From b1c67a16c607fdd3e2150122f58604d7a1f1dcbc Mon Sep 17 00:00:00 2001
From: Conduitry <git@chor.date>
Date: Wed, 9 Sep 2020 09:45:52 -0400
Subject: [PATCH 01/32] site: update to sapper@0.28.6

---
 site/package-lock.json | 13 +++----------
 site/package.json      |  2 +-
 2 files changed, 4 insertions(+), 11 deletions(-)

diff --git a/site/package-lock.json b/site/package-lock.json
index 8be99e589d..da6a8e809d 100644
--- a/site/package-lock.json
+++ b/site/package-lock.json
@@ -3518,12 +3518,6 @@
         "fsevents": "~2.1.2"
       }
     },
-    "rollup-dependency-tree": {
-      "version": "0.0.11",
-      "resolved": "https://registry.npmjs.org/rollup-dependency-tree/-/rollup-dependency-tree-0.0.11.tgz",
-      "integrity": "sha512-g+mY+9ayok0FKAzFxS9GxX6cSWOFNPYu8H37i32+dsz7tb1SYaGawzsBl1qfLBKaL2WjwowmZ72BhdybZDx79Q==",
-      "dev": true
-    },
     "rollup-plugin-svelte": {
       "version": "6.0.0",
       "resolved": "https://registry.npmjs.org/rollup-plugin-svelte/-/rollup-plugin-svelte-6.0.0.tgz",
@@ -3603,14 +3597,13 @@
       }
     },
     "sapper": {
-      "version": "0.28.5",
-      "resolved": "https://registry.npmjs.org/sapper/-/sapper-0.28.5.tgz",
-      "integrity": "sha512-pR+HZ3no95VoYfzMWv3nVZQY7vwJXF4C/vTnqMDuu7iVPm8X03pKHoXLRJZ1bREeey6Xteq7Et3RbPeXKfg5Fg==",
+      "version": "0.28.6",
+      "resolved": "https://registry.npmjs.org/sapper/-/sapper-0.28.6.tgz",
+      "integrity": "sha512-PLCZXBcXcL2ISBh+CqoUxcT0MwMnA8N71UDNhQig0Em5Z8vqg+g2jpKfYSnnyxqB5Plwc9LipN5ZJr42Vs4hXg==",
       "dev": true,
       "requires": {
         "html-minifier": "^4.0.0",
         "http-link-header": "^1.0.2",
-        "rollup-dependency-tree": "0.0.11",
         "shimport": "^1.0.1",
         "source-map": "^0.6.1",
         "sourcemap-codec": "^1.4.6",
diff --git a/site/package.json b/site/package.json
index 2cc2e454ef..f760cd871d 100644
--- a/site/package.json
+++ b/site/package.json
@@ -54,7 +54,7 @@
     "rollup": "^2.26.10",
     "rollup-plugin-svelte": "^6.0.0",
     "rollup-plugin-terser": "^7.0.0",
-    "sapper": "^0.28.5",
+    "sapper": "^0.28.6",
     "shelljs": "^0.8.3",
     "svelte": "^3.12.0"
   },

From 51e2626f42e00df15730152c2d0cedf06ace0f49 Mon Sep 17 00:00:00 2001
From: Tan Li Hau <tanhauhau@users.noreply.github.com>
Date: Fri, 11 Sep 2020 02:42:38 +0800
Subject: [PATCH 02/32] fix $$props reactivity in fallback of a slot (#5375)

---
 CHANGELOG.md                                   |  1 +
 .../render_dom/wrappers/shared/is_dynamic.ts   |  2 ++
 .../component-slot-fallback-6/Foo.svelte       |  1 +
 .../component-slot-fallback-6/Inner.svelte     |  9 +++++++++
 .../component-slot-fallback-6/_config.js       | 18 ++++++++++++++++++
 .../component-slot-fallback-6/main.svelte      |  8 ++++++++
 6 files changed, 39 insertions(+)
 create mode 100644 test/runtime/samples/component-slot-fallback-6/Foo.svelte
 create mode 100644 test/runtime/samples/component-slot-fallback-6/Inner.svelte
 create mode 100644 test/runtime/samples/component-slot-fallback-6/_config.js
 create mode 100644 test/runtime/samples/component-slot-fallback-6/main.svelte

diff --git a/CHANGELOG.md b/CHANGELOG.md
index 0ccfeff273..19e8cced8f 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -11,6 +11,7 @@
 * Fix using `<svelte:component>` in `{:catch}` ([#5259](https://github.com/sveltejs/svelte/issues/5259))
 * Fix setting one-way bound `<input>` `value` to `undefined` when it has spread attributes ([#5270](https://github.com/sveltejs/svelte/issues/5270))
 * Fix deep two-way bindings inside an `{#each}` involving a store ([#5286](https://github.com/sveltejs/svelte/issues/5286))
+* Fix reactivity of `$$props` in slot fallback content ([#5367](https://github.com/sveltejs/svelte/issues/5367))
 
 ## 3.24.1
 
diff --git a/src/compiler/compile/render_dom/wrappers/shared/is_dynamic.ts b/src/compiler/compile/render_dom/wrappers/shared/is_dynamic.ts
index d32ebe4594..aca2096154 100644
--- a/src/compiler/compile/render_dom/wrappers/shared/is_dynamic.ts
+++ b/src/compiler/compile/render_dom/wrappers/shared/is_dynamic.ts
@@ -1,9 +1,11 @@
 import { Var } from '../../../../interfaces';
+import { is_reserved_keyword } from '../../../utils/reserved_keywords';
 
 export default function is_dynamic(variable: Var) {
 	if (variable) {
 		if (variable.mutated || variable.reassigned) return true; // dynamic internal state
 		if (!variable.module && variable.writable && variable.export_name) return true; // writable props
+		if (is_reserved_keyword(variable.name)) return true;
 	}
 
 	return false;
diff --git a/test/runtime/samples/component-slot-fallback-6/Foo.svelte b/test/runtime/samples/component-slot-fallback-6/Foo.svelte
new file mode 100644
index 0000000000..0385342cef
--- /dev/null
+++ b/test/runtime/samples/component-slot-fallback-6/Foo.svelte
@@ -0,0 +1 @@
+<slot />
\ No newline at end of file
diff --git a/test/runtime/samples/component-slot-fallback-6/Inner.svelte b/test/runtime/samples/component-slot-fallback-6/Inner.svelte
new file mode 100644
index 0000000000..28f0fdd869
--- /dev/null
+++ b/test/runtime/samples/component-slot-fallback-6/Inner.svelte
@@ -0,0 +1,9 @@
+<script>
+	import Foo from './Foo.svelte';
+</script>
+
+<Foo>
+	<slot>
+		{JSON.stringify($$props)}
+	</slot>
+</Foo>
diff --git a/test/runtime/samples/component-slot-fallback-6/_config.js b/test/runtime/samples/component-slot-fallback-6/_config.js
new file mode 100644
index 0000000000..fb1a658f26
--- /dev/null
+++ b/test/runtime/samples/component-slot-fallback-6/_config.js
@@ -0,0 +1,18 @@
+// $$props reactivity in slot fallback
+export default {
+	html: `
+		<input>
+		{"value":""}
+	`,
+
+	async test({ assert, target, window }) {
+		const input = target.querySelector("input");
+		input.value = "abc";
+		await input.dispatchEvent(new window.Event('input'));
+
+		assert.htmlEqual(target.innerHTML, `
+			<input>
+			{"value":"abc"}
+		`);
+	}
+};
diff --git a/test/runtime/samples/component-slot-fallback-6/main.svelte b/test/runtime/samples/component-slot-fallback-6/main.svelte
new file mode 100644
index 0000000000..35abebef10
--- /dev/null
+++ b/test/runtime/samples/component-slot-fallback-6/main.svelte
@@ -0,0 +1,8 @@
+<script>
+	import Inner from "./Inner.svelte";
+	let value = '';
+</script>
+
+<input bind:value />
+
+<Inner {value} />

From 8a28d1bb382e75546ca8b53e5235113bf82f9ecd Mon Sep 17 00:00:00 2001
From: Tan Li Hau <tanhauhau@users.noreply.github.com>
Date: Fri, 11 Sep 2020 03:28:22 +0800
Subject: [PATCH 03/32] valid XHTML syntax in innerHTML for static elements
 (#5317)

---
 CHANGELOG.md                                  |  1 +
 .../render_dom/wrappers/Element/index.ts      |  6 ++-
 .../expected.js                               | 39 +++++++++++++++++++
 .../input.svelte                              |  3 ++
 4 files changed, 47 insertions(+), 2 deletions(-)
 create mode 100644 test/js/samples/valid-inner-html-for-static-element/expected.js
 create mode 100644 test/js/samples/valid-inner-html-for-static-element/input.svelte

diff --git a/CHANGELOG.md b/CHANGELOG.md
index 19e8cced8f..d3bd11c8b3 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -11,6 +11,7 @@
 * Fix using `<svelte:component>` in `{:catch}` ([#5259](https://github.com/sveltejs/svelte/issues/5259))
 * Fix setting one-way bound `<input>` `value` to `undefined` when it has spread attributes ([#5270](https://github.com/sveltejs/svelte/issues/5270))
 * Fix deep two-way bindings inside an `{#each}` involving a store ([#5286](https://github.com/sveltejs/svelte/issues/5286))
+* Use valid XHTML for elements that are optimised and inserted with `.innerHTML` ([#5315](https://github.com/sveltejs/svelte/issues/5315))
 * Fix reactivity of `$$props` in slot fallback content ([#5367](https://github.com/sveltejs/svelte/issues/5367))
 
 ## 3.24.1
diff --git a/src/compiler/compile/render_dom/wrappers/Element/index.ts b/src/compiler/compile/render_dom/wrappers/Element/index.ts
index b3533d2fa0..2e35f0271f 100644
--- a/src/compiler/compile/render_dom/wrappers/Element/index.ts
+++ b/src/compiler/compile/render_dom/wrappers/Element/index.ts
@@ -997,12 +997,14 @@ function to_html(wrappers: Array<ElementWrapper | TextWrapper | MustacheTagWrapp
 				state.quasi.value.raw += `"`;
 			});
 
-			state.quasi.value.raw += '>';
-
 			if (!wrapper.void) {
+				state.quasi.value.raw += '>';
+
 				to_html(wrapper.fragment.nodes as Array<ElementWrapper | TextWrapper>, block, literal, state);
 
 				state.quasi.value.raw += `</${wrapper.node.name}>`;
+			} else {
+				state.quasi.value.raw += '/>';
 			}
 		}
 	});
diff --git a/test/js/samples/valid-inner-html-for-static-element/expected.js b/test/js/samples/valid-inner-html-for-static-element/expected.js
new file mode 100644
index 0000000000..f1ced27ba4
--- /dev/null
+++ b/test/js/samples/valid-inner-html-for-static-element/expected.js
@@ -0,0 +1,39 @@
+/* generated by Svelte vX.Y.Z */
+import {
+	SvelteComponent,
+	detach,
+	element,
+	init,
+	insert,
+	noop,
+	safe_not_equal
+} from "svelte/internal";
+
+function create_fragment(ctx) {
+	let div;
+
+	return {
+		c() {
+			div = element("div");
+			div.innerHTML = `<img alt="Star" width="100" height="100" src="http://mdn.mozillademos.org/files/12676/star.svg"/>`;
+		},
+		m(target, anchor) {
+			insert(target, div, anchor);
+		},
+		p: noop,
+		i: noop,
+		o: noop,
+		d(detaching) {
+			if (detaching) detach(div);
+		}
+	};
+}
+
+class Component extends SvelteComponent {
+	constructor(options) {
+		super();
+		init(this, options, null, create_fragment, safe_not_equal, {});
+	}
+}
+
+export default Component;
\ No newline at end of file
diff --git a/test/js/samples/valid-inner-html-for-static-element/input.svelte b/test/js/samples/valid-inner-html-for-static-element/input.svelte
new file mode 100644
index 0000000000..3990b2a0c2
--- /dev/null
+++ b/test/js/samples/valid-inner-html-for-static-element/input.svelte
@@ -0,0 +1,3 @@
+<div>
+    <img alt="Star" width="100" height="100" src="http://mdn.mozillademos.org/files/12676/star.svg" />
+</div>
\ No newline at end of file

From 80e474a2442e109e5e2a39bf02bb11e6c6b7b029 Mon Sep 17 00:00:00 2001
From: Cam Jackson <camjackson89@gmail.com>
Date: Fri, 11 Sep 2020 05:28:59 +1000
Subject: [PATCH 04/32] site: Replace "active" with "selected" as an example
 class name (#5309)

---
 .../tutorial/13-classes/01-classes/app-a/App.svelte       | 8 ++++----
 .../tutorial/13-classes/01-classes/app-b/App.svelte       | 8 ++++----
 site/content/tutorial/13-classes/01-classes/text.md       | 6 +++---
 3 files changed, 11 insertions(+), 11 deletions(-)

diff --git a/site/content/tutorial/13-classes/01-classes/app-a/App.svelte b/site/content/tutorial/13-classes/01-classes/app-a/App.svelte
index 68cb642463..baa2543562 100644
--- a/site/content/tutorial/13-classes/01-classes/app-a/App.svelte
+++ b/site/content/tutorial/13-classes/01-classes/app-a/App.svelte
@@ -7,23 +7,23 @@
 		display: block;
 	}
 
-	.active {
+	.selected {
 		background-color: #ff3e00;
 		color: white;
 	}
 </style>
 
 <button
-	class="{current === 'foo' ? 'active' : ''}"
+	class="{current === 'foo' ? 'selected' : ''}"
 	on:click="{() => current = 'foo'}"
 >foo</button>
 
 <button
-	class="{current === 'bar' ? 'active' : ''}"
+	class="{current === 'bar' ? 'selected' : ''}"
 	on:click="{() => current = 'bar'}"
 >bar</button>
 
