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 | 2x 2x 2x 2x 2x 2x 2x 2x 2x 2x 2x 2x 2x 2x 2x 2x 2x 6657x 6657x 6657x 6657x 6657x 26628x 159181x 159181x 159181x 159181x 159181x 26628x 6657x 6657x 6657x 2x 2x 2x 2x 2x 2x 2x 2x 2217x 2217x 2217x 2217x 2217x 2217x 2217x 2217x 2217x 2217x 2217x 2217x 2217x 2217x 2217x 2217x 2217x 2217x 2217x 2217x 2217x 2217x 2217x 2217x 2217x 2217x 2217x 2217x 2217x 2217x 2217x 2217x 2217x 2217x 2217x 2217x 2217x 2217x 2217x 2217x 2217x 2217x 2217x 2217x 2217x 2217x 2217x 2217x 2217x 2217x 2217x 2217x 2217x 2217x 2217x 2217x 2217x 2217x 2217x 766x 766x 2217x 2217x 1783x 1764x 1764x 19x 19x 1783x 2217x 2217x 2217x 2217x 2217x 2217x 2217x 2217x 2217x 2217x 2217x 2217x 2217x 2217x 2217x 2217x 2217x 2217x 2217x 2217x 1795x 665x 2x 2x 2x 2x 665x 1795x 2216x 2216x 2216x 2216x 2216x 2216x 2216x 2216x 7769x 64x 64x 7769x 132x 87x 87x 87x 87x 87x 132x 132x 132x 132x 132x 132x 132x 132x 132x 132x 132x 132x 132x 9x 9x 9x 9x 9x 132x 132x 132x 132x 7769x 2216x 2216x 143x 143x 143x 143x 2216x 2216x 107x 107x 2216x 2216x 2216x 2216x 2216x 2216x 2216x 34x 34x 2216x 2216x 2216x 136x 136x 136x 124x 124x 12x 136x 2216x 2216x 2216x 2216x 7769x 2216x 2216x 2217x 65x 65x 65x 65x 22x 8x 8x 22x 65x 65x 65x 65x 65x 65x 65x 65x 65x 65x 65x 65x 2216x 2216x 1620x 1913x 1913x 1913x 1913x 1913x 1913x 1913x 1913x 1913x 1913x 1913x 1913x 1913x 1620x 2216x 2216x 4x 4x 4x 4x 4x 4x 4x 4x 4x 4x 4x 4x 4x 4x 4x 2216x 97x 97x 2216x 2216x 2216x 2216x 2216x 2216x 2216x 2216x 2216x 2216x 2217x 2217x 2217x 2217x 2217x 1795x 1795x 122x 122x 122x 122x 122x 122x 122x 122x 122x 122x 122x 1795x 2216x 2216x 2216x 2217x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 2217x 2217x 2217x 2217x 2217x 2217x 2217x 2217x 2217x 2217x 2217x 1326x 1326x 1326x 1326x 1326x 1326x 1326x 1326x 2216x 2216x 8x 8x 33x 33x 8x 8x 8x 8x 8x 8x 8x 8x 8x 8x 8x 8x 2216x 2217x 22x 22x 22x 22x 22x 22x 22x 22x 22x 22x 2216x 2216x 3x 3x 2216x 2216x 2216x 2217x 2217x 2217x 2217x 2217x 2217x 2217x 2217x 2217x 2217x 2217x 2217x 2217x 2217x 2217x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 2216x 2215x 2215x 2216x 2216x 97x 97x 97x 97x 97x 97x 97x 97x 97x 97x 97x 97x 2216x 2216x 2216x 2216x 2216x 2216x 4x 4x 4x 4x 4x 4x 4x 4x 4x 4x 4x 4x 4x 2216x 97x 97x 97x 97x 97x 97x 97x 97x 97x 97x 2216x 2216x 124x 124x 124x 124x 2216x 2216x 2216x 2216x 2216x 2216x 2216x 2216x 2216x 2x 2x 2x 2x 2x 2x 2x 6x 6x 6x 6x 6x 6x 6x 6x 6x 6x 6x 6x 6x 6x 6x 6x 6x 6x 6x 6x 6x 6x 6x 6x 6x 6x 6x 6x 6x 6x 6x 6x | import { walk } from 'zimmerframe';
import * as b from '../../../utils/builders.js';
import { set_scope } from '../../scope.js';
import { template_visitors } from './visitors/template.js';
import { global_visitors } from './visitors/global.js';
import { javascript_visitors } from './visitors/javascript.js';
import { javascript_visitors_runes } from './visitors/javascript-runes.js';
import { javascript_visitors_legacy } from './visitors/javascript-legacy.js';
import { serialize_get_binding } from './utils.js';
import { render_stylesheet } from '../css/index.js';
import { filename } from '../../../state.js';
/**
* This function ensures visitor sets don't accidentally clobber each other
* @param {...import('./types').Visitors} array
* @returns {import('./types').Visitors}
*/
function combine_visitors(...array) {
/** @type {Record<string, any>} */
const visitors = {};
for (const member of array) {
for (const key in member) {
if (visitors[key]) {
throw new Error(`Duplicate visitor: ${key}`);
}
// @ts-ignore
