Merge ceviche repo 🎉

.editorconfig

@@ -7,9 +7,15 @@ charset = utf-8
 trim_trailing_whitespace = true
 insert_final_newline = true
 
-[{*.json,.*rc,*.yml}]
+[{package.json,.*rc,*.yml}]
 indent_style = space
 indent_size = 2
 
 [*.md]
 trim_trailing_whitespace = false
+
+# Uglify (or some other tool) always rewrites this file
+# without a final newline on build, so disabling that
+# editorconfig feature specifically for this file
+[mangle.json]
+insert_final_newline = false

.eslintignore

@@ -1 +1,2 @@
+test/fixtures
 test/ts/

.gitignore

@@ -1,18 +1,9 @@
-/node_modules
-/npm-debug.log
 .DS_Store
-/dist
-/_dev
-/coverage
+node_modules
+npm-debug.log
+dist
 package-lock.json
-/test/ts/**/*.js
-
-# Additional bundles
-/devtools.js
-/devtools.js.map
-/debug.js
-/debug.js.map
-
-# Editor and IDE configuration
-.vscode/
-.idea/
+.vscode
+.idea
+test/ts/**/*.js
+coverage

CHANGELOG.md

@@ -0,0 +1,53 @@
+# Changelog
+
+## Differences from Preact
+
+### Major changes
+
+1. The VNode shape has changed
+    1. `attributes` has been renamed to `props`
+    2. `nodeName` is now `type`
+    3. `props.children`
+        1. The children of a VNode are no longer guaranteed to be a flat array. It could be `undefined`
+           or it could be a nested array of children. use newly exported helper `toChildArray` to
+           always get an array back. It takes `props.children` as an argument and always returns an array
+        2. A Component with no children will not have a `children` prop defined on `props`. Preact v8
+           guaranteed an empty list would always be there. That can no longer be relied on.
+        3. `children` is only stored as a property on the `props` property (i.e. `props.children`).
+           `vnode.children` no longer exists
+        4. `null`, `undefined`, `true`, and `false` are not removed from the children array stored as
+		      props. Use the newly exported helper `toChildArray` to flatten and remove non-renderables.
+2. `h` has been renamed to `createElement`. To continue to use `h`, alias `createElement` to `h` in
+   your import statement to h: `import { createElement as h } from 'preact';`.
+3. The root `render` function (the one you import from `preact`) has changed:
+    1. `render` no longer returns the newly created DOM element. Its return type is now `void`
+    2. `render` no longer supports a third argument to hydrate the DOM. Use the new `hydrate`
+       function to hydrate a server rendered DOM tree
+    3. Calling `render` multiple times on the same element merges the trees together. It no longer
+       just appends to the DOM
+    4. Preact no longer guarantees elements not created by Preact will preserved
+4. `setState` no longer modifies `this.state` synchronously
+5. Falsy attributes values are no longer removed from the DOM. For some attributes (e.g. `spellcheck`)
+   the values `false` and `''` have different meaning so being able to render `false` is important
+6. The Component constructor no longer initializes state to an empty object. If state has not been
+   previously set, it will be set to an empty object the first time the component is rendered, after
+   the constructor has been called
+7. We no longer have a default export. Use `import * as preact from "preact"` for similar behavior.
+8. `options.debounceRendering` has been moved to `Component.debounce`
+
+### Minor changes
+
+1. `addEventListener` and `removeEventListener` are called every time an event handler is changed
+2. `render(null, container)` no longer renders an empty text node but instead renders nothing
+3. We longer support a synchronous `Component.debounce` (formerly `options.debounceRendering`).
+   The value of `Component.debounce` must asynchronously invoke the passed in callback. It is
+	important that contributors to Preact can consistently reason about what calls to `setState`, etc.
+	do, and when their effects will be applied. See the links below for some further reading on designing
+	asynchronous APIs.
+		* [Designing APIs for Asynchrony](https://blog.izs.me/2013/08/designing-apis-for-asynchrony)
+		* [Callbacks synchronous and asynchronous](https://blog.ometer.com/2011/07/24/callbacks-synchronous-and-asynchronous/)
+
+### For contributors
+
+1. `scratch.innerHTML = ''` no longer is an effective technique to clear the DOM during testing. If you think you need to
+   clear the DOM during a test, consider breaking your tests into multiple individual tests to cover your feature.

compat/mangle.json

@@ -0,0 +1,23 @@
+{
+  "help": {
+    "what is this file?": "It controls protected/private property mangling so that minified builds have consistent property names.",
+    "why are there duplicate minified properties?": "Most properties are only used on one type of objects, so they can have the same name since they will never collide. Doing this reduces size."
+  },
+  "props": {
+    "cname": 6,
+    "props": {
+      "$_dirty": "__d",
+      "$_nextState": "__s",
+      "$_renderCallbacks": "__h",
+      "$_vnode": "__v",
+      "$_children": "__k",
+      "$_dom": "__e",
+      "$_component": "__c",
+      "$_constructor": "__c",
+      "$_prevVNode": "__t",
+      "$__html": "__html",
+      "$_ancestorComponent": "__a",
+      "$_processingException": "__p"
+    }
+  }
+}

compat/package.json

@@ -0,0 +1,18 @@
+{
+  "name": "preact-compat",
+  "amdName": "preactCompat",
+  "version": "4.0.0",
+  "private": true,
+  "description": "A React compatibility layer for Preact",
+  "main": "dist/compat.js",
+  "module": "dist/compat.mjs",
+  "umd:main": "dist/compat.umd.js",
+  "source": "src/index.js",
+  "license": "MIT",
+  "mangle": {
+    "regex": "^_"
+  },
+  "peerDependencies": {
+    "preact": "10.0.0-alpha.0"
+  }
+}

compat/server.js

@@ -0,0 +1,9 @@
+/* eslint-disable */
+var renderToString = dep(require('preact-render-to-string'));
+
+function dep(obj) { return obj['default'] || obj; }
+
+module.exports = {
+	renderToString: renderToString,
+	renderToStaticMarkup: renderToString
+};