 <button
-	class="{current === 'baz' ? 'active' : ''}"
+	class="{current === 'baz' ? 'selected' : ''}"
 	on:click="{() => current = 'baz'}"
 >baz</button>
\ No newline at end of file
diff --git a/site/content/tutorial/13-classes/01-classes/app-b/App.svelte b/site/content/tutorial/13-classes/01-classes/app-b/App.svelte
index 4da386991d..a8861ad537 100644
--- a/site/content/tutorial/13-classes/01-classes/app-b/App.svelte
+++ b/site/content/tutorial/13-classes/01-classes/app-b/App.svelte
@@ -7,23 +7,23 @@
 		display: block;
 	}
 
-	.active {
+	.selected {
 		background-color: #ff3e00;
 		color: white;
 	}
 </style>
 
 <button
-	class:active="{current === 'foo'}"
+	class:selected="{current === 'foo'}"
 	on:click="{() => current = 'foo'}"
 >foo</button>
 
 <button
-	class:active="{current === 'bar'}"
+	class:selected="{current === 'bar'}"
 	on:click="{() => current = 'bar'}"
 >bar</button>
 
 <button
-	class:active="{current === 'baz'}"
+	class:selected="{current === 'baz'}"
 	on:click="{() => current = 'baz'}"
 >baz</button>
\ No newline at end of file
diff --git a/site/content/tutorial/13-classes/01-classes/text.md b/site/content/tutorial/13-classes/01-classes/text.md
index 7ad3045399..6e5b3b3c0d 100644
--- a/site/content/tutorial/13-classes/01-classes/text.md
+++ b/site/content/tutorial/13-classes/01-classes/text.md
@@ -6,7 +6,7 @@ Like any other attribute, you can specify classes with a JavaScript attribute, s
 
 ```html
 <button
-	class="{current === 'foo' ? 'active' : ''}"
+	class="{current === 'foo' ? 'selected' : ''}"
 	on:click="{() => current = 'foo'}"
 >foo</button>
 ```
@@ -15,9 +15,9 @@ This is such a common pattern in UI development that Svelte includes a special d
 
 ```html
 <button
-	class:active="{current === 'foo'}"
+	class:selected="{current === 'foo'}"
 	on:click="{() => current = 'foo'}"
 >foo</button>
 ```
 
-The `active` class is added to the element whenever the value of the expression is truthy, and removed when it's falsy.
\ No newline at end of file
+The `selected` class is added to the element whenever the value of the expression is truthy, and removed when it's falsy.

From ae971f80ae11659c8885748a5aeaac82eb5ec17b Mon Sep 17 00:00:00 2001
From: Eugene Hwang <eugenehwang@hey.com>
Date: Thu, 10 Sep 2020 15:31:28 -0400
Subject: [PATCH 05/32] docs: adjust explanations of `$$props` and
 `$$restProps` (#5368)

---
 site/content/docs/02-template-syntax.md | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/site/content/docs/02-template-syntax.md b/site/content/docs/02-template-syntax.md
index cfc7d7ba7a..e93449728b 100644
--- a/site/content/docs/02-template-syntax.md
+++ b/site/content/docs/02-template-syntax.md
@@ -107,7 +107,7 @@ An element or component can have multiple spread attributes, interspersed with r
 
 ---
 
-*`$$props`* references all props that are passed to a component – including ones that are not declared with `export`. It is useful in rare cases, but not generally recommended, as it is difficult for Svelte to optimise.
+*`$$props`* references all props that are passed to a component, including ones that are not declared with `export`. It is not generally recommended, as it is difficult for Svelte to optimise. But it can be useful in rare cases – for example, when you don't know at compile time what props might be passed to a component.
 
 ```sv
 <Widget {...$$props}/>
@@ -115,7 +115,7 @@ An element or component can have multiple spread attributes, interspersed with r
 
 ---
 
-*`$$restProps`* contains only the props which are *not* declared with `export`. It can be used to pass down other unknown attributes to an element in a component.
+*`$$restProps`* contains only the props which are *not* declared with `export`. It can be used to pass down other unknown attributes to an element in a component. It shares the same optimisation problems as *`$$props`*, and is likewise not recommended.
 
 ```html
 <input {...$$restProps}>

From 211fc92e69b7eb02b2e7f0d67e6569c8fcbfcb52 Mon Sep 17 00:00:00 2001
From: rdb <rdb@users.noreply.github.com>
Date: Thu, 10 Sep 2020 21:39:45 +0200
Subject: [PATCH 06/32] Fix current component not being cleared after component
 update (#4909)

---
 src/runtime/internal/scheduler.ts                |  1 +
 .../onmount-get-current-component/_config.js     |  4 ++++
 .../onmount-get-current-component/main.svelte    | 16 ++++++++++++++++
 3 files changed, 21 insertions(+)
 create mode 100644 test/runtime/samples/onmount-get-current-component/_config.js
 create mode 100644 test/runtime/samples/onmount-get-current-component/main.svelte

diff --git a/src/runtime/internal/scheduler.ts b/src/runtime/internal/scheduler.ts
index b0db71035a..568739e4f8 100644
--- a/src/runtime/internal/scheduler.ts
+++ b/src/runtime/internal/scheduler.ts
@@ -45,6 +45,7 @@ export function flush() {
 			set_current_component(component);
 			update(component.$$);
 		}
+		set_current_component(null);
 
 		dirty_components.length = 0;
 
diff --git a/test/runtime/samples/onmount-get-current-component/_config.js b/test/runtime/samples/onmount-get-current-component/_config.js
new file mode 100644
index 0000000000..727f8a2d8e
--- /dev/null
+++ b/test/runtime/samples/onmount-get-current-component/_config.js
@@ -0,0 +1,4 @@
+export default {
+	skip_if_ssr: true,
+	html: `1`,
+};
diff --git a/test/runtime/samples/onmount-get-current-component/main.svelte b/test/runtime/samples/onmount-get-current-component/main.svelte
new file mode 100644
index 0000000000..de64bc65fa
--- /dev/null
+++ b/test/runtime/samples/onmount-get-current-component/main.svelte
@@ -0,0 +1,16 @@
+<script>
+	import { onMount } from 'svelte';
+	import { get_current_component } from 'svelte/internal';
+
+	let gotException = 0;
+
+	onMount(() => {
+		try {
+			get_current_component();
+		} catch (error) {
+			gotException++;
+		}
+	});
+</script>
+
+{gotException}

From b7710b93bcc186d27b2a5dad82524d9cd311b052 Mon Sep 17 00:00:00 2001
From: Conduitry <git@chor.date>
Date: Thu, 10 Sep 2020 15:39:59 -0400
Subject: [PATCH 07/32] update changelog

---
 CHANGELOG.md | 1 +
 1 file changed, 1 insertion(+)

diff --git a/CHANGELOG.md b/CHANGELOG.md
index d3bd11c8b3..3227ac382c 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -3,6 +3,7 @@
 ## Unreleased
 
 * Expose object of which slots have received content in `$$slots` ([#2106](https://github.com/sveltejs/svelte/issues/2106))
+* Correctly disallow using lifecycle hooks after synchronous component initialisation ([#4259](https://github.com/sveltejs/svelte/issues/4259), [#4899](https://github.com/sveltejs/svelte/issues/4899))
 * Re-throw an unhandled rejection when an `{#await}` block with no `{:catch}` gets a rejection ([#5129](https://github.com/sveltejs/svelte/issues/5129))
 * Add types to `createEventDispatcher` ([#5211](https://github.com/sveltejs/svelte/issues/5211))
 * In SSR mode, do not automatically declare variables for reactive assignments to member expressions ([#5247](https://github.com/sveltejs/svelte/issues/5247))

From c96673bcead31758104bb605d42b7edc50a1aee1 Mon Sep 17 00:00:00 2001
From: milahu <milahu@gmail.com>
Date: Thu, 10 Sep 2020 21:41:42 +0200
Subject: [PATCH 08/32] Upgrade to mocha 7 and migrate to mocharc (#5357)

Co-authored-by: Ben McCann <322311+benmccann@users.noreply.github.com>
---
 .mocharc.coverage.js |  10 +
 .mocharc.js          |   5 +
 mocha.coverage.opts  |   4 -
 mocha.opts           |   1 -
 package-lock.json    | 478 ++++++++++++++++++-------------------------
 package.json         |  10 +-
 6 files changed, 216 insertions(+), 292 deletions(-)
 create mode 100644 .mocharc.coverage.js
 create mode 100644 .mocharc.js
 delete mode 100644 mocha.coverage.opts
 delete mode 100644 mocha.opts

