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 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 273 274 275 276 277 278 279 280 281 282 283 284 285 286 287 288 289 290 291 292 293 294 295 296 297 298 299 300 301 302 303 304 305 306 307 308 309 310 311 312 313 314 315 316 317 318 319 320 321 322 323 324 325 326 327 328 329 330 331 332 333 334 335 336 337 338 339 340 341 342 343 344 345 346 347 348 349 350 351 352 353 354 355 356 357 358 359 360 361 362 363 364 365 366 367 368 369 370 371 372 373 374 375 376 377 378 379 380 381 382 383 384 385 386 387 388 389 390 391 392 393 394 395 396 397 398 399 400 401 402 403 404 405 406 407 408 409 410 411 412 413 414 415 416 417 418 419 420 421 422 423 424 425 426 427 428 429 430 431 432 433 434 435 436 437 438 439 440 441 442 443 444 445 446 447 448 449 450 451 452 453 454 455 456 457 458 459 460 461 462 463 464 465 466 467 468 469 470 471 472 473 474 475 476 477 478 479 480 481 482 483 484 485 486 487 488 489 490 491 492 493 494 495 496 497 498 499 500 501 502 503 504 505 506 507 508 509 510 511 512 513 514 515 516 517 518 519 520 521 522 523 524 525 526 527 528 529 530 531 532 533 534 535 536 537 538 539 540 541 542 543 544 545 546 547 548 549 550 551 552 553 554 555 556 557 558 559 560 561 562 563 564 565 566 567 568 569 570 571 572 573 574 575 576 577 578 579 580 581 582 583 584 585 586 587 588 589 590 591 592 593 594 595 596 597 598 599 600 601 602 603 604 605 606 607 608 609 610 611 612 613 614 615 616 617 618 619 620 621 622 623 624 625 626 627 628 629 630 631 632 633 634 635 636 637 638 639 640 641 642 643 644 645 646 647 648 649 650 651 652 653 654 655 656 657 658 659 660 661 662 663 664 665 666 667 668 669 670 671 672 673 674 675 676 677 678 679 680 681 682 683 684 685 686 687 688 689 690 691 692 693 694 695 696 697 698 699 700 701 702 703 704 705 706 707 708 709 710 711 712 713 714 715 716 717 718 719 720 721 722 723 724 725 726 727 728 729 730 731 732 733 734 735 736 737 738 739 740 741 742 743 744 745 746 747 748 749 750 751 752 753 754 755 756 757 758 759 760 761 762 763 764 765 766 767 768 769 770 771 772 773 774 775 776 777 778 779 780 781 782 783 784 785 786 787 788 789 790 791 792 793 794 795 796 797 798 799 800 801 802 803 804 805 806 807 808 809 810 811 812 813 814 815 816 817 818 819 820 821 822 823 824 825 826 827 828 829 830 831 832 833 834 835 836 837 838 839 840 841 842 843 844 845 846 847 848 849 850 851 852 853 854 855 856 857 858 859 860 861 862 863 864 865 866 867 868 869 870 871 872 873 874 875 876 877 878 879 880 881 882 883 884 885 886 887 888 889 890 891 892 893 894 895 896 897 898 899 900 901 902 903 904 905 906 907 908 909 910 911 912 913 914 915 916 917 918 919 920 921 922 923 924 925 926 927 928 929 930 931 932 933 934 935 936 937 938 939 940 941 942 943 944 945 946 947 948 949 950 951 952 953 954 955 956 957 958 959 960 961 962 963 964 965 966 967 968 969 970 971 972 973 974 975 976 977 978 979 980 981 982 983 984 985 986 987 988 989 990 991 992 993 994 995 996 997 998 999 1000 1001 1002 1003 1004 1005 1006 1007 1008 1009 1010 1011 1012 1013 1014 1015 1016 1017 1018 1019 1020 1021 1022 1023 1024 1025 1026 1027 1028 1029 1030 1031 1032 1033 1034 1035 1036 1037 1038 1039 1040 1041 1042 1043 1044 1045 1046 1047 1048 1049 1050 1051 1052 1053 1054 1055 1056 1057 1058 1059 1060 1061 1062 1063 1064 1065 1066 1067 1068 1069 1070 1071 1072 1073 1074 1075 1076 1077 1078 1079 1080 1081 1082 1083 1084 1085 1086 1087 1088 1089 1090 1091 1092 1093 1094 1095 1096 1097 1098 1099 1100 1101 1102 1103 1104 1105 1106 1107 1108 1109 1110 1111 1112 1113 1114 1115 1116 1117 1118 1119 1120 1121 1122 1123 1124 1125 1126 1127 1128 1129 1130 1131 1132 1133 1134 1135 1136 1137 1138 1139 1140 1141 1142 1143 1144 1145 1146 1147 1148 1149 1150 1151 1152 1153 1154 1155 1156 1157 1158 1159 1160 1161 1162 1163 1164 1165 1166 1167 1168 1169 1170 1171 1172 1173 1174 1175 1176 1177 1178 1179 1180 1181 1182 1183 1184 1185 1186 1187 1188 1189 1190 1191 1192 1193 1194 1195 1196 1197 1198 1199 1200 1201 1202 1203 1204 1205 1206 1207 1208 1209 1210 1211 1212 1213 1214 1215 1216 1217 1218 1219 1220 1221 1222 1223 1224 1225 1226 1227 1228 1229 1230 1231 1232 1233 