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 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 273 274 275 276 277 278 279 280 281 282 283 284 285 286 287 288 289 290 291 292 293 294 295 296 297 298 299 300 301 302 303 304 305 306 307 308 309 310 311 312 313 314 315 316 317 318 319 320 321 322 323 324 325 326 327 328 329 330 331 332 333 334 335 336 337 338 339 340 341 342 343 344 345 346 347 348 349 350 351 352 353 354 355 356 357 358 359 360 361 362 363 364 365 366 367 368 369 370 371 372 373 374 375 376 | 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 2x 2x 2x 2x 2x 2x 2x 2x 10752x 10752x 10752x 10752x 6096x 10752x 6096x 6096x 53x 53x 53x 53x 53x 53x 53x 53x 53x 53x 53x 53x 53x 53x 53x 6043x 6043x 6043x 6096x 5978x 5978x 5978x 5978x 5978x 5978x 5978x 5978x 5978x 5978x 5978x 5978x 5978x 5978x 5978x 5978x 5978x 5978x 5978x 5978x 5978x 5978x 5978x 5978x 5978x 2339x 2339x 5978x 5978x 5978x 5978x 5978x 5978x 6096x 4721x 4721x 4721x 2x 2x 2x 2x 2x 2x 2x 2x 2x 2x 2x 2x 2x 2x 2x 2x 2x 2x 2x 93x 93x 93x 2x 2x 2x 2x 2x 2x 2x 2x 2x 2x 16273x 724x 724x 15549x 15549x 15549x 15549x 15549x 15549x 16273x 7553x 7553x 7553x 15549x 16273x 14951x 14951x 14951x 598x 598x 598x 598x 598x 598x 2x 2x 2x 3817x 3817x 1859x 1859x 1859x 1859x 1859x 1582x 1582x 1859x 3817x 3817x 2x 2x 2x 1344x 826x 826x 518x 518x 518x 518x 518x 518x 1330x 132x 1344x 500x 114x 114x 114x 114x 114x 500x 500x 22x 22x 500x 496x 2x 2x 2x 760x 760x 760x 760x 760x 760x 760x 760x 72x 72x 72x 72x 760x 760x 760x 760x 760x 760x 760x 760x 760x 760x 760x 760x 760x 760x 760x 66x 66x 760x 760x 760x 760x 760x 760x 93x 93x 93x 93x 93x 66x 66x 66x 66x 66x 66x 93x 93x 760x 760x 2x 2x 2x 373x 373x 373x 373x 373x 373x 2x 2x 2x 2x 2x 2x 2x 2x 2x 2x 2x 1350678x 700x 700x 700x 700x 700x 1349978x 1349978x 2x 2x 2x 2x 2x 2x 544x 544x | import { DEV } from 'esm-env';
import {
get,
batch_inspect,
current_component_context,
untrack,
current_effect
} from './runtime.js';
import {
array_prototype,
define_property,
get_descriptor,
get_descriptors,
get_prototype_of,
is_array,
is_frozen,
object_prototype
} from './utils.js';
import { check_ownership, widen_ownership } from './dev/ownership.js';
import { mutable_source, source, set } from './reactivity/sources.js';
import { STATE_FROZEN_SYMBOL, STATE_SYMBOL } from './constants.js';
import { UNINITIALIZED } from '../../constants.js';
import * as e from './errors.js';
/**
* @template T
* @param {T} value
* @param {boolean} [immutable]
* @param {import('#client').ProxyMetadata | null} [parent]
* @param {import('#client').Source<T>} [prev] dev mode only
* @returns {import('#client').ProxyStateObject<T> | T}
*/
export function proxy(value, immutable = true, parent = null, prev) {
if (
typeof value === 'object' &&
value != null &&
!is_frozen(value) &&
!(STATE_FROZEN_SYMBOL in value)
) {
// If we have an existing proxy, return it...
if (STATE_SYMBOL in value) {
const metadata = /** @type {import('#client').ProxyMetadata<T>} */ (value[STATE_SYMBOL]);
// ...unless the proxy belonged to a different object, because
// someone copied the state symbol using `Reflect.ownKeys(...)`
if (metadata.t === value || metadata.p === value) {
if (DEV) {
// Since original parent relationship gets lost, we need to copy over ancestor owners
// into current metadata. The object might still exist on both, so we need to widen it.