diff --git a/.mocharc.coverage.js b/.mocharc.coverage.js
new file mode 100644
index 0000000000..91c93518ca
--- /dev/null
+++ b/.mocharc.coverage.js
@@ -0,0 +1,10 @@
+module.exports = Object.assign(
+	{},
+	require('./mocharc.js'),
+	{
+		fullTrace: true,
+		require: [
+			'source-map-support/register'
+		]
+	}
+);
diff --git a/.mocharc.js b/.mocharc.js
new file mode 100644
index 0000000000..6159fd937f
--- /dev/null
+++ b/.mocharc.js
@@ -0,0 +1,5 @@
+module.exports = {
+	file: [
+		'test/test.js'
+	]
+};
diff --git a/mocha.coverage.opts b/mocha.coverage.opts
deleted file mode 100644
index cfec67a99a..0000000000
--- a/mocha.coverage.opts
+++ /dev/null
@@ -1,4 +0,0 @@
---require source-map-support/register
---full-trace
---recursive
-test/test.js
diff --git a/mocha.opts b/mocha.opts
deleted file mode 100644
index 427b029758..0000000000
--- a/mocha.opts
+++ /dev/null
@@ -1 +0,0 @@
-test/test.js
\ No newline at end of file
diff --git a/package-lock.json b/package-lock.json
index 4e9e06824a..d3012bbf70 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -197,9 +197,9 @@
       "dev": true
     },
     "@types/mocha": {
-      "version": "5.2.7",
-      "resolved": "https://registry.npmjs.org/@types/mocha/-/mocha-5.2.7.tgz",
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-            "os-locale": "^3.1.0",
             "require-directory": "^2.1.1",
             "require-main-filename": "^2.0.0",
             "set-blocking": "^2.0.0",
             "string-width": "^3.0.0",
             "which-module": "^2.0.0",
             "y18n": "^4.0.0",
-            "yargs-parser": "^13.0.0"
+            "yargs-parser": "^13.1.2"
           }
         },
         "yargs-parser": {
-          "version": "13.0.0",
-          "resolved": "https://registry.npmjs.org/yargs-parser/-/yargs-parser-13.0.0.tgz",
-          "integrity": "sha512-w2LXjoL8oRdRQN+hOyppuXs+V/fVAYtpcrRxZuF7Kt/Oc+Jr2uAcVntaUTNT6w5ihoWfFDpNY8CPx1QskxZ/pw==",
+          "version": "13.1.2",
+          "resolved": "https://registry.npmjs.org/yargs-parser/-/yargs-parser-13.1.2.tgz",
+          "integrity": "sha512-3lbsNRf/j+A4QuSZfDRA7HRSfWrzO0YjqTJd5kjAq37Zep1CEgaYmrH9Q3GwPiB9cHyd1Y1UwggGhJGoxipbzg==",
           "dev": true,
           "requires": {
             "camelcase": "^5.0.0",
@@ -2894,9 +2881,9 @@
       "dev": true
     },
     "node-environment-flags": {
-      "version": "1.0.5",
-      "resolved": "https://registry.npmjs.org/node-environment-flags/-/node-environment-flags-1.0.5.tgz",
-      "integrity": "sha512-VNYPRfGfmZLx0Ye20jWzHUjyTW/c+6Wq+iLhDzUI4XmhrDd9l/FozXV3F2xOaXjvp0co0+v1YSR3CMP6g+VvLQ==",
+      "version": "1.0.6",
+      "resolved": "https://registry.npmjs.org/node-environment-flags/-/node-environment-flags-1.0.6.tgz",
+      "integrity": "sha512-5Evy2epuL+6TM0lCQGpFIj6KwiEsGh1SrHUhTbNX+sLbBtjidPZFAnVK9y5yU1+h//RitLbRHTIMyxQPtxMdHw==",
       "dev": true,
       "requires": {
         "object.getownpropertydescriptors": "^2.0.3",
@@ -2904,9 +2891,9 @@
       },
       "dependencies": {
         "semver": {
-          "version": "5.7.0",
-          "resolved": "https://registry.npmjs.org/semver/-/semver-5.7.0.tgz",
-          "integrity": "sha512-Ya52jSX2u7QKghxeoFGpLwCtGlt7j0oY9DYb5apt9nPlJ42ID+ulTXESnt/qAQcoSERyZ5sl3LDIOw0nAn/5DA==",
+          "version": "5.7.1",
+          "resolved": "https://registry.npmjs.org/semver/-/semver-5.7.1.tgz",
+          "integrity": "sha512-sauaDf/PZdVgrLTNYHRtpXa1iRiKcaebiKQ1BJdpQlWH2lCvexQdX55snPFyK7QzpudqbCI0qXFfOasHdyNDGQ==",
           "dev": true
         }
       }
@@ -2935,6 +2922,12 @@
         "validate-npm-package-license": "^3.0.1"
       }
     },
+    "normalize-path": {
+      "version": "3.0.0",
+      "resolved": "https://registry.npmjs.org/normalize-path/-/normalize-path-3.0.0.tgz",
+      "integrity": "sha512-6eZs5Ls3WtCisHWp9S2GUy8dqkpGi4BVSz3GaqiE6ezub0512ESztXUwUB6C6IKbQkY2Pnb/mD4WYojCRwcwLA==",
+      "dev": true
+    },
     "npm-run-path": {
       "version": "2.0.2",
       "resolved": "https://registry.npmjs.org/npm-run-path/-/npm-run-path-2.0.2.tgz",
@@ -2944,12 +2937,6 @@
         "path-key": "^2.0.0"
       }
     },
-    "number-is-nan": {
-      "version": "1.0.1",
-      "resolved": "https://registry.npmjs.org/number-is-nan/-/number-is-nan-1.0.1.tgz",
-      "integrity": "sha1-CXtgK1NCKlIsGvuHkDGDNpQaAR0=",
-      "dev": true
-    },
     "nwsapi": {
       "version": "2.1.4",
       "resolved": "https://registry.npmjs.org/nwsapi/-/nwsapi-2.1.4.tgz",
@@ -2993,13 +2980,13 @@
       }
     },
     "object.getownpropertydescriptors": {
-      "version": "2.0.3",
-      "resolved": "https://registry.npmjs.org/object.getownpropertydescriptors/-/object.getownpropertydescriptors-2.0.3.tgz",
-      "integrity": "sha1-h1jIRvW0B62rDyNuCYbxSwUcqhY=",
+      "version": "2.1.0",
+      "resolved": "https://registry.npmjs.org/object.getownpropertydescriptors/-/object.getownpropertydescriptors-2.1.0.tgz",
+      "integrity": "sha512-Z53Oah9A3TdLoblT7VKJaTDdXdT+lQO+cNpKVnya5JDe9uLvzu1YyY1yFDFrcxrlRgWrEFH0jJtD/IbuwjcEVg==",
       "dev": true,
       "requires": {
-        "define-properties": "^1.1.2",
-        "es-abstract": "^1.5.1"
+        "define-properties": "^1.1.3",
+        "es-abstract": "^1.17.0-next.1"
       }
     },
     "object.values": {
@@ -3253,6 +3240,12 @@
         "is-reference": "^1.1.4"
       }
     },
+    "picomatch": {
+      "version": "2.2.2",
+      "resolved": "https://registry.npmjs.org/picomatch/-/picomatch-2.2.2.tgz",
+      "integrity": "sha512-q0M/9eZHzmr0AulXyPwNfZjtwZ/RBZlbN3K3CErVrk50T2ASYI7Bye0EvekFY3IP1Nt2DHu0re+V2ZHIpMkuWg==",
+      "dev": true
+    },
     "pify": {
       "version": "4.0.1",
       "resolved": "https://registry.npmjs.org/pify/-/pify-4.0.1.tgz",
@@ -3466,6 +3459,15 @@
         "util-deprecate": "~1.0.1"
       }
     },
+    "readdirp": {
+      "version": "3.2.0",
+      "resolved": "https://registry.npmjs.org/readdirp/-/readdirp-3.2.0.tgz",
+      "integrity": "sha512-crk4Qu3pmXwgxdSgGhgA/eXiJAPQiX4GMOZZMXnqKxHX7TaoL+3gQVo/WeuAiogr07DpnfjIMpXXa+PAIvwPGQ==",
+      "dev": true,
+      "requires": {
+        "picomatch": "^2.0.4"
+      }
+    },
     "regexpp": {
       "version": "3.1.0",
       "resolved": "https://registry.npmjs.org/regexpp/-/regexpp-3.1.0.tgz",
@@ -4257,6 +4259,15 @@
         "os-tmpdir": "~1.0.2"
       }
     },
+    "to-regex-range": {
+      "version": "5.0.1",
+      "resolved": "https://registry.npmjs.org/to-regex-range/-/to-regex-range-5.0.1.tgz",
+      "integrity": "sha512-65P7iz6X5yEr1cwcgvQxbbIw7Uk3gOy5dIdtZ4rDveLqhrdJP+Li/Hx6tyK0NEb+2GCyneCMJiGqrADCSNk8sQ==",
+      "dev": true,
+      "requires": {
+        "is-number": "^7.0.0"
+      }
+    },
     "tough-cookie": {
       "version": "3.0.1",
       "resolved": "https://registry.npmjs.org/tough-cookie/-/tough-cookie-3.0.1.tgz",
@@ -4616,135 +4627,38 @@
       }
     },
     "yargs-unparser": {
-      "version": "1.5.0",
-      "resolved": "https://registry.npmjs.org/yargs-unparser/-/yargs-unparser-1.5.0.tgz",
-      "integrity": "sha512-HK25qidFTCVuj/D1VfNiEndpLIeJN78aqgR23nL3y4N0U/91cOAzqfHlF8n2BvoNDcZmJKin3ddNSvOxSr8flw==",
+      "version": "1.6.0",
+      "resolved": "https://registry.npmjs.org/yargs-unparser/-/yargs-unparser-1.6.0.tgz",
+      "integrity": "sha512-W9tKgmSn0DpSatfri0nx52Joq5hVXgeLiqR/5G0sZNDoLZFOr/xjBUDcShCOGNsBnEMNo1KAMBkTej1Hm62HTw==",
       "dev": true,
       "requires": {
         "flat": "^4.1.0",
-        "lodash": "^4.17.11",
-        "yargs": "^12.0.5"
+        "lodash": "^4.17.15",
+        "yargs": "^13.3.0"
       },
       "dependencies": {
-        "ansi-regex": {
-          "version": "3.0.0",
-          "resolved": "https://registry.npmjs.org/ansi-regex/-/ansi-regex-3.0.0.tgz",
-          "integrity": "sha1-7QMXwyIGT3lGbAKWa922Bas32Zg=",
-          "dev": true
-        },
-        "cliui": {
-          "version": "4.1.0",
-          "resolved": "https://registry.npmjs.org/cliui/-/cliui-4.1.0.tgz",
-          "integrity": "sha512-4FG+RSG9DL7uEwRUZXZn3SS34DiDPfzP0VOiEwtUWlE+AR2EIg+hSyvrIgUUfhdgR/UkAeW2QHgeP+hWrXs7jQ==",
-          "dev": true,
-          "requires": {
-            "string-width": "^2.1.1",
-            "strip-ansi": "^4.0.0",
-            "wrap-ansi": "^2.0.0"
-          }
-        },
-        "get-caller-file": {
-          "version": "1.0.3",
-          "resolved": "https://registry.npmjs.org/get-caller-file/-/get-caller-file-1.0.3.tgz",
-          "integrity": "sha512-3t6rVToeoZfYSGd8YoLFR2DJkiQrIiUrGcjvFX2mDw3bn6k2OtwHN0TNCLbBO+w8qTvimhDkv+LSscbJY1vE6w==",
-          "dev": true
-        },
-        "require-main-filename": {
-          "version": "1.0.1",
-          "resolved": "https://registry.npmjs.org/require-main-filename/-/require-main-filename-1.0.1.tgz",
-          "integrity": "sha1-l/cXtp1IeE9fUmpsWqj/3aBVpNE=",
-          "dev": true
-        },
-        "string-width": {
-          "version": "2.1.1",
-          "resolved": "https://registry.npmjs.org/string-width/-/string-width-2.1.1.tgz",
-          "integrity": "sha512-nOqH59deCq9SRHlxq1Aw85Jnt4w6KvLKqWVik6oA9ZklXLNIOlqg4F2yrT1MVaTjAqvVwdfeZ7w7aCvJD7ugkw==",
-          "dev": true,
-          "requires": {
-            "is-fullwidth-code-point": "^2.0.0",
-            "strip-ansi": "^4.0.0"
-          }
-        },
-        "strip-ansi": {
-          "version": "4.0.0",
-          "resolved": "https://registry.npmjs.org/strip-ansi/-/strip-ansi-4.0.0.tgz",
-          "integrity": "sha1-qEeQIusaw2iocTibY1JixQXuNo8=",
-          "dev": true,
-          "requires": {
-            "ansi-regex": "^3.0.0"
-          }
-        },
-        "wrap-ansi": {
-          "version": "2.1.0",
-          "resolved": "https://registry.npmjs.org/wrap-ansi/-/wrap-ansi-2.1.0.tgz",
-          "integrity": "sha1-2Pw9KE3QV5T+hJc8rs3Rz4JP3YU=",
-          "dev": true,
-          "requires": {
-            "string-width": "^1.0.1",
-            "strip-ansi": "^3.0.1"
-          },
-          "dependencies": {
-            "ansi-regex": {
-              "version": "2.1.1",
-              "resolved": "https://registry.npmjs.org/ansi-regex/-/ansi-regex-2.1.1.tgz",
-              "integrity": "sha1-w7M6te42DYbg5ijwRorn7yfWVN8=",
-              "dev": true
-            },
-            "is-fullwidth-code-point": {
-              "version": "1.0.0",
-              "resolved": "https://registry.npmjs.org/is-fullwidth-code-point/-/is-fullwidth-code-point-1.0.0.tgz",
-              "integrity": "sha1-754xOG8DGn8NZDr4L95QxFfvAMs=",
-              "dev": true,
-              "requires": {
-                "number-is-nan": "^1.0.0"
-              }
-            },
-            "string-width": {
-              "version": "1.0.2",
-              "resolved": "https://registry.npmjs.org/string-width/-/string-width-1.0.2.tgz",
-              "integrity": "sha1-EYvfW4zcUaKn5w0hHgfisLmxB9M=",
-              "dev": true,
-              "requires": {
-                "code-point-at": "^1.0.0",
-                "is-fullwidth-code-point": "^1.0.0",
-                "strip-ansi": "^3.0.0"
-              }
-            },
-            "strip-ansi": {
-              "version": "3.0.1",
-              "resolved": "https://registry.npmjs.org/strip-ansi/-/strip-ansi-3.0.1.tgz",
-              "integrity": "sha1-ajhfuIU9lS1f8F0Oiq+UJ43GPc8=",
-              "dev": true,
-              "requires": {
-                "ansi-regex": "^2.0.0"
-              }
-            }
-          }
-        },
         "yargs": {
-          "version": "12.0.5",
-          "resolved": "https://registry.npmjs.org/yargs/-/yargs-12.0.5.tgz",
-          "integrity": "sha512-Lhz8TLaYnxq/2ObqHDql8dX8CJi97oHxrjUcYtzKbbykPtVW9WB+poxI+NM2UIzsMgNCZTIf0AQwsjK5yMAqZw==",
+          "version": "13.3.2",
+          "resolved": "https://registry.npmjs.org/yargs/-/yargs-13.3.2.tgz",
+          "integrity": "sha512-AX3Zw5iPruN5ie6xGRIDgqkT+ZhnRlZMLMHAs8tg7nRruy2Nb+i5o9bwghAogtM08q1dpr2LVoS8KSTMYpWXUw==",
           "dev": true,
           "requires": {
-            "cliui": "^4.0.0",
-            "decamelize": "^1.2.0",
+            "cliui": "^5.0.0",
             "find-up": "^3.0.0",
-            "get-caller-file": "^1.0.1",
-            "os-locale": "^3.0.0",
+            "get-caller-file": "^2.0.1",
             "require-directory": "^2.1.1",
-            "require-main-filename": "^1.0.1",
+            "require-main-filename": "^2.0.0",
             "set-blocking": "^2.0.0",
-            "string-width": "^2.0.0",
+            "string-width": "^3.0.0",
             "which-module": "^2.0.0",
-            "y18n": "^3.2.1 || ^4.0.0",
-            "yargs-parser": "^11.1.1"
+            "y18n": "^4.0.0",
+            "yargs-parser": "^13.1.2"
           }
         },
         "yargs-parser": {
-          "version": "11.1.1",
-          "resolved": "https://registry.npmjs.org/yargs-parser/-/yargs-parser-11.1.1.tgz",
-          "integrity": "sha512-C6kB/WJDiaxONLJQnF8ccx9SEeoTTLek8RVbaOIsrAUS8VrBEXfmeSnCZxygc+XC2sNMBIwOOnfcxiynjHsVSQ==",
+          "version": "13.1.2",
+          "resolved": "https://registry.npmjs.org/yargs-parser/-/yargs-parser-13.1.2.tgz",
+          "integrity": "sha512-3lbsNRf/j+A4QuSZfDRA7HRSfWrzO0YjqTJd5kjAq37Zep1CEgaYmrH9Q3GwPiB9cHyd1Y1UwggGhJGoxipbzg==",
           "dev": true,
           "requires": {
             "camelcase": "^5.0.0",
diff --git a/package.json b/package.json
index 36453769e6..021b11ff16 100644
--- a/package.json
+++ b/package.json
@@ -23,10 +23,10 @@
   },
   "types": "types/runtime/index.d.ts",
   "scripts": {
-    "test": "mocha --opts mocha.opts",
+    "test": "mocha --config .mocharc.js",
     "test:unit": "mocha --require sucrase/register --recursive src/**/__test__.ts",
-    "quicktest": "mocha --opts mocha.opts",
-    "precoverage": "c8 mocha --opts mocha.coverage.opts",
+    "quicktest": "mocha --config .mocharc.js",
+    "precoverage": "c8 mocha --config .mocharc.coverage.js",
     "coverage": "c8 report --reporter=text-lcov > coverage.lcov && c8 report --reporter=html",
     "codecov": "codecov",
     "precodecov": "npm run coverage",
@@ -64,7 +64,7 @@
     "@rollup/plugin-typescript": "^2.0.1",
     "@rollup/plugin-virtual": "^2.0.0",
     "@sveltejs/eslint-config": "github:sveltejs/eslint-config#v5.0.0",
-    "@types/mocha": "^5.2.7",
+    "@types/mocha": "^7.0.0",
     "@types/node": "^8.10.53",
     "@typescript-eslint/eslint-plugin": "^3.0.2",
     "@typescript-eslint/parser": "^3.0.2",
@@ -83,7 +83,7 @@
     "kleur": "^3.0.3",
     "locate-character": "^2.0.5",
     "magic-string": "^0.25.3",
-    "mocha": "^6.2.0",
+    "mocha": "^7.0.0",
     "periscopic": "^2.0.1",
     "puppeteer": "^2.1.1",
     "rollup": "^1.27.14",

From 6ecc288d94e02c89d21c10cff852b82a9ab34f51 Mon Sep 17 00:00:00 2001
From: "dependabot[bot]" <49699333+dependabot[bot]@users.noreply.github.com>
Date: Thu, 10 Sep 2020 12:42:20 -0700
Subject: [PATCH 09/32] Bump node-fetch from 2.6.0 to 2.6.1 (#5376)

Bumps [node-fetch](https://github.com/bitinn/node-fetch) from 2.6.0 to 2.6.1.
- [Release notes](https://github.com/bitinn/node-fetch/releases)
- [Changelog](https://github.com/node-fetch/node-fetch/blob/master/docs/CHANGELOG.md)
- [Commits](https://github.com/bitinn/node-fetch/compare/v2.6.0...v2.6.1)

