644
--- a/src/compile/nodes/Slot.ts
+++ b/src/compile/nodes/Slot.ts
@@ -55,13 +55,12 @@ export default class Slot extends Element {
 		if (needsAnchorAfter) block.addVariable(anchorAfter);
 
 		let mountBefore = block.builders.mount.toString();
-		let unmountBefore = block.builders.unmount.toString();
+		let destroyBefore = block.builders.destroy.toString();
 
 		block.builders.create.pushCondition(`!${content_name}`);
 		block.builders.hydrate.pushCondition(`!${content_name}`);
 		block.builders.mount.pushCondition(`!${content_name}`);
 		block.builders.update.pushCondition(`!${content_name}`);
-		block.builders.unmount.pushCondition(`!${content_name}`);
 		block.builders.destroy.pushCondition(`!${content_name}`);
 
 		this.children.forEach((child: Node) => {
@@ -72,7 +71,6 @@ export default class Slot extends Element {
 		block.builders.hydrate.popCondition();
 		block.builders.mount.popCondition();
 		block.builders.update.popCondition();
-		block.builders.unmount.popCondition();
 		block.builders.destroy.popCondition();
 
 		const mountLeadin = block.builders.mount.toString() !== mountBefore
@@ -101,30 +99,30 @@ export default class Slot extends Element {
 		// so that it can be reinserted later
 		// TODO so that this can work with public API, component._slotted should
 		// be all fragments, derived from options.slots. Not === options.slots
-		const unmountLeadin = block.builders.unmount.toString() !== unmountBefore
+		const unmountLeadin = block.builders.destroy.toString() !== destroyBefore
 			? `else`
 			: `if (${content_name})`;
 
 		if (anchorBefore === 'null' && anchorAfter === 'null') {
-			block.builders.unmount.addBlock(deindent`
+			block.builders.destroy.addBlock(deindent`
 				${unmountLeadin} {
 					@reinsertChildren(${parentNode}, ${content_name});
 				}
 			`);
 		} else if (anchorBefore === 'null') {
-			block.builders.unmount.addBlock(deindent`
+			block.builders.destroy.addBlock(deindent`
 				${unmountLeadin} {
 					@reinsertBefore(${anchorAfter}, ${content_name});
 				}
 			`);
 		} else if (anchorAfter === 'null') {
-			block.builders.unmount.addBlock(deindent`
+			block.builders.destroy.addBlock(deindent`
 				${unmountLeadin} {
 					@reinsertAfter(${anchorBefore}, ${content_name});
 				}
 			`);
 		} else {
-			block.builders.unmount.addBlock(deindent`
+			block.builders.destroy.addBlock(deindent`
 				${unmountLeadin} {
 					@reinsertBetween(${anchorBefore}, ${anchorAfter}, ${content_name});
 					@detachNode(${anchorBefore});
diff --git a/test/cli/samples/basic/expected/Main.js b/test/cli/samples/basic/expected/Main.js
index 6514bbbd31..dce010fb4c 100644
--- a/test/cli/samples/basic/expected/Main.js
+++ b/test/cli/samples/basic/expected/Main.js
@@ -1,4 +1,4 @@
-/* src/Main.html generated by Svelte v2.3.0 */
+/* src/Main.html generated by Svelte v2.4.4 */
 
 function create_main_fragment(component, ctx) {
 	var p;
@@ -15,11 +15,11 @@ function create_main_fragment(component, ctx) {
 
 		p: noop,
 
-		u() {
-			detachNode(p);
-		},
-
-		d: noop
+		d(detach) {
+			if (detach) {
+				detachNode(p);
+			}
+		}
 	};
 }
 
@@ -43,7 +43,6 @@ assign(Main.prototype, {
  	set: set,
  	_set: _set,
  	_mount: _mount,
- 	_unmount: _unmount,
  	_differs: _differs
  });
 
@@ -82,8 +81,7 @@ function destroy(detach) {
 	this.fire('destroy');
 	this.set = noop;
 
-	if (detach !== false) this._fragment.u();
-	this._fragment.d();
+	this._fragment.d(detach !== false);
 	this._fragment = null;
 	this._state = {};
 }
@@ -155,10 +153,6 @@ function _mount(target, anchor) {
 	this._fragment[this._fragment.i ? 'i' : 'm'](target, anchor || null);
 }
 
-function _unmount() {
-	if (this._fragment) this._fragment.u();
-}
-
 function _differs(a, b) {
 	return a != a ? b == b : a !== b || ((a && typeof a === 'object') || typeof a === 'function');
 }
diff --git a/test/cli/samples/custom-element/expected/Main.js b/test/cli/samples/custom-element/expected/Main.js
index e92ada81cd..d1b96c9899 100644
--- a/test/cli/samples/custom-element/expected/Main.js
+++ b/test/cli/samples/custom-element/expected/Main.js
@@ -1,4 +1,4 @@
-/* src/Main.html generated by Svelte v2.3.0 */
+/* src/Main.html generated by Svelte v2.4.4 */
 
 function create_main_fragment(component, ctx) {
 	var p;
@@ -16,11 +16,11 @@ function create_main_fragment(component, ctx) {
 
 		p: noop,
 
-		u() {
-			detachNode(p);
-		},
-
-		d: noop
+		d(detach) {
+			if (detach) {
+				detachNode(p);
+			}
+		}
 	};
 }
 
@@ -57,16 +57,11 @@ assign(Main.prototype, {
  	set: set,
  	_set: _set,
  	_mount: _mount,
- 	_unmount: _unmount,
  	_differs: _differs
  });
 assign(Main.prototype, {
 	_mount(target, anchor) {
 		target.insertBefore(this, anchor);
-	},
-
-	_unmount() {
-		this.parentNode.removeChild(this);
 	}
 });
 
@@ -107,8 +102,7 @@ function destroy(detach) {
 	this.fire('destroy');
 	this.set = noop;
 
-	if (detach !== false) this._fragment.u();
-	this._fragment.d();
+	this._fragment.d(detach !== false);
 	this._fragment = null;
 	this._state = {};
 }
@@ -180,10 +174,6 @@ function _mount(target, anchor) {
 	this._fragment[this._fragment.i ? 'i' : 'm'](target, anchor || null);
 }
 
-function _unmount() {
-	if (this._fragment) this._fragment.u();
-}
-
 function _differs(a, b) {
 	return a != a ? b == b : a !== b || ((a && typeof a === 'object') || typeof a === 'function');
 }
diff --git a/test/cli/samples/dev/expected/Main.js b/test/cli/samples/dev/expected/Main.js
index 401307fe2e..a2da6346b6 100644
--- a/test/cli/samples/dev/expected/Main.js
+++ b/test/cli/samples/dev/expected/Main.js
@@ -1,4 +1,4 @@
-/* src/Main.html generated by Svelte v2.3.0 */
+/* src/Main.html generated by Svelte v2.4.4 */
 
 function create_main_fragment(component, ctx) {
 	var p;
@@ -15,11 +15,11 @@ function create_main_fragment(component, ctx) {
 
 		p: noop,
 
-		u: function unmount() {
-			detachNode(p);
-		},
-
-		d: noop
+		d: function destroy(detach) {
+			if (detach) {
+				detachNode(p);
+			}
+		}
 	};
 }
 
@@ -46,7 +46,6 @@ assign(Main.prototype, {
  	set: setDev,
  	_set: _set,
  	_mount: _mount,
- 	_unmount: _unmount,
  	_differs: _differs
  });
 
@@ -158,10 +157,6 @@ function _mount(target, anchor) {
 	this._fragment[this._fragment.i ? 'i' : 'm'](target, anchor || null);
 }
 
-function _unmount() {
-	if (this._fragment) this._fragment.u();
-}
-
 function _differs(a, b) {
 	return a != a ? b == b : a !== b || ((a && typeof a === 'object') || typeof a === 'function');
 }
@@ -175,8 +170,7 @@ function destroy(detach) {
 	this.fire('destroy');
 	this.set = noop;
 
-	if (detach !== false) this._fragment.u();
-	this._fragment.d();
+	this._fragment.d(detach !== false);
 	this._fragment = null;
 	this._state = {};
 }
diff --git a/test/cli/samples/dir-sourcemap/expected/Main.js b/test/cli/samples/dir-sourcemap/expected/Main.js
index 7cdd41dd4a..b4a005c0ac 100644
--- a/test/cli/samples/dir-sourcemap/expected/Main.js
+++ b/test/cli/samples/dir-sourcemap/expected/Main.js
@@ -1,4 +1,4 @@
-/* src/Main.html generated by Svelte v2.3.0 */
+/* src/Main.html generated by Svelte v2.4.4 */
 import Widget from './Widget.html';
 
 
@@ -20,12 +20,8 @@ function create_main_fragment(component, ctx) {
 
 		p: noop,
 
-		u() {
-			widget._unmount();
-		},
-
-		d() {
-			widget.destroy(false);
+		d(detach) {
+			widget.destroy(detach);
 		}
 	};
 }
@@ -62,7 +58,6 @@ assign(Main.prototype, {
  	set: set,
  	_set: _set,
  	_mount: _mount,
- 	_unmount: _unmount,
  	_differs: _differs
  });
 
@@ -93,8 +88,7 @@ function destroy(detach) {
 	this.fire('destroy');
 	this.set = noop;
 
-	if (detach !== false) this._fragment.u();
-	this._fragment.d();
+	this._fragment.d(detach !== false);
 	this._fragment = null;
 	this._state = {};
 }
@@ -166,10 +160,6 @@ function _mount(target, anchor) {
 	this._fragment[this._fragment.i ? 'i' : 'm'](target, anchor || null);
 }
 
-function _unmount() {
-	if (this._fragment) this._fragment.u();
-}
-
 function _differs(a, b) {
 	return a != a ? b == b : a !== b || ((a && typeof a === 'object') || typeof a === 'function');
 }
diff --git a/test/cli/samples/dir-sourcemap/expected/Main.js.map b/test/cli/samples/dir-sourcemap/expected/Main.js.map
index cf890d4435..6e2eb7d0b0 100644
--- a/test/cli/samples/dir-sourcemap/expected/Main.js.map
+++ b/test/cli/samples/dir-sourcemap/expected/Main.js.map
@@ -1 +1 @@
-{"version":3,"file":"Main.js","sources":["../src/Main.html"],"sourcesContent":["<Widget/>\n\n<script>\n\timport Widget from './Widget.html';\n\n\texport default {\n\t\tcomponents: {\n\t\t\tWidget\n\t\t}\n\t};\n</script>"],"names":[],"mappings":";;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;"}
\ No newline at end of file
+{"version":3,"file":"Main.js","sources":["../src/Main.html"],"sourcesContent":["<Widget/>\n\n<script>\n\timport Widget from './Widget.html';\n\n\texport default {\n\t\tcomponents: {\n\t\t\tWidget\n\t\t}\n\t};\n</script>"],"names":[],"mappings":";;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;"}
\ No newline at end of file
diff --git a/test/cli/samples/dir-sourcemap/expected/Widget.js b/test/cli/samples/dir-sourcemap/expected/Widget.js
index ad16d7aef5..28223fdd1c 100644
--- a/test/cli/samples/dir-sourcemap/expected/Widget.js
+++ b/test/cli/samples/dir-sourcemap/expected/Widget.js
@@ -1,4 +1,4 @@
-/* src/Widget.html generated by Svelte v2.3.0 */
+/* src/Widget.html generated by Svelte v2.4.4 */
 
 function create_main_fragment(component, ctx) {
 	var p;
@@ -15,11 +15,11 @@ function create_main_fragment(component, ctx) {
 
 		p: noop,
 
-		u() {
-			detachNode(p);
-		},
-
-		d: noop
+		d(detach) {
+			if (detach) {
+				detachNode(p);
+			}
+		}
 	};
 }
 
@@ -43,7 +43,6 @@ assign(Widget.prototype, {
  	set: set,
  	_set: _set,
  	_mount: _mount,
- 	_unmount: _unmount,
  	_differs: _differs
  });
 
@@ -82,8 +81,7 @@ function destroy(detach) {
 	this.fire('destroy');
 	this.set = noop;
 
-	if (detach !== false) this._fragment.u();
-	this._fragment.d();
+	this._fragment.d(detach !== false);
 	this._fragment = null;
 	this._state = {};
 }
@@ -155,10 +153,6 @@ function _mount(target, anchor) {
 	this._fragment[this._fragment.i ? 'i' : 'm'](target, anchor || null);
 }
 
-function _unmount() {
-	if (this._fragment) this._fragment.u();
-}
-
 function _differs(a, b) {
 	return a != a ? b == b : a !== b || ((a && typeof a === 'object') || typeof a === 'function');
 }
diff --git a/test/cli/samples/dir-sourcemap/expected/Widget.js.map b/test/cli/samples/dir-sourcemap/expected/Widget.js.map
index d007680a81..8d57bc3c9a 100644
--- a/test/cli/samples/dir-sourcemap/expected/Widget.js.map
+++ b/test/cli/samples/dir-sourcemap/expected/Widget.js.map
@@ -1 +1 @@
-{"version":3,"file":"Widget.js","sources":["../src/Widget.html"],"sourcesContent":["<p>widget</p>"],"names":[],"mappings":";;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;"}
\ No newline at end of file
+{"version":3,"file":"Widget.js","sources":["../src/Widget.html"],"sourcesContent":["<p>widget</p>"],"names":[],"mappings":";;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;"}
\ No newline at end of file
diff --git a/test/cli/samples/dir-subdir/expected/Main.js b/test/cli/samples/dir-subdir/expected/Main.js
index 52c9caf092..1a595e80dd 100644
--- a/test/cli/samples/dir-subdir/expected/Main.js
+++ b/test/cli/samples/dir-subdir/expected/Main.js
@@ -1,4 +1,4 @@
-/* src/Main.html generated by Svelte v2.3.0 */
+/* src/Main.html generated by Svelte v2.4.4 */
 import Widget from './widget/Widget.html';
 
 
@@ -20,12 +20,8 @@ function create_main_fragment(component, ctx) {
 
 		p: noop,
 
-		u() {
-			widget._unmount();
-		},
-
-		d() {
-			widget.destroy(false);
+		d(detach) {
+			widget.destroy(detach);
 		}
 	};
 }
@@ -62,7 +58,6 @@ assign(Main.prototype, {
  	set: set,
  	_set: _set,
  	_mount: _mount,
- 	_unmount: _unmount,
  	_differs: _differs
  });
 
@@ -93,8 +88,7 @@ function destroy(detach) {
 	this.fire('destroy');
 	this.set = noop;
 
-	if (detach !== false) this._fragment.u();
-	this._fragment.d();
+	this._fragment.d(detach !== false);
 	this._fragment = null;
 	this._state = {};
 }
@@ -166,10 +160,6 @@ function _mount(target, anchor) {
 	this._fragment[this._fragment.i ? 'i' : 'm'](target, anchor || null);
 }
 