1234 1235 1236 1237 1238 1239 1240 1241 1242 1243 1244 1245 1246 1247 1248 1249 1250 1251 1252 1253 1254 1255 1256 1257 1258 1259 1260 1261 1262 1263 1264 1265 1266 1267 1268 1269 1270 1271 1272 1273 1274 1275 1276 1277 1278 1279 1280 1281 1282 1283 1284 1285 1286 1287 1288 1289 1290 1291 1292 1293 1294 1295 1296 1297 1298 1299 1300 1301 1302 1303 1304 1305 1306 1307 1308 1309 1310 1311 1312 1313 1314 1315 1316 1317 1318 1319 1320 1321 1322 1323 1324 1325 1326 1327 1328 1329 1330 1331 1332 1333 1334 1335 1336 1337 1338 1339 1340 1341 1342 1343 1344 1345 1346 1347 1348 1349 1350 1351 1352 1353 1354 1355 1356 1357 1358 1359 1360 1361 1362 1363 1364 1365 1366 1367 1368 1369 1370 1371 1372 1373 1374 1375 1376 1377 1378 1379 1380 1381 1382 | 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 2x 2x 2x 2x 2x 2x 2x 2x 2x 2x 2x 2x 2x 2x 2x 2x 2x 2x 2x 2x 2x 2x 2x 2x 69940x 69940x 2x 2x 2x 14142x 14142x 2x 2x 2x 14142x 14142x 2x 2x 2x 2x 2x 2x 2x 2x 2x 2x 2x 2x 2x 2x 2x 2x 2x 2x 432x 432x 2x 2x 2x 2x 2x 2x 432x 432x 2x 2x 2x 2x 2x 2x 2x 2x 2x 2x 2x 2x 2x 1179x 1179x 2x 2x 2x 2x 2x 2x 443x 443x 2x 2x 2x 2x 2x 2x 2x 2x 2x 2x 2x 2x 2x 2x 2x 2x 2x 432x 432x 2x 2x 2x 2x 2x 2x 2x 2x 2x 2x 2x 2x 2x 2x 2x 492x 492x 2x 2x 2x 57976x 57976x 2x 2x 2x 2x 2x 2x 2x 826x 826x 826x 826x 826x 667x 667x 667x 667x 667x 667x 667x 151x 151x 151x 2x 2x 151x 151x 151x 151x 151x 667x 826x 826x 2x 2x 2x 2x 2x 2x 2x 2x 82540x 82540x 82540x 82540x 82540x 82540x 82540x 33058x 33058x 49482x 49482x 49482x 82540x 1875x 1875x 1875x 1802x 1802x 1802x 1802x 1802x 2427x 2427x 2427x 1479x 1479x 2427x 2427x 2427x 144x 144x 144x 144x 144x 144x 53x 53x 53x 91x 144x 31x 31x 31x 31x 31x 29x 31x 2x 2x 31x 2427x 1387x 1387x 2283x 304x 304x 304x 304x 18x 18x 18x 304x 304x 294x 304x 10x 10x 304x 2427x 1802x 435x 435x 1875x 336x 336x 1875x 202x 202x 1875x 48042x 48042x 48042x 2x 2x 2x 2x 2x 2x 72x 72x 72x 46x 46x 26x 26x 26x 72x 72x 72x 4x 4x 26x 26x 26x 26x 39x 32x 32x 32x 25x 25x 25x 32x 32x 32x 26x 72x 72x 72x 72x 72x 72x 72x 72x 72x 24x 24x 24x 357x 357x 201x 201x 156x 156x 24x 24x 24x 24x 26x 26x 26x 26x 2x 2x 2x 2x 2x 2x 2x 69530x 69530x 69530x 69530x 69530x 69530x 69530x 69530x 69530x 69530x 69530x 69530x 69530x 69530x 69530x 69530x 69530x 69530x 29286x 29286x 516x 516x 516x 516x 516x 516x 516x 516x 516x 516x 516x 516x 516x 516x 1119x 1119x 1119x 1119x 1119x 1119x 689x 689x 1119x 516x 29286x 29286x 477x 477x 1081x 1081x 29286x 28809x 28809x 28809x 28809x 29286x 29286x 29254x 48847x 48847x 48847x 48847x 31793x 48847x 15161x 15161x 15161x 15161x 15161x 15161x 48847x 29254x 69530x 473x 473x 473x 69457x 69530x 69530x 69530x 69530x 69530x 69530x 69530x 69530x 69530x 2x 2x 2x 2x 2x 2x 2x 47924x 47924x 47924x 47924x 46621x 46621x 46621x 46023x 30864x 46023x 15159x 15159x 15159x 15159x 46023x 46621x 47924x 47924x 47924x 9151x 9151x 9151x 9151x 8797x 8797x 9151x 9151x 47924x 2x 2x 2x 2x 2x 2x 2x 47403x 47403x 28962x 28962x 28962x 47315x 47315x 47315x 47235x 47235x 47315x 28962x 47403x 2x 2x 2x 2x 2x 2x 2x 102480x 102480x 102480x 102480x 102480x 31960x 31960x 31960x 31960x 102480x 2x 2x 2x 2x 2x 2x 54057x 54057x 54057x 54057x 54057x 54057x 54057x 54057x 54057x 54057x 54057x 54057x 54057x 54057x 54057x 54057x 54057x 54057x 54057x 54057x 54057x 49228x 49228x 54057x 54057x 54057x 54057x 54057x 72x 54057x 54057x 54057x 54057x 54057x 54057x 54057x 54057x 54057x 2x 24236x 24236x 2x 2x 2x 24234x 24234x 2x 2x 2x 2x 2x 15929x 15929x 15929x 7047x 7047x 8882x 8882x 8882x 8882x 8882x 8882x 15923x 37427x 37427x 37427x 37427x 66x 37427x 37361x 37361x 37361x 37361x 37361x 37361x 37427x 15929x 8880x 8880x 15929x 2x 2x 2x 2x 2x 37423x 37423x 37423x 2175x 37366x 4720x 4720x 4720x 4636x 4636x 4636x 4636x 4636x 4636x 4636x 4636x 2932x 270x 270x 2932x 2662x 2662x 2662x 2932x 4636x 4720x 37423x 2x 3611x 3611x 3611x 3611x 3611x 3611x 3611x 3521x 3521x 3611x 2x 2x 2x 2x 2x 2x 19362x 5756x 3611x 3611x 3611x 5756x 19362x 19362x 19362x 19362x 43853x 43853x 43853x 43853x 27341x 15259x 15259x 43853x 7280x 7280x 7280x 2x 2x 2x 2x 2x 2x 2x 2x 2x 2x 2x 2x 42015x 42015x 42015x 42015x 42015x 94252x 94252x 94252x 94252x 94252x 94252x 94252x 94252x 94252x 53231x 15056x 15056x 53231x 53231x 47384x 12427x 