Signed-off-by: dependabot[bot] <support@github.com>

Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>
---
 package-lock.json | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/package-lock.json b/package-lock.json
index d3012bbf70..a19de0dba3 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -2899,9 +2899,9 @@
       }
     },
     "node-fetch": {
-      "version": "2.6.0",
-      "resolved": "https://registry.npmjs.org/node-fetch/-/node-fetch-2.6.0.tgz",
-      "integrity": "sha512-8dG4H5ujfvFiqDmVu9fQ5bOHUC15JMjMY/Zumv26oOvvVJjM67KF8koCWIabKQ1GJIa9r2mMZscBq/TbdOcmNA==",
+      "version": "2.6.1",
+      "resolved": "https://registry.npmjs.org/node-fetch/-/node-fetch-2.6.1.tgz",
+      "integrity": "sha512-V4aYg89jEoVRxRb2fJdAg8FHvI7cEyYdVAh94HH0UIK8oJxUfkjlDQN9RbMx+bEjP7+ggMiFRprSti032Oipxw==",
       "dev": true
     },
     "node-modules-regexp": {

From d201c5bfb3388259ffc3bb7f5cb717aa43293015 Mon Sep 17 00:00:00 2001
From: "dependabot[bot]" <49699333+dependabot[bot]@users.noreply.github.com>
Date: Thu, 10 Sep 2020 12:42:32 -0700
Subject: [PATCH 10/32] Bump node-fetch from 2.6.0 to 2.6.1 in /site (#5377)

Bumps [node-fetch](https://github.com/bitinn/node-fetch) from 2.6.0 to 2.6.1.
- [Release notes](https://github.com/bitinn/node-fetch/releases)
- [Changelog](https://github.com/node-fetch/node-fetch/blob/master/docs/CHANGELOG.md)
- [Commits](https://github.com/bitinn/node-fetch/compare/v2.6.0...v2.6.1)

Signed-off-by: dependabot[bot] <support@github.com>

Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>
---
 site/package-lock.json | 6 +++---
 site/package.json      | 2 +-
 2 files changed, 4 insertions(+), 4 deletions(-)

diff --git a/site/package-lock.json b/site/package-lock.json
index da6a8e809d..014535652a 100644
--- a/site/package-lock.json
+++ b/site/package-lock.json
@@ -2857,9 +2857,9 @@
       }
     },
     "node-fetch": {
-      "version": "2.6.0",
-      "resolved": "https://registry.npmjs.org/node-fetch/-/node-fetch-2.6.0.tgz",
-      "integrity": "sha512-8dG4H5ujfvFiqDmVu9fQ5bOHUC15JMjMY/Zumv26oOvvVJjM67KF8koCWIabKQ1GJIa9r2mMZscBq/TbdOcmNA==",
+      "version": "2.6.1",
+      "resolved": "https://registry.npmjs.org/node-fetch/-/node-fetch-2.6.1.tgz",
+      "integrity": "sha512-V4aYg89jEoVRxRb2fJdAg8FHvI7cEyYdVAh94HH0UIK8oJxUfkjlDQN9RbMx+bEjP7+ggMiFRprSti032Oipxw==",
       "dev": true
     },
     "node-pg-migrate": {
diff --git a/site/package.json b/site/package.json
index f760cd871d..b8b08c65e8 100644
--- a/site/package.json
+++ b/site/package.json
@@ -48,7 +48,7 @@
     "esm": "^3.2.25",
     "jimp": "^0.8.0",
     "mocha": "^6.2.0",
-    "node-fetch": "^2.6.0",
+    "node-fetch": "^2.6.1",
     "node-pg-migrate": "^3.22.0",
     "npm-run-all": "^4.1.5",
     "rollup": "^2.26.10",

From 4b59491ea4db972e45b7eff679e73db5857c0006 Mon Sep 17 00:00:00 2001
From: Th0rN13 <th0r@inbox.ru>
Date: Fri, 11 Sep 2020 00:49:57 +0500
Subject: [PATCH 11/32] Fix: input type number warning in browsers (#4772)

---
 src/runtime/internal/dom.ts                          | 2 +-
 test/runtime/samples/binding-input-number/_config.js | 6 +++---
 2 files changed, 4 insertions(+), 4 deletions(-)

diff --git a/src/runtime/internal/dom.ts b/src/runtime/internal/dom.ts
index 7087336a6b..cc1996abdf 100644
--- a/src/runtime/internal/dom.ts
+++ b/src/runtime/internal/dom.ts
@@ -138,7 +138,7 @@ export function get_binding_group_value(group, __value, checked) {
 }
 
 export function to_number(value) {
-	return value === '' ? undefined : +value;
+	return value === '' ? null : +value;
 }
 
 export function time_ranges_to_array(ranges) {
diff --git a/test/runtime/samples/binding-input-number/_config.js b/test/runtime/samples/binding-input-number/_config.js
index 3c5919bc64..1a56a75c0c 100644
--- a/test/runtime/samples/binding-input-number/_config.js
+++ b/test/runtime/samples/binding-input-number/_config.js
@@ -35,14 +35,14 @@ export default {
 			<p>number 44</p>
 		`);
 
-		// empty string should be treated as undefined
+		// empty string should be treated as null
 		input.value = '';
 		await input.dispatchEvent(event);
 
-		assert.equal(component.count, undefined);
+		assert.equal(component.count, null);
 		assert.htmlEqual(target.innerHTML, `
 			<input type='number'>
-			<p>undefined undefined</p>
+			<p>object null</p>
 		`);
 	}
 };

From daa1c390d5b24cfe381f72ad1552963da19935d0 Mon Sep 17 00:00:00 2001
From: Conduitry <git@chor.date>
Date: Thu, 10 Sep 2020 15:52:25 -0400
Subject: [PATCH 12/32] update changelog

---
 CHANGELOG.md | 1 +
 1 file changed, 1 insertion(+)

diff --git a/CHANGELOG.md b/CHANGELOG.md
index 3227ac382c..63fafd21df 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -2,6 +2,7 @@
 
 ## Unreleased
 
+* Use `null` rather than `undefined` for coerced bound value of `<input type="number">` ([#1701](https://github.com/sveltejs/svelte/issues/1701))
 * Expose object of which slots have received content in `$$slots` ([#2106](https://github.com/sveltejs/svelte/issues/2106))
 * Correctly disallow using lifecycle hooks after synchronous component initialisation ([#4259](https://github.com/sveltejs/svelte/issues/4259), [#4899](https://github.com/sveltejs/svelte/issues/4899))
 * Re-throw an unhandled rejection when an `{#await}` block with no `{:catch}` gets a rejection ([#5129](https://github.com/sveltejs/svelte/issues/5129))

From dfb15a6a37ef7bd48e18a69d3b4dcad8690b32a4 Mon Sep 17 00:00:00 2001
From: Conduitry <git@chor.date>
Date: Thu, 10 Sep 2020 15:56:27 -0400
Subject: [PATCH 13/32] fix lint

---
 test/runtime/samples/onmount-get-current-component/_config.js | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/test/runtime/samples/onmount-get-current-component/_config.js b/test/runtime/samples/onmount-get-current-component/_config.js
index 727f8a2d8e..8f9529de5c 100644
--- a/test/runtime/samples/onmount-get-current-component/_config.js
+++ b/test/runtime/samples/onmount-get-current-component/_config.js
@@ -1,4 +1,4 @@
 export default {
 	skip_if_ssr: true,
-	html: `1`,
+	html: `1`
 };

From 5bf2d6fadfc14972d35adfef79ef21c21175771f Mon Sep 17 00:00:00 2001
From: Conduitry <git@chor.date>
Date: Thu, 10 Sep 2020 15:56:35 -0400
Subject: [PATCH 14/32] -> v3.25.0

---
 CHANGELOG.md      | 2 +-
 package-lock.json | 2 +-
 package.json      | 2 +-
 3 files changed, 3 insertions(+), 3 deletions(-)

diff --git a/CHANGELOG.md b/CHANGELOG.md
index 63fafd21df..21a9441c41 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,6 +1,6 @@
 # Svelte changelog
 
-## Unreleased
+## 3.25.0
 
 * Use `null` rather than `undefined` for coerced bound value of `<input type="number">` ([#1701](https://github.com/sveltejs/svelte/issues/1701))
 * Expose object of which slots have received content in `$$slots` ([#2106](https://github.com/sveltejs/svelte/issues/2106))
diff --git a/package-lock.json b/package-lock.json
index a19de0dba3..34189b3f63 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -1,6 +1,6 @@
 {
   "name": "svelte",
-  "version": "3.24.1",
+  "version": "3.25.0",
   "lockfileVersion": 1,
   "requires": true,
   "dependencies": {
diff --git a/package.json b/package.json
index 021b11ff16..59f35dfa80 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "svelte",
-  "version": "3.24.1",
+  "version": "3.25.0",
   "description": "Cybernetically enhanced web apps",
   "module": "index.mjs",
   "main": "index",

From 8271658fa8575bf30e4db50d3c1fc1ef9da50691 Mon Sep 17 00:00:00 2001
From: Conduitry <git@chor.date>
Date: Thu, 10 Sep 2020 19:54:50 -0400
Subject: [PATCH 15/32] site: revert to sapper@0.27

---
 site/package-lock.json | 15 +++------------
 site/package.json      |  2 +-
 2 files changed, 4 insertions(+), 13 deletions(-)

diff --git a/site/package-lock.json b/site/package-lock.json
index 014535652a..1dbad52271 100644
--- a/site/package-lock.json
+++ b/site/package-lock.json
@@ -3597,25 +3597,16 @@
       }
     },
     "sapper": {
-      "version": "0.28.6",
-      "resolved": "https://registry.npmjs.org/sapper/-/sapper-0.28.6.tgz",
-      "integrity": "sha512-PLCZXBcXcL2ISBh+CqoUxcT0MwMnA8N71UDNhQig0Em5Z8vqg+g2jpKfYSnnyxqB5Plwc9LipN5ZJr42Vs4hXg==",
+      "version": "0.27.16",
+      "resolved": "https://registry.npmjs.org/sapper/-/sapper-0.27.16.tgz",
+      "integrity": "sha512-q8dohkbhga6xO+0a8h84odFyoilQ0D0vJtF8NHra/DQmSeN2R2MXUfwhw3EyvLms3T1x8H3v+qw642Qf5JXA9g==",
       "dev": true,
       "requires": {
         "html-minifier": "^4.0.0",
         "http-link-header": "^1.0.2",
         "shimport": "^1.0.1",
-        "source-map": "^0.6.1",
         "sourcemap-codec": "^1.4.6",
         "string-hash": "^1.1.3"
-      },
-      "dependencies": {
-        "source-map": {
-          "version": "0.6.1",
-          "resolved": "https://registry.npmjs.org/source-map/-/source-map-0.6.1.tgz",
-          "integrity": "sha512-UjgapumWlbMhkBgzT7Ykc5YXUT46F0iKu8SGXq0bcwP5dz/h0Plj6enJqjz1Zbq2l5WaqYnrVbwWOWMyF3F47g==",
-          "dev": true
-        }
       }
     },
     "sax": {
diff --git a/site/package.json b/site/package.json
index b8b08c65e8..79ba2e6fed 100644
--- a/site/package.json
+++ b/site/package.json
@@ -54,7 +54,7 @@
     "rollup": "^2.26.10",
     "rollup-plugin-svelte": "^6.0.0",
     "rollup-plugin-terser": "^7.0.0",
-    "sapper": "^0.28.6",
+    "sapper": "^0.27.16",
     "shelljs": "^0.8.3",
     "svelte": "^3.12.0"
   },

From d9364c4e9cf1d0c65f6c1bd74705639f66f24626 Mon Sep 17 00:00:00 2001
From: Ben McCann <322311+benmccann@users.noreply.github.com>
Date: Thu, 10 Sep 2020 16:55:41 -0700
Subject: [PATCH 16/32] site: standardize building command (#5380)

---
 site/Makefile     | 2 +-
 site/README.md    | 2 +-
 site/package.json | 2 +-
 3 files changed, 3 insertions(+), 3 deletions(-)

diff --git a/site/Makefile b/site/Makefile
index 6fd08fd8ee..48b3e972e6 100644
--- a/site/Makefile
+++ b/site/Makefile
@@ -9,7 +9,7 @@ sapper:
 	@echo "\n~> updating template & contributors list"
 	@npm run update
 	@echo "\n~> building Sapper app"
-	@npm run sapper
+	@npm run build
 
 
 docker:
diff --git a/site/README.md b/site/README.md
index 892b8e1249..7d8adbd6c5 100644
--- a/site/README.md
+++ b/site/README.md
@@ -47,7 +47,7 @@ In order for the REPL's GitHub integration to work properly when running locally
 
 ## Building the site
 
-To build the website, run `npm run sapper`. The output can be found in `__sapper__/build`.
+To build the website, run `npm run build`. The output can be found in `__sapper__/build`.
 
 ## Testing
 
diff --git a/site/package.json b/site/package.json
index 79ba2e6fed..d1972c09d2 100644
--- a/site/package.json
+++ b/site/package.json
@@ -6,7 +6,7 @@
     "dev": "npm run copy-workers && sapper dev",
     "copy-workers": "node scripts/copy-workers.js",
     "migrate": "node-pg-migrate -r dotenv/config",
-    "sapper": "npm run copy-workers && sapper build --legacy",
+    "build": "npm run copy-workers && sapper build --legacy",
     "update": "node scripts/update_template.js && node scripts/get-contributors.js && node scripts/update_whos_using.js",
     "start": "node __sapper__/build",
     "test": "mocha -r esm test/**",

From 3255f8b662defe4c655ea47e2fba1d67ed6b8362 Mon Sep 17 00:00:00 2001
From: lonevox <38600896+lonevox@users.noreply.github.com>
Date: Sat, 12 Sep 2020 09:51:59 +1200
Subject: [PATCH 17/32] site: change "on to" to "onto" in tutorial 03 (#5386)

---
 site/content/tutorial/03-props/03-spread-props/text.md | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/site/content/tutorial/03-props/03-spread-props/text.md b/site/content/tutorial/03-props/03-spread-props/text.md
index aa7d4dc831..1480ad8065 100644
--- a/site/content/tutorial/03-props/03-spread-props/text.md
+++ b/site/content/tutorial/03-props/03-spread-props/text.md
@@ -2,10 +2,10 @@
 title: Spread props
 ---
 
-If you have an object of properties, you can 'spread' them on to a component instead of specifying each one:
+If you have an object of properties, you can 'spread' them onto a component instead of specifying each one:
 
 ```html
 <Info {...pkg}/>
 ```
 
-> Conversely, if you need to reference all the props that were passed into a component, including ones that weren't declared with `export`, you can do so by accessing `$$props` directly. It's not generally recommended, as it's difficult for Svelte to optimise, but it's useful in rare cases.
\ No newline at end of file
+> Conversely, if you need to reference all the props that were passed into a component, including ones that weren't declared with `export`, you can do so by accessing `$$props` directly. It's not generally recommended, as it's difficult for Svelte to optimise, but it's useful in rare cases.