-function _unmount() {
-	if (this._fragment) this._fragment.u();
-}
-
 function _differs(a, b) {
 	return a != a ? b == b : a !== b || ((a && typeof a === 'object') || typeof a === 'function');
 }
diff --git a/test/cli/samples/dir-subdir/expected/widget/Widget.js b/test/cli/samples/dir-subdir/expected/widget/Widget.js
index 66543c808e..7ab7e73f96 100644
--- a/test/cli/samples/dir-subdir/expected/widget/Widget.js
+++ b/test/cli/samples/dir-subdir/expected/widget/Widget.js
@@ -1,4 +1,4 @@
-/* src/widget/Widget.html generated by Svelte v2.3.0 */
+/* src/widget/Widget.html generated by Svelte v2.4.4 */
 
 function create_main_fragment(component, ctx) {
 	var p;
@@ -15,11 +15,11 @@ function create_main_fragment(component, ctx) {
 
 		p: noop,
 
-		u() {
-			detachNode(p);
-		},
-
-		d: noop
+		d(detach) {
+			if (detach) {
+				detachNode(p);
+			}
+		}
 	};
 }
 
@@ -43,7 +43,6 @@ assign(Widget.prototype, {
  	set: set,
  	_set: _set,
  	_mount: _mount,
- 	_unmount: _unmount,
  	_differs: _differs
  });
 
@@ -82,8 +81,7 @@ function destroy(detach) {
 	this.fire('destroy');
 	this.set = noop;
 
-	if (detach !== false) this._fragment.u();
-	this._fragment.d();
+	this._fragment.d(detach !== false);
 	this._fragment = null;
 	this._state = {};
 }
@@ -155,10 +153,6 @@ function _mount(target, anchor) {
 	this._fragment[this._fragment.i ? 'i' : 'm'](target, anchor || null);
 }
 
-function _unmount() {
-	if (this._fragment) this._fragment.u();
-}
-
 function _differs(a, b) {
 	return a != a ? b == b : a !== b || ((a && typeof a === 'object') || typeof a === 'function');
 }
diff --git a/test/cli/samples/dir/expected/Main.js b/test/cli/samples/dir/expected/Main.js
index 77a56bf3bf..43ff753eca 100644
--- a/test/cli/samples/dir/expected/Main.js
+++ b/test/cli/samples/dir/expected/Main.js
@@ -1,4 +1,4 @@
-/* src/Main.html generated by Svelte v2.3.0 */
+/* src/Main.html generated by Svelte v2.4.4 */
 import Widget from './Widget.html';
 
 
@@ -20,12 +20,8 @@ function create_main_fragment(component, ctx) {
 
 		p: noop,
 
-		u() {
-			widget._unmount();
-		},
-
-		d() {
-			widget.destroy(false);
+		d(detach) {
+			widget.destroy(detach);
 		}
 	};
 }
@@ -62,7 +58,6 @@ assign(Main.prototype, {
  	set: set,
  	_set: _set,
  	_mount: _mount,
- 	_unmount: _unmount,
  	_differs: _differs
  });
 
@@ -93,8 +88,7 @@ function destroy(detach) {
 	this.fire('destroy');
 	this.set = noop;
 
-	if (detach !== false) this._fragment.u();
-	this._fragment.d();
+	this._fragment.d(detach !== false);
 	this._fragment = null;
 	this._state = {};
 }
@@ -166,10 +160,6 @@ function _mount(target, anchor) {
 	this._fragment[this._fragment.i ? 'i' : 'm'](target, anchor || null);
 }
 
-function _unmount() {
-	if (this._fragment) this._fragment.u();
-}
-
 function _differs(a, b) {
 	return a != a ? b == b : a !== b || ((a && typeof a === 'object') || typeof a === 'function');
 }
diff --git a/test/cli/samples/dir/expected/Widget.js b/test/cli/samples/dir/expected/Widget.js
index ecb3303e7d..9c62194627 100644
--- a/test/cli/samples/dir/expected/Widget.js
+++ b/test/cli/samples/dir/expected/Widget.js
@@ -1,4 +1,4 @@
-/* src/Widget.html generated by Svelte v2.3.0 */
+/* src/Widget.html generated by Svelte v2.4.4 */
 
 function create_main_fragment(component, ctx) {
 	var p;
@@ -15,11 +15,11 @@ function create_main_fragment(component, ctx) {
 
 		p: noop,
 
-		u() {
-			detachNode(p);
-		},
-
-		d: noop
+		d(detach) {
+			if (detach) {
+				detachNode(p);
+			}
+		}
 	};
 }
 
@@ -43,7 +43,6 @@ assign(Widget.prototype, {
  	set: set,
  	_set: _set,
  	_mount: _mount,
- 	_unmount: _unmount,
  	_differs: _differs
  });
 
@@ -82,8 +81,7 @@ function destroy(detach) {
 	this.fire('destroy');
 	this.set = noop;
 
-	if (detach !== false) this._fragment.u();
-	this._fragment.d();
+	this._fragment.d(detach !== false);
 	this._fragment = null;
 	this._state = {};
 }
@@ -155,10 +153,6 @@ function _mount(target, anchor) {
 	this._fragment[this._fragment.i ? 'i' : 'm'](target, anchor || null);
 }
 
-function _unmount() {
-	if (this._fragment) this._fragment.u();
-}
-
 function _differs(a, b) {
 	return a != a ? b == b : a !== b || ((a && typeof a === 'object') || typeof a === 'function');
 }
diff --git a/test/cli/samples/globals/expected/Main.js b/test/cli/samples/globals/expected/Main.js
index 2db0a261a2..968eb228fe 100644
--- a/test/cli/samples/globals/expected/Main.js
+++ b/test/cli/samples/globals/expected/Main.js
@@ -1,4 +1,4 @@
-/* src/Main.html generated by Svelte v2.3.0 */
+/* src/Main.html generated by Svelte v2.4.4 */
 var Main = (function(answer) { "use strict";
 	answer = (answer && answer.__esModule) ? answer["default"] : answer;
 
@@ -30,11 +30,11 @@ var Main = (function(answer) { "use strict";
 				}
 			},
 
-			u() {
-				detachNode(p);
-			},
-
-			d: noop
+			d(detach) {
+				if (detach) {
+					detachNode(p);
+				}
+			}
 		};
 	}
 
@@ -58,7 +58,6 @@ var Main = (function(answer) { "use strict";
 	 	set: set,
 	 	_set: _set,
 	 	_mount: _mount,
-	 	_unmount: _unmount,
 	 	_differs: _differs
 	 });
 
@@ -84,8 +83,6 @@ var Main = (function(answer) { "use strict";
 		node.parentNode.removeChild(node);
 	}
 
-	function noop() {}
-
 	function init(component, options) {
 		component._handlers = blankObject();
 		component._bind = options._bind;
@@ -105,8 +102,7 @@ var Main = (function(answer) { "use strict";
 		this.fire('destroy');
 		this.set = noop;
 
-		if (detach !== false) this._fragment.u();
-		this._fragment.d();
+		this._fragment.d(detach !== false);
 		this._fragment = null;
 		this._state = {};
 	}
@@ -178,14 +174,12 @@ var Main = (function(answer) { "use strict";
 		this._fragment[this._fragment.i ? 'i' : 'm'](target, anchor || null);
 	}
 
-	function _unmount() {
-		if (this._fragment) this._fragment.u();
-	}
-
 	function _differs(a, b) {
 		return a != a ? b == b : a !== b || ((a && typeof a === 'object') || typeof a === 'function');
 	}
 
+	function noop() {}
+
 	function blankObject() {
 		return Object.create(null);
 	}
diff --git a/test/cli/samples/sourcemap-inline/expected/Main.js b/test/cli/samples/sourcemap-inline/expected/Main.js
index fe639ac270..3da16e1a57 100644
--- a/test/cli/samples/sourcemap-inline/expected/Main.js
+++ b/test/cli/samples/sourcemap-inline/expected/Main.js
@@ -1,4 +1,4 @@
-/* src/Main.html generated by Svelte v2.3.0 */
+/* src/Main.html generated by Svelte v2.4.4 */
 
 function create_main_fragment(component, ctx) {
 	var p;
@@ -15,11 +15,11 @@ function create_main_fragment(component, ctx) {
 
 		p: noop,
 
-		u() {
-			detachNode(p);
-		},
-
-		d: noop
+		d(detach) {
+			if (detach) {
+				detachNode(p);
+			}
+		}
 	};
 }
 
@@ -43,7 +43,6 @@ assign(Main.prototype, {
  	set: set,
  	_set: _set,
  	_mount: _mount,
- 	_unmount: _unmount,
  	_differs: _differs
  });
 
@@ -82,8 +81,7 @@ function destroy(detach) {
 	this.fire('destroy');
 	this.set = noop;
 
-	if (detach !== false) this._fragment.u();
-	this._fragment.d();
+	this._fragment.d(detach !== false);
 	this._fragment = null;
 	this._state = {};
 }
@@ -155,10 +153,6 @@ function _mount(target, anchor) {
 	this._fragment[this._fragment.i ? 'i' : 'm'](target, anchor || null);
 }
 
-function _unmount() {
-	if (this._fragment) this._fragment.u();
-}
-
 function _differs(a, b) {
 	return a != a ? b == b : a !== b || ((a && typeof a === 'object') || typeof a === 'function');
 }
@@ -171,4 +165,4 @@ function callAll(fns) {
 	while (fns && fns.length) fns.shift()();
 }
 export default Main;
-//# sourceMappingURL=data:application/json;charset=utf-8;base64,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
+//# sourceMappingURL=data:application/json;charset=utf-8;base64,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
diff --git a/test/cli/samples/sourcemap/expected/Main.js b/test/cli/samples/sourcemap/expected/Main.js
index 4f303ce506..b44a4b2f27 100644
--- a/test/cli/samples/sourcemap/expected/Main.js
+++ b/test/cli/samples/sourcemap/expected/Main.js
@@ -1,4 +1,4 @@
-/* src/Main.html generated by Svelte v2.3.0 */
+/* src/Main.html generated by Svelte v2.4.4 */
 
 function create_main_fragment(component, ctx) {
 	var p;
@@ -15,11 +15,11 @@ function create_main_fragment(component, ctx) {
 
 		p: noop,
 
-		u() {
-			detachNode(p);
-		},
-
-		d: noop
+		d(detach) {
+			if (detach) {
+				detachNode(p);
+			}
+		}
 	};
 }
 
@@ -43,7 +43,6 @@ assign(Main.prototype, {
  	set: set,
  	_set: _set,
  	_mount: _mount,
- 	_unmount: _unmount,
  	_differs: _differs
  });
 
@@ -82,8 +81,7 @@ function destroy(detach) {
 	this.fire('destroy');
 	this.set = noop;
 
-	if (detach !== false) this._fragment.u();
-	this._fragment.d();
+	this._fragment.d(detach !== false);
 	this._fragment = null;
 	this._state = {};
 }
@@ -155,10 +153,6 @@ function _mount(target, anchor) {
 	this._fragment[this._fragment.i ? 'i' : 'm'](target, anchor || null);
 }
 
-function _unmount() {
-	if (this._fragment) this._fragment.u();
-}
-
 function _differs(a, b) {
 	return a != a ? b == b : a !== b || ((a && typeof a === 'object') || typeof a === 'function');
 }
diff --git a/test/cli/samples/sourcemap/expected/Main.js.map b/test/cli/samples/sourcemap/expected/Main.js.map
index 5133d81436..c8777bdd11 100644
--- a/test/cli/samples/sourcemap/expected/Main.js.map
+++ b/test/cli/samples/sourcemap/expected/Main.js.map
@@ -1 +1 @@
-{"version":3,"file":"Main.js","sources":["../src/Main.html"],"sourcesContent":["<p>Hello world!</p>\n\n<script>\n\texport default {\n\t\tonrender () {\n\t\t\tconsole.log( 'here' );\n\t\t}\n\t};\n</script>"],"names":[],"mappings":";;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;"}
\ No newline at end of file
+{"version":3,"file":"Main.js","sources":["../src/Main.html"],"sourcesContent":["<p>Hello world!</p>\n\n<script>\n\texport default {\n\t\tonrender () {\n\t\t\tconsole.log( 'here' );\n\t\t}\n\t};\n</script>"],"names":[],"mappings":";;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;"}
\ No newline at end of file
diff --git a/test/cli/samples/store/expected/Main.js b/test/cli/samples/store/expected/Main.js
index 3588e60789..320a159497 100644
--- a/test/cli/samples/store/expected/Main.js
+++ b/test/cli/samples/store/expected/Main.js
@@ -1,4 +1,4 @@
-/* src/Main.html generated by Svelte v2.3.0 */
+/* src/Main.html generated by Svelte v2.4.4 */
 
 function create_main_fragment(component, ctx) {
 	var h1, text, text_1;
@@ -22,11 +22,11 @@ function create_main_fragment(component, ctx) {
 			}
 		},
 
-		u() {
-			detachNode(h1);
-		},
-
-		d: noop
+		d(detach) {
+			if (detach) {
+				detachNode(h1);
+			}
+		}
 	};
 }
 
@@ -53,7 +53,6 @@ assign(Main.prototype, {
  	set: set,
  	_set: _set,
  	_mount: _mount,
- 	_unmount: _unmount,
  	_differs: _differs
  });
 
@@ -79,8 +78,6 @@ function detachNode(node) {
 	node.parentNode.removeChild(node);
 }
 
-function noop() {}
-
 function init(component, options) {
 	component._handlers = blankObject();
 	component._bind = options._bind;
@@ -104,8 +101,7 @@ function destroy(detach) {
 	this.fire('destroy');
 	this.set = noop;
 
-	if (detach !== false) this._fragment.u();
-	this._fragment.d();
+	this._fragment.d(detach !== false);
 	this._fragment = null;
 	this._state = {};
 }
@@ -177,14 +173,12 @@ function _mount(target, anchor) {
 	this._fragment[this._fragment.i ? 'i' : 'm'](target, anchor || null);
 }
 
-function _unmount() {
-	if (this._fragment) this._fragment.u();
-}
-
 function _differs(a, b) {
 	return a != a ? b == b : a !== b || ((a && typeof a === 'object') || typeof a === 'function');
 }
 
+function noop() {}
+
 function blankObject() {
 	return Object.create(null);
 }
diff --git a/test/js/samples/action/expected-bundle.js b/test/js/samples/action/expected-bundle.js
index 4814e2fede..49e0372582 100644
--- a/test/js/samples/action/expected-bundle.js
+++ b/test/js/samples/action/expected-bundle.js
@@ -26,8 +26,7 @@ function destroy(detach) {
 	this.fire('destroy');
 	this.set = noop;
 
