Merge branch 'master' of https://github.com/sveltejs/svelte

* 'master' of https://github.com/sveltejs/svelte: (137 commits)
  -> v3.19.2
  fix lazy code breaks in build
  fit bitmask overflow initial dirty value in 'if' blocks (sveltejs#4507)
  add dev runtime warning for unknown slot names (sveltejs#4501)
  fix render fallback slot content due to whitespace (sveltejs#4500)
  docs: describe falsy and nullish attribute behavior (sveltejs#4498)
  in spread, distinguish never-updating and always-updating props (sveltejs#4487)
  chore: more specific typings, and add README note about Yarn (sveltejs#4483)
  update changelog
  check for unknown props even if component doesn't have writable props (sveltejs#4454)
  Bump codecov from 3.5.0 to 3.6.5 (sveltejs#4433)
  fix bitmask overflow for slot (sveltejs#4485)
  mark module variables as mutated or reassigned (sveltejs#4469)
  docs: referenced_from_script var value (sveltejs#4486)
  docs: clarify default prop behaviour (sveltejs#4460)
  site: turn fancybutton into custombutton (sveltejs#4476)
  update changelog
  exclude global variables from $capture_state (sveltejs#4475)
  -> v3.19.1
  don't treat $$-names as stores during invalidation (sveltejs#4453)
  ...

Author: hontas

.eslintignore

@@ -4,6 +4,9 @@ _output
 test/*/samples/*/output.js
 node_modules
 
+# automatically generated
+internal_exports.ts
+
 # output files
 animate/*.js
 esing/*.js

.github/workflows/ci.yml

@@ -23,3 +23,9 @@ jobs:
     - uses: actions/checkout@v1
     - uses: actions/setup-node@v1
     - run: 'npm i && npm run lint'
+  Unit:
+    runs-on: ubuntu-latest
+    steps:
+    - uses: actions/checkout@v1
+    - uses: actions/setup-node@v1
+    - run: 'npm i && npm run test:unit'

.gitignore

@@ -33,5 +33,8 @@ _output
 /site/static/svelte-app.json
 /site/static/contributors.jpg
 /site/static/workers
+/site/static/organisations
 /site/scripts/svelte-app
+/site/scripts/community
 /site/src/routes/_contributors.js
+/site/src/routes/_components/WhosUsingSvelte.svelte

