render.js — svelte Source File

Source Code

/** @import { ComponentContext, Effect, EffectNodes, TemplateNode } from '#client' */
/** @import { Component, ComponentType, SvelteComponent, MountOptions } from '../../index.js' */
import { DEV } from 'esm-env';
import {
	clear_text_content,
	create_text,
	get_first_child,
	get_next_sibling,
	init_operations
} from './dom/operations.js';
import { HYDRATION_END, HYDRATION_ERROR, HYDRATION_START } from '../../constants.js';
import { active_effect } from './runtime.js';
import { push, pop, component_context } from './context.js';
import { component_root } from './reactivity/effects.js';
import { hydrate_node, hydrating, set_hydrate_node, set_hydrating } from './dom/hydration.js';
import { array_from } from '../shared/utils.js';
import {
	all_registered_events,
	handle_event_propagation,
	root_event_handles
} from './dom/elements/events.js';
import * as w from './warnings.js';
import * as e from './errors.js';
import { assign_nodes } from './dom/template.js';
import { is_passive_event } from '../../utils.js';
import { COMMENT_NODE, STATE_SYMBOL } from './constants.js';
import { boundary } from './dom/blocks/boundary.js';

/**
 * This is normally true — block effects should run their intro transitions —
 * but is false during hydration (unless `options.intro` is `true`) and
 * when creating the children of a `<svelte:element>` that just changed tag
 */
export let should_intro = true;

/** @param {boolean} value */
export function set_should_intro(value) {
	should_intro = value;
}

/**
 * @param {Element} text
 * @param {string} value
 * @returns {void}
 */
export function set_text(text, value) {
	// For objects, we apply string coercion (which might make things like $state array references in the template reactive) before diffing
	var str = value == null ? '' : typeof value === 'object' ? value + '' : value;
	// @ts-expect-error
	if (str !== (text.__t ??= text.nodeValue)) {
		// @ts-expect-error
		text.__t = str;
		text.nodeValue = str + '';
	}
}

/**
 * Mounts a component to the given target and returns the exports and potentially the props (if compiled with `accessors: true`) of the component.
 * Transitions will play during the initial render unless the `intro` option is set to `false`.
 *
// ... (256 more lines)