-	if (detach !== false) this._fragment.u();
-	this._fragment.d();
+	this._fragment.d(detach !== false);
 	this._fragment = null;
 	this._state = {};
 }
@@ -116,10 +115,6 @@ function _mount(target, anchor) {
 	this._fragment[this._fragment.i ? 'i' : 'm'](target, anchor || null);
 }
 
-function _unmount() {
-	if (this._fragment) this._fragment.u();
-}
-
 var proto = {
 	destroy,
 	get,
@@ -129,7 +124,6 @@ var proto = {
 	_recompute: noop,
 	_set,
 	_mount,
-	_unmount,
 	_differs
 };
 
@@ -167,11 +161,11 @@ function create_main_fragment(component, ctx) {
 
 		p: noop,
 
-		u() {
-			detachNode(a);
-		},
+		d(detach) {
+			if (detach) {
+				detachNode(a);
+			}
 
-		d() {
 			if (typeof link_action.destroy === 'function') link_action.destroy.call(component);
 		}
 	};
diff --git a/test/js/samples/action/expected.js b/test/js/samples/action/expected.js
index 199bf4dffe..f92f3723fe 100644
--- a/test/js/samples/action/expected.js
+++ b/test/js/samples/action/expected.js
@@ -34,11 +34,11 @@ function create_main_fragment(component, ctx) {
 
 		p: noop,
 
-		u() {
-			detachNode(a);
-		},
+		d(detach) {
+			if (detach) {
+				detachNode(a);
+			}
 
-		d() {
 			if (typeof link_action.destroy === 'function') link_action.destroy.call(component);
 		}
 	};
diff --git a/test/js/samples/bind-width-height/expected-bundle.js b/test/js/samples/bind-width-height/expected-bundle.js
index 0787252e8d..371f3d2843 100644
--- a/test/js/samples/bind-width-height/expected-bundle.js
+++ b/test/js/samples/bind-width-height/expected-bundle.js
@@ -58,8 +58,7 @@ function destroy(detach) {
 	this.fire('destroy');
 	this.set = noop;
 
-	if (detach !== false) this._fragment.u();
-	this._fragment.d();
+	this._fragment.d(detach !== false);
 	this._fragment = null;
 	this._state = {};
 }
@@ -148,10 +147,6 @@ function _mount(target, anchor) {
 	this._fragment[this._fragment.i ? 'i' : 'm'](target, anchor || null);
 }
 
-function _unmount() {
-	if (this._fragment) this._fragment.u();
-}
-
 var proto = {
 	destroy,
 	get,
@@ -161,7 +156,6 @@ var proto = {
 	_recompute: noop,
 	_set,
 	_mount,
-	_unmount,
 	_differs
 };
 
@@ -188,12 +182,13 @@ function create_main_fragment(component, ctx) {
 
 		p: noop,
 
-		u() {
-			detachNode(div);
-			div_resize_listener.cancel();
-		},
+		d(detach) {
+			if (detach) {
+				detachNode(div);
+			}
 
-		d: noop
+			div_resize_listener.cancel();
+		}
 	};
 }
 
diff --git a/test/js/samples/bind-width-height/expected.js b/test/js/samples/bind-width-height/expected.js
index 19014886a2..8d9b432ef0 100644
--- a/test/js/samples/bind-width-height/expected.js
+++ b/test/js/samples/bind-width-height/expected.js
@@ -22,12 +22,13 @@ function create_main_fragment(component, ctx) {
 
 		p: noop,
 
-		u() {
-			detachNode(div);
-			div_resize_listener.cancel();
-		},
+		d(detach) {
+			if (detach) {
+				detachNode(div);
+			}
 
-		d: noop
+			div_resize_listener.cancel();
+		}
 	};
 }
 
diff --git a/test/js/samples/collapses-text-around-comments/expected-bundle.js b/test/js/samples/collapses-text-around-comments/expected-bundle.js
index 383cf6d7fc..302c1c3aaf 100644
--- a/test/js/samples/collapses-text-around-comments/expected-bundle.js
+++ b/test/js/samples/collapses-text-around-comments/expected-bundle.js
@@ -34,8 +34,7 @@ function destroy(detach) {
 	this.fire('destroy');
 	this.set = noop;
 
-	if (detach !== false) this._fragment.u();
-	this._fragment.d();
+	this._fragment.d(detach !== false);
 	this._fragment = null;
 	this._state = {};
 }
@@ -124,10 +123,6 @@ function _mount(target, anchor) {
 	this._fragment[this._fragment.i ? 'i' : 'm'](target, anchor || null);
 }
 
-function _unmount() {
-	if (this._fragment) this._fragment.u();
-}
-
 var proto = {
 	destroy,
 	get,
@@ -137,7 +132,6 @@ var proto = {
 	_recompute: noop,
 	_set,
 	_mount,
-	_unmount,
 	_differs
 };
 
@@ -174,11 +168,11 @@ function create_main_fragment(component, ctx) {
 			}
 		},
 
-		u() {
-			detachNode(p);
-		},
-
-		d: noop
+		d(detach) {
+			if (detach) {
+				detachNode(p);
+			}
+		}
 	};
 }
 
diff --git a/test/js/samples/collapses-text-around-comments/expected.js b/test/js/samples/collapses-text-around-comments/expected.js
index bbc1e187f6..75d00262c0 100644
--- a/test/js/samples/collapses-text-around-comments/expected.js
+++ b/test/js/samples/collapses-text-around-comments/expected.js
@@ -1,5 +1,5 @@
 /* generated by Svelte vX.Y.Z */
-import { appendNode, assign, createElement, createText, detachNode, init, insertNode, noop, proto } from "svelte/shared.js";
+import { appendNode, assign, createElement, createText, detachNode, init, insertNode, proto } from "svelte/shared.js";
 
 function data() {
 	return { foo: 42 }
@@ -33,11 +33,11 @@ function create_main_fragment(component, ctx) {
 			}
 		},
 
-		u() {
-			detachNode(p);
-		},
-
-		d: noop
+		d(detach) {
+			if (detach) {
+				detachNode(p);
+			}
+		}
 	};
 }
 
diff --git a/test/js/samples/component-static-array/expected-bundle.js b/test/js/samples/component-static-array/expected-bundle.js
index a210f5ce42..871a50c7cc 100644
--- a/test/js/samples/component-static-array/expected-bundle.js
+++ b/test/js/samples/component-static-array/expected-bundle.js
@@ -14,8 +14,7 @@ function destroy(detach) {
 	this.fire('destroy');
 	this.set = noop;
 
-	if (detach !== false) this._fragment.u();
-	this._fragment.d();
+	this._fragment.d(detach !== false);
 	this._fragment = null;
 	this._state = {};
 }
@@ -104,10 +103,6 @@ function _mount(target, anchor) {
 	this._fragment[this._fragment.i ? 'i' : 'm'](target, anchor || null);
 }
 
-function _unmount() {
-	if (this._fragment) this._fragment.u();
-}
-
 var proto = {
 	destroy,
 	get,
@@ -117,7 +112,6 @@ var proto = {
 	_recompute: noop,
 	_set,
 	_mount,
-	_unmount,
 	_differs
 };
 
@@ -144,12 +138,8 @@ function create_main_fragment(component, ctx) {
 
 		p: noop,
 
-		u() {
-			nested._unmount();
-		},
-
-		d() {
-			nested.destroy(false);
+		d(detach) {
+			nested.destroy(detach);
 		}
 	};
 }
diff --git a/test/js/samples/component-static-array/expected.js b/test/js/samples/component-static-array/expected.js
index cba2d4d947..f07b2d8ed3 100644
--- a/test/js/samples/component-static-array/expected.js
+++ b/test/js/samples/component-static-array/expected.js
@@ -22,12 +22,8 @@ function create_main_fragment(component, ctx) {
 
 		p: noop,
 
-		u() {
-			nested._unmount();
-		},
-
-		d() {
-			nested.destroy(false);
+		d(detach) {
+			nested.destroy(detach);
 		}
 	};
 }
diff --git a/test/js/samples/component-static-immutable/expected-bundle.js b/test/js/samples/component-static-immutable/expected-bundle.js
index 01c033904b..93a558f4ac 100644
--- a/test/js/samples/component-static-immutable/expected-bundle.js
+++ b/test/js/samples/component-static-immutable/expected-bundle.js
@@ -14,8 +14,7 @@ function destroy(detach) {
 	this.fire('destroy');
 	this.set = noop;
 
-	if (detach !== false) this._fragment.u();
-	this._fragment.d();
+	this._fragment.d(detach !== false);
 	this._fragment = null;
 	this._state = {};
 }
@@ -108,10 +107,6 @@ function _mount(target, anchor) {
 	this._fragment[this._fragment.i ? 'i' : 'm'](target, anchor || null);
 }
 
-function _unmount() {
-	if (this._fragment) this._fragment.u();
-}
-
 var proto = {
 	destroy,
 	get,
@@ -121,7 +116,6 @@ var proto = {
 	_recompute: noop,
 	_set,
 	_mount,
-	_unmount,
 	_differs
 };
 
@@ -148,12 +142,8 @@ function create_main_fragment(component, ctx) {
 
 		p: noop,
 
-		u() {
-			nested._unmount();
-		},
-
-		d() {
-			nested.destroy(false);
+		d(detach) {
+			nested.destroy(detach);
 		}
 	};
 }
diff --git a/test/js/samples/component-static-immutable/expected.js b/test/js/samples/component-static-immutable/expected.js
index c7e5228e63..c18720c54a 100644
--- a/test/js/samples/component-static-immutable/expected.js
+++ b/test/js/samples/component-static-immutable/expected.js
@@ -22,12 +22,8 @@ function create_main_fragment(component, ctx) {
 
 		p: noop,
 
-		u() {
-			nested._unmount();
-		},
-
-		d() {
-			nested.destroy(false);
+		d(detach) {
+			nested.destroy(detach);
 		}
 	};
 }
diff --git a/test/js/samples/component-static-immutable2/expected-bundle.js b/test/js/samples/component-static-immutable2/expected-bundle.js
index 01c033904b..93a558f4ac 100644
--- a/test/js/samples/component-static-immutable2/expected-bundle.js
+++ b/test/js/samples/component-static-immutable2/expected-bundle.js
@@ -14,8 +14,7 @@ function destroy(detach) {
 	this.fire('destroy');
 	this.set = noop;
 
-	if (detach !== false) this._fragment.u();
-	this._fragment.d();
+	this._fragment.d(detach !== false);
 	this._fragment = null;
 	this._state = {};
 }
@@ -108,10 +107,6 @@ function _mount(target, anchor) {
 	this._fragment[this._fragment.i ? 'i' : 'm'](target, anchor || null);
 }
 
-function _unmount() {
-	if (this._fragment) this._fragment.u();
-}
-
 var proto = {
 	destroy,
 	get,
@@ -121,7 +116,6 @@ var proto = {
 	_recompute: noop,
 	_set,
 	_mount,
-	_unmount,
 	_differs
 };
 
@@ -148,12 +142,8 @@ function create_main_fragment(component, ctx) {
 
 		p: noop,
 
-		u() {
-			nested._unmount();
-		},
-
-		d() {
-			nested.destroy(false);
+		d(detach) {
+			nested.destroy(detach);
 		}
 	};
 }
diff --git a/test/js/samples/component-static-immutable2/expected.js b/test/js/samples/component-static-immutable2/expected.js
index c7e5228e63..c18720c54a 100644
--- a/test/js/samples/component-static-immutable2/expected.js
+++ b/test/js/samples/component-static-immutable2/expected.js
@@ -22,12 +22,8 @@ function create_main_fragment(component, ctx) {
 
 		p: noop,
 
-		u() {
-			nested._unmount();
-		},
-
-		d() {
-			nested.destroy(false);
+		d(detach) {
+			nested.destroy(detach);
 		}
 	};
 }
diff --git a/test/js/samples/component-static/expected-bundle.js b/test/js/samples/component-static/expected-bundle.js
index 5af6703c7d..bf7121708a 100644
--- a/test/js/samples/component-static/expected-bundle.js
+++ b/test/js/samples/component-static/expected-bundle.js
@@ -14,8 +14,7 @@ function destroy(detach) {
 	this.fire('destroy');
 	this.set = noop;
 
-	if (detach !== false) this._fragment.u();
-	this._fragment.d();
+	this._fragment.d(detach !== false);
 	this._fragment = null;
 	this._state = {};
 }
@@ -104,10 +103,6 @@ function _mount(target, anchor) {
 	this._fragment[this._fragment.i ? 'i' : 'm'](target, anchor || null);
 }
 
-function _unmount() {
-	if (this._fragment) this._fragment.u();
-}
-
 var proto = {
 	destroy,
 	get,
@@ -117,7 +112,6 @@ var proto = {
 	_recompute: noop,
 	_set,
 	_mount,
-	_unmount,
 	_differs
 };
 
@@ -144,12 +138,8 @@ function create_main_fragment(component, ctx) {
 
 		p: noop,
 
-		u() {
-			nested._unmount();
-		},
-
-		d() {
-			nested.destroy(false);
+		d(detach) {
+			nested.destroy(detach);
 		}
 	};
 }
diff --git a/test/js/samples/component-static/expected.js b/test/js/samples/component-static/expected.js
index fd7e83b2f5..2062324182 100644
--- a/test/js/samples/component-static/expected.js
+++ b/test/js/samples/component-static/expected.js
@@ -22,12 +22,8 @@ function create_main_fragment(component, ctx) {
 
 		p: noop,
 
-		u() {
-			nested._unmount();
-		},
-
-		d() {
-			nested.destroy(false);
+		d(detach) {
+			nested.destroy(detach);
 		}
 	};
 }
diff --git a/test/js/samples/computed-collapsed-if/expected-bundle.js b/test/js/samples/computed-collapsed-if/expected-bundle.js
index 0ea5200f7d..1a44c576c5 100644
--- a/test/js/samples/computed-collapsed-if/expected-bundle.js
+++ b/test/js/samples/computed-collapsed-if/expected-bundle.js
@@ -14,8 +14,7 @@ function destroy(detach) {
 	this.fire('destroy');
 	this.set = noop;
 
-	if (detach !== false) this._fragment.u();
-	this._fragment.d();
+	this._fragment.d(detach !== false);
 	this._fragment = null;
 	this._state = {};
 }
@@ -104,10 +103,6 @@ function _mount(target, anchor) {
 	this._fragment[this._fragment.i ? 'i' : 'm'](target, anchor || null);
 }
 
-function _unmount() {
-	if (this._fragment) this._fragment.u();
-}
-
 var proto = {
 	destroy,
 	get,
@@ -117,7 +112,6 @@ var proto = {
 	_recompute: noop,
 	_set,
 	_mount,
-	_unmount,
 	_differs
 };
 
