All files / src/legacy legacy-client.js

71.59% Statements 184/257
96.87% Branches 31/32
78.94% Functions 15/19
70.68% Lines 176/249

Press n or j to go to the next uncovered block, b, p or k for the previous block.

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 2662x 2x 2x 2x 2x             2x 2x 2x 2x 2x 2x 2x 2x 2x 2x 2x 2x 2x 2x 2x 2x 2x 2x 2x 2x 2x 2407x 2407x 2407x 2x 2x 2x 2x 2x 2x 2x 2x 2x 2x 2x 2x 2x 2x 2x                       2x 2407x 2407x 2407x 2407x 2407x 2407x 2407x 2407x 2407x 2407x 2407x 2407x 2407x 2407x 2407x 2407x 2407x 2407x 2407x 2407x 5351x 5351x 5351x 2407x 2407x 2407x 2407x 2407x 2407x 2407x 2407x 2407x 8425x 2407x 2407x 96x 96x 2407x 2407x 32x 32x 32x 2407x 2407x 2407x 2407x 2407x 2407x 2407x 2407x 2407x 2407x 2407x 2407x 2407x 2395x 2395x 2395x 2395x 2395x 2407x 3160x 3032x 3032x 957x 3032x 3032x 3032x 2324x 3032x 3032x 3032x 3032x 2395x 2395x 20x 2395x 2395x 2395x 2395x 2395x 2395x 2407x 2407x 2407x 20x 20x 2407x 2407x 2407x 2407x 2407x 2407x 2407x 18x 18x 18x 18x 18x 18x   18x 18x 2407x 2407x 2395x 2395x 2407x 2x 2x 2x 2x 2x 2x 2x 2x 2x                     2x 2x 2x 2x 2x 2x 2x 2x                                                               2x 2x 2x 2x 2x 2x                                         2x                      
/** @import { ComponentConstructorOptions, ComponentType, SvelteComponent, Component } from 'svelte' */
import { DIRTY, MAYBE_DIRTY } from '../internal/client/constants.js';
import { user_pre_effect } from '../internal/client/reactivity/effects.js';
import { mutable_source, set } from '../internal/client/reactivity/sources.js';
import { hydrate, mount, unmount } from '../internal/client/render.js';
import {
	active_effect,
	component_context,
	flush_sync,
	get,
	set_signal_status
} from '../internal/client/runtime.js';
import { lifecycle_outside_component } from '../internal/shared/errors.js';
import { define_property, is_array } from '../internal/shared/utils.js';
import * as w from '../internal/client/warnings.js';
 
/**
 * Takes the same options as a Svelte 4 component and the component function and returns a Svelte 4 compatible component.
 *
 * @deprecated Use this only as a temporary solution to migrate your imperative component code to Svelte 5.
 *
 * @template {Record<string, any>} Props
 * @template {Record<string, any>} Exports
 * @template {Record<string, any>} Events
 * @template {Record<string, any>} Slots
 *
 * @param {ComponentConstructorOptions<Props> & {
 * 	component: ComponentType<SvelteComponent<Props, Events, Slots>> | Component<Props>;
 * }} options
 * @returns {SvelteComponent<Props, Events, Slots> & Exports}
 */
export function createClassComponent(options) {
	// @ts-expect-error $$prop_def etc are not actually defined
	return new Svelte4Component(options);
}
 
/**
 * Takes the component function and returns a Svelte 4 compatible component constructor.
 *
 * @deprecated Use this only as a temporary solution to migrate your imperative component code to Svelte 5.
 *
 * @template {Record<string, any>} Props
 * @template {Record<string, any>} Exports
 * @template {Record<string, any>} Events
 * @template {Record<string, any>} Slots
 *
 * @param {SvelteComponent<Props, Events, Slots> | Component<Props>} component
 * @returns {ComponentType<SvelteComponent<Props, Events, Slots> & Exports>}
 */
export function asClassComponent(component) {
	// @ts-expect-error $$prop_def etc are not actually defined
	return class extends Svelte4Component {
		/** @param {any} options */
		constructor(options) {
			super({
				component,
				...options
			});
		}
	};
}
 
class Svelte4Component {
	/** @type {any} */
	#events;
 
	/** @type {Record<string, any>} */
	#instance;
 
	/**
	 * @param {ComponentConstructorOptions & {
	 *  component: any;
	 * }} options
	 */
	constructor(options) {
		var sources = new Map();
 
		/**
		 * @param {string | symbol} key
		 * @param {unknown} value
		 */
		var add_source = (key, value) => {
			var s = mutable_source(value);
			sources.set(key, s);
			return s;
		};
 
