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 | 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 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 2582x 2582x 2582x 2582x 2582x 2582x 2582x 2582x 2582x 2582x 2582x 2582x 2582x 2582x 2582x 2582x 2582x 2582x 2582x 2582x 2582x 2582x 2582x 2582x 2582x 2582x 2582x 2582x 918x 918x 2582x 2582x 1925x 1904x 1904x 21x 21x 1925x 2582x 2582x 2582x 2582x 2582x 2582x 2582x 2582x 2582x 2582x 2582x 2582x 2582x 2582x 2582x 2582x 2582x 149x 149x 149x 149x 149x 113x 149x 95x 90x 90x 67x 67x 90x 95x 149x 149x 149x 2582x 2582x 47x 47x 47x 47x 47x 47x 2582x 2582x 2582x 2582x 88x 88x 88x 88x 88x 88x 88x 88x 88x 88x 88x 88x 88x 88x 88x 88x 88x 88x 88x 88x 88x 88x 88x 88x 88x 88x 88x 88x 88x 88x 88x 88x 88x 88x 2582x 2582x 2582x 2582x 2582x 2582x 101x 101x 101x 101x 101x 2582x 2582x 2582x 2582x 2582x 2582x 2582x 8656x 2111x 2111x 8656x 2582x 2582x 142x 142x 2582x 2582x 1145x 1145x 1145x 1145x 2582x 2582x 2582x 2582x 2582x 2582x 2582x 2582x 2582x 628x 628x 628x 2582x 2582x 11x 11x 11x 42x 42x 11x 11x 11x 11x 11x 11x 11x 11x 11x 11x 11x 11x 2582x 2582x 26x 26x 26x 26x 2582x 2582x 3x 3x 2582x 2582x 2582x 2582x 6x 6x 6x 6x 6x 6x 2582x 2582x 2582x 2582x 2582x 2582x 2582x 2582x 2582x 2582x 2582x 2582x 2582x 2582x 2582x 2582x 2582x 4x 4x 4x 4x 4x 4x 4x 4x 4x 4x 4x 4x 4x 4x 4x 4x 4x 4x 4x 4x 4x 4x 4x 4x 4x 4x 4x 2582x 149x 149x 149x 149x 149x 149x 149x 149x 149x 149x 149x 149x 149x 149x 149x 149x 149x 149x 149x 149x 2578x 2429x 2429x 2582x 2582x 149x 149x 149x 149x 149x 149x 149x 2582x 2582x 2582x 2582x 2582x 2582x 2582x 2x 2x 2x 2x 2x 2x 2x 12x 12x 12x 12x 12x 12x 12x 12x 12x 12x 12x 12x 12x 12x 12x 12x 12x 12x 12x 12x 12x 12x 12x | /** @import { Program, Property, Statement, VariableDeclarator } from 'estree' */
/** @import { SvelteNode, ValidatedCompileOptions, ValidatedModuleCompileOptions } from '#compiler' */
/** @import { ComponentServerTransformState, ComponentVisitors, ServerTransformState, Visitors } from './types.js' */
/** @import { Analysis, ComponentAnalysis } from '../../types.js' */
import { walk } from 'zimmerframe';
import { set_scope } from '../../scope.js';
import { extract_identifiers } from '../../../utils/ast.js';
import * as b from '../../../utils/builders.js';
import { dev, filename } from '../../../state.js';
import { render_stylesheet } from '../css/index.js';
import { AssignmentExpression } from './visitors/AssignmentExpression.js';
import { AwaitBlock } from './visitors/AwaitBlock.js';
import { CallExpression } from './visitors/CallExpression.js';
import { ClassBody } from './visitors/ClassBody.js';
import { Component } from './visitors/Component.js';
import { ConstTag } from './visitors/ConstTag.js';
import { DebugTag } from './visitors/DebugTag.js';
import { EachBlock } from './visitors/EachBlock.js';
import { ExpressionStatement } from './visitors/ExpressionStatement.js';
import { Fragment } from './visitors/Fragment.js';
import { HtmlTag } from './visitors/HtmlTag.js';
import { Identifier } from './visitors/Identifier.js';
import { IfBlock } from './visitors/IfBlock.js';
import { KeyBlock } from './visitors/KeyBlock.js';
import { LabeledStatement } from './visitors/LabeledStatement.js';
import { MemberExpression } from './visitors/MemberExpression.js';
import { PropertyDefinition } from './visitors/PropertyDefinition.js';
import { RegularElement } from './visitors/RegularElement.js';
import { RenderTag } from './visitors/RenderTag.js';
import { SlotElement } from './visitors/SlotElement.js';
import { SnippetBlock } from './visitors/SnippetBlock.js';
import { SpreadAttribute } from './visitors/SpreadAttribute.js';
import { SvelteComponent } from './visitors/SvelteComponent.js';
import { SvelteElement } from './visitors/SvelteElement.js';
import { SvelteFragment } from './visitors/SvelteFragment.js';
import { SvelteHead } from './visitors/SvelteHead.js';
import { SvelteSelf } from './visitors/SvelteSelf.js';
import { TitleElement } from './visitors/TitleElement.js';
import { UpdateExpression } from './visitors/UpdateExpression.js';
import { VariableDeclaration } from './visitors/VariableDeclaration.js';
/** @type {Visitors} */
const global_visitors = {
_: set_scope,