@@ -140,8 +134,6 @@ function create_main_fragment(component, ctx) {
 
 		p: noop,
 
-		u: noop,
-
 		d: noop
 	};
 }
diff --git a/test/js/samples/computed-collapsed-if/expected.js b/test/js/samples/computed-collapsed-if/expected.js
index 5c248bf515..8ca8d597ee 100644
--- a/test/js/samples/computed-collapsed-if/expected.js
+++ b/test/js/samples/computed-collapsed-if/expected.js
@@ -18,8 +18,6 @@ function create_main_fragment(component, ctx) {
 
 		p: noop,
 
-		u: noop,
-
 		d: noop
 	};
 }
diff --git a/test/js/samples/css-media-query/expected-bundle.js b/test/js/samples/css-media-query/expected-bundle.js
index a2a6c24fb0..446ff23202 100644
--- a/test/js/samples/css-media-query/expected-bundle.js
+++ b/test/js/samples/css-media-query/expected-bundle.js
@@ -30,8 +30,7 @@ function destroy(detach) {
 	this.fire('destroy');
 	this.set = noop;
 
-	if (detach !== false) this._fragment.u();
-	this._fragment.d();
+	this._fragment.d(detach !== false);
 	this._fragment = null;
 	this._state = {};
 }
@@ -120,10 +119,6 @@ function _mount(target, anchor) {
 	this._fragment[this._fragment.i ? 'i' : 'm'](target, anchor || null);
 }
 
-function _unmount() {
-	if (this._fragment) this._fragment.u();
-}
-
 var proto = {
 	destroy,
 	get,
@@ -133,7 +128,6 @@ var proto = {
 	_recompute: noop,
 	_set,
 	_mount,
-	_unmount,
 	_differs
 };
 
@@ -161,11 +155,11 @@ function create_main_fragment(component, ctx) {
 
 		p: noop,
 
-		u() {
-			detachNode(div);
-		},
-
-		d: noop
+		d(detach) {
+			if (detach) {
+				detachNode(div);
+			}
+		}
 	};
 }
 
diff --git a/test/js/samples/css-media-query/expected.js b/test/js/samples/css-media-query/expected.js
index eb78637655..b307708cb3 100644
--- a/test/js/samples/css-media-query/expected.js
+++ b/test/js/samples/css-media-query/expected.js
@@ -23,11 +23,11 @@ function create_main_fragment(component, ctx) {
 
 		p: noop,
 
-		u() {
-			detachNode(div);
-		},
-
-		d: noop
+		d(detach) {
+			if (detach) {
+				detachNode(div);
+			}
+		}
 	};
 }
 
diff --git a/test/js/samples/css-shadow-dom-keyframes/expected-bundle.js b/test/js/samples/css-shadow-dom-keyframes/expected-bundle.js
index e826a95e92..86bef96e53 100644
--- a/test/js/samples/css-shadow-dom-keyframes/expected-bundle.js
+++ b/test/js/samples/css-shadow-dom-keyframes/expected-bundle.js
@@ -26,8 +26,7 @@ function destroy(detach) {
 	this.fire('destroy');
 	this.set = noop;
 
-	if (detach !== false) this._fragment.u();
-	this._fragment.d();
+	this._fragment.d(detach !== false);
 	this._fragment = null;
 	this._state = {};
 }
@@ -116,10 +115,6 @@ function _mount(target, anchor) {
 	this._fragment[this._fragment.i ? 'i' : 'm'](target, anchor || null);
 }
 
-function _unmount() {
-	if (this._fragment) this._fragment.u();
-}
-
 var proto = {
 	destroy,
 	get,
@@ -129,7 +124,6 @@ var proto = {
 	_recompute: noop,
 	_set,
 	_mount,
-	_unmount,
 	_differs
 };
 
@@ -151,11 +145,11 @@ function create_main_fragment(component, ctx) {
 
 		p: noop,
 
-		u() {
-			detachNode(div);
-		},
-
-		d: noop
+		d(detach) {
+			if (detach) {
+				detachNode(div);
+			}
+		}
 	};
 }
 
@@ -189,10 +183,6 @@ assign(SvelteComponent.prototype, proto);
 assign(SvelteComponent.prototype, {
 	_mount(target, anchor) {
 		target.insertBefore(this, anchor);
-	},
-
-	_unmount() {
-		this.parentNode.removeChild(this);
 	}
 });
 
diff --git a/test/js/samples/css-shadow-dom-keyframes/expected.js b/test/js/samples/css-shadow-dom-keyframes/expected.js
index a5df6fa8f8..e86d8a3cb3 100644
--- a/test/js/samples/css-shadow-dom-keyframes/expected.js
+++ b/test/js/samples/css-shadow-dom-keyframes/expected.js
@@ -17,11 +17,11 @@ function create_main_fragment(component, ctx) {
 
 		p: noop,
 
-		u() {
-			detachNode(div);
-		},
-
-		d: noop
+		d(detach) {
+			if (detach) {
+				detachNode(div);
+			}
+		}
 	};
 }
 
@@ -55,10 +55,6 @@ assign(SvelteComponent.prototype, proto);
 assign(SvelteComponent.prototype, {
 	_mount(target, anchor) {
 		target.insertBefore(this, anchor);
-	},
-
-	_unmount() {
-		this.parentNode.removeChild(this);
 	}
 });
 
diff --git a/test/js/samples/deconflict-builtins/expected-bundle.js b/test/js/samples/deconflict-builtins/expected-bundle.js
index 060e8d71c9..34f5c45b4a 100644
--- a/test/js/samples/deconflict-builtins/expected-bundle.js
+++ b/test/js/samples/deconflict-builtins/expected-bundle.js
@@ -17,9 +17,9 @@ function detachNode(node) {
 	node.parentNode.removeChild(node);
 }
 
-function destroyEach(iterations) {
+function destroyEach(iterations, detach) {
 	for (var i = 0; i < iterations.length; i += 1) {
-		if (iterations[i]) iterations[i].d();
+		if (iterations[i]) iterations[i].d(detach);
 	}
 }
 
@@ -44,8 +44,7 @@ function destroy(detach) {
 	this.fire('destroy');
 	this.set = noop;
 
-	if (detach !== false) this._fragment.u();
-	this._fragment.d();
+	this._fragment.d(detach !== false);
 	this._fragment = null;
 	this._state = {};
 }
@@ -134,10 +133,6 @@ function _mount(target, anchor) {
 	this._fragment[this._fragment.i ? 'i' : 'm'](target, anchor || null);
 }
 
-function _unmount() {
-	if (this._fragment) this._fragment.u();
-}
-
 var proto = {
 	destroy,
 	get,
@@ -147,7 +142,6 @@ var proto = {
 	_recompute: noop,
 	_set,
 	_mount,
-	_unmount,
 	_differs
 };
 
@@ -198,23 +192,18 @@ function create_main_fragment(component, ctx) {
 				}
 
 				for (; i < each_blocks.length; i += 1) {
-					each_blocks[i].u();
-					each_blocks[i].d();
+					each_blocks[i].d(1);
 				}
 				each_blocks.length = each_value.length;
 			}
 		},
 
-		u() {
-			for (var i = 0; i < each_blocks.length; i += 1) {
-				each_blocks[i].u();
-			}
-
-			detachNode(each_anchor);
-		},
+		d(detach) {
+			destroyEach(each_blocks, detach);
 
-		d() {
-			destroyEach(each_blocks);
+			if (detach) {
+				detachNode(each_anchor);
+			}
 		}
 	};
 }
@@ -240,11 +229,11 @@ function create_each_block(component, ctx) {
 			}
 		},
 
-		u() {
-			detachNode(span);
-		},
-
-		d: noop
+		d(detach) {
+			if (detach) {
+				detachNode(span);
+			}
+		}
 	};
 }
 
diff --git a/test/js/samples/deconflict-builtins/expected.js b/test/js/samples/deconflict-builtins/expected.js
index dd48b7708e..9888cef868 100644
--- a/test/js/samples/deconflict-builtins/expected.js
+++ b/test/js/samples/deconflict-builtins/expected.js
@@ -1,5 +1,5 @@
 /* generated by Svelte vX.Y.Z */
-import { appendNode, assign, createComment, createElement, createText, destroyEach, detachNode, init, insertNode, noop, proto } from "svelte/shared.js";
+import { appendNode, assign, createComment, createElement, createText, destroyEach, detachNode, init, insertNode, proto } from "svelte/shared.js";
 
 function create_main_fragment(component, ctx) {
 	var each_anchor;
@@ -46,23 +46,18 @@ function create_main_fragment(component, ctx) {
 				}
 
 				for (; i < each_blocks.length; i += 1) {
-					each_blocks[i].u();
-					each_blocks[i].d();
+					each_blocks[i].d(1);
 				}
 				each_blocks.length = each_value.length;
 			}
 		},
 
-		u() {
-			for (var i = 0; i < each_blocks.length; i += 1) {
-				each_blocks[i].u();
-			}
+		d(detach) {
+			destroyEach(each_blocks, detach);
 
-			detachNode(each_anchor);
-		},
-
-		d() {
-			destroyEach(each_blocks);
+			if (detach) {
+				detachNode(each_anchor);
+			}
 		}
 	};
 }
@@ -88,11 +83,11 @@ function create_each_block(component, ctx) {
 			}
 		},
 
-		u() {
-			detachNode(span);
-		},
-
-		d: noop
+		d(detach) {
+			if (detach) {
+				detachNode(span);
+			}
+		}
 	};
 }
 
diff --git a/test/js/samples/deconflict-globals/expected-bundle.js b/test/js/samples/deconflict-globals/expected-bundle.js
index 304b7cd956..06e30f87bc 100644
--- a/test/js/samples/deconflict-globals/expected-bundle.js
+++ b/test/js/samples/deconflict-globals/expected-bundle.js
@@ -19,8 +19,7 @@ function destroy(detach) {
 	this.fire('destroy');
 	this.set = noop;
 
-	if (detach !== false) this._fragment.u();
-	this._fragment.d();
+	this._fragment.d(detach !== false);
 	this._fragment = null;
 	this._state = {};
 }
@@ -109,10 +108,6 @@ function _mount(target, anchor) {
 	this._fragment[this._fragment.i ? 'i' : 'm'](target, anchor || null);
 }
 
-function _unmount() {
-	if (this._fragment) this._fragment.u();
-}
-
 var proto = {
 	destroy,
 	get,
@@ -122,7 +117,6 @@ var proto = {
 	_recompute: noop,
 	_set,
 	_mount,
-	_unmount,
 	_differs
 };
 
@@ -146,8 +140,6 @@ function create_main_fragment(component, ctx) {
 
 		p: noop,
 
-		u: noop,
-
 		d: noop
 	};
 }
diff --git a/test/js/samples/deconflict-globals/expected.js b/test/js/samples/deconflict-globals/expected.js
index a12da57b8a..afac48dfbd 100644
--- a/test/js/samples/deconflict-globals/expected.js
+++ b/test/js/samples/deconflict-globals/expected.js
@@ -20,8 +20,6 @@ function create_main_fragment(component, ctx) {
 
 		p: noop,
 
-		u: noop,
-
 		d: noop
 	};
 }
diff --git a/test/js/samples/dev-warning-missing-data-computed/expected-bundle.js b/test/js/samples/dev-warning-missing-data-computed/expected-bundle.js
index bea4d272db..bb93b05841 100644
--- a/test/js/samples/dev-warning-missing-data-computed/expected-bundle.js
+++ b/test/js/samples/dev-warning-missing-data-computed/expected-bundle.js
@@ -34,8 +34,7 @@ function destroy(detach) {
 	this.fire('destroy');
 	this.set = noop;
 
-	if (detach !== false) this._fragment.u();
-	this._fragment.d();
+	this._fragment.d(detach !== false);
 	this._fragment = null;
 	this._state = {};
 }
@@ -142,10 +141,6 @@ function _mount(target, anchor) {
 	this._fragment[this._fragment.i ? 'i' : 'm'](target, anchor || null);
 }
 
-function _unmount() {
-	if (this._fragment) this._fragment.u();
-}
-
 var protoDev = {
 	destroy: destroyDev,
 	get,
@@ -155,7 +150,6 @@ var protoDev = {
 	_recompute: noop,
 	_set,
 	_mount,
-	_unmount,
 	_differs
 };
 
@@ -193,11 +187,11 @@ function create_main_fragment(component, ctx) {
 			}
 		},
 
-		u: function unmount() {
-			detachNode(p);
-		},
-
-		d: noop
+		d: function destroy$$1(detach) {
+			if (detach) {
+				detachNode(p);
+			}
+		}
 	};
 }
 
diff --git a/test/js/samples/dev-warning-missing-data-computed/expected.js b/test/js/samples/dev-warning-missing-data-computed/expected.js
index 93be0ba0c1..5efb1f0a5e 100644
--- a/test/js/samples/dev-warning-missing-data-computed/expected.js
+++ b/test/js/samples/dev-warning-missing-data-computed/expected.js
@@ -1,5 +1,5 @@
 /* generated by Svelte vX.Y.Z */
-import { appendNode, assign, createElement, createText, detachNode, init, insertNode, noop, protoDev } from "svelte/shared.js";
+import { appendNode, assign, createElement, createText, detachNode, init, insertNode, protoDev } from "svelte/shared.js";
 
 function bar({ foo }) {
 	return foo * 2;
@@ -33,11 +33,11 @@ function create_main_fragment(component, ctx) {
 			}
 		},
 
-		u: function unmount() {
-			detachNode(p);
-		},
-
-		d: noop
+		d: function destroy(detach) {
+			if (detach) {
+				detachNode(p);
+			}
+		}
 	};
 }
 
diff --git a/test/js/samples/do-use-dataset/expected-bundle.js b/test/js/samples/do-use-dataset/expected-bundle.js
index 1c984cec89..e30355de25 100644
--- a/test/js/samples/do-use-dataset/expected-bundle.js
+++ b/test/js/samples/do-use-dataset/expected-bundle.js
@@ -30,8 +30,7 @@ function destroy(detach) {
 	this.fire('destroy');
 	this.set = noop;
 
-	if (detach !== false) this._fragment.u();
-	this._fragment.d();
+	this._fragment.d(detach !== false);
 	this._fragment = null;
 	this._state = {};
 }
@@ -120,10 +119,6 @@ function _mount(target, anchor) {
 	this._fragment[this._fragment.i ? 'i' : 'm'](target, anchor || null);
 }
 
-function _unmount() {
-	if (this._fragment) this._fragment.u();
-}
-
 var proto = {
 	destroy,
 	get,
@@ -133,7 +128,6 @@ var proto = {
 	_recompute: noop,
 	_set,
 	_mount,
-	_unmount,
 	_differs
 };
 
@@ -163,13 +157,13 @@ function create_main_fragment(component, ctx) {
 			}
 		},
 