From 04498769b5a835dcf6f0ae59f5e194fabf1b2c2a Mon Sep 17 00:00:00 2001
From: Rich Harris <richard.a.harris@gmail.com>
Date: Sun, 13 Sep 2020 09:00:16 -0400
Subject: [PATCH 18/32] bump site-kit version

---
 site/package-lock.json | 6 +++---
 site/package.json      | 2 +-
 2 files changed, 4 insertions(+), 4 deletions(-)

diff --git a/site/package-lock.json b/site/package-lock.json
index 1dbad52271..93932806f8 100644
--- a/site/package-lock.json
+++ b/site/package-lock.json
@@ -1449,9 +1449,9 @@
       }
     },
     "@sveltejs/site-kit": {
-      "version": "1.2.4",
-      "resolved": "https://registry.npmjs.org/@sveltejs/site-kit/-/site-kit-1.2.4.tgz",
-      "integrity": "sha512-W+/PthWX4R8UvKr+IyWIITGoY3cl/54ePZr3dU9ZlyP9r/weEvvKDBvjmW8tAKQFRfbxyySmXUxEGBoPhF8XAA==",
+      "version": "1.2.5",
+      "resolved": "https://registry.npmjs.org/@sveltejs/site-kit/-/site-kit-1.2.5.tgz",
+      "integrity": "sha512-fA1YWW4tYOxPRVocx+jF4S2LGamku8xeKx/+J5aY7ZCbwuo/c4VF+T0K7WuQRI8U6Dw3pJqdiCra+xH4TnCGRw==",
       "dev": true,
       "requires": {
         "@sindresorhus/slugify": "^0.9.1",
diff --git a/site/package.json b/site/package.json
index d1972c09d2..6e00636476 100644
--- a/site/package.json
+++ b/site/package.json
@@ -41,7 +41,7 @@
     "@rollup/plugin-node-resolve": "^9.0.0",
     "@rollup/plugin-replace": "^2.2.0",
     "@sindresorhus/slugify": "^0.9.1",
-    "@sveltejs/site-kit": "^1.2.4",
+    "@sveltejs/site-kit": "^1.2.5",
     "@sveltejs/svelte-repl": "^0.2.1",
     "degit": "^2.1.4",
     "dotenv": "^8.1.0",

From 7900e3eafac7a59a9d0af37069faf3e3b720918c Mon Sep 17 00:00:00 2001
From: Tan Li Hau <tanhauhau@users.noreply.github.com>
Date: Tue, 15 Sep 2020 20:32:55 +0800
Subject: [PATCH 19/32] fix style scoping with > * (#5400)

---
 CHANGELOG.md                                  |  4 ++
 src/compiler/compile/css/Selector.ts          |  4 +-
 .../_config.js                                | 45 +++++++++++++++++++
 .../expected.css                              |  1 +
 .../input.svelte                              | 23 ++++++++++
 5 files changed, 75 insertions(+), 2 deletions(-)
 create mode 100644 test/css/samples/unused-selector-child-combinator/_config.js
 create mode 100644 test/css/samples/unused-selector-child-combinator/expected.css
 create mode 100644 test/css/samples/unused-selector-child-combinator/input.svelte

diff --git a/CHANGELOG.md b/CHANGELOG.md
index 21a9441c41..d1481dd850 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,5 +1,9 @@
 # Svelte changelog
 
+## Unreleased
+
+* Fix scoping of styles involving child selector and `*` ([#5370](https://github.com/sveltejs/svelte/issues/5370))
+
 ## 3.25.0
 
 * Use `null` rather than `undefined` for coerced bound value of `<input type="number">` ([#1701](https://github.com/sveltejs/svelte/issues/1701))
diff --git a/src/compiler/compile/css/Selector.ts b/src/compiler/compile/css/Selector.ts
index 6bc046c93e..e3e1fa96bb 100644
--- a/src/compiler/compile/css/Selector.ts
+++ b/src/compiler/compile/css/Selector.ts
@@ -152,7 +152,7 @@ function apply_selector(blocks: Block[], node: Element, stack: Element[], to_enc
 	if (!block) return false;
 
 	if (!node) {
-		return blocks.every(block => block.global);
+		return block.global && blocks.every(block => block.global);
 	}
 
 	switch (block_might_apply_to_node(block, node)) {
@@ -208,7 +208,7 @@ function apply_selector(blocks: Block[], node: Element, stack: Element[], to_enc
 	return true;
 }
 
-function block_might_apply_to_node(block, node): BlockAppliesToNode {
+function block_might_apply_to_node(block: Block, node: Element): BlockAppliesToNode {
 	let i = block.selectors.length;
 
 	while (i--) {
diff --git a/test/css/samples/unused-selector-child-combinator/_config.js b/test/css/samples/unused-selector-child-combinator/_config.js
new file mode 100644
index 0000000000..becf382147
--- /dev/null
+++ b/test/css/samples/unused-selector-child-combinator/_config.js
@@ -0,0 +1,45 @@
+export default {
+	warnings: [
+		{
+			code: "css-unused-selector",
+			message: 'Unused CSS selector "article > *"',
+			frame: `
+			1: <style>
+			2:   article > * {
+			     ^
+			3:     font-size: 36px;
+			4:   }`,
+			pos: 10,
+			start: { character: 10, column: 1, line: 2 },
+			end: { character: 21, column: 12, line: 2 }
+		},
+		{
+			code: "css-unused-selector",
+			message: 'Unused CSS selector "article *"',
+			frame: `
+			4:   }
+			5:
+			6:   article * {
+			     ^
+			7:     font-size: 36px;
+			8:   }`,
+			pos: 49,
+			start: { character: 49, column: 1, line: 6 },
+			end: { character: 58, column: 10, line: 6 }
+		},
+		{
+			code: "css-unused-selector",
+			message: 'Unused CSS selector ".article > *"',
+			frame: `
+			 8:   }
+			 9:
+			10:   .article > * {
+			      ^
+			11:     font-size: 48px;
+			12:   }`,
+			pos: 86,
+			start: { character: 86, column: 1, line: 10 },
+			end: { character: 98, column: 13, line: 10 }
+		}
+	]
+};
diff --git a/test/css/samples/unused-selector-child-combinator/expected.css b/test/css/samples/unused-selector-child-combinator/expected.css
new file mode 100644
index 0000000000..68b778844f
--- /dev/null
+++ b/test/css/samples/unused-selector-child-combinator/expected.css
@@ -0,0 +1 @@
+div.svelte-xyz>.svelte-xyz{color:orange}
\ No newline at end of file
diff --git a/test/css/samples/unused-selector-child-combinator/input.svelte b/test/css/samples/unused-selector-child-combinator/input.svelte
new file mode 100644
index 0000000000..33a27e0465
--- /dev/null
+++ b/test/css/samples/unused-selector-child-combinator/input.svelte
@@ -0,0 +1,23 @@
+<style>	
+	article > * {
+		font-size: 36px;
+  }
+
+	article * {
+		font-size: 36px;
+	}
+	
+	.article > * {
+		font-size: 48px;
+	}
+	
+	div > * {
+		color: orange;
+	}
+</style>
+
+<div>
+	<p>
+		Svelte REPLs are svelte.
+	</p>
+</div>
\ No newline at end of file

From 46d423d9dbf647e7d8e6d408937312ba694708c1 Mon Sep 17 00:00:00 2001
From: Tan Li Hau <tanhauhau@users.noreply.github.com>
Date: Tue, 15 Sep 2020 20:39:57 +0800
Subject: [PATCH 20/32] fix css specificity for child combinator (#5399)

---
 CHANGELOG.md                                   |  1 +
 src/compiler/compile/css/Selector.ts           |  8 +++-----
 test/css/samples/child-combinator/expected.css |  1 +
 test/css/samples/child-combinator/input.svelte | 14 ++++++++++++++
 4 files changed, 19 insertions(+), 5 deletions(-)
 create mode 100644 test/css/samples/child-combinator/expected.css
 create mode 100644 test/css/samples/child-combinator/input.svelte

diff --git a/CHANGELOG.md b/CHANGELOG.md
index d1481dd850..ae228a3b0a 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -2,6 +2,7 @@
 
 ## Unreleased
 
+* Fix specificity of certain styles involving a child selector ([#4795](https://github.com/sveltejs/svelte/issues/4795))
 * Fix scoping of styles involving child selector and `*` ([#5370](https://github.com/sveltejs/svelte/issues/5370))
 
 ## 3.25.0
diff --git a/src/compiler/compile/css/Selector.ts b/src/compiler/compile/css/Selector.ts
index e3e1fa96bb..d18a7e7ba6 100644
--- a/src/compiler/compile/css/Selector.ts
+++ b/src/compiler/compile/css/Selector.ts
@@ -65,9 +65,8 @@ export default class Selector {
 
 	transform(code: MagicString, attr: string, max_amount_class_specificity_increased: number) {
 		const amount_class_specificity_to_increase = max_amount_class_specificity_increased - this.blocks.filter(block => block.should_encapsulate).length;
-		attr = attr.repeat(amount_class_specificity_to_increase + 1);
 
-		function encapsulate_block(block: Block) {
+		function encapsulate_block(block: Block, attr: string) {
 			let i = block.selectors.length;
 
 			while (i--) {
@@ -89,15 +88,14 @@ export default class Selector {
 			}
 		}
 
-		this.blocks.forEach((block) => {
+		this.blocks.forEach((block, index) => {
 			if (block.global) {
 				const selector = block.selectors[0];
 				const first = selector.children[0];
 				const last = selector.children[selector.children.length - 1];
 				code.remove(selector.start, first.start).remove(last.end, selector.end);
 			}
-
-			if (block.should_encapsulate) encapsulate_block(block);
+			if (block.should_encapsulate) encapsulate_block(block, index === this.blocks.length - 1 ? attr.repeat(amount_class_specificity_to_increase + 1) : attr);
 		});
 	}
 
diff --git a/test/css/samples/child-combinator/expected.css b/test/css/samples/child-combinator/expected.css
new file mode 100644
index 0000000000..5d50ae16d7
--- /dev/null
+++ b/test/css/samples/child-combinator/expected.css
@@ -0,0 +1 @@
+main.svelte-xyz button.svelte-xyz.svelte-xyz{background-color:red}main.svelte-xyz div.svelte-xyz>button.svelte-xyz{background-color:blue}
\ No newline at end of file
diff --git a/test/css/samples/child-combinator/input.svelte b/test/css/samples/child-combinator/input.svelte
new file mode 100644
index 0000000000..9d5d8d27e0
--- /dev/null
+++ b/test/css/samples/child-combinator/input.svelte
@@ -0,0 +1,14 @@
+<style>
+  main button {
+    background-color: red;
+  }
+
+  main div > button {
+    background-color: blue;
+  }
+</style>
+<main>
+  <div>
+    <button type="submit">Blue</button>
+  </div>
+</main>
\ No newline at end of file

From 338cf877bcd8b53f8418cda86b5685e5cb91b28e Mon Sep 17 00:00:00 2001
From: Tan Li Hau <tanhauhau@users.noreply.github.com>
Date: Tue, 15 Sep 2020 20:49:35 +0800
Subject: [PATCH 21/32] maintain context for transition (#5392)

---
 CHANGELOG.md                                    |  1 +
 src/compiler/compile/nodes/Transition.ts        |  2 +-
 .../render_dom/wrappers/Element/index.ts        |  4 ++++
 .../transition-js-args-dynamic/_config.js       | 15 +++++++++++++++
 .../transition-js-args-dynamic/main.svelte      | 17 +++++++++++++++++
 5 files changed, 38 insertions(+), 1 deletion(-)
 create mode 100644 test/runtime/samples/transition-js-args-dynamic/_config.js
 create mode 100644 test/runtime/samples/transition-js-args-dynamic/main.svelte

diff --git a/CHANGELOG.md b/CHANGELOG.md
index ae228a3b0a..b4ffb19d3c 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -3,6 +3,7 @@
 ## Unreleased
 
 * Fix specificity of certain styles involving a child selector ([#4795](https://github.com/sveltejs/svelte/issues/4795))
+* Fix transitions that are parameterised with stores ([#5244](https://github.com/sveltejs/svelte/issues/5244))
 * Fix scoping of styles involving child selector and `*` ([#5370](https://github.com/sveltejs/svelte/issues/5370))
 
