Commit updated Javascript packages
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195
build/javascript/node_modules/preact/compat/src/render.js
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195
build/javascript/node_modules/preact/compat/src/render.js
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import {
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render as preactRender,
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hydrate as preactHydrate,
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options,
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toChildArray,
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Component
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} from 'preact';
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export const REACT_ELEMENT_TYPE =
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(typeof Symbol != 'undefined' && Symbol.for && Symbol.for('react.element')) ||
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0xeac7;
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const CAMEL_PROPS = /^(?:accent|alignment|arabic|baseline|cap|clip(?!PathU)|color|fill|flood|font|glyph(?!R)|horiz|marker(?!H|W|U)|overline|paint|stop|strikethrough|stroke|text(?!L)|underline|unicode|units|v|vector|vert|word|writing|x(?!C))[A-Z]/;
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// Input types for which onchange should not be converted to oninput.
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// type="file|checkbox|radio", plus "range" in IE11.
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// (IE11 doesn't support Symbol, which we use here to turn `rad` into `ra` which matches "range")
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const ONCHANGE_INPUT_TYPES =
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typeof Symbol != 'undefined' ? /fil|che|rad/i : /fil|che|ra/i;
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// Some libraries like `react-virtualized` explicitly check for this.
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Component.prototype.isReactComponent = {};
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// `UNSAFE_*` lifecycle hooks
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// Preact only ever invokes the unprefixed methods.
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// Here we provide a base "fallback" implementation that calls any defined UNSAFE_ prefixed method.
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// - If a component defines its own `componentDidMount()` (including via defineProperty), use that.
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// - If a component defines `UNSAFE_componentDidMount()`, `componentDidMount` is the alias getter/setter.
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// - If anything assigns to an `UNSAFE_*` property, the assignment is forwarded to the unprefixed property.
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// See https://github.com/preactjs/preact/issues/1941
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[
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'componentWillMount',
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'componentWillReceiveProps',
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'componentWillUpdate'
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].forEach(key => {
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Object.defineProperty(Component.prototype, key, {
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configurable: true,
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get() {
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return this['UNSAFE_' + key];
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},
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set(v) {
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Object.defineProperty(this, key, {
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configurable: true,
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writable: true,
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value: v
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});
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}
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});
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});
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/**
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* Proxy render() since React returns a Component reference.
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* @param {import('./internal').VNode} vnode VNode tree to render
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* @param {import('./internal').PreactElement} parent DOM node to render vnode tree into
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* @param {() => void} [callback] Optional callback that will be called after rendering
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* @returns {import('./internal').Component | null} The root component reference or null
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*/
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export function render(vnode, parent, callback) {
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// React destroys any existing DOM nodes, see #1727
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// ...but only on the first render, see #1828
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if (parent._children == null) {
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parent.textContent = '';
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}
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preactRender(vnode, parent);
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if (typeof callback == 'function') callback();
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return vnode ? vnode._component : null;
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}
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export function hydrate(vnode, parent, callback) {
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preactHydrate(vnode, parent);
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if (typeof callback == 'function') callback();
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return vnode ? vnode._component : null;
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}
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let oldEventHook = options.event;
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options.event = e => {
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if (oldEventHook) e = oldEventHook(e);
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e.persist = empty;
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e.isPropagationStopped = isPropagationStopped;
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e.isDefaultPrevented = isDefaultPrevented;
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return (e.nativeEvent = e);
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};
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function empty() {}
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function isPropagationStopped() {
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return this.cancelBubble;
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}
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function isDefaultPrevented() {
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return this.defaultPrevented;
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}
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let classNameDescriptor = {
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configurable: true,
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get() {
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return this.class;
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}
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};
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let oldVNodeHook = options.vnode;
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options.vnode = vnode => {
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let type = vnode.type;
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let props = vnode.props;
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let normalizedProps = props;
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// only normalize props on Element nodes
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if (typeof type === 'string') {
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normalizedProps = {};
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for (let i in props) {
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let value = props[i];
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if (i === 'defaultValue' && 'value' in props && props.value == null) {
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// `defaultValue` is treated as a fallback `value` when a value prop is present but null/undefined.
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// `defaultValue` for Elements with no value prop is the same as the DOM defaultValue property.
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i = 'value';
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} else if (i === 'download' && value === true) {
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// Calling `setAttribute` with a truthy value will lead to it being
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// passed as a stringified value, e.g. `download="true"`. React
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// converts it to an empty string instead, otherwise the attribute
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// value will be used as the file name and the file will be called
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// "true" upon downloading it.
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value = '';
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} else if (/ondoubleclick/i.test(i)) {
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i = 'ondblclick';
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} else if (
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/^onchange(textarea|input)/i.test(i + type) &&
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!ONCHANGE_INPUT_TYPES.test(props.type)
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) {
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i = 'oninput';
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} else if (/^on(Ani|Tra|Tou|BeforeInp)/.test(i)) {
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i = i.toLowerCase();
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} else if (CAMEL_PROPS.test(i)) {
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i = i.replace(/[A-Z0-9]/, '-$&').toLowerCase();
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} else if (value === null) {
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value = undefined;
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}
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normalizedProps[i] = value;
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}
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// Add support for array select values: <select multiple value={[]} />
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if (
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type == 'select' &&
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normalizedProps.multiple &&
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Array.isArray(normalizedProps.value)
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) {
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// forEach() always returns undefined, which we abuse here to unset the value prop.
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normalizedProps.value = toChildArray(props.children).forEach(child => {
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child.props.selected =
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normalizedProps.value.indexOf(child.props.value) != -1;
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});
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}
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vnode.props = normalizedProps;
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}
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if (type && props.class != props.className) {
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classNameDescriptor.enumerable = 'className' in props;
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if (props.className != null) normalizedProps.class = props.className;
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Object.defineProperty(normalizedProps, 'className', classNameDescriptor);
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}
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vnode.$$typeof = REACT_ELEMENT_TYPE;
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if (oldVNodeHook) oldVNodeHook(vnode);
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};
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// Only needed for react-relay
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let currentComponent;
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const oldBeforeRender = options._render;
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options._render = function(vnode) {
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if (oldBeforeRender) {
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oldBeforeRender(vnode);
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}
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currentComponent = vnode._component;
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};
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// This is a very very private internal function for React it
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// is used to sort-of do runtime dependency injection. So far
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// only `react-relay` makes use of it. It uses it to read the
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// context value.
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export const __SECRET_INTERNALS_DO_NOT_USE_OR_YOU_WILL_BE_FIRED = {
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ReactCurrentDispatcher: {
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current: {
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readContext(context) {
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return currentComponent._globalContext[context._id].props.value;
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}
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}
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}
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};
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