-		u() {
-			detachNode(div);
-			detachNode(text);
-			detachNode(div_1);
-		},
-
-		d: noop
+		d(detach) {
+			if (detach) {
+				detachNode(div);
+				detachNode(text);
+				detachNode(div_1);
+			}
+		}
 	};
 }
 
diff --git a/test/js/samples/do-use-dataset/expected.js b/test/js/samples/do-use-dataset/expected.js
index 1ccda44fc7..a57edb8483 100644
--- a/test/js/samples/do-use-dataset/expected.js
+++ b/test/js/samples/do-use-dataset/expected.js
@@ -1,5 +1,5 @@
 /* generated by Svelte vX.Y.Z */
-import { assign, createElement, createText, detachNode, init, insertNode, noop, proto } from "svelte/shared.js";
+import { assign, createElement, createText, detachNode, init, insertNode, proto } from "svelte/shared.js";
 
 function create_main_fragment(component, ctx) {
 	var div, text, div_1;
@@ -25,13 +25,13 @@ function create_main_fragment(component, ctx) {
 			}
 		},
 
-		u() {
-			detachNode(div);
-			detachNode(text);
-			detachNode(div_1);
-		},
-
-		d: noop
+		d(detach) {
+			if (detach) {
+				detachNode(div);
+				detachNode(text);
+				detachNode(div_1);
+			}
+		}
 	};
 }
 
diff --git a/test/js/samples/dont-use-dataset-in-legacy/expected-bundle.js b/test/js/samples/dont-use-dataset-in-legacy/expected-bundle.js
index 70f961e65f..3cbc5ca530 100644
--- a/test/js/samples/dont-use-dataset-in-legacy/expected-bundle.js
+++ b/test/js/samples/dont-use-dataset-in-legacy/expected-bundle.js
@@ -34,8 +34,7 @@ function destroy(detach) {
 	this.fire('destroy');
 	this.set = noop;
 
-	if (detach !== false) this._fragment.u();
-	this._fragment.d();
+	this._fragment.d(detach !== false);
 	this._fragment = null;
 	this._state = {};
 }
@@ -124,10 +123,6 @@ function _mount(target, anchor) {
 	this._fragment[this._fragment.i ? 'i' : 'm'](target, anchor || null);
 }
 
-function _unmount() {
-	if (this._fragment) this._fragment.u();
-}
-
 var proto = {
 	destroy,
 	get,
@@ -137,7 +132,6 @@ var proto = {
 	_recompute: noop,
 	_set,
 	_mount,
-	_unmount,
 	_differs
 };
 
@@ -167,13 +161,13 @@ function create_main_fragment(component, ctx) {
 			}
 		},
 
-		u() {
-			detachNode(div);
-			detachNode(text);
-			detachNode(div_1);
-		},
-
-		d: noop
+		d(detach) {
+			if (detach) {
+				detachNode(div);
+				detachNode(text);
+				detachNode(div_1);
+			}
+		}
 	};
 }
 
diff --git a/test/js/samples/dont-use-dataset-in-legacy/expected.js b/test/js/samples/dont-use-dataset-in-legacy/expected.js
index 812d204455..1475687e2d 100644
--- a/test/js/samples/dont-use-dataset-in-legacy/expected.js
+++ b/test/js/samples/dont-use-dataset-in-legacy/expected.js
@@ -1,5 +1,5 @@
 /* generated by Svelte vX.Y.Z */
-import { assign, createElement, createText, detachNode, init, insertNode, noop, proto, setAttribute } from "svelte/shared.js";
+import { assign, createElement, createText, detachNode, init, insertNode, proto, setAttribute } from "svelte/shared.js";
 
 function create_main_fragment(component, ctx) {
 	var div, text, div_1;
@@ -25,13 +25,13 @@ function create_main_fragment(component, ctx) {
 			}
 		},
 
-		u() {
-			detachNode(div);
-			detachNode(text);
-			detachNode(div_1);
-		},
-
-		d: noop
+		d(detach) {
+			if (detach) {
+				detachNode(div);
+				detachNode(text);
+				detachNode(div_1);
+			}
+		}
 	};
 }
 
diff --git a/test/js/samples/dont-use-dataset-in-svg/expected-bundle.js b/test/js/samples/dont-use-dataset-in-svg/expected-bundle.js
index c7e99cee1f..80e1f60366 100644
--- a/test/js/samples/dont-use-dataset-in-svg/expected-bundle.js
+++ b/test/js/samples/dont-use-dataset-in-svg/expected-bundle.js
@@ -34,8 +34,7 @@ function destroy(detach) {
 	this.fire('destroy');
 	this.set = noop;
 
-	if (detach !== false) this._fragment.u();
-	this._fragment.d();
+	this._fragment.d(detach !== false);
 	this._fragment = null;
 	this._state = {};
 }
@@ -124,10 +123,6 @@ function _mount(target, anchor) {
 	this._fragment[this._fragment.i ? 'i' : 'm'](target, anchor || null);
 }
 
-function _unmount() {
-	if (this._fragment) this._fragment.u();
-}
-
 var proto = {
 	destroy,
 	get,
@@ -137,7 +132,6 @@ var proto = {
 	_recompute: noop,
 	_set,
 	_mount,
-	_unmount,
 	_differs
 };
 
@@ -167,11 +161,11 @@ function create_main_fragment(component, ctx) {
 			}
 		},
 
-		u() {
-			detachNode(svg);
-		},
-
-		d: noop
+		d(detach) {
+			if (detach) {
+				detachNode(svg);
+			}
+		}
 	};
 }
 
diff --git a/test/js/samples/dont-use-dataset-in-svg/expected.js b/test/js/samples/dont-use-dataset-in-svg/expected.js
index 863062dc91..42bc11876e 100644
--- a/test/js/samples/dont-use-dataset-in-svg/expected.js
+++ b/test/js/samples/dont-use-dataset-in-svg/expected.js
@@ -1,5 +1,5 @@
 /* generated by Svelte vX.Y.Z */
-import { appendNode, assign, createSvgElement, detachNode, init, insertNode, noop, proto, setAttribute } from "svelte/shared.js";
+import { appendNode, assign, createSvgElement, detachNode, init, insertNode, proto, setAttribute } from "svelte/shared.js";
 
 function create_main_fragment(component, ctx) {
 	var svg, g, g_1;
@@ -25,11 +25,11 @@ function create_main_fragment(component, ctx) {
 			}
 		},
 
-		u() {
-			detachNode(svg);
-		},
-
-		d: noop
+		d(detach) {
+			if (detach) {
+				detachNode(svg);
+			}
+		}
 	};
 }
 
diff --git a/test/js/samples/each-block-changed-check/expected-bundle.js b/test/js/samples/each-block-changed-check/expected-bundle.js
index e7f7e56af1..353346c205 100644
--- a/test/js/samples/each-block-changed-check/expected-bundle.js
+++ b/test/js/samples/each-block-changed-check/expected-bundle.js
@@ -23,9 +23,9 @@ function detachAfter(before) {
 	}
 }
 
-function destroyEach(iterations) {
+function destroyEach(iterations, detach) {
 	for (var i = 0; i < iterations.length; i += 1) {
-		if (iterations[i]) iterations[i].d();
+		if (iterations[i]) iterations[i].d(detach);
 	}
 }
 
@@ -46,8 +46,7 @@ function destroy(detach) {
 	this.fire('destroy');
 	this.set = noop;
 
-	if (detach !== false) this._fragment.u();
-	this._fragment.d();
+	this._fragment.d(detach !== false);
 	this._fragment = null;
 	this._state = {};
 }
@@ -136,10 +135,6 @@ function _mount(target, anchor) {
 	this._fragment[this._fragment.i ? 'i' : 'm'](target, anchor || null);
 }
 
-function _unmount() {
-	if (this._fragment) this._fragment.u();
-}
-
 var proto = {
 	destroy,
 	get,
@@ -149,7 +144,6 @@ var proto = {
 	_recompute: noop,
 	_set,
 	_mount,
-	_unmount,
 	_differs
 };
 
@@ -204,8 +198,7 @@ function create_main_fragment(component, ctx) {
 				}
 
 				for (; i < each_blocks.length; i += 1) {
-					each_blocks[i].u();
-					each_blocks[i].d();
+					each_blocks[i].d(1);
 				}
 				each_blocks.length = each_value.length;
 			}
@@ -215,17 +208,13 @@ function create_main_fragment(component, ctx) {
 			}
 		},
 
-		u() {
-			for (var i = 0; i < each_blocks.length; i += 1) {
-				each_blocks[i].u();
-			}
-
-			detachNode(text);
-			detachNode(p);
-		},
+		d(detach) {
+			destroyEach(each_blocks, detach);
 
-		d() {
-			destroyEach(each_blocks);
+			if (detach) {
+				detachNode(text);
+				detachNode(p);
+			}
 		}
 	};
 }
@@ -281,13 +270,16 @@ function create_each_block(component, ctx) {
 			}
 		},
 
-		u() {
-			detachAfter(raw_before);
+		d(detach) {
+			if (detach) {
+				detachAfter(raw_before);
+			}
 
-			detachNode(div);
-		},
 
-		d: noop
+			if (detach) {
+				detachNode(div);
+			}
+		}
 	};
 }
 
diff --git a/test/js/samples/each-block-changed-check/expected.js b/test/js/samples/each-block-changed-check/expected.js
index 7febac791f..f368493846 100644
--- a/test/js/samples/each-block-changed-check/expected.js
+++ b/test/js/samples/each-block-changed-check/expected.js
@@ -1,5 +1,5 @@
 /* generated by Svelte vX.Y.Z */
-import { appendNode, assign, createElement, createText, destroyEach, detachAfter, detachNode, init, insertNode, noop, proto } from "svelte/shared.js";
+import { appendNode, assign, createElement, createText, destroyEach, detachAfter, detachNode, init, insertNode, proto } from "svelte/shared.js";
 
 function create_main_fragment(component, ctx) {
 	var text, p, text_1;
@@ -50,8 +50,7 @@ function create_main_fragment(component, ctx) {
 				}
 
 				for (; i < each_blocks.length; i += 1) {
-					each_blocks[i].u();
-					each_blocks[i].d();
+					each_blocks[i].d(1);
 				}
 				each_blocks.length = each_value.length;
 			}
@@ -61,17 +60,13 @@ function create_main_fragment(component, ctx) {
 			}
 		},
 
-		u() {
-			for (var i = 0; i < each_blocks.length; i += 1) {
-				each_blocks[i].u();
-			}
+		d(detach) {
+			destroyEach(each_blocks, detach);
 
-			detachNode(text);
-			detachNode(p);
-		},
-
-		d() {
-			destroyEach(each_blocks);
+			if (detach) {
+				detachNode(text);
+				detachNode(p);
+			}
 		}
 	};
 }
@@ -127,13 +122,16 @@ function create_each_block(component, ctx) {
 			}
 		},
 
-		u() {
-			detachAfter(raw_before);
+		d(detach) {
+			if (detach) {
+				detachAfter(raw_before);
+			}
 
-			detachNode(div);
-		},
 
-		d: noop
+			if (detach) {
+				detachNode(div);
+			}
+		}
 	};
 }
 
diff --git a/test/js/samples/event-handlers-custom/expected-bundle.js b/test/js/samples/event-handlers-custom/expected-bundle.js
index c66153dd23..10715bd84c 100644
--- a/test/js/samples/event-handlers-custom/expected-bundle.js
+++ b/test/js/samples/event-handlers-custom/expected-bundle.js
@@ -26,8 +26,7 @@ function destroy(detach) {
 	this.fire('destroy');
 	this.set = noop;
 
-	if (detach !== false) this._fragment.u();
-	this._fragment.d();
+	this._fragment.d(detach !== false);
 	this._fragment = null;
 	this._state = {};
 }
@@ -116,10 +115,6 @@ function _mount(target, anchor) {
 	this._fragment[this._fragment.i ? 'i' : 'm'](target, anchor || null);
 }
 
-function _unmount() {
-	if (this._fragment) this._fragment.u();
-}
-
 var proto = {
 	destroy,
 	get,
@@ -129,7 +124,6 @@ var proto = {
 	_recompute: noop,
 	_set,
 	_mount,
-	_unmount,
 	_differs
 };
 
@@ -165,11 +159,11 @@ function create_main_fragment(component, ctx) {
 
 		},
 
-		u() {
-			detachNode(button);
-		},
+		d(detach) {
+			if (detach) {
+				detachNode(button);
+			}
 
-		d() {
 			foo_handler.destroy();
 		}
 	};
diff --git a/test/js/samples/event-handlers-custom/expected.js b/test/js/samples/event-handlers-custom/expected.js
index cc161cadaf..86741c470c 100644
--- a/test/js/samples/event-handlers-custom/expected.js
+++ b/test/js/samples/event-handlers-custom/expected.js
@@ -32,11 +32,11 @@ function create_main_fragment(component, ctx) {
 
 		},
 
-		u() {
-			detachNode(button);
-		},
+		d(detach) {
+			if (detach) {
+				detachNode(button);
+			}
 
-		d() {
 			foo_handler.destroy();
 		}
 	};
diff --git a/test/js/samples/head-no-whitespace/expected-bundle.js b/test/js/samples/head-no-whitespace/expected-bundle.js
index bee02e637f..539ea3e5a4 100644
--- a/test/js/samples/head-no-whitespace/expected-bundle.js
+++ b/test/js/samples/head-no-whitespace/expected-bundle.js
@@ -26,8 +26,7 @@ function destroy(detach) {
 	this.fire('destroy');
 	this.set = noop;
 
-	if (detach !== false) this._fragment.u();
-	this._fragment.d();
+	this._fragment.d(detach !== false);
 	this._fragment = null;
 	this._state = {};
 }
@@ -116,10 +115,6 @@ function _mount(target, anchor) {
 	this._fragment[this._fragment.i ? 'i' : 'm'](target, anchor || null);
 }
 
-function _unmount() {
-	if (this._fragment) this._fragment.u();
-}
-
 var proto = {
 	destroy,
 	get,
@@ -129,7 +124,6 @@ var proto = {
 	_recompute: noop,
 	_set,
 	_mount,
-	_unmount,
 	_differs
 };
 
@@ -155,12 +149,10 @@ function create_main_fragment(component, ctx) {
 
 		p: noop,
 
-		u() {
+		d(detach) {
 			detachNode(meta);
 			detachNode(meta_1);
-		},
-
-		d: noop
+		}
 	};
 }
 
diff --git a/test/js/samples/head-no-whitespace/expected.js b/test/js/samples/head-no-whitespace/expected.js
index d0eb2ddcd9..58b3f0e311 100644
--- a/test/js/samples/head-no-whitespace/expected.js
+++ b/test/js/samples/head-no-whitespace/expected.js
@@ -21,12 +21,10 @@ function create_main_fragment(component, ctx) {
 
 		p: noop,
 
-		u() {
+		d(detach) {
 			detachNode(meta);
 			detachNode(meta_1);
-		},
-
-		d: noop
+		}
 	};
 }
 
diff --git a/test/js/samples/if-block-no-update/expected-bundle.js b/test/js/samples/if-block-no-update/expected-bundle.js
index ce8d32f624..d54a62c227 100644
--- a/test/js/samples/if-block-no-update/expected-bundle.js
+++ b/test/js/samples/if-block-no-update/expected-bundle.js
@@ -30,8 +30,7 @@ function destroy(detach) {
 	this.fire('destroy');
 	this.set = noop;
 