widen_ownership(metadata, metadata);
metadata.parent = parent;
}
return metadata.p;
}
}
const prototype = get_prototype_of(value);
if (prototype === object_prototype || prototype === array_prototype) {
const proxy = new Proxy(value, state_proxy_handler);
define_property(value, STATE_SYMBOL, {
value: /** @type {import('#client').ProxyMetadata} */ ({
s: new Map(),
v: source(0),
a: is_array(value),
i: immutable,
p: proxy,
t: value
}),
writable: true,
enumerable: false
});
if (DEV) {
// @ts-expect-error
value[STATE_SYMBOL].parent = parent;
if (prev) {
// Reuse owners from previous state; necessary because reassignment is not guaranteed to have correct component context.
// If no previous proxy exists we play it safe and assume ownerless state
// @ts-expect-error
const prev_owners = prev?.v?.[STATE_SYMBOL]?.owners;
// @ts-expect-error
value[STATE_SYMBOL].owners = prev_owners ? new Set(prev_owners) : null;
} else {
// @ts-expect-error
value[STATE_SYMBOL].owners =
parent === null
? current_component_context !== null
? new Set([current_component_context.function])
: null
: new Set();
}
}
return proxy;
}
}
return value;
}
/**
* @template {import('#client').ProxyStateObject} T
* @param {T} value
* @param {Map<T, Record<string | symbol, any>>} already_unwrapped
* @returns {Record<string | symbol, any>}
*/
function unwrap(value, already_unwrapped) {
if (typeof value === 'object' && value != null && STATE_SYMBOL in value) {
const unwrapped = already_unwrapped.get(value);
if (unwrapped !== undefined) {
return unwrapped;
}
if (is_array(value)) {
/** @type {Record<string | symbol, any>} */
const array = [];
already_unwrapped.set(value, array);
for (const element of value) {
array.push(unwrap(element, already_unwrapped));
}
return array;
} else {
/** @type {Record<string | symbol, any>} */
const obj = {};
const keys = Reflect.ownKeys(value);
const descriptors = get_descriptors(value);
already_unwrapped.set(value, obj);
for (const key of keys) {
if (key === STATE_SYMBOL) continue;
if (descriptors[key].get) {
define_property(obj, key, descriptors[key]);
} else {
/** @type {T} */
const property = value[key];
obj[key] = unwrap(property, already_unwrapped);
}
}
return obj;
}
}
return value;
}
/**
* @template T
* @param {T} value
* @returns {T}
*/
export function snapshot(value) {
return /** @type {T} */ (
unwrap(/** @type {import('#client').ProxyStateObject} */ (value), new Map())
);
}
/**
* @param {import('#client').Source<number>} signal
* @param {1 | -1} [d]
*/
function update_version(signal, d = 1) {
set(signal, signal.v + d);
}
/** @type {ProxyHandler<import('#client').ProxyStateObject<any>>} */
const state_proxy_handler = {
defineProperty(target, prop, descriptor) {
if (descriptor.value) {
/** @type {import('#client').ProxyMetadata} */
const metadata = target[STATE_SYMBOL];
const s = metadata.s.get(prop);
if (s !== undefined) set(s, proxy(descriptor.value, metadata.i, metadata));
}
return Reflect.defineProperty(target, prop, descriptor);
},
deleteProperty(target, prop) {
/** @type {import('#client').ProxyMetadata} */
const metadata = target[STATE_SYMBOL];
const s = metadata.s.get(prop);
const is_array = metadata.a;
const boolean = delete target[prop];
// If we have mutated an array directly, and the deletion
// was successful we will also need to update the length
// before updating the field or the version. This is to
// ensure any effects observing length can execute before
// effects that listen to the fields – otherwise they will
// operate an an index that no longer exists.