visitors[key] = member[key];
}
}
return visitors;
}
/**
* @param {string} source
* @param {import('../../types').ComponentAnalysis} analysis
* @param {import('#compiler').ValidatedCompileOptions} options
* @returns {import('estree').Program}
*/
export function client_component(source, analysis, options) {
/** @type {import('./types').ComponentClientTransformState} */
const state = {
analysis,
options,
scope: analysis.module.scope,
scopes: analysis.template.scopes,
hoisted: [b.import_all('$', 'svelte/internal/client')],
node: /** @type {any} */ (null), // populated by the root node
legacy_reactive_statements: new Map(),
metadata: {
context: {
template_needs_import_node: false,
template_contains_script_tag: false
},
namespace: options.namespace,
bound_contenteditable: false
},
events: new Set(),
preserve_whitespace: options.preserveWhitespace,
public_state: new Map(),
private_state: new Map(),
in_constructor: false,
// these are set inside the `Fragment` visitor, and cannot be used until then
before_init: /** @type {any} */ (null),
init: /** @type {any} */ (null),
update: /** @type {any} */ (null),
after_update: /** @type {any} */ (null),
template: /** @type {any} */ (null),
locations: /** @type {any} */ (null)
};
const module = /** @type {import('estree').Program} */ (
walk(
/** @type {import('#compiler').SvelteNode} */ (analysis.module.ast),
state,
combine_visitors(
set_scope(analysis.module.scopes),
global_visitors,
// @ts-expect-error TODO
javascript_visitors,
analysis.runes ? javascript_visitors_runes : javascript_visitors_legacy
)
)
);
const instance_state = { ...state, scope: analysis.instance.scope };
const instance = /** @type {import('estree').Program} */ (
walk(
/** @type {import('#compiler').SvelteNode} */ (analysis.instance.ast),
instance_state,
combine_visitors(
set_scope(analysis.instance.scopes),
global_visitors,
// @ts-expect-error TODO
javascript_visitors,
analysis.runes ? javascript_visitors_runes : javascript_visitors_legacy,
{
ImportDeclaration(node) {
state.hoisted.push(node);
return b.empty;
},
ExportNamedDeclaration(node, context) {
if (node.declaration) {
return context.visit(node.declaration);
}
return b.empty;
}
}
)
)
);
const template = /** @type {import('estree').Program} */ (
walk(
/** @type {import('#compiler').SvelteNode} */ (analysis.template.ast),
{ ...state, scope: analysis.instance.scope },
combine_visitors(
set_scope(analysis.template.scopes),
global_visitors,
// @ts-expect-error TODO
template_visitors
)
)
);
// Very very dirty way of making import statements reactive in legacy mode if needed
if (!analysis.runes) {
for (const [name, binding] of analysis.module.scope.declarations) {
if (binding.kind === 'legacy_reactive_import') {
instance.body.unshift(
b.var('$$_import_' + name, b.call('$.reactive_import', b.thunk(b.id(name))))
);
}
}
}
/** @type {import('estree').Statement[]} */
const store_setup = [];
/** @type {import('estree').VariableDeclaration[]} */
const legacy_reactive_declarations = [];
for (const [name, binding] of analysis.instance.scope.declarations) {
if (binding.kind === 'legacy_reactive') {
legacy_reactive_declarations.push(b.const(name, b.call('$.mutable_source')));
}
if (binding.kind === 'store_sub') {
if (store_setup.length === 0) {
store_setup.push(
b.const('$$subscriptions', b.object([])),
b.stmt(b.call('$.unsubscribe_on_destroy', b.id('$$subscriptions')))
);
}
// We're creating an arrow function that gets the store value which minifies better for two or more references