 ## 3.25.0
diff --git a/src/compiler/compile/nodes/Transition.ts b/src/compiler/compile/nodes/Transition.ts
index a680fde46e..983a6ee6c7 100644
--- a/src/compiler/compile/nodes/Transition.ts
+++ b/src/compiler/compile/nodes/Transition.ts
@@ -34,7 +34,7 @@ export default class Transition extends Node {
 		}
 
 		this.expression = info.expression
-			? new Expression(component, this, scope, info.expression, true)
+			? new Expression(component, this, scope, info.expression)
 			: null;
 	}
 }
diff --git a/src/compiler/compile/render_dom/wrappers/Element/index.ts b/src/compiler/compile/render_dom/wrappers/Element/index.ts
index 2e35f0271f..f740560bcd 100644
--- a/src/compiler/compile/render_dom/wrappers/Element/index.ts
+++ b/src/compiler/compile/render_dom/wrappers/Element/index.ts
@@ -868,6 +868,10 @@ export default class ElementWrapper extends Wrapper {
 				block.chunks.destroy.push(b`if (detaching && ${outro_name}) ${outro_name}.end();`);
 			}
 		}
+
+		if ((intro && intro.expression && intro.expression.dependencies.size) || (outro && outro.expression && outro.expression.dependencies.size)) {
+			block.maintain_context = true;
+		}
 	}
 
 	add_animation(block: Block) {
diff --git a/test/runtime/samples/transition-js-args-dynamic/_config.js b/test/runtime/samples/transition-js-args-dynamic/_config.js
new file mode 100644
index 0000000000..513a17486a
--- /dev/null
+++ b/test/runtime/samples/transition-js-args-dynamic/_config.js
@@ -0,0 +1,15 @@
+export default {
+	test({ assert, component, target, window, raf }) {
+		component.visible = true;
+
+		const div = target.querySelector('div');
+
+		assert.equal(div.value, 0);
+
+		raf.tick(200);
+
+		div.value = 'test';
+		component.visible = false;
+		assert.equal(div.value, 'test');
+	}
+};
diff --git a/test/runtime/samples/transition-js-args-dynamic/main.svelte b/test/runtime/samples/transition-js-args-dynamic/main.svelte
new file mode 100644
index 0000000000..1bb149de32
--- /dev/null
+++ b/test/runtime/samples/transition-js-args-dynamic/main.svelte
@@ -0,0 +1,17 @@
+<script>
+	export let visible = false;
+	export let value = 0;
+
+	function foo(node, params) {
+		return {
+			duration: 100,
+			tick: () => {
+				node.value = value;
+			}
+		};
+	}
+</script>
+
+{#if visible}
+	<div transition:foo={{value}}></div>
+{/if}
\ No newline at end of file

From 1ce6ac5d483c12d42096370947ff7ae0bccb2c13 Mon Sep 17 00:00:00 2001
From: Tan Li Hau <tanhauhau@users.noreply.github.com>
Date: Tue, 15 Sep 2020 21:03:09 +0800
Subject: [PATCH 22/32] fix destructuring to get multiple stores (#5390)

---
 CHANGELOG.md                                  |  1 +
 src/compiler/compile/Component.ts             | 10 +++-------
 src/compiler/compile/render_dom/Renderer.ts   |  6 ++++--
 src/compiler/compile/render_dom/invalidate.ts | 20 +++++++++++--------
 .../_config.js                                |  3 +++
 .../main.svelte                               | 16 +++++++++++++++
 .../main.svelte                               |  3 +++
 .../main.svelte                               | 15 +++++++++-----
 .../samples/store-resubscribe-c/_config.js    |  3 +++
 .../samples/store-resubscribe-c/main.svelte   | 16 +++++++++++++++
 10 files changed, 71 insertions(+), 22 deletions(-)
 create mode 100644 test/runtime/samples/reactive-assignment-in-complex-declaration-with-store/_config.js
 create mode 100644 test/runtime/samples/reactive-assignment-in-complex-declaration-with-store/main.svelte
 create mode 100644 test/runtime/samples/store-resubscribe-c/_config.js
 create mode 100644 test/runtime/samples/store-resubscribe-c/main.svelte

diff --git a/CHANGELOG.md b/CHANGELOG.md
index b4ffb19d3c..2c9922a086 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -5,6 +5,7 @@
 * Fix specificity of certain styles involving a child selector ([#4795](https://github.com/sveltejs/svelte/issues/4795))
 * Fix transitions that are parameterised with stores ([#5244](https://github.com/sveltejs/svelte/issues/5244))
 * Fix scoping of styles involving child selector and `*` ([#5370](https://github.com/sveltejs/svelte/issues/5370))
+* Fix destructuring which reassigns stores ([#5388](https://github.com/sveltejs/svelte/issues/5388))
 
 ## 3.25.0
 
diff --git a/src/compiler/compile/Component.ts b/src/compiler/compile/Component.ts
index ed2b10e404..078ecb8869 100644
--- a/src/compiler/compile/Component.ts
+++ b/src/compiler/compile/Component.ts
@@ -947,12 +947,6 @@ export default class Component {
 							const variable = component.var_lookup.get(name);
 
 							if (variable.export_name && variable.writable) {
-								const insert = variable.subscribable
-									? get_insert(variable)
-									: null;
-
-								parent[key].splice(index + 1, 0, insert);
-
 								declarator.id = {
 									type: 'ObjectPattern',
 									properties: [{
@@ -973,7 +967,9 @@ export default class Component {
 								};
 
 								declarator.init = x`$$props`;
-							} else if (variable.subscribable) {
+							}
+
+							if (variable.subscribable && declarator.init) {
 								const insert = get_insert(variable);
 								parent[key].splice(index + 1, 0, ...insert);
 							}
diff --git a/src/compiler/compile/render_dom/Renderer.ts b/src/compiler/compile/render_dom/Renderer.ts
index 6fc026de23..0990281d91 100644
--- a/src/compiler/compile/render_dom/Renderer.ts
+++ b/src/compiler/compile/render_dom/Renderer.ts
@@ -166,12 +166,14 @@ export default class Renderer {
 		return member;
 	}
 
-	invalidate(name: string, value?) {
+	invalidate(name: string, value?, main_execution_context: boolean = false) {
 		const variable = this.component.var_lookup.get(name);
 		const member = this.context_lookup.get(name);
 
 		if (variable && (variable.subscribable && (variable.reassigned || variable.export_name))) {
-			return x`${`$$subscribe_${name}`}($$invalidate(${member.index}, ${value || name}))`;
+			return main_execution_context
+			  ? x`${`$$subscribe_${name}`}(${value || name})`
+			  : x`${`$$subscribe_${name}`}($$invalidate(${member.index}, ${value || name}))`;
 		}
 
 		if (name[0] === '$' && name[1] !== '$') {
diff --git a/src/compiler/compile/render_dom/invalidate.ts b/src/compiler/compile/render_dom/invalidate.ts
index 28e4f37e3f..c7d9759ccd 100644
--- a/src/compiler/compile/render_dom/invalidate.ts
+++ b/src/compiler/compile/render_dom/invalidate.ts
@@ -31,10 +31,9 @@ export function invalidate(renderer: Renderer, scope: Scope, node: Node, names:
 
 	function get_invalidated(variable: Var, node?: Expression) {
 		if (main_execution_context && !variable.subscribable && variable.name[0] !== '$') {
-			return node || x`${variable.name}`;
+			return node;
 		}
-
-		return renderer.invalidate(variable.name);
+		return renderer.invalidate(variable.name, undefined, main_execution_context);
 	}
 
 	if (head) {
@@ -44,12 +43,15 @@ export function invalidate(renderer: Renderer, scope: Scope, node: Node, names:
 			return get_invalidated(head, node);
 		} else {
 			const is_store_value = head.name[0] === '$' && head.name[1] !== '$';
-			const extra_args = tail.map(variable => get_invalidated(variable));
+			const extra_args = tail.map(variable => get_invalidated(variable)).filter(Boolean);
 
 			const pass_value = (
-				extra_args.length > 0 ||
-				(node.type === 'AssignmentExpression' && node.left.type !== 'Identifier') ||
-				(node.type === 'UpdateExpression' && (!node.prefix || node.argument.type !== 'Identifier'))
+				!main_execution_context && 
+				(
+					extra_args.length > 0 ||
+					(node.type === 'AssignmentExpression' && node.left.type !== 'Identifier') ||
+					(node.type === 'UpdateExpression' && (!node.prefix || node.argument.type !== 'Identifier'))
+				)
 			);
 
 			if (pass_value) {
@@ -63,7 +65,9 @@ export function invalidate(renderer: Renderer, scope: Scope, node: Node, names:
 				? x`@set_store_value(${head.name.slice(1)}, ${node}, ${extra_args})`
 				: !main_execution_context
 					? x`$$invalidate(${renderer.context_lookup.get(head.name).index}, ${node}, ${extra_args})`
-					: node;
+					: extra_args.length
+						? [node, ...extra_args]
+						: node;
 
 			if (head.subscribable && head.reassigned) {
 				const subscribe = `$$subscribe_${head.name}`;
diff --git a/test/runtime/samples/reactive-assignment-in-complex-declaration-with-store/_config.js b/test/runtime/samples/reactive-assignment-in-complex-declaration-with-store/_config.js
new file mode 100644
index 0000000000..e74cea70fe
--- /dev/null
+++ b/test/runtime/samples/reactive-assignment-in-complex-declaration-with-store/_config.js
@@ -0,0 +1,3 @@
+export default {
+	html: `<h1>2 2 xxx 5 6</h1>`
+};
\ No newline at end of file
diff --git a/test/runtime/samples/reactive-assignment-in-complex-declaration-with-store/main.svelte b/test/runtime/samples/reactive-assignment-in-complex-declaration-with-store/main.svelte
new file mode 100644
index 0000000000..5ad442e1da
--- /dev/null
+++ b/test/runtime/samples/reactive-assignment-in-complex-declaration-with-store/main.svelte
@@ -0,0 +1,16 @@
+<script>
+	import { writable } from 'svelte/store';
+
+	let eid = writable(1);
+	let foo;
+	let u;
+	let v;
+	let w;
+	[u, v, w] = [
+		{id: eid = writable(foo = 2), name: 'xxx'},
+		5,
+		writable(6)
+	];
+</script>
+
+<h1>{foo} {$eid} {u.name} {v} {$w}</h1>
diff --git a/test/runtime/samples/reactive-assignment-in-declaration/main.svelte b/test/runtime/samples/reactive-assignment-in-declaration/main.svelte
index 8aa05964dd..edac4427bb 100644
--- a/test/runtime/samples/reactive-assignment-in-declaration/main.svelte
+++ b/test/runtime/samples/reactive-assignment-in-declaration/main.svelte
@@ -1,6 +1,9 @@
 <script>
 	let foo;
 	let bar = (foo = 1);
+	function a() {
+		bar = (foo = 1);
+	}
 </script>
 
 <h1>{foo} {bar}</h1>
diff --git a/test/runtime/samples/reactive-assignment-in-for-loop-head/main.svelte b/test/runtime/samples/reactive-assignment-in-for-loop-head/main.svelte
index 1c24f364ac..b007f6fe8b 100644
--- a/test/runtime/samples/reactive-assignment-in-for-loop-head/main.svelte
+++ b/test/runtime/samples/reactive-assignment-in-for-loop-head/main.svelte
@@ -1,9 +1,14 @@
 <script>
-  let foo1;
-  let foo2;
-  for (let bar = (foo1 = 0); bar < 5; bar += 1) {
-    foo2 = foo1;
-  }
+	let foo1;
+	let foo2;
+	for (let bar = (foo1 = 0); bar < 5; bar += 1) {
+		foo2 = foo1;
+	}
+	function a() {
+		for (let bar = (foo1 = 0); bar < 5; bar += 1) {
+			foo2 = foo1;
+		}
+	}
 </script>
 
 <h1>{foo1} {foo2}</h1>
diff --git a/test/runtime/samples/store-resubscribe-c/_config.js b/test/runtime/samples/store-resubscribe-c/_config.js
new file mode 100644
index 0000000000..80b4fa702d
--- /dev/null
+++ b/test/runtime/samples/store-resubscribe-c/_config.js
@@ -0,0 +1,3 @@
+export default {
+	html: `31 42`
+};
diff --git a/test/runtime/samples/store-resubscribe-c/main.svelte b/test/runtime/samples/store-resubscribe-c/main.svelte
new file mode 100644
index 0000000000..c52a5402bd
--- /dev/null
+++ b/test/runtime/samples/store-resubscribe-c/main.svelte
@@ -0,0 +1,16 @@
+<script>
+	import { writable } from 'svelte/store';
+	const context = {
+		store1: writable(31),
+		store2: writable(42)
+	};
+	let store1;
+	let store2;
+	({
+		store1,
+		store2
+	} = context);
+</script>
+
+{$store1}
+{$store2}

From 87ed0b2f427fa6552feafcf05c39c40e27ec80fb Mon Sep 17 00:00:00 2001
From: Tan Li Hau <tanhauhau@users.noreply.github.com>
Date: Tue, 15 Sep 2020 21:13:50 +0800
Subject: [PATCH 23/32] fix await stuck indefinitely without catch (#5402)

---
 CHANGELOG.md                                        | 1 +
 src/runtime/internal/await_block.ts                 | 6 +++---
 test/runtime/samples/await-without-catch/_config.js | 1 +
 3 files changed, 5 insertions(+), 3 deletions(-)

diff --git a/CHANGELOG.md b/CHANGELOG.md
index 2c9922a086..bc8272f84a 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -6,6 +6,7 @@
 * Fix transitions that are parameterised with stores ([#5244](https://github.com/sveltejs/svelte/issues/5244))
 * Fix scoping of styles involving child selector and `*` ([#5370](https://github.com/sveltejs/svelte/issues/5370))
 * Fix destructuring which reassigns stores ([#5388](https://github.com/sveltejs/svelte/issues/5388))
+* Fix `{#await}`s with no `{:catch}` getting stuck unresolved if the promise rejects ([#5401](https://github.com/sveltejs/svelte/issues/5401))
 
 ## 3.25.0
 
diff --git a/src/runtime/internal/await_block.ts b/src/runtime/internal/await_block.ts
index 3821520837..4b7ca6fd21 100644
--- a/src/runtime/internal/await_block.ts
+++ b/src/runtime/internal/await_block.ts
@@ -59,12 +59,12 @@ export function handle_promise(promise, info) {
 			update(info.then, 1, info.value, value);
 			set_current_component(null);
 		}, error => {
-			if (!info.hasCatch) {
-				throw error;
-			}
 			set_current_component(current_component);
 			update(info.catch, 2, info.error, error);
 			set_current_component(null);
+			if (!info.hasCatch) {
+				throw error;
+			}
 		});
 
 		// if we previously had a then/catch block, destroy it
diff --git a/test/runtime/samples/await-without-catch/_config.js b/test/runtime/samples/await-without-catch/_config.js
index 2030ed7949..1b7da5c0be 100644
--- a/test/runtime/samples/await-without-catch/_config.js
+++ b/test/runtime/samples/await-without-catch/_config.js
@@ -39,6 +39,7 @@ export default {
 		})
 		.catch((err) => {
 			assert.equal(err.message, 'this error should be thrown');
+			assert.htmlEqual(target.innerHTML, '');
 		});
 	}
 };
\ No newline at end of file

