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index.js — svelte Source File

Architecture documentation for index.js, a javascript file in the svelte codebase. 7 imports, 5 dependents.

File javascript SharedInternal BitFlags 7 imports 5 dependents 5 functions

Entity Profile

Dependency Diagram

graph LR
  b874f390_a6ee_7d84_7151_b2b77f0388d5["index.js"]
  cb946435_ce66_d1e8_6bee_287bdb07e7c5["utils.js"]
  b874f390_a6ee_7d84_7151_b2b77f0388d5 --> cb946435_ce66_d1e8_6bee_287bdb07e7c5
  fa007f2b_f437_c5ef_5c2d_ea8b5902500f["noop"]
  b874f390_a6ee_7d84_7151_b2b77f0388d5 --> fa007f2b_f437_c5ef_5c2d_ea8b5902500f
  ff67bcc0_629f_eab4_221d_71e6bc15e31e["run_all"]
  b874f390_a6ee_7d84_7151_b2b77f0388d5 --> ff67bcc0_629f_eab4_221d_71e6bc15e31e
  9068d26c_037d_ff15_43b8_824380424345["equality.js"]
  b874f390_a6ee_7d84_7151_b2b77f0388d5 --> 9068d26c_037d_ff15_43b8_824380424345
  b3727276_e6f9_12a7_bfa7_3faf14f08373["safe_not_equal"]
  b874f390_a6ee_7d84_7151_b2b77f0388d5 --> b3727276_e6f9_12a7_bfa7_3faf14f08373
  dacfcaf1_66cb_9fe3_083b_4fee2b4eb64f["utils.js"]
  b874f390_a6ee_7d84_7151_b2b77f0388d5 --> dacfcaf1_66cb_9fe3_083b_4fee2b4eb64f
  257e3ffe_958d_4447_c42b_d1cd05172fdb["subscribe_to_store"]
  b874f390_a6ee_7d84_7151_b2b77f0388d5 --> 257e3ffe_958d_4447_c42b_d1cd05172fdb
  49e6453b_f889_68d3_168f_19a644745ce8["store.js"]
  49e6453b_f889_68d3_168f_19a644745ce8 --> b874f390_a6ee_7d84_7151_b2b77f0388d5
  5230511f_b608_2c86_cb6b_11014fdf94b5["spring.js"]
  5230511f_b608_2c86_cb6b_11014fdf94b5 --> b874f390_a6ee_7d84_7151_b2b77f0388d5
  99a316ef_52a9_1ecb_3a20_489761af28ad["tweened.js"]
  99a316ef_52a9_1ecb_3a20_489761af28ad --> b874f390_a6ee_7d84_7151_b2b77f0388d5
  063b7444_1ece_6350_07c7_3c77919f3844["index-client.js"]
  063b7444_1ece_6350_07c7_3c77919f3844 --> b874f390_a6ee_7d84_7151_b2b77f0388d5
  2bdbc2e5_a0d9_6f47_66f9_fca27e2bedfd["index-server.js"]
  2bdbc2e5_a0d9_6f47_66f9_fca27e2bedfd --> b874f390_a6ee_7d84_7151_b2b77f0388d5
  style b874f390_a6ee_7d84_7151_b2b77f0388d5 fill:#6366f1,stroke:#818cf8,color:#fff

Relationship Graph

Source Code

/** @import { Readable, StartStopNotifier, Subscriber, Unsubscriber, Updater, Writable } from '../public.js' */
/** @import { Stores, StoresValues, SubscribeInvalidateTuple } from '../private.js' */
import { noop, run_all } from '../../internal/shared/utils.js';
import { safe_not_equal } from '../../internal/client/reactivity/equality.js';
import { subscribe_to_store } from '../utils.js';

/**
 * @type {Array<SubscribeInvalidateTuple<any> | any>}
 */
const subscriber_queue = [];

/**
 * Creates a `Readable` store that allows reading by subscription.
 *
 * @template T
 * @param {T} [value] initial value
 * @param {StartStopNotifier<T>} [start]
 * @returns {Readable<T>}
 */
export function readable(value, start) {
	return {
		subscribe: writable(value, start).subscribe
	};
}

/**
 * Create a `Writable` store that allows both updating and reading by subscription.
 *
 * @template T
 * @param {T} [value] initial value
 * @param {StartStopNotifier<T>} [start]
 * @returns {Writable<T>}
 */
export function writable(value, start = noop) {
	/** @type {Unsubscriber | null} */
	let stop = null;

	/** @type {Set<SubscribeInvalidateTuple<T>>} */
	const subscribers = new Set();

	/**
	 * @param {T} new_value
	 * @returns {void}
	 */
	function set(new_value) {
		if (safe_not_equal(value, new_value)) {
			value = new_value;
			if (stop) {
				// store is ready
				const run_queue = !subscriber_queue.length;
				for (const subscriber of subscribers) {
					subscriber[1]();
					subscriber_queue.push(subscriber, value);
				}
				if (run_queue) {
					for (let i = 0; i < subscriber_queue.length; i += 2) {
						subscriber_queue[i][0](subscriber_queue[i + 1]);
					}
					subscriber_queue.length = 0;
				}
// ... (150 more lines)

Domain

Subdomains

Functions

Dependencies

Imported By

Source

Frequently Asked Questions

What does index.js do?
index.js is a source file in the svelte codebase, written in javascript. It belongs to the SharedInternal domain, BitFlags subdomain.
What functions are defined in index.js?
index.js defines 5 function(s): derived, get, readable, readonly, writable.
What does index.js depend on?
index.js imports 7 module(s): equality.js, noop, run_all, safe_not_equal, subscribe_to_store, utils.js, utils.js.
What files import index.js?
index.js is imported by 5 file(s): index-client.js, index-server.js, spring.js, store.js, tweened.js.
Where is index.js in the architecture?
index.js is located at packages/svelte/src/store/shared/index.js (domain: SharedInternal, subdomain: BitFlags, directory: packages/svelte/src/store/shared).

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