const store_reference = serialize_get_binding(b.id(name.slice(1)), instance_state);
const store_get = b.call(
'$.store_get',
store_reference,
b.literal(name),
b.id('$$subscriptions')
);
store_setup.push(
b.const(
binding.node,
options.dev
? b.thunk(
b.sequence([
b.call('$.validate_store', store_reference, b.literal(name.slice(1))),
store_get
])
)
: b.thunk(store_get)
)
);
}
}
for (const [node] of analysis.reactive_statements) {
const statement = [...state.legacy_reactive_statements].find(([n]) => n === node);
if (statement === undefined) {
throw new Error('Could not find reactive statement');
}
instance.body.push(statement[1]);
}
if (analysis.reactive_statements.size > 0) {
instance.body.push(b.stmt(b.call('$.legacy_pre_effect_reset')));
}
/**
* Used to store the group nodes
* @type {import('estree').VariableDeclaration[]}
*/
const group_binding_declarations = [];
for (const group of analysis.binding_groups.values()) {
group_binding_declarations.push(b.const(group.name, b.array([])));
}
/** @type {Array<import('estree').Property | import('estree').SpreadElement>} */
const component_returned_object = analysis.exports.map(({ name, alias }) => {
const expression = serialize_get_binding(b.id(name), instance_state);
if (expression.type === 'Identifier' && !options.dev) {
return b.init(alias ?? name, expression);
}
return b.get(alias ?? name, [b.return(expression)]);
});
const properties = [...analysis.instance.scope.declarations].filter(
([name, binding]) =>
(binding.kind === 'prop' || binding.kind === 'bindable_prop') && !name.startsWith('$$')
);
if (analysis.runes && options.dev) {
const exports = analysis.exports.map(({ name, alias }) => b.literal(alias ?? name));
/** @type {import('estree').Literal[]} */
const bindable = [];
for (const [name, binding] of properties) {
if (binding.kind === 'bindable_prop') {
bindable.push(b.literal(binding.prop_alias ?? name));
}
}
instance.body.unshift(
b.stmt(
b.call(
'$.validate_prop_bindings',
b.id('$$props'),
b.array(bindable),
b.array(exports),
b.id(`${analysis.name}`)
)
)
);
}
if (analysis.accessors) {
for (const [name, binding] of properties) {
const key = binding.prop_alias ?? name;
const getter = b.get(key, [b.return(b.call(b.id(name)))]);
const setter = b.set(key, [
b.stmt(b.call(b.id(name), b.id('$$value'))),
b.stmt(b.call('$.flush_sync'))
]);
if (analysis.runes && binding.initial) {
// turn `set foo($$value)` into `set foo($$value = expression)`
setter.value.params[0] = {
type: 'AssignmentPattern',
left: b.id('$$value'),
right: /** @type {import('estree').Expression} */ (binding.initial)
};
}
component_returned_object.push(getter, setter);
}
}
if (options.legacy.componentApi) {
component_returned_object.push(
b.init('$set', b.id('$.update_legacy_props')),
b.init(
'$on',
b.arrow(
[b.id('$$event_name'), b.id('$$event_cb')],
b.call(
'$.add_legacy_event_listener',
b.id('$$props'),
b.id('$$event_name'),
b.id('$$event_cb')
)
)
)
);
} else if (options.dev) {
component_returned_object.push(b.spread(b.call(b.id('$.legacy_api'))));
}
const push_args = [b.id('$$props'), b.literal(analysis.runes)];
if (options.dev) push_args.push(b.id(analysis.name));
const component_block = b.block([
...store_setup,
...legacy_reactive_declarations,
...group_binding_declarations,
...analysis.top_level_snippets,
.../** @type {import('estree').Statement[]} */ (instance.body),
analysis.runes || !analysis.needs_context ? b.empty : b.stmt(b.call('$.init')),
.../** @type {import('estree').Statement[]} */ (template.body)
]);
if (!analysis.runes) {