From ccf0bcf4692742457be872e54382b7fc5ca63c23 Mon Sep 17 00:00:00 2001
From: milahu <milahu@gmail.com>
Date: Tue, 15 Sep 2020 15:17:43 +0200
Subject: [PATCH 24/32] merge mocharc.coverage into mocharc (#5385)

---
 .mocharc.coverage.js | 10 ----------
 .mocharc.js          | 10 ++++++++++
 package.json         |  6 +++---
 3 files changed, 13 insertions(+), 13 deletions(-)
 delete mode 100644 .mocharc.coverage.js

diff --git a/.mocharc.coverage.js b/.mocharc.coverage.js
deleted file mode 100644
index 91c93518ca..0000000000
--- a/.mocharc.coverage.js
+++ /dev/null
@@ -1,10 +0,0 @@
-module.exports = Object.assign(
-	{},
-	require('./mocharc.js'),
-	{
-		fullTrace: true,
-		require: [
-			'source-map-support/register'
-		]
-	}
-);
diff --git a/.mocharc.js b/.mocharc.js
index 6159fd937f..de41cdd353 100644
--- a/.mocharc.js
+++ b/.mocharc.js
@@ -3,3 +3,13 @@ module.exports = {
 		'test/test.js'
 	]
 };
+
+// add coverage options when running 'npx c8 mocha'
+if (process.env.NODE_V8_COVERAGE) {
+	Object.assign(module.exports, {
+		fullTrace: true,
+		require: [
+			'source-map-support/register'
+		]
+	});
+}
diff --git a/package.json b/package.json
index 59f35dfa80..8f8ad32911 100644
--- a/package.json
+++ b/package.json
@@ -23,10 +23,10 @@
   },
   "types": "types/runtime/index.d.ts",
   "scripts": {
-    "test": "mocha --config .mocharc.js",
+    "test": "mocha",
     "test:unit": "mocha --require sucrase/register --recursive src/**/__test__.ts",
-    "quicktest": "mocha --config .mocharc.js",
-    "precoverage": "c8 mocha --config .mocharc.coverage.js",
+    "quicktest": "mocha",
+    "precoverage": "c8 mocha",
     "coverage": "c8 report --reporter=text-lcov > coverage.lcov && c8 report --reporter=html",
     "codecov": "codecov",
     "precodecov": "npm run coverage",

From 660114325540e6bb06eec57ae39d743c408ef09e Mon Sep 17 00:00:00 2001
From: Conduitry <git@chor.date>
Date: Tue, 15 Sep 2020 09:31:37 -0400
Subject: [PATCH 25/32] -> v3.25.1

---
 CHANGELOG.md      | 2 +-
 package-lock.json | 2 +-
 package.json      | 2 +-
 3 files changed, 3 insertions(+), 3 deletions(-)

diff --git a/CHANGELOG.md b/CHANGELOG.md
index bc8272f84a..9569b4ff7b 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,6 +1,6 @@
 # Svelte changelog
 
-## Unreleased
+## 3.25.1
 
 * Fix specificity of certain styles involving a child selector ([#4795](https://github.com/sveltejs/svelte/issues/4795))
 * Fix transitions that are parameterised with stores ([#5244](https://github.com/sveltejs/svelte/issues/5244))
diff --git a/package-lock.json b/package-lock.json
index 34189b3f63..d1ec8d275f 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -1,6 +1,6 @@
 {
   "name": "svelte",
-  "version": "3.25.0",
+  "version": "3.25.1",
   "lockfileVersion": 1,
   "requires": true,
   "dependencies": {
diff --git a/package.json b/package.json
index 8f8ad32911..20325b4fbf 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "svelte",
-  "version": "3.25.0",
+  "version": "3.25.1",
   "description": "Cybernetically enhanced web apps",
   "module": "index.mjs",
   "main": "index",

From 5f422d8ddbcdb8cebc18f7a66871f24d1fc02108 Mon Sep 17 00:00:00 2001
From: infuzz <39411241+infuzz@users.noreply.github.com>
Date: Tue, 15 Sep 2020 17:49:07 +0200
Subject: [PATCH 26/32] Link to more video courses in FAQ (#5396)

Co-authored-by: Ben McCann <322311+benmccann@users.noreply.github.com>
---
 site/content/faq/200-are-there-any-video-courses.md | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/site/content/faq/200-are-there-any-video-courses.md b/site/content/faq/200-are-there-any-video-courses.md
index 1a70cdfcf5..97e0e9d808 100644
--- a/site/content/faq/200-are-there-any-video-courses.md
+++ b/site/content/faq/200-are-there-any-video-courses.md
@@ -6,9 +6,9 @@ Rich Harris, the creator of Svelte, taught a course:
 
 - [Frontend Masters](https://frontendmasters.com/courses/svelte/)
 
-There are also a couple of third-party courses:
+There are also a number of third-party courses:
 
-- [Egghead](https://egghead.io/playlists/getting-started-with-svelte-3-05a8541a)
-- [Udemy](https://www.udemy.com/sveltejs-the-complete-guide/)
+- [Egghead](https://egghead.io/browse/frameworks/svelte)
+- [Udemy](https://www.udemy.com/courses/search/?q=sveltejs+svelte)
 
 Note that Udemy very frequently has discounts over 90%.

From bd2175b67b1b1c3a7a89003aab1a9cd838c649f5 Mon Sep 17 00:00:00 2001
From: Shriji <shrijike@gmail.com>
Date: Tue, 15 Sep 2020 21:23:46 +0530
Subject: [PATCH 27/32] Add list of books to FAQ (#5404)

---
 site/content/faq/250-are-there-any-books.md | 9 +++++++++
 1 file changed, 9 insertions(+)
 create mode 100644 site/content/faq/250-are-there-any-books.md

diff --git a/site/content/faq/250-are-there-any-books.md b/site/content/faq/250-are-there-any-books.md
new file mode 100644
index 0000000000..80870428ec
--- /dev/null
+++ b/site/content/faq/250-are-there-any-books.md
@@ -0,0 +1,9 @@
+---
+question: Are there any books?
+---
+
+There are a few books:
+
+- [Svelte Handbook](https://flaviocopes.com/page/download-svelte-handbook/) by Flavio Copes
+- [Svelte 3 Up and Running](https://www.amazon.com/dp/B08D6T6BKS/) by Alessandro Segala
+- [Svelte and Sapper in Action](https://www.manning.com/books/svelte-and-sapper-in-action) by R. Mark Volkmann

From 5f938535a1a89232a322fe013bc6dc98c5a3fc67 Mon Sep 17 00:00:00 2001
From: Rohan Kokane <rohankokane19@gmail.com>
Date: Tue, 15 Sep 2020 21:24:42 +0530
Subject: [PATCH 28/32] Fix scrollbar being hidden by header on site (#5342)

---
 site/src/routes/_layout.svelte         | 1 -
 site/src/routes/repl/[id]/index.svelte | 2 +-
 2 files changed, 1 insertion(+), 2 deletions(-)

diff --git a/site/src/routes/_layout.svelte b/site/src/routes/_layout.svelte
index 07445de0a0..55f4861880 100644
--- a/site/src/routes/_layout.svelte
+++ b/site/src/routes/_layout.svelte
@@ -62,7 +62,6 @@
 
 <style>
 	main {
-		height: 100%;
 		position: relative;
 		margin: 0 auto;
 		/* padding: var(--nav-h) var(--side-nav) 0 var(--side-nav); */
diff --git a/site/src/routes/repl/[id]/index.svelte b/site/src/routes/repl/[id]/index.svelte
index 59ca292adb..945678ba33 100644
--- a/site/src/routes/repl/[id]/index.svelte
+++ b/site/src/routes/repl/[id]/index.svelte
@@ -117,7 +117,7 @@
 <style>
 	.repl-outer {
 		position: relative;
-		height: 100%;
+		height: calc(100vh - var(--nav-h));
 		--app-controls-h: 5.6rem;
 		--pane-controls-h: 4.2rem;
 		overflow: hidden;

From aef567141155d024a6130d645746ee515f5efb83 Mon Sep 17 00:00:00 2001
From: Tan Li Hau <tanhauhau@users.noreply.github.com>
Date: Sat, 19 Sep 2020 00:09:44 +0800
Subject: [PATCH 29/32] update acorn and parse expression as module script
 (#5423)

---
 CHANGELOG.md                                  |  5 ++
 package-lock.json                             |  6 +--
 package.json                                  |  2 +-
 .../compile/nodes/shared/Expression.ts        |  2 +
 src/compiler/parse/acorn.ts                   |  5 +-
 test/js/samples/import-meta/expected.js       | 53 +++++++++++++++++++
 test/js/samples/import-meta/input.svelte      |  6 +++
 .../samples/numeric-seperator/_config.js      |  3 ++
 .../samples/numeric-seperator/main.svelte     |  5 ++
 .../validator/samples/import-meta/errors.json |  1 +
 .../samples/import-meta/input.svelte          |  6 +++
 11 files changed, 88 insertions(+), 6 deletions(-)
 create mode 100644 test/js/samples/import-meta/expected.js
 create mode 100644 test/js/samples/import-meta/input.svelte
 create mode 100644 test/runtime/samples/numeric-seperator/_config.js
 create mode 100644 test/runtime/samples/numeric-seperator/main.svelte
 create mode 100644 test/validator/samples/import-meta/errors.json
 create mode 100644 test/validator/samples/import-meta/input.svelte

diff --git a/CHANGELOG.md b/CHANGELOG.md
index 9569b4ff7b..8d953183bf 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,5 +1,10 @@
 # Svelte changelog
 
+## Unreleased
+
+* Support `_` as numeric separator ([#5407](https://github.com/sveltejs/svelte/issues/5407))
+* Support `import.meta` in template expressions ([#5422](https://github.com/sveltejs/svelte/issues/5422))
+
 ## 3.25.1
 
 * Fix specificity of certain styles involving a child selector ([#4795](https://github.com/sveltejs/svelte/issues/4795))
diff --git a/package-lock.json b/package-lock.json
index d1ec8d275f..2e2a95b362 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -315,9 +315,9 @@
       "dev": true
     },
     "acorn": {
-      "version": "7.3.1",
-      "resolved": "https://registry.npmjs.org/acorn/-/acorn-7.3.1.tgz",
-      "integrity": "sha512-tLc0wSnatxAQHVHUapaHdz72pi9KUyHjq5KyHjGg9Y8Ifdc79pTh2XvI6I1/chZbnM7QtNKzh66ooDogPZSleA==",
+      "version": "7.4.0",
+      "resolved": "https://registry.npmjs.org/acorn/-/acorn-7.4.0.tgz",
+      "integrity": "sha512-+G7P8jJmCHr+S+cLfQxygbWhXy+8YTVGzAkpEbcLo2mLoL7tij/VG41QSHACSf5QgYRhMZYHuNc6drJaO0Da+w==",
       "dev": true
     },
     "acorn-globals": {
diff --git a/package.json b/package.json
index 20325b4fbf..7ebb41fdfb 100644
--- a/package.json
+++ b/package.json
@@ -68,7 +68,7 @@
     "@types/node": "^8.10.53",
     "@typescript-eslint/eslint-plugin": "^3.0.2",
     "@typescript-eslint/parser": "^3.0.2",
-    "acorn": "^7.3.1",
+    "acorn": "^7.4.0",
     "agadoo": "^1.1.0",
     "c8": "^5.0.1",
     "code-red": "^0.1.3",
diff --git a/src/compiler/compile/nodes/shared/Expression.ts b/src/compiler/compile/nodes/shared/Expression.ts
index bbbc1b2f2d..834287bb63 100644
--- a/src/compiler/compile/nodes/shared/Expression.ts
+++ b/src/compiler/compile/nodes/shared/Expression.ts
@@ -64,6 +64,8 @@ export default class Expression {
 			enter(node: any, parent: any, key: string) {
 				// don't manipulate shorthand props twice
 				if (key === 'value' && parent.shorthand) return;
+				// don't manipulate `import.meta`, `new.target`
+				if (node.type === 'MetaProperty') return this.skip();
 
 				if (map.has(node)) {
 					scope = map.get(node);
diff --git a/src/compiler/parse/acorn.ts b/src/compiler/parse/acorn.ts
index d14721cdab..58031c1a1c 100644
--- a/src/compiler/parse/acorn.ts
+++ b/src/compiler/parse/acorn.ts
@@ -3,11 +3,12 @@ import * as code_red from 'code-red';
 
 export const parse = (source: string): Node => code_red.parse(source, {
 	sourceType: 'module',
-	ecmaVersion: 11,
+	ecmaVersion: 12,
 	locations: true
 });
 