12427x 12427x 12427x 47380x 47384x 19813x 19813x 19813x 53231x 5847x 1193x 136x 136x 136x 5847x 4654x 4654x 5847x 53231x 74299x 74299x 94252x 45746x 45746x 45746x 57304x 37359x 37359x 19945x 56125x 8387x 8387x 8387x 11558x 11558x 45746x 28553x 28553x 28553x 42011x 42011x 42011x 42015x 4654x 4654x 4654x 4654x 42015x 2x 2x 2x 2x 2x 2x 2x 2x 2x 15354x 15354x 15354x 15354x 15354x 15354x 15354x 15354x 15354x 15354x 15354x 15354x 15354x 15354x 12318x 12318x 15346x 15354x 15354x 15354x 15354x 3611x 3611x 14319x 14319x 14319x 14319x 15354x 15354x 15354x 15354x 15354x 2x 2x 2x 2x 2x 2x 104x 104x 104x 104x 104x 2x 2x 2x 2x 2x 2x 2x 125404x 103x 103x 103x 103x 125404x 125404x 125404x 125404x 125404x 628x 628x 125404x 125404x 125404x 125404x 125404x 105821x 125404x 91090x 91090x 91090x 91090x 91090x 91090x 37586x 91090x 37574x 91090x 53516x 53516x 3193x 53516x 51597x 29291x 51597x 19605x 19605x 51597x 91090x 91090x 91090x 91090x 91090x 10x 91090x 2x 2x 2x 91090x 125404x 125404x 125404x 38165x 125404x 13994x 13994x 13994x 13994x 13994x 13994x 13994x 13994x 125403x 125403x 125403x 2x 2x 2x 2x 2x 2x 2x 310x 310x 310x 310x 310x 310x 310x 310x 310x 310x 310x 310x 310x 310x 580x 580x 154x 152x 146x 146x 152x 580x 426x 426x 580x 310x 2x 2x 2x 2x 2x 2x 2x 2x 42372x 42372x 24789x 24789x 24789x 24789x 42361x 30837x 30837x 30837x 30837x 30837x 30837x 30837x 2669x 2669x 28168x 28168x 28168x 28168x 28168x 28168x 28168x 28168x 28168x 30837x 22152x 6073x 6073x 6073x 6073x 6073x 22146x 16079x 16079x 22152x 30837x 42372x 2x 2x 2x 2x 2x 2x 2x 2x 2x 2x 10037x 10037x 10037x 10037x 10037x 10037x 10037x 10037x 2x 2x 2x 2x 2x 2x 2x 2x 2x 175677x 175677x 2x 2x 2x 2x 2x 2x 2x 21731x 21731x 21731x 20643x 21731x 21731x 2x 2x 2x 2x 2x 2x 2x 2x 2x 2x 2x 36x 36x 36x 36x 36x 36x 36x 16x 16x 36x 36x 36x 36x 2x 2x 2x 2x 2x 2x 2x 2x 2x 2x 2x 2x 2x 2x 2x 30x 30x 30x 30x 2x 2x 2x 2x 2x 2x 2x 2x 2x 2x 4x 4x 4x 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 72x 72x 72x 72x 72x 72x 72x 2x 2x 2x 2x 2x 60x 60x 60x 46x 46x 36x 36x 10x 10x 24x 24x 2x 2x 2x 2x 2x 2x 2x 4288x 4288x 4288x 4288x 2x 2x 2x 2x 2x 2x 2x 6x 6x 2x 2x 2x 2x 2x 2x 2x 26x 26x 26x 102x 102x 26x 26x 2x 2x 2x 2x 2x 2x 2x 2x 107x 107x 2x 2x 2x 2x 2x 2x 2x 2x 18x 18x 2x 2x 2x 2x 2x 2x 2x 2x 5058x 5058x 5058x 5058x 5058x 5058x 5058x 5058x 5058x 5058x 5058x 4598x 4598x 4598x 4598x 4598x 4598x 4598x 5058x 5058x 5058x 5058x 5058x 5058x 5058x 2x 2x 2x 2x 2x 2x 2x 5032x 5032x 5032x 2481x 2481x 5032x 5032x 2223x 2223x 2255x 2255x 2223x 5032x 5032x 5032x 5032x 5032x 5032x 5032x 5032x 5032x 5032x 2x 2x 2x 2x 2x 2x 2x 2x 3021x 657x 657x 2364x 3021x 116x 3021x 2176x 352x 352x 4x 4x 352x 2176x 3021x 2x 2x 2x 2x 2x 2x 2x 2x 2x 670x 670x 670x 342x 670x 342x 670x 338x 338x 338x 338x 338x 508x 508x 508x 508x 338x 338x 338x 338x 338x 338x 338x 338x 670x 2x 2x 2x 2x 2x 2x 2x 21731x 15011x 15011x 15011x 6720x 6720x 6720x 2x 2x 2x 2x 2x 2x 66x 66x 66x 66x 66x 66x 66x 66x 66x 66x 66x 66x 66x 2x 2x 2x 2x 2x 2x 2x 2x 2x 2x 2x 2x 2x 2x 2x 2x 18x 18x 18x 18x 8x 18x 8x 8x 8x 8x 8x 8x 8x 8x 8x 8x 8x 8x 18x 18x | import { DEV } from 'esm-env';
import {
define_property,
get_descriptors,
get_prototype_of,
is_frozen,
object_freeze
} from './utils.js';
import { snapshot } from './proxy.js';
import {
destroy_effect,
effect,
execute_effect_teardown,
unlink_effect
} from './reactivity/effects.js';
import {
EFFECT,
RENDER_EFFECT,
DIRTY,
MAYBE_DIRTY,
CLEAN,
DERIVED,
UNOWNED,
DESTROYED,
INERT,
BRANCH_EFFECT,
STATE_SYMBOL,
BLOCK_EFFECT,
ROOT_EFFECT,
LEGACY_DERIVED_PROP,
DISCONNECTED,
STATE_FROZEN_SYMBOL
} from './constants.js';
import { flush_tasks } from './dom/task.js';
import { add_owner } from './dev/ownership.js';
import { mutate, set, source } from './reactivity/sources.js';
import { update_derived } from './reactivity/deriveds.js';
import { inspect_captured_signals, inspect_fn, set_inspect_fn } from './dev/inspect.js';
import * as e from './errors.js';
import { lifecycle_outside_component } from '../shared/errors.js';
const FLUSH_MICROTASK = 0;
const FLUSH_SYNC = 1;
// Used for DEV time error handling
/** @param {WeakSet<Error>} value */
const handled_errors = new WeakSet();
// Used for controlling the flush of effects.
