RegularElement.js — svelte Source File

Source Code

/** @import { AST } from '#compiler' */
/** @import { Context } from '../types' */
import { is_mathml, is_svg, is_void } from '../../../../utils.js';
import {
	is_tag_valid_with_ancestor,
	is_tag_valid_with_parent
} from '../../../../html-tree-validation.js';
import * as e from '../../../errors.js';
import * as w from '../../../warnings.js';
import {
	create_attribute,
	is_custom_element_node,
	is_customizable_select_element
} from '../../nodes.js';
import { regex_starts_with_newline } from '../../patterns.js';
import { check_element } from './shared/a11y/index.js';
import { validate_element } from './shared/element.js';
import { mark_subtree_dynamic } from './shared/fragment.js';

/**
 * @param {AST.RegularElement} node
 * @param {Context} context
 */
export function RegularElement(node, context) {
	validate_element(node, context);
	check_element(node, context);

	node.metadata.path = [...context.path];
	context.state.analysis.elements.push(node);

	// Special case: Move the children of <textarea> into a value attribute if they are dynamic
	if (node.name === 'textarea' && node.fragment.nodes.length > 0) {
		for (const attribute of node.attributes) {
			if (attribute.type === 'Attribute' && attribute.name === 'value') {
				e.textarea_invalid_content(node);
			}
		}

		if (node.fragment.nodes.length > 1 || node.fragment.nodes[0].type !== 'Text') {
			const first = node.fragment.nodes[0];
			if (first.type === 'Text') {
				// The leading newline character needs to be stripped because of a qirk:
				// It is ignored by browsers if the tag and its contents are set through
				// innerHTML, but we're now setting it through the value property at which
				// point it is _not_ ignored, so we need to strip it ourselves.
				// see https://html.spec.whatwg.org/multipage/syntax.html#element-restrictions
				// see https://html.spec.whatwg.org/multipage/grouping-content.html#the-pre-element
				first.data = first.data.replace(regex_starts_with_newline, '');
				first.raw = first.raw.replace(regex_starts_with_newline, '');
			}

			node.attributes.push(
				create_attribute(
					'value',
					null,
					-1,
					-1,
					// @ts-ignore
					node.fragment.nodes
				)
// ... (151 more lines)