// Bind static exports to props so that people can access them with bind:x
for (const { name, alias } of analysis.exports) {
component_block.body.push(
b.stmt(
b.call(
'$.bind_prop',
b.id('$$props'),
b.literal(alias ?? name),
serialize_get_binding(b.id(name), instance_state)
)
)
);
}
}
const append_styles =
analysis.inject_styles && analysis.css.ast
? () =>
component_block.body.push(
b.stmt(
b.call(
'$.append_styles',
b.id('$$anchor'),
b.literal(analysis.css.hash),
b.literal(render_stylesheet(source, analysis, options).code)
)
)
)
: () => {};
append_styles();
const should_inject_context =
analysis.needs_context ||
analysis.reactive_statements.size > 0 ||
component_returned_object.length > 0 ||
options.dev;
if (should_inject_context) {
component_block.body.unshift(b.stmt(b.call('$.push', ...push_args)));
component_block.body.push(
component_returned_object.length > 0
? b.return(b.call('$.pop', b.object(component_returned_object)))
: b.stmt(b.call('$.pop'))
);
}
if (analysis.uses_rest_props) {
const named_props = analysis.exports.map(({ name, alias }) => alias ?? name);
for (const [name, binding] of analysis.instance.scope.declarations) {
if (binding.kind === 'bindable_prop') named_props.push(binding.prop_alias ?? name);
}
component_block.body.unshift(
b.const(
'$$restProps',
b.call(
'$.legacy_rest_props',
b.id('$$sanitized_props'),
b.array(named_props.map((name) => b.literal(name)))
)
)
);
}
if (analysis.uses_props || analysis.uses_rest_props) {
const to_remove = [b.literal('children'), b.literal('$$slots'), b.literal('$$events')];
if (analysis.custom_element) {
to_remove.push(b.literal('$$host'));
}
component_block.body.unshift(
b.const(
'$$sanitized_props',
b.call('$.legacy_rest_props', b.id('$$props'), b.array(to_remove))
)
);
}
if (analysis.uses_slots) {
component_block.body.unshift(b.const('$$slots', b.call('$.sanitize_slots', b.id('$$props'))));
}
let should_inject_props =
should_inject_context ||
analysis.needs_props ||
analysis.uses_props ||
analysis.uses_rest_props ||
analysis.uses_slots ||
analysis.slot_names.size > 0;
const body = [...state.hoisted, ...module.body];
const component = b.function_declaration(
b.id(analysis.name),
should_inject_props ? [b.id('$$anchor'), b.id('$$props')] : [b.id('$$anchor')],
component_block
);
if (options.hmr) {
const accept_fn = b.arrow(
[b.id('module')],
b.block([b.stmt(b.call('$.set', b.id('s'), b.member(b.id('module'), b.id('default'))))])
);
body.push(
component,
b.if(
b.id('import.meta.hot'),
b.block([
b.const(b.id('s'), b.call('$.source', b.id(analysis.name))),
b.const(b.id('filename'), b.member(b.id(analysis.name), b.id('filename'))),
b.stmt(b.assignment('=', b.id(analysis.name), b.call('$.hmr', b.id('s')))),
b.stmt(
b.assignment('=', b.member(b.id(analysis.name), b.id('filename')), b.id('filename'))
),
b.if(
b.id('import.meta.hot.acceptExports'),
b.block([
b.stmt(
b.call('import.meta.hot.acceptExports', b.array([b.literal('default')]), accept_fn)
)
]),
b.block([b.stmt(b.call('import.meta.hot.accept', accept_fn))])
)
])
),
b.export_default(b.id(analysis.name))
);
} else {
body.push(b.export_default(component));
}
if (options.dev) {
if (filename) {
// add `App.filename = 'App.svelte'` so that we can print useful messages later
body.unshift(
b.stmt(
b.assignment('=', b.member(b.id(analysis.name), b.id('filename')), b.literal(filename))
)
);
}
body.unshift(b.stmt(b.call(b.id('$.mark_module_start'))));
body.push(b.stmt(b.call(b.id('$.mark_module_end'), b.id(analysis.name))));
}
if (options.discloseVersion) {