let current_scheduler_mode = FLUSH_MICROTASK;
// Used for handling scheduling
let is_micro_task_queued = false;
export let is_flushing_effect = false;
export let is_destroying_effect = false;
/** @param {boolean} value */
export function set_is_flushing_effect(value) {
is_flushing_effect = value;
}
/** @param {boolean} value */
export function set_is_destroying_effect(value) {
is_destroying_effect = value;
}
/** @param {boolean} value */
export function set_untracking(value) {
current_untracking = value;
}
// Used for $inspect
export let is_batching_effect = false;
let is_inspecting_signal = false;
// Handle effect queues
/** @type {import('#client').Effect[]} */
let current_queued_root_effects = [];
let flush_count = 0;
// Handle signal reactivity tree dependencies and reactions
/** @type {null | import('#client').Reaction} */
export let current_reaction = null;
/** @param {null | import('#client').Reaction} reaction */
export function set_current_reaction(reaction) {
current_reaction = reaction;
}
/** @type {null | import('#client').Effect} */
export let current_effect = null;
/** @param {null | import('#client').Effect} effect */
export function set_current_effect(effect) {
current_effect = effect;
}
/** @type {null | import('#client').Value[]} */
export let current_dependencies = null;
let current_dependencies_index = 0;
/**
* Tracks writes that the effect it's executed in doesn't listen to yet,
* so that the dependency can be added to the effect later on if it then reads it
* @type {null | import('#client').Source[]}
*/
export let current_untracked_writes = null;
/** @param {null | import('#client').Source[]} value */
export function set_current_untracked_writes(value) {
current_untracked_writes = value;
}
/** @type {null | import('#client').ValueDebug} */
export let last_inspected_signal = null;
/** @param {null | import('#client').ValueDebug} signal */
export function set_last_inspected_signal(signal) {
last_inspected_signal = signal;
}
/** If `true`, `get`ting the signal should not register it as a dependency */
export let current_untracking = false;
// If we are working with a get() chain that has no active container,
// to prevent memory leaks, we skip adding the reaction.
export let current_skip_reaction = false;
// Handle collecting all signals which are read during a specific time frame
export let is_signals_recorded = false;
let captured_signals = new Set();
// Handling runtime component context
/** @type {import('#client').ComponentContext | null} */
export let current_component_context = null;
/** @param {import('#client').ComponentContext | null} context */
export function set_current_component_context(context) {
current_component_context = context;
}
/**
* The current component function. Different from current component context:
* ```html
* <!-- App.svelte -->
* <Foo>
* <Bar /> <!-- context == Foo.svelte, function == App.svelte -->
* </Foo>
* ```
* @type {import('#client').ComponentContext['function']}
*/
export let dev_current_component_function = null;
/** @param {import('#client').ComponentContext['function']} fn */
export function set_dev_current_component_function(fn) {
dev_current_component_function = fn;
}
/** @returns {boolean} */
export function is_runes() {
return current_component_context !== null && current_component_context.l === null;
}
/**
* @param {import('#client').ProxyStateObject} target
* @param {string | symbol} prop
* @param {any} receiver
*/
export function batch_inspect(target, prop, receiver) {
const value = Reflect.get(target, prop, receiver);
/**
* @this {any}
*/
return function () {
const previously_batching_effect = is_batching_effect;
is_batching_effect = true;
try {
return Reflect.apply(value, this, arguments);
} finally {
is_batching_effect = previously_batching_effect;
if (last_inspected_signal !== null && !is_inspecting_signal) {
is_inspecting_signal = true;
try {
for (const fn of last_inspected_signal.inspect) {
fn();
}
} finally {
is_inspecting_signal = false;
}
last_inspected_signal = null;
}
}
};
}
/**
* Determines whether a derived or effect is dirty.
* If it is MAYBE_DIRTY, will set the status to CLEAN
* @param {import('#client').Reaction} reaction
* @returns {boolean}
*/
export function check_dirtiness(reaction) {
var flags = reaction.f;
var is_dirty = (flags & DIRTY) !== 0;
var is_unowned = (flags & UNOWNED) !== 0;
// If we are unowned, we still need to ensure that we update our version to that
// of our dependencies.
if (is_dirty && !is_unowned) {
return true;
}
var is_disconnected = (flags & DISCONNECTED) !== 0;
if ((flags & MAYBE_DIRTY) !== 0 || (is_dirty && is_unowned)) {
var dependencies = reaction.deps;
if (dependencies !== null) {
var length = dependencies.length;
var is_equal;
var reactions;
for (var i = 0; i < length; i++) {
var dependency = dependencies[i];
if (!is_dirty && check_dirtiness(/** @type {import('#client').Derived} */ (dependency))) {
is_equal = update_derived(/** @type {import('#client').Derived} **/ (dependency), true);
}
var version = dependency.version;
if (is_unowned) {
// If we're working with an unowned derived signal, then we need to check
// if our dependency write version is higher. If it is then we can assume
// that state has changed to a newer version and thus this unowned signal
// is also dirty.
if (version > /** @type {import('#client').Derived} */ (reaction).version) {
/** @type {import('#client').Derived} */ (reaction).version = version;
return !is_equal;
}
if (!current_skip_reaction && !dependency?.reactions?.includes(reaction)) {
// If we are working with an unowned signal as part of an effect (due to !current_skip_reaction)
// and the version hasn't changed, we still need to check that this reaction
// if linked to the dependency source – otherwise future updates will not be caught.
reactions = dependency.reactions;
if (reactions === null) {
dependency.reactions = [reaction];
} else {
reactions.push(reaction);
}
}
} else if ((reaction.f & DIRTY) !== 0) {
// `signal` might now be dirty, as a result of calling `check_dirtiness` and/or `update_derived`
return true;
} else if (is_disconnected) {
// It might be that the derived was was dereferenced from its dependencies but has now come alive again.
// In thise case, we need to re-attach it to the graph and mark it dirty if any of its dependencies have
// changed since.
if (version > /** @type {import('#client').Derived} */ (reaction).version) {
/** @type {import('#client').Derived} */ (reaction).version = version;
is_dirty = true;
}
reactions = dependency.reactions;
if (reactions === null) {
dependency.reactions = [reaction];
} else if (!reactions.includes(reaction)) {
reactions.push(reaction);
}
}
}
}
// Unowned signals are always maybe dirty, as we instead check their dependency versions.
if (!is_unowned) {
set_signal_status(reaction, CLEAN);
}
if (is_disconnected) {
reaction.f ^= DISCONNECTED;
}
}
return is_dirty;
}
/**
* @param {Error} error
* @param {import("#client").Effect} effect
* @param {import("#client").ComponentContext | null} component_context
*/
function handle_error(error, effect, component_context) {
// Given we don't yet have error boundaries, we will just always throw.