-	if (detach !== false) this._fragment.u();
-	this._fragment.d();
+	this._fragment.d(detach !== false);
 	this._fragment = null;
 	this._state = {};
 }
@@ -120,10 +119,6 @@ function _mount(target, anchor) {
 	this._fragment[this._fragment.i ? 'i' : 'm'](target, anchor || null);
 }
 
-function _unmount() {
-	if (this._fragment) this._fragment.u();
-}
-
 var proto = {
 	destroy,
 	get,
@@ -133,7 +128,6 @@ var proto = {
 	_recompute: noop,
 	_set,
 	_mount,
-	_unmount,
 	_differs
 };
 
@@ -163,21 +157,18 @@ function create_main_fragment(component, ctx) {
 
 		p(changed, ctx) {
 			if (current_block_type !== (current_block_type = select_block_type(ctx))) {
-				if_block.u();
-				if_block.d();
+				if_block.d(1);
 				if_block = current_block_type(component, ctx);
 				if_block.c();
 				if_block.m(if_block_anchor.parentNode, if_block_anchor);
 			}
 		},
 
-		u() {
-			if_block.u();
-			detachNode(if_block_anchor);
-		},
-
-		d() {
-			if_block.d();
+		d(detach) {
+			if_block.d(detach);
+			if (detach) {
+				detachNode(if_block_anchor);
+			}
 		}
 	};
 }
@@ -196,11 +187,11 @@ function create_if_block(component, ctx) {
 			insertNode(p, target, anchor);
 		},
 
-		u() {
-			detachNode(p);
-		},
-
-		d: noop
+		d(detach) {
+			if (detach) {
+				detachNode(p);
+			}
+		}
 	};
 }
 
@@ -218,11 +209,11 @@ function create_if_block_1(component, ctx) {
 			insertNode(p, target, anchor);
 		},
 
-		u() {
-			detachNode(p);
-		},
-
-		d: noop
+		d(detach) {
+			if (detach) {
+				detachNode(p);
+			}
+		}
 	};
 }
 
diff --git a/test/js/samples/if-block-no-update/expected.js b/test/js/samples/if-block-no-update/expected.js
index 783c4fc56c..6bed171850 100644
--- a/test/js/samples/if-block-no-update/expected.js
+++ b/test/js/samples/if-block-no-update/expected.js
@@ -1,5 +1,5 @@
 /* generated by Svelte vX.Y.Z */
-import { assign, createComment, createElement, detachNode, init, insertNode, noop, proto } from "svelte/shared.js";
+import { assign, createComment, createElement, detachNode, init, insertNode, proto } from "svelte/shared.js";
 
 function create_main_fragment(component, ctx) {
 	var if_block_anchor;
@@ -25,21 +25,18 @@ function create_main_fragment(component, ctx) {
 
 		p(changed, ctx) {
 			if (current_block_type !== (current_block_type = select_block_type(ctx))) {
-				if_block.u();
-				if_block.d();
+				if_block.d(1);
 				if_block = current_block_type(component, ctx);
 				if_block.c();
 				if_block.m(if_block_anchor.parentNode, if_block_anchor);
 			}
 		},
 
-		u() {
-			if_block.u();
-			detachNode(if_block_anchor);
-		},
-
-		d() {
-			if_block.d();
+		d(detach) {
+			if_block.d(detach);
+			if (detach) {
+				detachNode(if_block_anchor);
+			}
 		}
 	};
 }
@@ -58,11 +55,11 @@ function create_if_block(component, ctx) {
 			insertNode(p, target, anchor);
 		},
 
-		u() {
-			detachNode(p);
-		},
-
-		d: noop
+		d(detach) {
+			if (detach) {
+				detachNode(p);
+			}
+		}
 	};
 }
 
@@ -80,11 +77,11 @@ function create_if_block_1(component, ctx) {
 			insertNode(p, target, anchor);
 		},
 
-		u() {
-			detachNode(p);
-		},
-
-		d: noop
+		d(detach) {
+			if (detach) {
+				detachNode(p);
+			}
+		}
 	};
 }
 
diff --git a/test/js/samples/if-block-simple/expected-bundle.js b/test/js/samples/if-block-simple/expected-bundle.js
index ee5b87f32c..9a067201fb 100644
--- a/test/js/samples/if-block-simple/expected-bundle.js
+++ b/test/js/samples/if-block-simple/expected-bundle.js
@@ -30,8 +30,7 @@ function destroy(detach) {
 	this.fire('destroy');
 	this.set = noop;
 
-	if (detach !== false) this._fragment.u();
-	this._fragment.d();
+	this._fragment.d(detach !== false);
 	this._fragment = null;
 	this._state = {};
 }
@@ -120,10 +119,6 @@ function _mount(target, anchor) {
 	this._fragment[this._fragment.i ? 'i' : 'm'](target, anchor || null);
 }
 
-function _unmount() {
-	if (this._fragment) this._fragment.u();
-}
-
 var proto = {
 	destroy,
 	get,
@@ -133,7 +128,6 @@ var proto = {
 	_recompute: noop,
 	_set,
 	_mount,
-	_unmount,
 	_differs
 };
 
@@ -163,19 +157,16 @@ function create_main_fragment(component, ctx) {
 					if_block.m(if_block_anchor.parentNode, if_block_anchor);
 				}
 			} else if (if_block) {
-				if_block.u();
-				if_block.d();
+				if_block.d(1);
 				if_block = null;
 			}
 		},
 
-		u() {
-			if (if_block) if_block.u();
-			detachNode(if_block_anchor);
-		},
-
-		d() {
-			if (if_block) if_block.d();
+		d(detach) {
+			if (if_block) if_block.d(detach);
+			if (detach) {
+				detachNode(if_block_anchor);
+			}
 		}
 	};
 }
@@ -194,11 +185,11 @@ function create_if_block(component, ctx) {
 			insertNode(p, target, anchor);
 		},
 
-		u() {
-			detachNode(p);
-		},
-
-		d: noop
+		d(detach) {
+			if (detach) {
+				detachNode(p);
+			}
+		}
 	};
 }
 
diff --git a/test/js/samples/if-block-simple/expected.js b/test/js/samples/if-block-simple/expected.js
index ae583b652a..98458d918f 100644
--- a/test/js/samples/if-block-simple/expected.js
+++ b/test/js/samples/if-block-simple/expected.js
@@ -1,5 +1,5 @@
 /* generated by Svelte vX.Y.Z */
-import { assign, createComment, createElement, detachNode, init, insertNode, noop, proto } from "svelte/shared.js";
+import { assign, createComment, createElement, detachNode, init, insertNode, proto } from "svelte/shared.js";
 
 function create_main_fragment(component, ctx) {
 	var if_block_anchor;
@@ -25,19 +25,16 @@ function create_main_fragment(component, ctx) {
 					if_block.m(if_block_anchor.parentNode, if_block_anchor);
 				}
 			} else if (if_block) {
-				if_block.u();
-				if_block.d();
+				if_block.d(1);
 				if_block = null;
 			}
 		},
 
-		u() {
-			if (if_block) if_block.u();
-			detachNode(if_block_anchor);
-		},
-
-		d() {
-			if (if_block) if_block.d();
+		d(detach) {
+			if (if_block) if_block.d(detach);
+			if (detach) {
+				detachNode(if_block_anchor);
+			}
 		}
 	};
 }
@@ -56,11 +53,11 @@ function create_if_block(component, ctx) {
 			insertNode(p, target, anchor);
 		},
 
-		u() {
-			detachNode(p);
-		},
-
-		d: noop
+		d(detach) {
+			if (detach) {
+				detachNode(p);
+			}
+		}
 	};
 }
 
diff --git a/test/js/samples/inline-style-optimized-multiple/expected-bundle.js b/test/js/samples/inline-style-optimized-multiple/expected-bundle.js
index 64b9e9f612..13da6e5fc0 100644
--- a/test/js/samples/inline-style-optimized-multiple/expected-bundle.js
+++ b/test/js/samples/inline-style-optimized-multiple/expected-bundle.js
@@ -30,8 +30,7 @@ function destroy(detach) {
 	this.fire('destroy');
 	this.set = noop;
 
-	if (detach !== false) this._fragment.u();
-	this._fragment.d();
+	this._fragment.d(detach !== false);
 	this._fragment = null;
 	this._state = {};
 }
@@ -120,10 +119,6 @@ function _mount(target, anchor) {
 	this._fragment[this._fragment.i ? 'i' : 'm'](target, anchor || null);
 }
 
-function _unmount() {
-	if (this._fragment) this._fragment.u();
-}
-
 var proto = {
 	destroy,
 	get,
@@ -133,7 +128,6 @@ var proto = {
 	_recompute: noop,
 	_set,
 	_mount,
-	_unmount,
 	_differs
 };
 
@@ -163,11 +157,11 @@ function create_main_fragment(component, ctx) {
 			}
 		},
 
-		u() {
-			detachNode(div);
-		},
-
-		d: noop
+		d(detach) {
+			if (detach) {
+				detachNode(div);
+			}
+		}
 	};
 }
 
diff --git a/test/js/samples/inline-style-optimized-multiple/expected.js b/test/js/samples/inline-style-optimized-multiple/expected.js
index d44a56e57a..742da2b3d9 100644
--- a/test/js/samples/inline-style-optimized-multiple/expected.js
+++ b/test/js/samples/inline-style-optimized-multiple/expected.js
@@ -1,5 +1,5 @@
 /* generated by Svelte vX.Y.Z */
-import { assign, createElement, detachNode, init, insertNode, noop, proto, setStyle } from "svelte/shared.js";
+import { assign, createElement, detachNode, init, insertNode, proto, setStyle } from "svelte/shared.js";
 
 function create_main_fragment(component, ctx) {
 	var div;
@@ -25,11 +25,11 @@ function create_main_fragment(component, ctx) {
 			}
 		},
 
-		u() {
-			detachNode(div);
-		},
-
-		d: noop
+		d(detach) {
+			if (detach) {
+				detachNode(div);
+			}
+		}
 	};
 }
 
diff --git a/test/js/samples/inline-style-optimized-url/expected-bundle.js b/test/js/samples/inline-style-optimized-url/expected-bundle.js
index 9d66c5d9d3..f27fd1f154 100644
--- a/test/js/samples/inline-style-optimized-url/expected-bundle.js
+++ b/test/js/samples/inline-style-optimized-url/expected-bundle.js
@@ -30,8 +30,7 @@ function destroy(detach) {
 	this.fire('destroy');
 	this.set = noop;
 
-	if (detach !== false) this._fragment.u();
-	this._fragment.d();
+	this._fragment.d(detach !== false);
 	this._fragment = null;
 	this._state = {};
 }
@@ -120,10 +119,6 @@ function _mount(target, anchor) {
 	this._fragment[this._fragment.i ? 'i' : 'm'](target, anchor || null);
 }
 
-function _unmount() {
-	if (this._fragment) this._fragment.u();
-}
-
 var proto = {
 	destroy,
 	get,
@@ -133,7 +128,6 @@ var proto = {
 	_recompute: noop,
 	_set,
 	_mount,
-	_unmount,
 	_differs
 };
 
@@ -158,11 +152,11 @@ function create_main_fragment(component, ctx) {
 			}
 		},
 
-		u() {
-			detachNode(div);
-		},
-
-		d: noop
+		d(detach) {
+			if (detach) {
+				detachNode(div);
+			}
+		}
 	};
 }
 
diff --git a/test/js/samples/inline-style-optimized-url/expected.js b/test/js/samples/inline-style-optimized-url/expected.js
index b6ade43a35..2eb51e0818 100644
--- a/test/js/samples/inline-style-optimized-url/expected.js
+++ b/test/js/samples/inline-style-optimized-url/expected.js
@@ -1,5 +1,5 @@
 /* generated by Svelte vX.Y.Z */
-import { assign, createElement, detachNode, init, insertNode, noop, proto, setStyle } from "svelte/shared.js";
+import { assign, createElement, detachNode, init, insertNode, proto, setStyle } from "svelte/shared.js";
 
 function create_main_fragment(component, ctx) {
 	var div;
@@ -20,11 +20,11 @@ function create_main_fragment(component, ctx) {
 			}
 		},
 
-		u() {
-			detachNode(div);
-		},
-
-		d: noop
+		d(detach) {
+			if (detach) {
+				detachNode(div);
+			}
+		}
 	};
 }
 
diff --git a/test/js/samples/inline-style-optimized/expected-bundle.js b/test/js/samples/inline-style-optimized/expected-bundle.js
index dea96b427b..1df7465c86 100644
--- a/test/js/samples/inline-style-optimized/expected-bundle.js
+++ b/test/js/samples/inline-style-optimized/expected-bundle.js
@@ -30,8 +30,7 @@ function destroy(detach) {
 	this.fire('destroy');
 	this.set = noop;
 
-	if (detach !== false) this._fragment.u();
-	this._fragment.d();
+	this._fragment.d(detach !== false);
 	this._fragment = null;
 	this._state = {};
 }
@@ -120,10 +119,6 @@ function _mount(target, anchor) {
 	this._fragment[this._fragment.i ? 'i' : 'm'](target, anchor || null);
 }
 
-function _unmount() {
-	if (this._fragment) this._fragment.u();
-}
-
 var proto = {
 	destroy,
 	get,
@@ -133,7 +128,6 @@ var proto = {
 	_recompute: noop,
 	_set,
 	_mount,
-	_unmount,
 	_differs
 };
 
@@ -158,11 +152,11 @@ function create_main_fragment(component, ctx) {
 			}
 		},
 
-		u() {
-			detachNode(div);
-		},
-
-		d: noop
+		d(detach) {
+			if (detach) {
+				detachNode(div);
+			}
+		}
 	};
 }
 
diff --git a/test/js/samples/inline-style-optimized/expected.js b/test/js/samples/inline-style-optimized/expected.js
index 9574f5d196..9c55bc6e84 100644
--- a/test/js/samples/inline-style-optimized/expected.js
+++ b/test/js/samples/inline-style-optimized/expected.js
@@ -1,5 +1,5 @@
 /* generated by Svelte vX.Y.Z */
-import { assign, createElement, detachNode, init, insertNode, noop, proto, setStyle } from "svelte/shared.js";
+import { assign, createElement, detachNode, init, insertNode, proto, setStyle } from "svelte/shared.js";
 
 function create_main_fragment(component, ctx) {
 	var div;
@@ -20,11 +20,11 @@ function create_main_fragment(component, ctx) {
 			}
 		},
 