.prettierrc

@@ -1,5 +1,100 @@
 # Svelte changelog
 
+## 3.19.2
+
+* In `dev` mode, display a runtime warning when a component is passed an unexpected slot ([#1020](https://github.com/sveltejs/svelte/issues/1020), [#1447](https://github.com/sveltejs/svelte/issues/1447))
+* In `vars` array, correctly indicate whether `module` variables are `mutated` or `reassigned` ([#3215](https://github.com/sveltejs/svelte/issues/3215))
+* Fix spread props not updating in certain situations ([#3521](https://github.com/sveltejs/svelte/issues/3521), [#4480](https://github.com/sveltejs/svelte/issues/4480))
+* Use the fallback content for slots if they are passed only whitespace ([#4092](https://github.com/sveltejs/svelte/issues/4092))
+* Fix bitmask overflow for `{#if}` blocks ([#4263](https://github.com/sveltejs/svelte/issues/4263))
+* In `dev` mode, check for unknown props even if the component has no writable props ([#4323](https://github.com/sveltejs/svelte/issues/4323))
+* Exclude global variables from `$capture_state` ([#4463](https://github.com/sveltejs/svelte/issues/4463))
+* Fix bitmask overflow for slots ([#4481](https://github.com/sveltejs/svelte/issues/4481))
+
+## 3.19.1
+
+* Do not treat modifications to `$$props` as updates to a store called `$props` ([#4368](https://github.com/sveltejs/svelte/issues/4368))
+* Deconflict `value` parameter name used in contextual bindings ([#4445](https://github.com/sveltejs/svelte/issues/4445))
+* Fix dev mode validation of `{#each}` blocks using strings ([#4450](https://github.com/sveltejs/svelte/issues/4450))
+
+## 3.19.0
+
+* Fix indirect bindings involving elements with spreads ([#3680](https://github.com/sveltejs/svelte/issues/3680))
+* `$capture_state`/`$inject_state` now act on the component's entire state, rather than its props ([#3822](https://github.com/sveltejs/svelte/pull/3822))
+* Warn when using `<Foo/>` and `Foo` is dynamic ([#4331](https://github.com/sveltejs/svelte/issues/4331))
+* Display compilation warnings in `svelte/register` in dev mode ([#4364](https://github.com/sveltejs/svelte/issues/4364))
+* Fix unneeded updating of keyed each blocks ([#4373](https://github.com/sveltejs/svelte/issues/4373))
+* Throw runtime error in dev mode for non-array-like values in `{#each}` blocks ([#4408](https://github.com/sveltejs/svelte/issues/4408))
+
+## 3.18.2
+
+* Fix binding to module-level variables ([#4086](https://github.com/sveltejs/svelte/issues/4086))
+* Improve parsing error messages when there is a pending unclosed tag ([#4131](https://github.com/sveltejs/svelte/issues/4131))
+* Disallow attribute/prop names from matching two-way-bound names or `{shorthand}` attribute/prop names ([#4325](https://github.com/sveltejs/svelte/issues/4325))
+* Improve performance of `flush()` by not using `.shift()` ([#4356](https://github.com/sveltejs/svelte/pull/4356))
+* Permit reserved keywords as destructuring keys in `{#each}` ([#4372](https://github.com/sveltejs/svelte/issues/4372))
+* Disallow reserved keywords in `{expressions}` ([#4372](https://github.com/sveltejs/svelte/issues/4372))
+* Fix code generation error with precedence of arrow functions ([#4384](https://github.com/sveltejs/svelte/issues/4384))
+* Fix event handlers that are dynamic via reactive declarations or stores ([#4388](https://github.com/sveltejs/svelte/issues/4388))
+* Fix invalidation in expressions like `++foo.bar` ([#4393](https://github.com/sveltejs/svelte/issues/4393))
+
+## 3.18.1
+
+* Fix code generation error with adjacent inline and block comments ([#4312](https://github.com/sveltejs/svelte/issues/4312))
+* Fix detection of unused CSS selectors that begin with a `:global()` but contain a scoped portion ([#4314](https://github.com/sveltejs/svelte/issues/4314))
+
+## 3.18.0
+
+* Fix infinite loop when instantiating another component during `onMount` ([#3218](https://github.com/sveltejs/svelte/issues/3218))
+* Make autosubscribing to a nullish store a no-op ([#2181](https://github.com/sveltejs/svelte/issues/2181))
+
+## 3.17.3
+
+* Fix updating a `<slot>` inside an `{#if}` or other block ([#4292](https://github.com/sveltejs/svelte/issues/4292))
+* Fix using RxJS observables in `derived` stores ([#4298](https://github.com/sveltejs/svelte/issues/4298))
+* Add dev mode check to disallow duplicate keys in a keyed `{#each}` ([#4301](https://github.com/sveltejs/svelte/issues/4301))
+* Fix hydration of `<title>` when starting from SSR-generated code with `hydratable: true` ([#4310](https://github.com/sveltejs/svelte/issues/4310))
+
+## 3.17.2
+
+* Fix removing attributes during hydration ([#1733](https://github.com/sveltejs/svelte/issues/1733))
+* Disallow two-way binding to a variable declared by an `{#await}` block ([#4012](https://github.com/sveltejs/svelte/issues/4012))
+* Allow access to `let:` variables in sibling attributes on slot root ([#4173](https://github.com/sveltejs/svelte/issues/4173))
+* Fix `~=` and class selector matching against values separated by any whitespace characters ([#4242](https://github.com/sveltejs/svelte/issues/4242))
+* Fix code generation for `await`ed expressions that need parentheses ([#4267](https://github.com/sveltejs/svelte/issues/4267))
+* Preserve JavaScript comments from the original component source where possible ([#4268](https://github.com/sveltejs/svelte/issues/4268))
+* Add some more known globals ([#4276](https://github.com/sveltejs/svelte/pull/4276))
+* Correctly apply event modifiers to `<svelte:body>` events ([#4278](https://github.com/sveltejs/svelte/issues/4278))
+
+## 3.17.1
+
+* Only attach SSR mode markers to a component's `<head>` elements when compiling with `hydratable: true` ([#4258](https://github.com/sveltejs/svelte/issues/4258))
+
+## 3.17.0
+
+* Remove old `<head>` elements during hydration so they aren't duplicated ([#1607](https://github.com/sveltejs/svelte/issues/1607))
+* Prevent text input cursor jumping in Safari with one-way binding ([#3449](https://github.com/sveltejs/svelte/issues/3449))
+* Expose compiler version in dev events ([#4047](https://github.com/sveltejs/svelte/issues/4047))
+* Don't run actions before their element is in the document ([#4166](https://github.com/sveltejs/svelte/issues/4166))
+* Fix reactive assignments with destructuring and stores where the destructured value should be undefined ([#4170](https://github.com/sveltejs/svelte/issues/4170))
+* Fix hydrating `{:else}` in `{#each}` ([#4202](https://github.com/sveltejs/svelte/issues/4202))
+* Do not automatically declare variables in reactive declarations when assigning to a member expression ([#4212](https://github.com/sveltejs/svelte/issues/4212))
+* Fix stringifying of attributes in SSR mode when there are spread attributes ([#4240](https://github.com/sveltejs/svelte/issues/4240))
+* Only render one `<title>` in SSR mode when multiple components provide one ([#4250](https://github.com/sveltejs/svelte/pull/4250))
+
+## 3.16.7
+
+* Also apply actions in the order they're given along with other directives ([#2446](https://github.com/sveltejs/svelte/issues/2446), [#4156](https://github.com/sveltejs/svelte/pull/4156))
+* Check whether a dynamic event handler is a function before calling it ([#4090](https://github.com/sveltejs/svelte/issues/4090))
+* Correctly mark event handlers as dynamic when they involve an expression used in a `bind:` elsewhere ([#4155](https://github.com/sveltejs/svelte/pull/4155))
+
+## 3.16.6
+
+* Fix CSS specificity bug when encapsulating styles ([#1277](https://github.com/sveltejs/svelte/issues/1277))
+* Apply directives in the order they're given ([#2446](https://github.com/sveltejs/svelte/issues/2446))
+* Fix destructuring in `let:` directives ([#2751](https://github.com/sveltejs/svelte/issues/2751))
+* Preserve whitespace around `<tspan>`s in `<svg>`s ([#3998](https://github.com/sveltejs/svelte/issues/3998))
+
 ## 3.16.5
 
