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export const EACH_INDEX_REACTIVE = 1 << 1;
export const EACH_KEYED = 1 << 2;
/** See EachBlock interface metadata.is_controlled for an explanation what this is */
export const EACH_IS_CONTROLLED = 1 << 3;
export const EACH_IS_ANIMATED = 1 << 4;
export const EACH_IS_STRICT_EQUALS = 1 << 6;
export const PROPS_IS_IMMUTABLE = 1;
export const PROPS_IS_RUNES = 1 << 1;
export const PROPS_IS_UPDATED = 1 << 2;
export const PROPS_IS_LAZY_INITIAL = 1 << 3;
export const TRANSITION_IN = 1;
export const TRANSITION_OUT = 1 << 1;
export const TRANSITION_GLOBAL = 1 << 2;
export const TEMPLATE_FRAGMENT = 1;
export const TEMPLATE_USE_IMPORT_NODE = 1 << 1;
export const HYDRATION_START = '[';
export const HYDRATION_END = ']';
export const HYDRATION_END_ELSE = `${HYDRATION_END}!`; // used to indicate that an `{:else}...` block was rendered
export const HYDRATION_ERROR = {};
export const ELEMENT_IS_NAMESPACED = 1;
export const ELEMENT_PRESERVE_ATTRIBUTE_CASE = 1 << 1;
export const UNINITIALIZED = Symbol();
/** List of elements that require raw contents and should not have SSR comments put in them */
export const RawTextElements = ['textarea', 'script', 'style', 'title'];
/** List of Element events that will be delegated */
export const DelegatedEvents = [
'beforeinput',
'click',
'dblclick',
'contextmenu',
'focusin',
'focusout',
// 'input', This conflicts with bind:input
'keydown',
'keyup',
'mousedown',
'mousemove',
'mouseout',
'mouseover',
'mouseup',
'pointerdown',
'pointermove',
'pointerout',
'pointerover',
'pointerup',
'touchend',
'touchmove',
'touchstart'
];
/** List of Element events that will be delegated and are passive */
export const PassiveDelegatedEvents = ['touchstart', 'touchmove', 'touchend'];
/**
* @type {Record<string, string>}
* List of attribute names that should be aliased to their property names
* because they behave differently between setting them as an attribute and
* setting them as a property.
*/
export const AttributeAliases = {
// no `class: 'className'` because we handle that separately
formnovalidate: 'formNoValidate',
ismap: 'isMap',
nomodule: 'noModule',
playsinline: 'playsInline',
readonly: 'readOnly'
};
/**
* Attributes that are boolean, i.e. they are present or not present.
*/
export const DOMBooleanAttributes = [
'allowfullscreen',
'async',
'autofocus',
'autoplay',
'checked',
'controls',
'default',
'disabled',
'formnovalidate',
'hidden',
'indeterminate',
'ismap',
'loop',
'multiple',
'muted',
'nomodule',
'novalidate',
'open',
'playsinline',
'readonly',
'required',
'reversed',
'seamless',
'selected',
'webkitdirectory'
];
export const namespace_svg = 'http://www.w3.org/2000/svg';
export const namespace_mathml = 'http://www.w3.org/1998/Math/MathML';
// while `input` is also an interactive element, it is never moved by the browser, so we don't need to check for it
export const interactive_elements = new Set([
'a',
'button',
'iframe',
'embed',
'select',
'textarea'
]);
export const disallowed_paragraph_contents = [
'address',
'article',
'aside',
'blockquote',
'details',
'div',
'dl',
'fieldset',
'figcapture',
'figure',
'footer',
'form',
'h1',
'h2',
'h3',
'h4',
'h5',
'h6',
'header',
'hr',
'menu',
'nav',
'ol',
'pre',
'section',
'table',
'ul',
'p'
];
// https://html.spec.whatwg.org/multipage/syntax.html#generate-implied-end-tags
const implied_end_tags = ['dd', 'dt', 'li', 'option', 'optgroup', 'p', 'rp', 'rt'];
/**
* @param {string} tag
* @param {string} parent_tag
* @returns {boolean}
*/
export function is_tag_valid_with_parent(tag, parent_tag) {
// First, let's check if we're in an unusual parsing mode...
switch (parent_tag) {
// https://html.spec.whatwg.org/multipage/syntax.html#parsing-main-inselect
case 'select':
return (
tag === 'option' ||
tag === 'optgroup' ||
tag === '#text' ||
tag === 'hr' ||
tag === 'script' ||
tag === 'template'
);
case 'optgroup':
return tag === 'option' || tag === '#text';
// Strictly speaking, seeing an <option> doesn't mean we're in a <select>
// but
case 'option':
return tag === '#text';
// https://html.spec.whatwg.org/multipage/syntax.html#parsing-main-intd
// https://html.spec.whatwg.org/multipage/syntax.html#parsing-main-incaption
// No special behavior since these rules fall back to "in body" mode for
// all except special table nodes which cause bad parsing behavior anyway.
// https://html.spec.whatwg.org/multipage/syntax.html#parsing-main-intr
case 'tr':
return (
tag === 'th' || tag === 'td' || tag === 'style' || tag === 'script' || tag === 'template'
);
// https://html.spec.whatwg.org/multipage/syntax.html#parsing-main-intbody
case 'tbody':
case 'thead':
case 'tfoot':
return tag === 'tr' || tag === 'style' || tag === 'script' || tag === 'template';
// https://html.spec.whatwg.org/multipage/syntax.html#parsing-main-incolgroup
case 'colgroup':
return tag === 'col' || tag === 'template';
// https://html.spec.whatwg.org/multipage/syntax.html#parsing-main-intable
case 'table':
return (
tag === 'caption' ||
tag === 'colgroup' ||
tag === 'tbody' ||
tag === 'tfoot' ||
tag === 'thead' ||
tag === 'style' ||
tag === 'script' ||
tag === 'template'
);
// https://html.spec.whatwg.org/multipage/syntax.html#parsing-main-inhead
case 'head':
return (
tag === 'base' ||
tag === 'basefont' ||
tag === 'bgsound' ||
tag === 'link' ||
tag === 'meta' ||
tag === 'title' ||
tag === 'noscript' ||
tag === 'noframes' ||
tag === 'style' ||
tag === 'script' ||
tag === 'template'
);
// https://html.spec.whatwg.org/multipage/semantics.html#the-html-element
case 'html':
return tag === 'head' || tag === 'body' || tag === 'frameset';
case 'frameset':
return tag === 'frame';
case '#document':
return tag === 'html';
}
// Probably in the "in body" parsing mode, so we outlaw only tag combos
// where the parsing rules cause implicit opens or closes to be added.
// https://html.spec.whatwg.org/multipage/syntax.html#parsing-main-inbody
switch (tag) {
case 'h1':
case 'h2':
case 'h3':
case 'h4':
case 'h5':
case 'h6':
return (
parent_tag !== 'h1' &&
parent_tag !== 'h2' &&
parent_tag !== 'h3' &&
parent_tag !== 'h4' &&
parent_tag !== 'h5' &&
parent_tag !== 'h6'
);
case 'rp':
case 'rt':
return implied_end_tags.indexOf(parent_tag) === -1;
case 'body':
case 'caption':
case 'col':
case 'colgroup':
case 'frameset':
case 'frame':
case 'head':
case 'html':
case 'tbody':
case 'td':
case 'tfoot':
case 'th':
case 'thead':
case 'tr':
// These tags are only valid with a few parents that have special child
// parsing rules -- if we're down here, then none of those matched and
// so we allow it only if we don't know what the parent is, as all other
// cases are invalid.
return parent_tag == null;
}
return true;
}
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