-		u() {
-			detachNode(div);
-		},
-
-		d: noop
+		d(detach) {
+			if (detach) {
+				detachNode(div);
+			}
+		}
 	};
 }
 
diff --git a/test/js/samples/inline-style-unoptimized/expected-bundle.js b/test/js/samples/inline-style-unoptimized/expected-bundle.js
index 3719ea1587..ed8e4fd01c 100644
--- a/test/js/samples/inline-style-unoptimized/expected-bundle.js
+++ b/test/js/samples/inline-style-unoptimized/expected-bundle.js
@@ -30,8 +30,7 @@ function destroy(detach) {
 	this.fire('destroy');
 	this.set = noop;
 
-	if (detach !== false) this._fragment.u();
-	this._fragment.d();
+	this._fragment.d(detach !== false);
 	this._fragment = null;
 	this._state = {};
 }
@@ -120,10 +119,6 @@ function _mount(target, anchor) {
 	this._fragment[this._fragment.i ? 'i' : 'm'](target, anchor || null);
 }
 
-function _unmount() {
-	if (this._fragment) this._fragment.u();
-}
-
 var proto = {
 	destroy,
 	get,
@@ -133,7 +128,6 @@ var proto = {
 	_recompute: noop,
 	_set,
 	_mount,
-	_unmount,
 	_differs
 };
 
@@ -167,13 +161,13 @@ function create_main_fragment(component, ctx) {
 			}
 		},
 
-		u() {
-			detachNode(div);
-			detachNode(text);
-			detachNode(div_1);
-		},
-
-		d: noop
+		d(detach) {
+			if (detach) {
+				detachNode(div);
+				detachNode(text);
+				detachNode(div_1);
+			}
+		}
 	};
 }
 
diff --git a/test/js/samples/inline-style-unoptimized/expected.js b/test/js/samples/inline-style-unoptimized/expected.js
index a1fc3d49f4..41ffd501e0 100644
--- a/test/js/samples/inline-style-unoptimized/expected.js
+++ b/test/js/samples/inline-style-unoptimized/expected.js
@@ -1,5 +1,5 @@
 /* generated by Svelte vX.Y.Z */
-import { assign, createElement, createText, detachNode, init, insertNode, noop, proto } from "svelte/shared.js";
+import { assign, createElement, createText, detachNode, init, insertNode, proto } from "svelte/shared.js";
 
 function create_main_fragment(component, ctx) {
 	var div, text, div_1, div_1_style_value;
@@ -29,13 +29,13 @@ function create_main_fragment(component, ctx) {
 			}
 		},
 
-		u() {
-			detachNode(div);
-			detachNode(text);
-			detachNode(div_1);
-		},
-
-		d: noop
+		d(detach) {
+			if (detach) {
+				detachNode(div);
+				detachNode(text);
+				detachNode(div_1);
+			}
+		}
 	};
 }
 
diff --git a/test/js/samples/input-without-blowback-guard/expected-bundle.js b/test/js/samples/input-without-blowback-guard/expected-bundle.js
index 6c5b717096..67915bc81b 100644
--- a/test/js/samples/input-without-blowback-guard/expected-bundle.js
+++ b/test/js/samples/input-without-blowback-guard/expected-bundle.js
@@ -38,8 +38,7 @@ function destroy(detach) {
 	this.fire('destroy');
 	this.set = noop;
 
-	if (detach !== false) this._fragment.u();
-	this._fragment.d();
+	this._fragment.d(detach !== false);
 	this._fragment = null;
 	this._state = {};
 }
@@ -128,10 +127,6 @@ function _mount(target, anchor) {
 	this._fragment[this._fragment.i ? 'i' : 'm'](target, anchor || null);
 }
 
-function _unmount() {
-	if (this._fragment) this._fragment.u();
-}
-
 var proto = {
 	destroy,
 	get,
@@ -141,7 +136,6 @@ var proto = {
 	_recompute: noop,
 	_set,
 	_mount,
-	_unmount,
 	_differs
 };
 
@@ -171,11 +165,11 @@ function create_main_fragment(component, ctx) {
 			input.checked = ctx.foo;
 		},
 
-		u() {
-			detachNode(input);
-		},
+		d(detach) {
+			if (detach) {
+				detachNode(input);
+			}
 
-		d() {
 			removeListener(input, "change", input_change_handler);
 		}
 	};
diff --git a/test/js/samples/input-without-blowback-guard/expected.js b/test/js/samples/input-without-blowback-guard/expected.js
index 7aee1cb407..635987f16b 100644
--- a/test/js/samples/input-without-blowback-guard/expected.js
+++ b/test/js/samples/input-without-blowback-guard/expected.js
@@ -25,11 +25,11 @@ function create_main_fragment(component, ctx) {
 			input.checked = ctx.foo;
 		},
 
-		u() {
-			detachNode(input);
-		},
+		d(detach) {
+			if (detach) {
+				detachNode(input);
+			}
 
-		d() {
 			removeListener(input, "change", input_change_handler);
 		}
 	};
diff --git a/test/js/samples/legacy-input-type/expected-bundle.js b/test/js/samples/legacy-input-type/expected-bundle.js
index b3469f7864..9f806ed42a 100644
--- a/test/js/samples/legacy-input-type/expected-bundle.js
+++ b/test/js/samples/legacy-input-type/expected-bundle.js
@@ -32,8 +32,7 @@ function destroy(detach) {
 	this.fire('destroy');
 	this.set = noop;
 
-	if (detach !== false) this._fragment.u();
-	this._fragment.d();
+	this._fragment.d(detach !== false);
 	this._fragment = null;
 	this._state = {};
 }
@@ -122,10 +121,6 @@ function _mount(target, anchor) {
 	this._fragment[this._fragment.i ? 'i' : 'm'](target, anchor || null);
 }
 
-function _unmount() {
-	if (this._fragment) this._fragment.u();
-}
-
 var proto = {
 	destroy,
 	get,
@@ -135,7 +130,6 @@ var proto = {
 	_recompute: noop,
 	_set,
 	_mount,
-	_unmount,
 	_differs
 };
 
@@ -156,11 +150,11 @@ function create_main_fragment(component, ctx) {
 
 		p: noop,
 
-		u() {
-			detachNode(input);
-		},
-
-		d: noop
+		d(detach) {
+			if (detach) {
+				detachNode(input);
+			}
+		}
 	};
 }
 
diff --git a/test/js/samples/legacy-input-type/expected.js b/test/js/samples/legacy-input-type/expected.js
index 89e31fa479..2e1c279b20 100644
--- a/test/js/samples/legacy-input-type/expected.js
+++ b/test/js/samples/legacy-input-type/expected.js
@@ -16,11 +16,11 @@ function create_main_fragment(component, ctx) {
 
 		p: noop,
 
-		u() {
-			detachNode(input);
-		},
-
-		d: noop
+		d(detach) {
+			if (detach) {
+				detachNode(input);
+			}
+		}
 	};
 }
 
diff --git a/test/js/samples/media-bindings/expected-bundle.js b/test/js/samples/media-bindings/expected-bundle.js
index 8013f2b11f..fbb235a80d 100644
--- a/test/js/samples/media-bindings/expected-bundle.js
+++ b/test/js/samples/media-bindings/expected-bundle.js
@@ -42,8 +42,7 @@ function destroy(detach) {
 	this.fire('destroy');
 	this.set = noop;
 
-	if (detach !== false) this._fragment.u();
-	this._fragment.d();
+	this._fragment.d(detach !== false);
 	this._fragment = null;
 	this._state = {};
 }
@@ -132,10 +131,6 @@ function _mount(target, anchor) {
 	this._fragment[this._fragment.i ? 'i' : 'm'](target, anchor || null);
 }
 
-function _unmount() {
-	if (this._fragment) this._fragment.u();
-}
-
 var proto = {
 	destroy,
 	get,
@@ -145,7 +140,6 @@ var proto = {
 	_recompute: noop,
 	_set,
 	_mount,
-	_unmount,
 	_differs
 };
 
@@ -214,11 +208,11 @@ function create_main_fragment(component, ctx) {
 			if (!audio_updating && !isNaN(ctx.volume)) audio.volume = ctx.volume;
 		},
 
-		u() {
-			detachNode(audio);
-		},
+		d(detach) {
+			if (detach) {
+				detachNode(audio);
+			}
 
-		d() {
 			removeListener(audio, "timeupdate", audio_timeupdate_handler);
 			removeListener(audio, "durationchange", audio_durationchange_handler);
 			removeListener(audio, "play", audio_play_pause_handler);
diff --git a/test/js/samples/media-bindings/expected.js b/test/js/samples/media-bindings/expected.js
index 2b4c3b627c..f2400877e2 100644
--- a/test/js/samples/media-bindings/expected.js
+++ b/test/js/samples/media-bindings/expected.js
@@ -64,11 +64,11 @@ function create_main_fragment(component, ctx) {
 			if (!audio_updating && !isNaN(ctx.volume)) audio.volume = ctx.volume;
 		},
 
-		u() {
-			detachNode(audio);
-		},
+		d(detach) {
+			if (detach) {
+				detachNode(audio);
+			}
 
-		d() {
 			removeListener(audio, "timeupdate", audio_timeupdate_handler);
 			removeListener(audio, "durationchange", audio_durationchange_handler);
 			removeListener(audio, "play", audio_play_pause_handler);
diff --git a/test/js/samples/non-imported-component/expected-bundle.js b/test/js/samples/non-imported-component/expected-bundle.js
index 0611137fb9..bfab868082 100644
--- a/test/js/samples/non-imported-component/expected-bundle.js
+++ b/test/js/samples/non-imported-component/expected-bundle.js
@@ -28,8 +28,7 @@ function destroy(detach) {
 	this.fire('destroy');
 	this.set = noop;
 
-	if (detach !== false) this._fragment.u();
-	this._fragment.d();
+	this._fragment.d(detach !== false);
 	this._fragment = null;
 	this._state = {};
 }
@@ -118,10 +117,6 @@ function _mount(target, anchor) {
 	this._fragment[this._fragment.i ? 'i' : 'm'](target, anchor || null);
 }
 
-function _unmount() {
-	if (this._fragment) this._fragment.u();
-}
-
 var proto = {
 	destroy,
 	get,
@@ -131,7 +126,6 @@ var proto = {
 	_recompute: noop,
 	_set,
 	_mount,
-	_unmount,
 	_differs
 };
 
@@ -165,15 +159,13 @@ function create_main_fragment(component, ctx) {
 
 		p: noop,
 
-		u() {
-			imported._unmount();
-			detachNode(text);
-			nonimported._unmount();
-		},
+		d(detach) {
+			imported.destroy(detach);
+			if (detach) {
+				detachNode(text);
+			}
 
-		d() {
-			imported.destroy(false);
-			nonimported.destroy(false);
+			nonimported.destroy(detach);
 		}
 	};
 }
diff --git a/test/js/samples/non-imported-component/expected.js b/test/js/samples/non-imported-component/expected.js
index 4af3611542..c070fa76d4 100644
--- a/test/js/samples/non-imported-component/expected.js
+++ b/test/js/samples/non-imported-component/expected.js
@@ -30,15 +30,13 @@ function create_main_fragment(component, ctx) {
 
 		p: noop,
 
-		u() {
-			imported._unmount();
-			detachNode(text);
-			nonimported._unmount();
-		},
+		d(detach) {
+			imported.destroy(detach);
+			if (detach) {
+				detachNode(text);
+			}
 
-		d() {
-			imported.destroy(false);
-			nonimported.destroy(false);
+			nonimported.destroy(detach);
 		}
 	};
 }
diff --git a/test/js/samples/setup-method/expected-bundle.js b/test/js/samples/setup-method/expected-bundle.js
index 83c58b1f41..30d69d6180 100644
--- a/test/js/samples/setup-method/expected-bundle.js
+++ b/test/js/samples/setup-method/expected-bundle.js
@@ -14,8 +14,7 @@ function destroy(detach) {
 	this.fire('destroy');
 	this.set = noop;
 
-	if (detach !== false) this._fragment.u();
-	this._fragment.d();
+	this._fragment.d(detach !== false);
 	this._fragment = null;
 	this._state = {};
 }
@@ -104,10 +103,6 @@ function _mount(target, anchor) {
 	this._fragment[this._fragment.i ? 'i' : 'm'](target, anchor || null);
 }
 
-function _unmount() {
-	if (this._fragment) this._fragment.u();
-}
-
 var proto = {
 	destroy,
 	get,
@@ -117,7 +112,6 @@ var proto = {
 	_recompute: noop,
 	_set,
 	_mount,
-	_unmount,
 	_differs
 };
 
@@ -148,8 +142,6 @@ function create_main_fragment(component, ctx) {
 
 		p: noop,
 
-		u: noop,
-
 		d: noop
 	};
 }
diff --git a/test/js/samples/setup-method/expected.js b/test/js/samples/setup-method/expected.js
index cb565b0f74..855e7635b0 100644
--- a/test/js/samples/setup-method/expected.js
+++ b/test/js/samples/setup-method/expected.js
@@ -26,8 +26,6 @@ function create_main_fragment(component, ctx) {
 
 		p: noop,
 
-		u: noop,
-
 		d: noop
 	};
 }
diff --git a/test/js/samples/svg-title/expected-bundle.js b/test/js/samples/svg-title/expected-bundle.js
index c80b95ef78..faf86f14cb 100644
--- a/test/js/samples/svg-title/expected-bundle.js
+++ b/test/js/samples/svg-title/expected-bundle.js
@@ -34,8 +34,7 @@ function destroy(detach) {
 	this.fire('destroy');
 	this.set = noop;
 
-	if (detach !== false) this._fragment.u();
-	this._fragment.d();
+	this._fragment.d(detach !== false);
 	this._fragment = null;
 	this._state = {};
 }
@@ -124,10 +123,6 @@ function _mount(target, anchor) {
 	this._fragment[this._fragment.i ? 'i' : 'm'](target, anchor || null);
 }
 
-function _unmount() {
-	if (this._fragment) this._fragment.u();
-}
-
 var proto = {
 	destroy,
 	get,
@@ -137,7 +132,6 @@ var proto = {
 	_recompute: noop,
 	_set,
 	_mount,
-	_unmount,
 	_differs
 };
 
