All files / src/reactivity map.js

100% Statements 183/183
100% Branches 30/30
100% Functions 14/14
100% Lines 177/177

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 1782x 2x 2x 2x 2x 2x 2x 2x 2x 2x 2x 2x 2x 2x 12x 12x 12x 12x 12x 12x 12x 12x 12x 12x 12x 12x 12x 2x 2x 2x 8x 8x 8x 8x 10x 10x 8x 2x 2x 12x 12x 12x 12x 12x 12x 5x 5x 5x 17x 17x 5x 5x 5x 12x 12x 12x 24x 24x 12x 12x 12x 8x 8x 8x 3x 3x 3x 3x 3x 3x 5x 5x 5x 5x 12x 12x 12x 12x 12x 12x 1x 1x 1x 1x 1x 12x 12x 12x 8x 8x 8x 2x 2x 2x 2x 2x 2x 6x 6x 6x 12x 12x 12x 12x 12x 12x 18x 18x 18x 18x 14x 14x 14x 18x 4x 4x 18x 18x 18x 12x 12x 12x 8x 8x 8x 8x 7x 7x 7x 7x 7x 7x 1x 1x 1x 12x 12x 3x 3x 3x 3x 3x 8x 8x 3x 3x 3x 3x 3x 12x 12x 2x 2x 2x 12x 12x 6x 6x 6x 12x 12x 22x 22x 22x 22x 22x 22x 22x 12x 12x 20x 20x 12x 12x 17x 17x 12x  
import { DEV } from 'esm-env';
import { source, set } from '../internal/client/reactivity/sources.js';
import { get } from '../internal/client/runtime.js';
import { UNINITIALIZED } from '../constants.js';
import { map } from './utils.js';
import { INSPECT_SYMBOL } from '../internal/client/constants.js';
 
var inited = false;
 
/**
 * @template K
 * @template V
 */
export class ReactiveMap extends Map {
	/** @type {Map<K, import('#client').Source<V>>} */
	#sources = new Map();
	#version = source(0);
	#size = source(0);
 
	/**
	 * @param {Iterable<readonly [K, V]> | null | undefined} [value]
	 */
	constructor(value) {
		super();
 
		if (DEV) {
			if (!inited) {
				inited = true;
				// @ts-ignore
				ReactiveMap.prototype[INSPECT_SYMBOL] = function () {
					// changes could either introduced by
					// - modifying the value, or
					// - add / remove entries to the map
					for (const [, source] of this.#sources) {
						get(source);
					}
					get(this.#size);
				};
			}
		}
 
		// If the value is invalid then the native exception will fire here
		if (DEV) new Map(value);
 
		if (value) {
			var sources = this.#sources;
 
			for (var [key, v] of value) {
				sources.set(key, source(v));
			}
 
			this.#size.v = sources.size;
		}
	}
 
	#increment_version() {
		set(this.#version, this.#version.v + 1);
	}
 
	/** @param {K} key */
	has(key) {
		var s = this.#sources.get(key);
 
		if (s === undefined) {
			// We should always track the version in case
			// the Set ever gets this value in the future.
			get(this.#version);
 
			return false;
		}
 
		get(s);
		return true;
	}
 
	/**
	 * @param {(value: V, key: K, map: Map<K, V>) => void} callbackfn
	 * @param {any} [this_arg]
	 */
	forEach(callbackfn, this_arg) {
		get(this.#version);
 
		var bound_callbackfn = callbackfn.bind(this_arg);
		this.#sources.forEach((s, key) => bound_callbackfn(s.v, key, this));
	}
 
	/** @param {K} key */
	get(key) {
		var s = this.#sources.get(key);
 
		if (s === undefined) {
			// We should always track the version in case
			// the Set ever gets this value in the future.
			get(this.#version);
 
			return undefined;
		}
 
		return get(s);
	}
 
	/**
	 * @param {K} key
	 * @param {V} value
	 * */
	set(key, value) {
		var sources = this.#sources;
		var s = sources.get(key);
 
		if (s === undefined) {
			sources.set(key, source(value));
			set(this.#size, sources.size);
			this.#increment_version();
		} else {
			set(s, value);
		}
 
		return this;
	}
 
	/** @param {K} key */
	delete(key) {
		var sources = this.#sources;
		var s = sources.get(key);
 
		if (s !== undefined) {
			var removed = sources.delete(key);
			set(this.#size, sources.size);
			set(s, /** @type {V} */ (UNINITIALIZED));
			this.#increment_version();
			return removed;
		}
 
		return false;
	}
 
	clear() {
		var sources = this.#sources;
 
		if (sources.size !== 0) {
			set(this.#size, 0);
			for (var s of sources.values()) {
				set(s, /** @type {V} */ (UNINITIALIZED));
			}
			this.#increment_version();
		}
 
		sources.clear();
	}
 
	keys() {
		get(this.#version);
		return this.#sources.keys();
	}
 
	values() {
		get(this.#version);
		return map(this.#sources.values(), get, 'Map Iterator');
	}
 
	entries() {
		get(this.#version);
		return map(
			this.#sources.entries(),
			([key, source]) => /** @type {[K, V]} */ ([key, get(source)]),
			'Map Iterator'
		);
	}
 
	[Symbol.iterator]() {
		return this.entries();
	}
 
	get size() {
		return get(this.#size);
	}
}