 * Better fix for cascading invalidations and fix some regressions ([#4098](https://github.com/sveltejs/svelte/issues/4098), [#4114](https://github.com/sveltejs/svelte/issues/4114), [#4120](https://github.com/sveltejs/svelte/issues/4120))

CHANGELOG.md

@@ -1,4 +1,4 @@
-Copyright (c) 2016-19 [these people](https://github.com/sveltejs/svelte/graphs/contributors)
+Copyright (c) 2016-20 [these people](https://github.com/sveltejs/svelte/graphs/contributors)
 
 Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the "Software"), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions:
 

LICENSE

@@ -7,15 +7,6 @@
     <img src="https://img.shields.io/npm/v/svelte.svg" alt="npm version">
   </a>
 
-  <a href="https://packagephobia.now.sh/result?p=svelte">
-    <img src="https://packagephobia.now.sh/badge?p=svelte" alt="install size">
-  </a>
-
-  <a href="https://github.com/sveltejs/svelte/actions">
-    <img src="https://github.com/sveltejs/svelte/workflows/CI/badge.svg?branch=master"
-         alt="build status">
-  </a>
-
   <a href="https://github.com/sveltejs/svelte/blob/master/LICENSE">
     <img src="https://img.shields.io/npm/l/svelte.svg" alt="license">
   </a>
@@ -41,6 +32,8 @@ cd svelte
 npm install
 ```
 
+> Do not use Yarn to install the dependencies, as the specific package versions in `package-lock.json` are used to build and test Svelte.
+
 > Many tests depend on newlines being preserved as `<LF>`. On Windows, you can ensure this by cloning with:
 > ```bash
 > git -c core.autocrlf=false clone https://github.com/sveltejs/svelte.git