if (!DEV || handled_errors.has(error) || component_context === null) {
throw error;
}
const component_stack = [];
const effect_name = effect.fn?.name;
if (effect_name) {
component_stack.push(effect_name);
}
/** @type {import("#client").ComponentContext | null} */
let current_context = component_context;
while (current_context !== null) {
var filename = current_context.function?.filename;
if (filename) {
const file = filename.split('/').at(-1);
component_stack.push(file);
}
current_context = current_context.p;
}
const indent = /Firefox/.test(navigator.userAgent) ? ' ' : '\t';
define_property(error, 'message', {
value: error.message + `\n${component_stack.map((name) => `\n${indent}in ${name}`).join('')}\n`
});
const stack = error.stack;
// Filter out internal files from callstack
if (stack) {
const lines = stack.split('\n');
const new_lines = [];
for (let i = 0; i < lines.length; i++) {
const line = lines[i];
if (line.includes('svelte/src/internal')) {
continue;
}
new_lines.push(line);
}
define_property(error, 'stack', {
value: error.stack + new_lines.join('\n')
});
}
handled_errors.add(error);
throw error;
}
/**
* @template V
* @param {import('#client').Reaction} signal
* @returns {V}
*/
export function execute_reaction_fn(signal) {
const previous_dependencies = current_dependencies;
const previous_dependencies_index = current_dependencies_index;
const previous_untracked_writes = current_untracked_writes;
const previous_reaction = current_reaction;
const previous_skip_reaction = current_skip_reaction;
const previous_untracking = current_untracking;
current_dependencies = /** @type {null | import('#client').Value[]} */ (null);
current_dependencies_index = 0;
current_untracked_writes = null;
current_reaction = signal;
current_skip_reaction = !is_flushing_effect && (signal.f & UNOWNED) !== 0;
current_untracking = false;
try {
let res = /** @type {Function} */ (0, signal.fn)();
let dependencies = /** @type {import('#client').Value<unknown>[]} **/ (signal.deps);
if (current_dependencies !== null) {
let i;
if (dependencies !== null) {
const deps_length = dependencies.length;
// Include any dependencies up until the current_dependencies_index.
const full_current_dependencies =
current_dependencies_index === 0
? current_dependencies
: dependencies.slice(0, current_dependencies_index).concat(current_dependencies);
const current_dep_length = full_current_dependencies.length;
// If we have more than 16 elements in the array then use a Set for faster performance
// TODO: evaluate if we should always just use a Set or not here?
const full_current_dependencies_set =
current_dep_length > 16 && deps_length - current_dependencies_index > 1
? new Set(full_current_dependencies)
: null;
for (i = current_dependencies_index; i < deps_length; i++) {
const dependency = dependencies[i];
if (
full_current_dependencies_set !== null
? !full_current_dependencies_set.has(dependency)
: !full_current_dependencies.includes(dependency)
) {
remove_reaction(signal, dependency);
}
}
}
if (dependencies !== null && current_dependencies_index > 0) {
dependencies.length = current_dependencies_index + current_dependencies.length;
for (i = 0; i < current_dependencies.length; i++) {
dependencies[current_dependencies_index + i] = current_dependencies[i];
}
} else {
signal.deps = /** @type {import('#client').Value<V>[]} **/ (
dependencies = current_dependencies
);
}
if (!current_skip_reaction) {
for (i = current_dependencies_index; i < dependencies.length; i++) {
const dependency = dependencies[i];
const reactions = dependency.reactions;
if (reactions === null) {
dependency.reactions = [signal];
} else if (reactions[reactions.length - 1] !== signal) {
// TODO: should this be:
//
// } else if (!reactions.includes(signal)) {
//
reactions.push(signal);
}
}
}
} else if (dependencies !== null && current_dependencies_index < dependencies.length) {
remove_reactions(signal, current_dependencies_index);
dependencies.length = current_dependencies_index;
}
return res;
} finally {
current_dependencies = previous_dependencies;
current_dependencies_index = previous_dependencies_index;
current_untracked_writes = previous_untracked_writes;
current_reaction = previous_reaction;
current_skip_reaction = previous_skip_reaction;
current_untracking = previous_untracking;
}
}
/**
* @template V
* @param {import('#client').Reaction} signal
* @param {import('#client').Value<V>} dependency
* @returns {void}
*/
function remove_reaction(signal, dependency) {
const reactions = dependency.reactions;
let reactions_length = 0;
if (reactions !== null) {
reactions_length = reactions.length - 1;
const index = reactions.indexOf(signal);
if (index !== -1) {
if (reactions_length === 0) {
dependency.reactions = null;
} else {
// Swap with last element and then remove.
reactions[index] = reactions[reactions_length];
reactions.pop();
}
}
}
// If the derived has no reactions, then we can disconnect it from the graph,
// allowing it to either reconnect in the future, or be GC'd by the VM.
if (reactions_length === 0 && (dependency.f & DERIVED) !== 0) {
set_signal_status(dependency, MAYBE_DIRTY);
// If we are working with a derived that is owned by an effect, then mark it as being
// disconnected.
if ((dependency.f & (UNOWNED | DISCONNECTED)) === 0) {
dependency.f ^= DISCONNECTED;
}
remove_reactions(/** @type {import('#client').Derived} **/ (dependency), 0);
}
}
/**
* @param {import('#client').Reaction} signal
* @param {number} start_index
* @returns {void}
*/
export function remove_reactions(signal, start_index) {
const dependencies = signal.deps;
if (dependencies !== null) {
const active_dependencies = start_index === 0 ? null : dependencies.slice(0, start_index);
let i;
for (i = start_index; i < dependencies.length; i++) {
const dependency = dependencies[i];
// Avoid removing a reaction if we know that it is active (start_index will not be 0)
if (active_dependencies === null || !active_dependencies.includes(dependency)) {
remove_reaction(signal, dependency);
}
}
}
}
/**
* @param {import('#client').Reaction} signal
* @param {boolean} [remove_dom]
* @returns {void}
*/
export function destroy_effect_children(signal, remove_dom = true) {
let effect = signal.first;
signal.first = null;
signal.last = null;
var sibling;
while (effect !== null) {
sibling = effect.next;
destroy_effect(effect, remove_dom);
effect = sibling;
}
}
/**
* @param {import('#client').Effect} effect
* @returns {void}
*/
export function execute_effect(effect) {
var flags = effect.f;
if ((flags & DESTROYED) !== 0) {
return;
}
set_signal_status(effect, CLEAN);
var component_context = effect.ctx;
var previous_effect = current_effect;
var previous_component_context = current_component_context;
current_effect = effect;
current_component_context = component_context;
if (DEV) {
var previous_component_fn = dev_current_component_function;
dev_current_component_function = effect.component_function;
}
try {
if ((flags & BLOCK_EFFECT) === 0) {
destroy_effect_children(effect);
}
execute_effect_teardown(effect);
var teardown = execute_reaction_fn(effect);
effect.teardown = typeof teardown === 'function' ? teardown : null;
} catch (error) {
handle_error(/** @type {Error} */ (error), effect, current_component_context);
} finally {
current_effect = previous_effect;
current_component_context = previous_component_context;
if (DEV) {
dev_current_component_function = previous_component_fn;
}
}
}
function infinite_loop_guard() {
if (flush_count > 1000) {
flush_count = 0;
e.effect_update_depth_exceeded();
}
flush_count++;
}
/**
* @param {Array<import('#client').Effect>} root_effects
* @returns {void}
*/
function flush_queued_root_effects(root_effects) {
var length = root_effects.length;
if (length === 0) {
return;
}
infinite_loop_guard();
var previously_flushing_effect = is_flushing_effect;
is_flushing_effect = true;
try {
for (var i = 0; i < length; i++) {
var effect = root_effects[i];
// When working with custom elements, the root effects might not have a root
if (effect.first === null && (effect.f & BRANCH_EFFECT) === 0) {
flush_queued_effects([effect]);
} else {
/** @type {import('#client').Effect[]} */
var collected_effects = [];
process_effects(effect, collected_effects);
flush_queued_effects(collected_effects);
}
}
} finally {
is_flushing_effect = previously_flushing_effect;
}
}
/**
* @param {Array<import('#client').Effect>} effects
* @returns {void}
*/
function flush_queued_effects(effects) {
var length = effects.length;
if (length === 0) return;
for (var i = 0; i < length; i++) {
var effect = effects[i];
if ((effect.f & (DESTROYED | INERT)) === 0 && check_dirtiness(effect)) {
execute_effect(effect);
// Effects with no dependencies or teardown do not get added to the effect tree.