		// Replicate coarse-grained props through a proxy that has a version source for
		// each property, which is increment on updates to the property itself. Do not
		// use our $state proxy because that one has fine-grained reactivity.
		const props = new Proxy(
			{ ...(options.props || {}), $$events: {} },
			{
				get(target, prop) {
					return get(sources.get(prop) ?? add_source(prop, Reflect.get(target, prop)));
				},
				has(target, prop) {
					get(sources.get(prop) ?? add_source(prop, Reflect.get(target, prop)));
					return Reflect.has(target, prop);
				},
				set(target, prop, value) {
					set(sources.get(prop) ?? add_source(prop, value), value);
					return Reflect.set(target, prop, value);
				}
			}
		);
 
		this.#instance = (options.hydrate ? hydrate : mount)(options.component, {
			target: options.target,
			props,
			context: options.context,
			intro: options.intro ?? false,
			recover: options.recover
		});
 
		// We don't flush_sync for custom element wrappers or if the user doesn't want it
		if (!options?.props?.$$host || options.sync === false) {
			flush_sync();
		}
 
		this.#events = props.$$events;
 
		for (const key of Object.keys(this.#instance)) {
			if (key === '$set' || key === '$destroy' || key === '$on') continue;
			define_property(this, key, {
				get() {
					return this.#instance[key];
				},
				/** @param {any} value */
				set(value) {
					this.#instance[key] = value;
				},
				enumerable: true
			});
		}
 
		this.#instance.$set = /** @param {Record<string, any>} next */ (next) => {
			Object.assign(props, next);
		};
 
		this.#instance.$destroy = () => {
			unmount(this.#instance);
		};
	}
 
	/** @param {Record<string, any>} props */
	$set(props) {
		this.#instance.$set(props);
	}
 
	/**
	 * @param {string} event
	 * @param {(...args: any[]) => any} callback
	 * @returns {any}
	 */
	$on(event, callback) {
		this.#events[event] = this.#events[event] || [];
 
		/** @param {any[]} args */
		const cb = (...args) => callback.call(this, ...args);
		this.#events[event].push(cb);
		return () => {
			this.#events[event] = this.#events[event].filter(/** @param {any} fn */ (fn) => fn !== cb);
		};
	}
 
	$destroy() {
		this.#instance.$destroy();
	}
}
 
/**
 * Runs the given function once immediately on the server, and works like `$effect.pre` on the client.
 *
 * @deprecated Use this only as a temporary solution to migrate your component code to Svelte 5.
 * @param {() => void | (() => void)} fn
 * @returns {void}
 */
export function run(fn) {
	user_pre_effect(() => {
		fn();
		var effect = /** @type {import('#client').Effect} */ (active_effect);
		// If the effect is immediately made dirty again, mark it as maybe dirty to emulate legacy behaviour
		if ((effect.f & DIRTY) !== 0) {
			w.legacy_recursive_reactive_block();
			set_signal_status(effect, MAYBE_DIRTY);
		}
	});
}
 
/**
 * Function to mimic the multiple listeners available in svelte 4
 * @deprecated
 * @param {EventListener[]} handlers
 * @returns {EventListener}
 */
export function handlers(...handlers) {
	return function (event) {
		const { stopImmediatePropagation } = event;
		let stopped = false;

		event.stopImmediatePropagation = () => {
			stopped = true;
			stopImmediatePropagation.call(event);
		};

		const errors = [];

		for (const handler of handlers) {
			try {
				// @ts-expect-error `this` is not typed
				handler?.call(this, event);
			} catch (e) {
				errors.push(e);
			}

			if (stopped) {
				break;
			}
		}

		for (let error of errors) {
			queueMicrotask(() => {
				throw error;
			});
		}
	};
}
 
/**
 * Function to create a `bubble` function that mimic the behavior of `on:click` without handler available in svelte 4.
 * @deprecated Use this only as a temporary solution to migrate your automatically delegated events in Svelte 5.
 */
export function createBubbler() {
	const active_component_context = component_context;
	if (active_component_context === null) {
		lifecycle_outside_component('createBubbler');
	}

	return (/**@type {string}*/ type) => (/**@type {Event}*/ event) => {
		const events = /** @type {Record<string, Function | Function[]>} */ (
			active_component_context.s.$$events
		)?.[/** @type {any} */ (type)];

		if (events) {
			const callbacks = is_array(events) ? events.slice() : [events];
			for (const fn of callbacks) {
				fn.call(active_component_context.x, event);
			}
			return !event.defaultPrevented;
		}
		return true;
	};
}
 
export {
	once,
	preventDefault,
	self,
	stopImmediatePropagation,
	stopPropagation,
	trusted,
	passive,
	nonpassive
} from '../internal/client/dom/legacy/event-modifiers.js';