@@ -161,11 +155,11 @@ function create_main_fragment(component, ctx) {
 
 		p: noop,
 
-		u() {
-			detachNode(svg);
-		},
-
-		d: noop
+		d(detach) {
+			if (detach) {
+				detachNode(svg);
+			}
+		}
 	};
 }
 
diff --git a/test/js/samples/svg-title/expected.js b/test/js/samples/svg-title/expected.js
index df05dc331f..96a1ea09d1 100644
--- a/test/js/samples/svg-title/expected.js
+++ b/test/js/samples/svg-title/expected.js
@@ -19,11 +19,11 @@ function create_main_fragment(component, ctx) {
 
 		p: noop,
 
-		u() {
-			detachNode(svg);
-		},
-
-		d: noop
+		d(detach) {
+			if (detach) {
+				detachNode(svg);
+			}
+		}
 	};
 }
 
diff --git a/test/js/samples/title/expected-bundle.js b/test/js/samples/title/expected-bundle.js
index 10972a30e7..1c4fd5e84f 100644
--- a/test/js/samples/title/expected-bundle.js
+++ b/test/js/samples/title/expected-bundle.js
@@ -14,8 +14,7 @@ function destroy(detach) {
 	this.fire('destroy');
 	this.set = noop;
 
-	if (detach !== false) this._fragment.u();
-	this._fragment.d();
+	this._fragment.d(detach !== false);
 	this._fragment = null;
 	this._state = {};
 }
@@ -104,10 +103,6 @@ function _mount(target, anchor) {
 	this._fragment[this._fragment.i ? 'i' : 'm'](target, anchor || null);
 }
 
-function _unmount() {
-	if (this._fragment) this._fragment.u();
-}
-
 var proto = {
 	destroy,
 	get,
@@ -117,7 +112,6 @@ var proto = {
 	_recompute: noop,
 	_set,
 	_mount,
-	_unmount,
 	_differs
 };
 
@@ -139,8 +133,6 @@ function create_main_fragment(component, ctx) {
 			}
 		},
 
-		u: noop,
-
 		d: noop
 	};
 }
diff --git a/test/js/samples/title/expected.js b/test/js/samples/title/expected.js
index 75ef8925a3..f5aa312569 100644
--- a/test/js/samples/title/expected.js
+++ b/test/js/samples/title/expected.js
@@ -17,8 +17,6 @@ function create_main_fragment(component, ctx) {
 			}
 		},
 
-		u: noop,
-
 		d: noop
 	};
 }
diff --git a/test/js/samples/use-elements-as-anchors/expected-bundle.js b/test/js/samples/use-elements-as-anchors/expected-bundle.js
index 90d0e36438..3a3879b91e 100644
--- a/test/js/samples/use-elements-as-anchors/expected-bundle.js
+++ b/test/js/samples/use-elements-as-anchors/expected-bundle.js
@@ -38,8 +38,7 @@ function destroy(detach) {
 	this.fire('destroy');
 	this.set = noop;
 
-	if (detach !== false) this._fragment.u();
-	this._fragment.d();
+	this._fragment.d(detach !== false);
 	this._fragment = null;
 	this._state = {};
 }
@@ -128,10 +127,6 @@ function _mount(target, anchor) {
 	this._fragment[this._fragment.i ? 'i' : 'm'](target, anchor || null);
 }
 
-function _unmount() {
-	if (this._fragment) this._fragment.u();
-}
-
 var proto = {
 	destroy,
 	get,
@@ -141,7 +136,6 @@ var proto = {
 	_recompute: noop,
 	_set,
 	_mount,
-	_unmount,
 	_differs
 };
 
@@ -207,8 +201,7 @@ function create_main_fragment(component, ctx) {
 					if_block.m(div, text);
 				}
 			} else if (if_block) {
-				if_block.u();
-				if_block.d();
+				if_block.d(1);
 				if_block = null;
 			}
 
@@ -219,8 +212,7 @@ function create_main_fragment(component, ctx) {
 					if_block_1.m(div, text_3);
 				}
 			} else if (if_block_1) {
-				if_block_1.u();
-				if_block_1.d();
+				if_block_1.d(1);
 				if_block_1 = null;
 			}
 
@@ -231,8 +223,7 @@ function create_main_fragment(component, ctx) {
 					if_block_2.m(div, text_4);
 				}
 			} else if (if_block_2) {
-				if_block_2.u();
-				if_block_2.d();
+				if_block_2.d(1);
 				if_block_2 = null;
 			}
 
@@ -243,8 +234,7 @@ function create_main_fragment(component, ctx) {
 					if_block_3.m(div, null);
 				}
 			} else if (if_block_3) {
-				if_block_3.u();
-				if_block_3.d();
+				if_block_3.d(1);
 				if_block_3 = null;
 			}
 
@@ -255,29 +245,28 @@ function create_main_fragment(component, ctx) {
 					if_block_4.m(if_block_4_anchor.parentNode, if_block_4_anchor);
 				}
 			} else if (if_block_4) {
-				if_block_4.u();
-				if_block_4.d();
+				if_block_4.d(1);
 				if_block_4 = null;
 			}
 		},
 
-		u() {
-			detachNode(div);
-			if (if_block) if_block.u();
-			if (if_block_1) if_block_1.u();
-			if (if_block_2) if_block_2.u();
-			if (if_block_3) if_block_3.u();
-			detachNode(text_8);
-			if (if_block_4) if_block_4.u();
-			detachNode(if_block_4_anchor);
-		},
+		d(detach) {
+			if (detach) {
+				detachNode(div);
+			}
 
-		d() {
 			if (if_block) if_block.d();
 			if (if_block_1) if_block_1.d();
 			if (if_block_2) if_block_2.d();
 			if (if_block_3) if_block_3.d();
-			if (if_block_4) if_block_4.d();
+			if (detach) {
+				detachNode(text_8);
+			}
+
+			if (if_block_4) if_block_4.d(detach);
+			if (detach) {
+				detachNode(if_block_4_anchor);
+			}
 		}
 	};
 }
@@ -296,11 +285,11 @@ function create_if_block(component, ctx) {
 			insertNode(p, target, anchor);
 		},
 
-		u() {
-			detachNode(p);
-		},
-
-		d: noop
+		d(detach) {
+			if (detach) {
+				detachNode(p);
+			}
+		}
 	};
 }
 
@@ -318,11 +307,11 @@ function create_if_block_1(component, ctx) {
 			insertNode(p, target, anchor);
 		},
 
-		u() {
-			detachNode(p);
-		},
-
-		d: noop
+		d(detach) {
+			if (detach) {
+				detachNode(p);
+			}
+		}
 	};
 }
 
@@ -340,11 +329,11 @@ function create_if_block_2(component, ctx) {
 			insertNode(p, target, anchor);
 		},
 
-		u() {
-			detachNode(p);
-		},
-
-		d: noop
+		d(detach) {
+			if (detach) {
+				detachNode(p);
+			}
+		}
 	};
 }
 
@@ -362,11 +351,11 @@ function create_if_block_3(component, ctx) {
 			insertNode(p, target, anchor);
 		},
 
-		u() {
-			detachNode(p);
-		},
-
-		d: noop
+		d(detach) {
+			if (detach) {
+				detachNode(p);
+			}
+		}
 	};
 }
 
@@ -384,11 +373,11 @@ function create_if_block_4(component, ctx) {
 			insertNode(p, target, anchor);
 		},
 
-		u() {
-			detachNode(p);
-		},
-
-		d: noop
+		d(detach) {
+			if (detach) {
+				detachNode(p);
+			}
+		}
 	};
 }
 
diff --git a/test/js/samples/use-elements-as-anchors/expected.js b/test/js/samples/use-elements-as-anchors/expected.js
index 26b782988e..9e33cb6e03 100644
--- a/test/js/samples/use-elements-as-anchors/expected.js
+++ b/test/js/samples/use-elements-as-anchors/expected.js
@@ -1,5 +1,5 @@
 /* generated by Svelte vX.Y.Z */
-import { appendNode, assign, createComment, createElement, createText, detachNode, init, insertNode, noop, proto } from "svelte/shared.js";
+import { appendNode, assign, createComment, createElement, createText, detachNode, init, insertNode, proto } from "svelte/shared.js";
 
 function create_main_fragment(component, ctx) {
 	var div, text, p, text_2, text_3, text_4, p_1, text_6, text_8, if_block_4_anchor;
@@ -61,8 +61,7 @@ function create_main_fragment(component, ctx) {
 					if_block.m(div, text);
 				}
 			} else if (if_block) {
-				if_block.u();
-				if_block.d();
+				if_block.d(1);
 				if_block = null;
 			}
 
@@ -73,8 +72,7 @@ function create_main_fragment(component, ctx) {
 					if_block_1.m(div, text_3);
 				}
 			} else if (if_block_1) {
-				if_block_1.u();
-				if_block_1.d();
+				if_block_1.d(1);
 				if_block_1 = null;
 			}
 
@@ -85,8 +83,7 @@ function create_main_fragment(component, ctx) {
 					if_block_2.m(div, text_4);
 				}
 			} else if (if_block_2) {
-				if_block_2.u();
-				if_block_2.d();
+				if_block_2.d(1);
 				if_block_2 = null;
 			}
 
@@ -97,8 +94,7 @@ function create_main_fragment(component, ctx) {
 					if_block_3.m(div, null);
 				}
 			} else if (if_block_3) {
-				if_block_3.u();
-				if_block_3.d();
+				if_block_3.d(1);
 				if_block_3 = null;
 			}
 
@@ -109,29 +105,28 @@ function create_main_fragment(component, ctx) {
 					if_block_4.m(if_block_4_anchor.parentNode, if_block_4_anchor);
 				}
 			} else if (if_block_4) {
-				if_block_4.u();
-				if_block_4.d();
+				if_block_4.d(1);
 				if_block_4 = null;
 			}
 		},
 
-		u() {
-			detachNode(div);
-			if (if_block) if_block.u();
-			if (if_block_1) if_block_1.u();
-			if (if_block_2) if_block_2.u();
-			if (if_block_3) if_block_3.u();
-			detachNode(text_8);
-			if (if_block_4) if_block_4.u();
-			detachNode(if_block_4_anchor);
-		},
+		d(detach) {
+			if (detach) {
+				detachNode(div);
+			}
 
-		d() {
 			if (if_block) if_block.d();
 			if (if_block_1) if_block_1.d();
 			if (if_block_2) if_block_2.d();
 			if (if_block_3) if_block_3.d();
-			if (if_block_4) if_block_4.d();
+			if (detach) {
+				detachNode(text_8);
+			}
+
+			if (if_block_4) if_block_4.d(detach);
+			if (detach) {
+				detachNode(if_block_4_anchor);
+			}
 		}
 	};
 }
@@ -150,11 +145,11 @@ function create_if_block(component, ctx) {
 			insertNode(p, target, anchor);
 		},
 
-		u() {
-			detachNode(p);
-		},
-
-		d: noop
+		d(detach) {
+			if (detach) {
+				detachNode(p);
+			}
+		}
 	};
 }
 
@@ -172,11 +167,11 @@ function create_if_block_1(component, ctx) {
 			insertNode(p, target, anchor);
 		},
 
-		u() {
-			detachNode(p);
-		},
-
-		d: noop
+		d(detach) {
+			if (detach) {
+				detachNode(p);
+			}
+		}
 	};
 }
 
@@ -194,11 +189,11 @@ function create_if_block_2(component, ctx) {
 			insertNode(p, target, anchor);
 		},
 
-		u() {
-			detachNode(p);
-		},
-
-		d: noop
+		d(detach) {
+			if (detach) {
+				detachNode(p);
+			}
+		}
 	};
 }
 
@@ -216,11 +211,11 @@ function create_if_block_3(component, ctx) {
 			insertNode(p, target, anchor);
 		},
 
-		u() {
-			detachNode(p);
-		},
-
-		d: noop
+		d(detach) {
+			if (detach) {
+				detachNode(p);
+			}
+		}
 	};
 }
 
@@ -238,11 +233,11 @@ function create_if_block_4(component, ctx) {
 			insertNode(p, target, anchor);
 		},
 
-		u() {
-			detachNode(p);
-		},
-
-		d: noop
+		d(detach) {
+			if (detach) {
+				detachNode(p);
+			}
+		}
 	};
 }
 
diff --git a/test/js/samples/window-binding-scroll/expected-bundle.js b/test/js/samples/window-binding-scroll/expected-bundle.js
index 82f3eaf27a..a26fb90ce5 100644
--- a/test/js/samples/window-binding-scroll/expected-bundle.js
+++ b/test/js/samples/window-binding-scroll/expected-bundle.js
@@ -34,8 +34,7 @@ function destroy(detach) {
 	this.fire('destroy');
 	this.set = noop;
 
-	if (detach !== false) this._fragment.u();
-	this._fragment.d();
+	this._fragment.d(detach !== false);
 	this._fragment = null;
 	this._state = {};
 }
@@ -124,10 +123,6 @@ function _mount(target, anchor) {
 	this._fragment[this._fragment.i ? 'i' : 'm'](target, anchor || null);
 }
 
-function _unmount() {
-	if (this._fragment) this._fragment.u();
-}
-
 var proto = {
 	destroy,
 	get,
@@ -137,7 +132,6 @@ var proto = {
 	_recompute: noop,
 	_set,
 	_mount,
-	_unmount,
 	_differs
 };
 
@@ -185,12 +179,12 @@ function create_main_fragment(component, ctx) {
 			}
 		},
 
-		u() {
-			detachNode(p);
-		},
-
-		d() {
+		d(detach) {
 			window.removeEventListener("scroll", onwindowscroll);
+
+			if (detach) {
+				detachNode(p);
+			}
 		}
 	};
 }
diff --git a/test/js/samples/window-binding-scroll/expected.js b/test/js/samples/window-binding-scroll/expected.js
index 2416e70f94..ce8a8213b6 100644
--- a/test/js/samples/window-binding-scroll/expected.js
+++ b/test/js/samples/window-binding-scroll/expected.js
@@ -43,12 +43,12 @@ function create_main_fragment(component, ctx) {
 			}
 		},
 
-		u() {
-			detachNode(p);
-		},
-
-		d() {
+		d(detach) {
 			window.removeEventListener("scroll", onwindowscroll);
+
+			if (detach) {
+				detachNode(p);
+			}
 		}
 	};
 }
diff --git a/test/runtime/samples/await-then-catch-if/main.html b/test/runtime/samples/await-then-catch-if/main.html
index f9684c8257..bdeb5a7f5e 100644
--- a/test/runtime/samples/await-then-catch-if/main.html
+++ b/test/runtime/samples/await-then-catch-if/main.html
@@ -1,11 +1,11 @@
 {#if show}
-{#await thePromise}
-<p>loading...</p>
-{:then theValue}
-<p>the value is {theValue}</p>
-{:catch theError}
-<p>oh no! {theError.message}</p>
-{/await}
+	{#await thePromise}
+		<p>loading...</p>
+	{:then theValue}
+		<p>the value is {theValue}</p>
+	{:catch theError}
+		<p>oh no! {theError.message}</p>
+	{/await}
 {:else}
-<p>Else</p>
+	<p>Else</p>
 {/if}