// Deferred effects (e.g. `$effect(...)`) _are_ added to the tree because we
// don't know if we need to keep them until they are executed. Doing the check
// here (rather than in `execute_effect`) allows us to skip the work for
// immediate effects.
if (effect.deps === null && effect.first === null && effect.dom === null) {
if (effect.teardown === null) {
// remove this effect from the graph
unlink_effect(effect);
} else {
// keep the effect in the graph, but free up some memory
effect.fn = null;
}
}
}
}
}
function process_deferred() {
is_micro_task_queued = false;
if (flush_count > 1001) {
return;
}
const previous_queued_root_effects = current_queued_root_effects;
current_queued_root_effects = [];
flush_queued_root_effects(previous_queued_root_effects);
if (!is_micro_task_queued) {
flush_count = 0;
}
}
/**
* @param {import('#client').Effect} signal
* @returns {void}
*/
export function schedule_effect(signal) {
if (current_scheduler_mode === FLUSH_MICROTASK) {
if (!is_micro_task_queued) {
is_micro_task_queued = true;
queueMicrotask(process_deferred);
}
}
var effect = signal;
while (effect.parent !== null) {
effect = effect.parent;
var flags = effect.f;
if ((flags & BRANCH_EFFECT) !== 0) {
if ((flags & CLEAN) === 0) return;
set_signal_status(effect, MAYBE_DIRTY);
}
}
current_queued_root_effects.push(effect);
}
/**
*
* This function both runs render effects and collects user effects in topological order
* from the starting effect passed in. Effects will be collected when they match the filtered
* bitwise flag passed in only. The collected effects array will be populated with all the user
* effects to be flushed.
*
* @param {import('#client').Effect} effect
* @param {import('#client').Effect[]} collected_effects
* @returns {void}
*/
function process_effects(effect, collected_effects) {
var current_effect = effect.first;
var effects = [];
main_loop: while (current_effect !== null) {
var flags = current_effect.f;
// TODO: we probably don't need to check for destroyed as it shouldn't be encountered?
var is_active = (flags & (DESTROYED | INERT)) === 0;
var is_branch = flags & BRANCH_EFFECT;
var is_clean = (flags & CLEAN) !== 0;
var child = current_effect.first;
// Skip this branch if it's clean
if (is_active && (!is_branch || !is_clean)) {
if (is_branch) {
set_signal_status(current_effect, CLEAN);
}
if ((flags & RENDER_EFFECT) !== 0) {
if (!is_branch && check_dirtiness(current_effect)) {
execute_effect(current_effect);
// Child might have been mutated since running the effect
child = current_effect.first;
}
if (child !== null) {
current_effect = child;
continue;
}
} else if ((flags & EFFECT) !== 0) {
if (is_branch || is_clean) {
if (child !== null) {
current_effect = child;
continue;
}
} else {
effects.push(current_effect);
}
}
}
var sibling = current_effect.next;
if (sibling === null) {
let parent = current_effect.parent;
while (parent !== null) {
if (effect === parent) {
break main_loop;
}
var parent_sibling = parent.next;
if (parent_sibling !== null) {
current_effect = parent_sibling;
continue main_loop;
}
parent = parent.parent;
}
}
current_effect = sibling;
}
// We might be dealing with many effects here, far more than can be spread into
// an array push call (callstack overflow). So let's deal with each effect in a loop.
for (var i = 0; i < effects.length; i++) {
child = effects[i];
collected_effects.push(child);
process_effects(child, collected_effects);
}
}
/**
* Internal version of `flushSync` with the option to not flush previous effects.
* Returns the result of the passed function, if given.
* @param {() => any} [fn]
* @param {boolean} [flush_previous]
* @returns {any}
*/
export function flush_sync(fn, flush_previous = true) {
var previous_scheduler_mode = current_scheduler_mode;
var previous_queued_root_effects = current_queued_root_effects;
try {
infinite_loop_guard();
/** @type {import('#client').Effect[]} */
const root_effects = [];
current_scheduler_mode = FLUSH_SYNC;
current_queued_root_effects = root_effects;
is_micro_task_queued = false;
if (flush_previous) {
flush_queued_root_effects(previous_queued_root_effects);
}
var result = fn?.();
flush_tasks();
if (current_queued_root_effects.length > 0 || root_effects.length > 0) {
flush_sync();
}
flush_count = 0;
return result;
} finally {
current_scheduler_mode = previous_scheduler_mode;
current_queued_root_effects = previous_queued_root_effects;
}
}
/**
* Returns a promise that resolves once any pending state changes have been applied.
* @returns {Promise<void>}
*/
export async function tick() {
await Promise.resolve();
// By calling flush_sync we guarantee that any pending state changes are applied after one tick.