 export const parse_expression_at = (source: string, index: number): Node => code_red.parseExpressionAt(source, index, {
-	ecmaVersion: 11,
+	sourceType: 'module',
+	ecmaVersion: 12,
 	locations: true
 });
\ No newline at end of file
diff --git a/test/js/samples/import-meta/expected.js b/test/js/samples/import-meta/expected.js
new file mode 100644
index 0000000000..ba77398321
--- /dev/null
+++ b/test/js/samples/import-meta/expected.js
@@ -0,0 +1,53 @@
+/* generated by Svelte vX.Y.Z */
+import {
+	SvelteComponent,
+	detach,
+	init,
+	insert,
+	noop,
+	safe_not_equal,
+	space,
+	text
+} from "svelte/internal";
+
+function create_fragment(ctx) {
+	let t0;
+	let t1;
+	let t2_value = import.meta.url + "";
+	let t2;
+
+	return {
+		c() {
+			t0 = text(/*url*/ ctx[0]);
+			t1 = space();
+			t2 = text(t2_value);
+		},
+		m(target, anchor) {
+			insert(target, t0, anchor);
+			insert(target, t1, anchor);
+			insert(target, t2, anchor);
+		},
+		p: noop,
+		i: noop,
+		o: noop,
+		d(detaching) {
+			if (detaching) detach(t0);
+			if (detaching) detach(t1);
+			if (detaching) detach(t2);
+		}
+	};
+}
+
+function instance($$self) {
+	const url = import.meta.url;
+	return [url];
+}
+
+class Component extends SvelteComponent {
+	constructor(options) {
+		super();
+		init(this, options, instance, create_fragment, safe_not_equal, {});
+	}
+}
+
+export default Component;
\ No newline at end of file
diff --git a/test/js/samples/import-meta/input.svelte b/test/js/samples/import-meta/input.svelte
new file mode 100644
index 0000000000..a5ce32dd77
--- /dev/null
+++ b/test/js/samples/import-meta/input.svelte
@@ -0,0 +1,6 @@
+<script>
+	const url = import.meta.url;
+</script>
+
+{url}
+{import.meta.url}
diff --git a/test/runtime/samples/numeric-seperator/_config.js b/test/runtime/samples/numeric-seperator/_config.js
new file mode 100644
index 0000000000..bc6d7c04f3
--- /dev/null
+++ b/test/runtime/samples/numeric-seperator/_config.js
@@ -0,0 +1,3 @@
+export default {
+	html: `2048 2048`
+};
diff --git a/test/runtime/samples/numeric-seperator/main.svelte b/test/runtime/samples/numeric-seperator/main.svelte
new file mode 100644
index 0000000000..e491b8a107
--- /dev/null
+++ b/test/runtime/samples/numeric-seperator/main.svelte
@@ -0,0 +1,5 @@
+<script>
+	const num = 2_048;
+</script>
+
+{num} {2_048}
\ No newline at end of file
diff --git a/test/validator/samples/import-meta/errors.json b/test/validator/samples/import-meta/errors.json
new file mode 100644
index 0000000000..0637a088a0
--- /dev/null
+++ b/test/validator/samples/import-meta/errors.json
@@ -0,0 +1 @@
+[]
\ No newline at end of file
diff --git a/test/validator/samples/import-meta/input.svelte b/test/validator/samples/import-meta/input.svelte
new file mode 100644
index 0000000000..a5ce32dd77
--- /dev/null
+++ b/test/validator/samples/import-meta/input.svelte
@@ -0,0 +1,6 @@
+<script>
+	const url = import.meta.url;
+</script>
+
+{url}
+{import.meta.url}

From b3f54bd2cffa3c9f146b62f10565a5d98f068a84 Mon Sep 17 00:00:00 2001
From: Tan Li Hau <tanhauhau@users.noreply.github.com>
Date: Sat, 19 Sep 2020 00:17:36 +0800
Subject: [PATCH 30/32] fix store direct property assignment (#5416)

---
 CHANGELOG.md                                  |  1 +
 src/compiler/compile/render_dom/invalidate.ts |  2 +-
 .../_config.js                                | 32 +++++++++++++++++++
 .../main.svelte                               | 24 ++++++++++++++
 4 files changed, 58 insertions(+), 1 deletion(-)
 create mode 100644 test/runtime/samples/store-assignment-updates-property/_config.js
 create mode 100644 test/runtime/samples/store-assignment-updates-property/main.svelte

diff --git a/CHANGELOG.md b/CHANGELOG.md
index 8d953183bf..d74279c2e0 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -3,6 +3,7 @@
 ## Unreleased
 
 * Support `_` as numeric separator ([#5407](https://github.com/sveltejs/svelte/issues/5407))
+* Fix assignments to properties on store values ([#5412](https://github.com/sveltejs/svelte/issues/5412))
 * Support `import.meta` in template expressions ([#5422](https://github.com/sveltejs/svelte/issues/5422))
 
 ## 3.25.1
diff --git a/src/compiler/compile/render_dom/invalidate.ts b/src/compiler/compile/render_dom/invalidate.ts
index c7d9759ccd..b045db079f 100644
--- a/src/compiler/compile/render_dom/invalidate.ts
+++ b/src/compiler/compile/render_dom/invalidate.ts
@@ -62,7 +62,7 @@ export function invalidate(renderer: Renderer, scope: Scope, node: Node, names:
 			}
 
 			let invalidate = is_store_value
-				? x`@set_store_value(${head.name.slice(1)}, ${node}, ${extra_args})`
+				? x`@set_store_value(${head.name.slice(1)}, ${node}, ${head.name})`
 				: !main_execution_context
 					? x`$$invalidate(${renderer.context_lookup.get(head.name).index}, ${node}, ${extra_args})`
 					: extra_args.length
diff --git a/test/runtime/samples/store-assignment-updates-property/_config.js b/test/runtime/samples/store-assignment-updates-property/_config.js
new file mode 100644
index 0000000000..65df38f9e4
--- /dev/null
+++ b/test/runtime/samples/store-assignment-updates-property/_config.js
@@ -0,0 +1,32 @@
+export default {
+	html: `
+		<p>a: {"foo":3,"bar":2}</p>
+		<p>b: {"foo":3}</p>
+		<button></button>
+		<button></button>
+	`,
+	skip_if_ssr: true,
+
+	async test({ assert, component, target, window }) {
+		const [btn1, btn2] = target.querySelectorAll('button');
+		const click = new window.MouseEvent('click');
+
+		await btn1.dispatchEvent(click);
+
+		assert.htmlEqual(target.innerHTML, `
+			<p>a: {"foo":4,"bar":2}</p>
+			<p>b: {"foo":4,"baz":0}</p>
+			<button></button>
+			<button></button>
+		`);
+
+		await btn2.dispatchEvent(click);
+
+		assert.htmlEqual(target.innerHTML, `
+			<p>a: {"foo":5,"bar":2}</p>
+			<p>b: {"foo":5,"qux":0}</p>
+			<button></button>
+			<button></button>
+		`);
+	}
+};
\ No newline at end of file
diff --git a/test/runtime/samples/store-assignment-updates-property/main.svelte b/test/runtime/samples/store-assignment-updates-property/main.svelte
new file mode 100644
index 0000000000..c3196a278c
--- /dev/null
+++ b/test/runtime/samples/store-assignment-updates-property/main.svelte
@@ -0,0 +1,24 @@
+<script>
+	import { writable } from '../../../../store';
+
+	const a = writable({ foo: 1, bar: 2 });
+	$a.foo = 3;
+
+	const b = writable({ foo: 1, bar: 2 });
+	$b = { foo: 3 };
+
+	function update() {
+		$a.foo = $a.foo + 1;
+		$b = { foo: $b.foo + 1, qux: 0 };
+	}
+</script>
+
+<p>a: {JSON.stringify($a)}</p>
+<p>b: {JSON.stringify($b)}</p>
+
+<button on:click={() => {
+	$a.foo = $a.foo + 1;
+	$b = { foo: $b.foo + 1, baz: 0 };
+}} />
+
+<button on:click={update} />
\ No newline at end of file

From 254096d32041ba5bb7dd80bebffba25f31936f8a Mon Sep 17 00:00:00 2001
From: Tan Li Hau <tanhauhau@users.noreply.github.com>
Date: Sat, 19 Sep 2020 00:50:18 +0800
Subject: [PATCH 31/32] support methods as actions (#5398)

---
 CHANGELOG.md                                     |  1 +
 .../render_dom/wrappers/shared/add_actions.ts    | 16 ++++++++++++----
 test/runtime/samples/action-object/_config.js    |  8 ++++++++
 test/runtime/samples/action-object/main.svelte   | 10 ++++++++++
 4 files changed, 31 insertions(+), 4 deletions(-)
 create mode 100644 test/runtime/samples/action-object/_config.js
 create mode 100644 test/runtime/samples/action-object/main.svelte

diff --git a/CHANGELOG.md b/CHANGELOG.md
index d74279c2e0..8ed9b5a3c2 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -2,6 +2,7 @@
 
 ## Unreleased
 
+* Support `use:obj.method` as actions ([#3935](https://github.com/sveltejs/svelte/issues/3935))
 * Support `_` as numeric separator ([#5407](https://github.com/sveltejs/svelte/issues/5407))
 * Fix assignments to properties on store values ([#5412](https://github.com/sveltejs/svelte/issues/5412))
 * Support `import.meta` in template expressions ([#5422](https://github.com/sveltejs/svelte/issues/5422))
diff --git a/src/compiler/compile/render_dom/wrappers/shared/add_actions.ts b/src/compiler/compile/render_dom/wrappers/shared/add_actions.ts
index 3d8c4fbbc0..6ca7de9a22 100644
--- a/src/compiler/compile/render_dom/wrappers/shared/add_actions.ts
+++ b/src/compiler/compile/render_dom/wrappers/shared/add_actions.ts
@@ -26,11 +26,19 @@ export function add_action(block: Block, target: string, action: Action) {
 
 	block.add_variable(id);
 
-	const fn = block.renderer.reference(action.name);
+	const [obj, ...properties] = action.name.split('.');
 
-	block.event_listeners.push(
-		x`@action_destroyer(${id} = ${fn}.call(null, ${target}, ${snippet}))`
-	);
+	const fn = block.renderer.reference(obj);
+
+	if (properties.length) {
+		block.event_listeners.push(
+			x`@action_destroyer(${id} = ${fn}.${properties.join('.')}(${target}, ${snippet}))`
+		);
+	} else {
+		block.event_listeners.push(
+			x`@action_destroyer(${id} = ${fn}.call(null, ${target}, ${snippet}))`
+		);
+	}
 
 	if (dependencies && dependencies.length > 0) {
 		let condition = x`${id} && @is_function(${id}.update)`;
diff --git a/test/runtime/samples/action-object/_config.js b/test/runtime/samples/action-object/_config.js
new file mode 100644
index 0000000000..7fdc11af2b
--- /dev/null
+++ b/test/runtime/samples/action-object/_config.js
@@ -0,0 +1,8 @@
+export default {
+	html: `
+		<button>action</button>
+	`,
+	async test({ assert, target, window }) {
+		assert.equal(target.querySelector('button').foo, 'bar1337');
+	}
+};
diff --git a/test/runtime/samples/action-object/main.svelte b/test/runtime/samples/action-object/main.svelte
new file mode 100644
index 0000000000..f15e319e6f
--- /dev/null
+++ b/test/runtime/samples/action-object/main.svelte
@@ -0,0 +1,10 @@
+<script>
+	const obj = {
+		foo : "bar",
+		action(element, { leet }) {
+			element.foo = this.foo + leet;
+		},
+	}
+</script>
+
+<button use:obj.action={{ leet: 1337 }}>action</button>
\ No newline at end of file

From b5b02f85619fa06ad33275b96fe9b516df96a008 Mon Sep 17 00:00:00 2001
From: Tan Li Hau <tanhauhau@users.noreply.github.com>
Date: Sat, 19 Sep 2020 01:53:19 +0800
Subject: [PATCH 32/32] whitelist [open] attribute selector for <details>
 (#5425)

---
 CHANGELOG.md                                           |  1 +
 src/compiler/compile/css/Selector.ts                   | 10 +++++++++-
 .../attribute-selector-details-open/expected.css       |  1 +
 .../attribute-selector-details-open/input.svelte       |  7 +++++++
 4 files changed, 18 insertions(+), 1 deletion(-)
 create mode 100644 test/css/samples/attribute-selector-details-open/expected.css
 create mode 100644 test/css/samples/attribute-selector-details-open/input.svelte

diff --git a/CHANGELOG.md b/CHANGELOG.md
index 8ed9b5a3c2..ad33840527 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -5,6 +5,7 @@
 * Support `use:obj.method` as actions ([#3935](https://github.com/sveltejs/svelte/issues/3935))
 * Support `_` as numeric separator ([#5407](https://github.com/sveltejs/svelte/issues/5407))
 * Fix assignments to properties on store values ([#5412](https://github.com/sveltejs/svelte/issues/5412))
+* Add special style scoping handling of `[open]` selectors on `<details>` elements ([#5421](https://github.com/sveltejs/svelte/issues/5421))
 * Support `import.meta` in template expressions ([#5422](https://github.com/sveltejs/svelte/issues/5422))
 
 ## 3.25.1
diff --git a/src/compiler/compile/css/Selector.ts b/src/compiler/compile/css/Selector.ts
index d18a7e7ba6..c45cda57e9 100644
--- a/src/compiler/compile/css/Selector.ts
+++ b/src/compiler/compile/css/Selector.ts
@@ -11,6 +11,10 @@ enum BlockAppliesToNode {
 	UnknownSelectorType
 }
 
+const whitelist_attribute_selector = new Map([
+	['details', new Set(['open'])]
+]);
+
 export default class Selector {
 	node: CssNode;
 	stylesheet: Stylesheet;
@@ -232,7 +236,11 @@ function block_might_apply_to_node(block: Block, node: Element): BlockAppliesToN
 		}
 
 		else if (selector.type === 'AttributeSelector') {
-			if (!attribute_matches(node, selector.name.name, selector.value && unquote(selector.value), selector.matcher, selector.flags)) return BlockAppliesToNode.NotPossible;
+			if (
+				!(whitelist_attribute_selector.has(node.name.toLowerCase()) && whitelist_attribute_selector.get(node.name.toLowerCase()).has(selector.name.name.toLowerCase())) &&
+				!attribute_matches(node, selector.name.name, selector.value && unquote(selector.value), selector.matcher, selector.flags)) {
+				return BlockAppliesToNode.NotPossible;
+			}
 		}
 
 		else if (selector.type === 'TypeSelector') {
diff --git a/test/css/samples/attribute-selector-details-open/expected.css b/test/css/samples/attribute-selector-details-open/expected.css
new file mode 100644
index 0000000000..20543c5c8e
--- /dev/null
+++ b/test/css/samples/attribute-selector-details-open/expected.css
@@ -0,0 +1 @@
+details[open].svelte-xyz{color:red}
\ No newline at end of file
diff --git a/test/css/samples/attribute-selector-details-open/input.svelte b/test/css/samples/attribute-selector-details-open/input.svelte
new file mode 100644
index 0000000000..f8cb70eff7
--- /dev/null
+++ b/test/css/samples/attribute-selector-details-open/input.svelte
@@ -0,0 +1,7 @@
+<details>Hello</details>
+
+<style>
+	details[open] {
+		color: red;
+	}
+</style>