body.unshift(b.imports([], 'svelte/internal/disclose-version'));
}
if (options.legacy.componentApi) {
body.unshift(b.imports([['createClassComponent', '$$_createClassComponent']], 'svelte/legacy'));
component_block.body.unshift(
b.if(
b.binary('===', b.id('new.target'), b.id(analysis.name)),
b.return(
b.call(
'$$_createClassComponent',
// When called with new, the first argument is the constructor options
b.object([b.init('component', b.id(analysis.name)), b.spread(b.id('$$anchor'))])
)
)
)
);
} else if (options.dev) {
component_block.body.unshift(
b.if(
b.binary('===', b.id('new.target'), b.id(analysis.name)),
b.throw_error(
`Instantiating a component with \`new\` is no longer valid in Svelte 5. ` +
'See https://svelte-5-preview.vercel.app/docs/breaking-changes#components-are-no-longer-classes for more information'
)
)
);
}
if (state.events.size > 0) {
body.push(
b.stmt(b.call('$.delegate', b.array(Array.from(state.events).map((name) => b.literal(name)))))
);
}
if (analysis.custom_element) {
const ce = analysis.custom_element;
/** @type {import('estree').Property[]} */
const props_str = [];
for (const [name, binding] of properties) {
const key = binding.prop_alias ?? name;
const prop_def = typeof ce === 'boolean' ? {} : ce.props?.[key] || {};
if (
!prop_def.type &&
binding.initial?.type === 'Literal' &&
typeof binding.initial.value === 'boolean'
) {
prop_def.type = 'Boolean';
}
const value = b.object(
/** @type {import('estree').Property[]} */ (
[
prop_def.attribute ? b.init('attribute', b.literal(prop_def.attribute)) : undefined,
prop_def.reflect ? b.init('reflect', b.literal(true)) : undefined,
prop_def.type ? b.init('type', b.literal(prop_def.type)) : undefined
].filter(Boolean)
)
);
props_str.push(b.init(key, value));
}
const slots_str = b.array([...analysis.slot_names.keys()].map((name) => b.literal(name)));
const accessors_str = b.array(
analysis.exports.map(({ name, alias }) => b.literal(alias ?? name))
);
const use_shadow_dom = typeof ce === 'boolean' || ce.shadow !== 'none' ? true : false;
const create_ce = b.call(
'$.create_custom_element',
b.id(analysis.name),
b.object(props_str),
slots_str,
accessors_str,
b.literal(use_shadow_dom),
/** @type {any} */ (typeof ce !== 'boolean' ? ce.extend : undefined)
);
// If customElement option is set, we define the custom element directly. Else we still create
// the custom element class so that the user may instantiate a custom element themselves later.
if (typeof ce !== 'boolean') {
body.push(b.stmt(b.call('customElements.define', b.literal(ce.tag), create_ce)));
} else {
body.push(b.stmt(create_ce));
}
}
return {
type: 'Program',
sourceType: 'module',
body
};
}
/**
* @param {import('../../types').Analysis} analysis
* @param {import('#compiler').ValidatedModuleCompileOptions} options
* @returns {import('estree').Program}
*/
export function client_module(analysis, options) {
/** @type {import('./types').ClientTransformState} */
const state = {
analysis,
options,
scope: analysis.module.scope,
scopes: analysis.module.scopes,
legacy_reactive_statements: new Map(),
public_state: new Map(),
private_state: new Map(),
in_constructor: false
};
const module = /** @type {import('estree').Program} */ (
walk(
/** @type {import('#compiler').SvelteNode} */ (analysis.module.ast),
state,
combine_visitors(
set_scope(analysis.module.scopes),
global_visitors,
// @ts-expect-error
javascript_visitors,
javascript_visitors_runes
)
)
);
return {
type: 'Program',
sourceType: 'module',
body: [b.import_all('$', 'svelte/internal/client'), ...module.body]
};
}
|