// TODO look into whether we can make flushing subsequent updates synchronously in the future.
flush_sync();
}
/**
* @template V
* @param {import('#client').Value<V>} signal
* @returns {V}
*/
export function get(signal) {
if (DEV && inspect_fn) {
var s = /** @type {import('#client').ValueDebug} */ (signal);
s.inspect.add(inspect_fn);
inspect_captured_signals.push(s);
}
const flags = signal.f;
if ((flags & DESTROYED) !== 0) {
return signal.v;
}
if (is_signals_recorded) {
captured_signals.add(signal);
}
// Register the dependency on the current reaction signal.
if (
current_reaction !== null &&
(current_reaction.f & (BRANCH_EFFECT | ROOT_EFFECT)) === 0 &&
!current_untracking
) {
const unowned = (current_reaction.f & UNOWNED) !== 0;
const dependencies = current_reaction.deps;
if (
current_dependencies === null &&
dependencies !== null &&
dependencies[current_dependencies_index] === signal &&
!(unowned && current_effect !== null)
) {
current_dependencies_index++;
} else if (
dependencies === null ||
current_dependencies_index === 0 ||
dependencies[current_dependencies_index - 1] !== signal
) {
if (current_dependencies === null) {
current_dependencies = [signal];
} else if (current_dependencies[current_dependencies.length - 1] !== signal) {
current_dependencies.push(signal);
}
}
if (
current_untracked_writes !== null &&
current_effect !== null &&
(current_effect.f & CLEAN) !== 0 &&
(current_effect.f & BRANCH_EFFECT) === 0 &&
current_untracked_writes.includes(signal)
) {
set_signal_status(current_effect, DIRTY);
schedule_effect(current_effect);
}
}
if (
(flags & DERIVED) !== 0 &&
check_dirtiness(/** @type {import('#client').Derived} */ (signal))
) {
if (DEV) {
// we want to avoid tracking indirect dependencies
const previous_inspect_fn = inspect_fn;
set_inspect_fn(null);
update_derived(/** @type {import('#client').Derived} **/ (signal), false);
set_inspect_fn(previous_inspect_fn);
} else {
update_derived(/** @type {import('#client').Derived} **/ (signal), false);
}
}
return signal.v;
}
/**
* Invokes a function and captures all signals that are read during the invocation,
* then invalidates them.
* @param {() => any} fn
*/
export function invalidate_inner_signals(fn) {
var previous_is_signals_recorded = is_signals_recorded;
var previous_captured_signals = captured_signals;
is_signals_recorded = true;
captured_signals = new Set();
var captured = captured_signals;
var signal;
try {
untrack(fn);
} finally {
is_signals_recorded = previous_is_signals_recorded;
if (is_signals_recorded) {
for (signal of captured_signals) {
previous_captured_signals.add(signal);
}
}
captured_signals = previous_captured_signals;
}
for (signal of captured) {
// Go one level up because derived signals created as part of props in legacy mode
if ((signal.f & LEGACY_DERIVED_PROP) !== 0) {
for (const dep of /** @type {import('#client').Derived} */ (signal).deps || []) {
if ((dep.f & DERIVED) === 0) {
mutate(dep, null /* doesnt matter */);
}
}
} else {
mutate(signal, null /* doesnt matter */);
}
}
}
/**
* @param {import('#client').Value} signal
* @param {number} to_status should be DIRTY or MAYBE_DIRTY
* @param {boolean} force_schedule
* @returns {void}
*/
export function mark_reactions(signal, to_status, force_schedule) {
var reactions = signal.reactions;
if (reactions === null) return;
var runes = is_runes();
var length = reactions.length;
for (var i = 0; i < length; i++) {
var reaction = reactions[i];
var flags = reaction.f;
// We skip any effects that are already dirty. Additionally, we also
// skip if the reaction is the same as the current effect (except if we're not in runes or we
// are in force schedule mode).
if ((flags & DIRTY) !== 0 || ((!force_schedule || !runes) && reaction === current_effect)) {
continue;
}
set_signal_status(reaction, to_status);
// If the signal is not clean, then skip over it – with the exception of unowned signals that
// are already maybe dirty. Unowned signals might be dirty because they are not captured as part of an
// effect.
var maybe_dirty = (flags & MAYBE_DIRTY) !== 0;
var unowned = (flags & UNOWNED) !== 0;
if ((flags & CLEAN) !== 0 || (maybe_dirty && unowned)) {
if ((reaction.f & DERIVED) !== 0) {
mark_reactions(
/** @type {import('#client').Derived} */ (reaction),
MAYBE_DIRTY,
force_schedule
);
} else {
schedule_effect(/** @type {import('#client').Effect} */ (reaction));
}
}
}
}
/**
* Use `untrack` to prevent something from being treated as an `$effect`/`$derived` dependency.
*
* https://svelte-5-preview.vercel.app/docs/functions#untrack
* @template T
* @param {() => T} fn
* @returns {T}
*/
export function untrack(fn) {
const previous_untracking = current_untracking;
try {
current_untracking = true;
return fn();
} finally {
current_untracking = previous_untracking;
}
}
const STATUS_MASK = ~(DIRTY | MAYBE_DIRTY | CLEAN);
/**
* @param {import('#client').Signal} signal
* @param {number} status
* @returns {void}
*/
export function set_signal_status(signal, status) {
signal.f = (signal.f & STATUS_MASK) | status;
}
/**
* @template V
* @param {V | import('#client').Value<V>} val
* @returns {val is import('#client').Value<V>}
*/
export function is_signal(val) {
return (
typeof val === 'object' &&
val !== null &&
typeof (/** @type {import('#client').Value<V>} */ (val).f) === 'number'
);
}
/**
* Retrieves the context that belongs to the closest parent component with the specified `key`.
* Must be called during component initialisation.
*
* https://svelte.dev/docs/svelte#getcontext
* @template T
* @param {any} key
* @returns {T}
*/
export function getContext(key) {
const context_map = get_or_init_context_map('getContext');
const result = /** @type {T} */ (context_map.get(key));
if (DEV) {
const fn = /** @type {import('#client').ComponentContext} */ (current_component_context)
.function;
if (fn) {
add_owner(result, fn, true);
}
}
return result;
}
/**
* Associates an arbitrary `context` object with the current component and the specified `key`
* and returns that object. The context is then available to children of the component
* (including slotted content) with `getContext`.
*
* Like lifecycle functions, this must be called during component initialisation.
*
* https://svelte.dev/docs/svelte#setcontext
* @template T
* @param {any} key
* @param {T} context
* @returns {T}
*/
export function setContext(key, context) {
const context_map = get_or_init_context_map('setContext');
context_map.set(key, context);
return context;
}
/**
* Checks whether a given `key` has been set in the context of a parent component.
* Must be called during component initialisation.
*
* https://svelte.dev/docs/svelte#hascontext
* @param {any} key
* @returns {boolean}
*/
export function hasContext(key) {
const context_map = get_or_init_context_map('hasContext');
return context_map.has(key);
}
/**
* Retrieves the whole context map that belongs to the closest parent component.
* Must be called during component initialisation. Useful, for example, if you
* programmatically create a component and want to pass the existing context to it.