if (is_array && boolean) {
const ls = metadata.s.get('length');
const length = target.length - 1;
if (ls !== undefined && ls.v !== length) {
set(ls, length);
}
}
if (s !== undefined) set(s, UNINITIALIZED);
if (boolean) {
update_version(metadata.v);
}
return boolean;
},
get(target, prop, receiver) {
if (prop === STATE_SYMBOL) {
return Reflect.get(target, STATE_SYMBOL);
}
/** @type {import('#client').ProxyMetadata} */
const metadata = target[STATE_SYMBOL];
let s = metadata.s.get(prop);
// create a source, but only if it's an own property and not a prototype property
if (s === undefined && (!(prop in target) || get_descriptor(target, prop)?.writable)) {
s = (metadata.i ? source : mutable_source)(proxy(target[prop], metadata.i, metadata));
metadata.s.set(prop, s);
}
if (s !== undefined) {
const value = get(s);
return value === UNINITIALIZED ? undefined : value;
}
if (DEV) {
if (typeof target[prop] === 'function' && prop !== Symbol.iterator) {
return batch_inspect(target, prop, receiver);
}
}
return Reflect.get(target, prop, receiver);
},
getOwnPropertyDescriptor(target, prop) {
const descriptor = Reflect.getOwnPropertyDescriptor(target, prop);
if (descriptor && 'value' in descriptor) {
/** @type {import('#client').ProxyMetadata} */
const metadata = target[STATE_SYMBOL];
const s = metadata.s.get(prop);
if (s) {
descriptor.value = get(s);
}
}
return descriptor;
},
has(target, prop) {
if (prop === STATE_SYMBOL) {
return true;
}
/** @type {import('#client').ProxyMetadata} */
const metadata = target[STATE_SYMBOL];
const has = Reflect.has(target, prop);
let s = metadata.s.get(prop);
if (
s !== undefined ||
(current_effect !== null && (!has || get_descriptor(target, prop)?.writable))
) {
if (s === undefined) {
s = (metadata.i ? source : mutable_source)(
has ? proxy(target[prop], metadata.i, metadata) : UNINITIALIZED
);
metadata.s.set(prop, s);
}
const value = get(s);
if (value === UNINITIALIZED) {
return false;
}
}
return has;
},
set(target, prop, value, receiver) {
/** @type {import('#client').ProxyMetadata} */
const metadata = target[STATE_SYMBOL];
let s = metadata.s.get(prop);
// If we haven't yet created a source for this property, we need to ensure
// we do so otherwise if we read it later, then the write won't be tracked and
// the heuristics of effects will be different vs if we had read the proxied
// object property before writing to that property.
if (s === undefined) {
// the read creates a signal
untrack(() => receiver[prop]);
s = metadata.s.get(prop);
}
if (s !== undefined) {
set(s, proxy(value, metadata.i, metadata));
}
const is_array = metadata.a;
const not_has = !(prop in target);
if (DEV) {
/** @type {import('#client').ProxyMetadata | undefined} */
const prop_metadata = value?.[STATE_SYMBOL];
if (prop_metadata && prop_metadata?.parent !== metadata) {
widen_ownership(metadata, prop_metadata);
}
check_ownership(metadata);
}
// variable.length = value -> clear all signals with index >= value
if (is_array && prop === 'length') {
for (let i = value; i < target.length; i += 1) {
const s = metadata.s.get(i + '');
if (s !== undefined) set(s, UNINITIALIZED);
}
}
// Set the new value before updating any signals so that any listeners get the new value
// @ts-ignore
target[prop] = value;
if (not_has) {
// If we have mutated an array directly, we might need to
// signal that length has also changed. Do it before updating metadata
// to ensure that iterating over the array as a result of a metadata update
// will not cause the length to be out of sync.
if (is_array) {
const ls = metadata.s.get('length');
const length = target.length;
if (ls !== undefined && ls.v !== length) {
set(ls, length);
}
}
update_version(metadata.v);
}
return true;
},
ownKeys(target) {
/** @type {import('#client').ProxyMetadata} */
const metadata = target[STATE_SYMBOL];
get(metadata.v);
return Reflect.ownKeys(target);
}
};
if (DEV) {
state_proxy_handler.setPrototypeOf = () => {
e.state_prototype_fixed();
};
}
/**
* @param {any} value
*/
export function get_proxied_value(value) {
if (value !== null && typeof value === 'object' && STATE_SYMBOL in value) {
var metadata = value[STATE_SYMBOL];
if (metadata) {
return metadata.p;
}
}
return value;
}
/**
* @param {any} a
* @param {any} b
*/
export function is(a, b) {
return Object.is(get_proxied_value(a), get_proxied_value(b));
}
|