*
* https://svelte.dev/docs/svelte#getallcontexts
* @template {Map<any, any>} [T=Map<any, any>]
* @returns {T}
*/
export function getAllContexts() {
const context_map = get_or_init_context_map('getAllContexts');
if (DEV) {
const fn = current_component_context?.function;
if (fn) {
for (const value of context_map.values()) {
add_owner(value, fn, true);
}
}
}
return /** @type {T} */ (context_map);
}
/**
* @param {string} name
* @returns {Map<unknown, unknown>}
*/
function get_or_init_context_map(name) {
if (current_component_context === null) {
lifecycle_outside_component(name);
}
return (current_component_context.c ??= new Map(
get_parent_context(current_component_context) || undefined
));
}
/**
* @param {import('#client').ComponentContext} component_context
* @returns {Map<unknown, unknown> | null}
*/
function get_parent_context(component_context) {
let parent = component_context.p;
while (parent !== null) {
const context_map = parent.c;
if (context_map !== null) {
return context_map;
}
parent = parent.p;
}
return null;
}
/**
* @param {import('#client').Value<number>} signal
* @param {1 | -1} [d]
* @returns {number}
*/
export function update(signal, d = 1) {
var value = +get(signal);
set(signal, value + d);
return value;
}
/**
* @param {import('#client').Value<number>} signal
* @param {1 | -1} [d]
* @returns {number}
*/
export function update_pre(signal, d = 1) {
return set(signal, +get(signal) + d);
}
/**
* @param {Record<string, unknown>} obj
* @param {string[]} keys
* @returns {Record<string, unknown>}
*/
export function exclude_from_object(obj, keys) {
obj = { ...obj };
let key;
for (key of keys) {
delete obj[key];
}
return obj;
}
/**
* @template V
* @param {V} value
* @param {() => V} fallback lazy because could contain side effects
* @returns {V}
*/
export function value_or_fallback(value, fallback) {
return value === undefined ? fallback() : value;
}
/**
* @template V
* @param {V} value
* @param {() => Promise<V>} fallback lazy because could contain side effects
* @returns {Promise<V>}
*/
export async function value_or_fallback_async(value, fallback) {
return value === undefined ? fallback() : value;
}
/**
* @param {Record<string, unknown>} props
* @param {any} runes
* @param {Function} [fn]
* @returns {void}
*/
export function push(props, runes = false, fn) {
current_component_context = {
p: current_component_context,
c: null,
e: null,
m: false,
s: props,
x: null,
l: null
};
if (!runes) {
current_component_context.l = {
s: null,
u: null,
r1: [],
r2: source(false)
};
}
if (DEV) {
// component function
current_component_context.function = fn;
dev_current_component_function = fn;
}
}
/**
* @template {Record<string, any>} T
* @param {T} [component]
* @returns {T}
*/
export function pop(component) {
const context_stack_item = current_component_context;
if (context_stack_item !== null) {
if (component !== undefined) {
context_stack_item.x = component;
}
const effects = context_stack_item.e;
if (effects !== null) {
context_stack_item.e = null;
for (var i = 0; i < effects.length; i++) {
effect(effects[i]);
}
}
current_component_context = context_stack_item.p;
if (DEV) {
dev_current_component_function = context_stack_item.p?.function ?? null;
}
context_stack_item.m = true;
}
// Micro-optimization: Don't set .a above to the empty object
// so it can be garbage-collected when the return here is unused
return component || /** @type {T} */ ({});
}
/**
* Possibly traverse an object and read all its properties so that they're all reactive in case this is `$state`.
* Does only check first level of an object for performance reasons (heuristic should be good for 99% of all cases).
* @param {any} value
* @returns {void}
*/
export function deep_read_state(value) {
if (typeof value !== 'object' || !value || value instanceof EventTarget) {
return;
}
if (STATE_SYMBOL in value) {
deep_read(value);
} else if (!Array.isArray(value)) {
for (let key in value) {
const prop = value[key];
if (typeof prop === 'object' && prop && STATE_SYMBOL in prop) {
deep_read(prop);
}
}
}
}
/**
* Deeply traverse an object and read all its properties
* so that they're all reactive in case this is `$state`
* @param {any} value
* @param {Set<any>} visited
* @returns {void}
*/
export function deep_read(value, visited = new Set()) {
if (
typeof value === 'object' &&
value !== null &&
// We don't want to traverse DOM elements
!(value instanceof EventTarget) &&
!visited.has(value)
) {
visited.add(value);
// When working with a possible ReactiveDate, this
// will ensure we capture changes to it.
if (value instanceof Date) {
value.getTime();
}
for (let key in value) {
try {
deep_read(value[key], visited);
} catch (e) {
// continue
}
}
const proto = get_prototype_of(value);
if (
proto !== Object.prototype &&
proto !== Array.prototype &&
proto !== Map.prototype &&
proto !== Set.prototype &&
proto !== Date.prototype
) {
const descriptors = get_descriptors(proto);
for (let key in descriptors) {
const get = descriptors[key].get;
if (get) {
try {
get.call(value);
} catch (e) {
// continue
}
}
}
}
}
}
/**
* @template V
* @param {V | import('#client').Value<V>} value
* @returns {V}
*/
export function unwrap(value) {
if (is_signal(value)) {
// @ts-ignore
return get(value);
}
// @ts-ignore
return value;
}
if (DEV) {
/**
* @param {string} rune
*/
function throw_rune_error(rune) {
if (!(rune in globalThis)) {
// TODO if people start adjusting the "this can contain runes" config through v-p-s more, adjust this message
/** @type {any} */
let value; // let's hope noone modifies this global, but belts and braces
Object.defineProperty(globalThis, rune, {
configurable: true,
// eslint-disable-next-line getter-return
get: () => {
if (value !== undefined) {
return value;
}
e.rune_outside_svelte(rune);
},
set: (v) => {
value = v;
}
});
}
}
throw_rune_error('$state');
throw_rune_error('$effect');
throw_rune_error('$derived');
throw_rune_error('$inspect');
throw_rune_error('$props');
throw_rune_error('$bindable');
}
/**
* Expects a value that was wrapped with `freeze` and makes it frozen in DEV.
* @template T
* @param {T} value
* @returns {Readonly<T>}
*/
export function freeze(value) {
if (
typeof value === 'object' &&
value != null &&
!is_frozen(value) &&
!(STATE_FROZEN_SYMBOL in value)
) {
// If the object is already proxified, then snapshot the value
if (STATE_SYMBOL in value) {
value = snapshot(value);
}
define_property(value, STATE_FROZEN_SYMBOL, {
value: true,
writable: true,
enumerable: false
});
// Freeze the object in DEV
if (DEV) {
object_freeze(value);
}
}
return value;
}
|