AssignmentExpression,
CallExpression,
ClassBody,
ExpressionStatement,
Identifier,
LabeledStatement,
MemberExpression,
PropertyDefinition,
UpdateExpression,
VariableDeclaration
};
/** @type {ComponentVisitors} */
const template_visitors = {
AwaitBlock,
Component,
ConstTag,
DebugTag,
EachBlock,
Fragment,
HtmlTag,
IfBlock,
KeyBlock,
RegularElement,
RenderTag,
SlotElement,
SnippetBlock,
SpreadAttribute,
SvelteComponent,
SvelteElement,
SvelteFragment,
SvelteHead,
SvelteSelf,
TitleElement
};
/**
* @param {ComponentAnalysis} analysis
* @param {ValidatedCompileOptions} options
* @returns {Program}
*/
export function server_component(analysis, options) {
/** @type {ComponentServerTransformState} */
const state = {
analysis,
options,
scope: analysis.module.scope,
scopes: analysis.module.scopes,
hoisted: [b.import_all('$', 'svelte/internal/server')],
legacy_reactive_statements: new Map(),
// these are set inside the `Fragment` visitor, and cannot be used until then
init: /** @type {any} */ (null),
template: /** @type {any} */ (null),
namespace: options.namespace,
preserve_whitespace: options.preserveWhitespace,
private_derived: new Map(),
skip_hydration_boundaries: false
};
const module = /** @type {Program} */ (
walk(/** @type {SvelteNode} */ (analysis.module.ast), state, global_visitors)
);
const instance = /** @type {Program} */ (
walk(
/** @type {SvelteNode} */ (analysis.instance.ast),
{ ...state, scopes: analysis.instance.scopes },
{
...global_visitors,
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 {Program} */ (
walk(
/** @type {SvelteNode} */ (analysis.template.ast),
{ ...state, scopes: analysis.template.scopes },
// @ts-expect-error don't know, don't care
{ ...global_visitors, ...template_visitors }
)
);
/** @type {VariableDeclarator[]} */
const legacy_reactive_declarations = [];
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');
}
if (
node.body.type === 'ExpressionStatement' &&
node.body.expression.type === 'AssignmentExpression'
) {
for (const id of extract_identifiers(node.body.expression.left)) {
const binding = analysis.instance.scope.get(id.name);
if (binding?.kind === 'legacy_reactive') {
legacy_reactive_declarations.push(b.declarator(id));
}
}
}
instance.body.push(statement[1]);
}
if (legacy_reactive_declarations.length > 0) {
instance.body.unshift({
type: 'VariableDeclaration',
kind: 'let',
declarations: legacy_reactive_declarations
});
}
// If the component binds to a child, we need to put the template in a loop and repeat until legacy bindings are stable.
// We can remove this once the legacy syntax is gone.
if (analysis.uses_component_bindings) {
const snippets = template.body.filter(
// @ts-expect-error
(node) => node.type === 'FunctionDeclaration' && node.___snippet
);
const rest = template.body.filter(
// @ts-expect-error
(node) => node.type !== 'FunctionDeclaration' || !node.___snippet
);
template.body = [
...snippets,
b.let('$$settled', b.true),
b.let('$$inner_payload'),
b.stmt(
b.function(
b.id('$$render_inner'),
[b.id('$$payload')],
b.block(/** @type {Statement[]} */ (rest))
)
),
b.do_while(
b.unary('!', b.id('$$settled')),
b.block([
b.stmt(b.assignment('=', b.id('$$settled'), b.true)),
b.stmt(
b.assignment('=', b.id('$$inner_payload'), b.call('$.copy_payload', b.id('$$payload')))
),
b.stmt(b.call('$$render_inner', b.id('$$inner_payload')))
])
),
b.stmt(b.call('$.assign_payload', b.id('$$payload'), b.id('$$inner_payload')))
];
}
if (
[...analysis.instance.scope.declarations.values()].some(
(binding) => binding.kind === 'store_sub'
)
) {
instance.body.unshift(b.var('$$store_subs'));
template.body.push(
b.if(b.id('$$store_subs'), b.stmt(b.call('$.unsubscribe_stores', b.id('$$store_subs'))))
);
}
// Propagate values of bound props upwards if they're undefined in the parent and have a value.
// Don't do this as part of the props retrieval because people could eagerly mutate the prop in the instance script.
/** @type {Property[]} */
const props = [];
for (const [name, binding] of analysis.instance.scope.declarations) {
if (binding.kind === 'bindable_prop' && !name.startsWith('$$')) {
props.push(b.init(binding.prop_alias ?? name, b.id(name)));
}
}
for (const { name, alias } of analysis.exports) {
props.push(b.init(alias ?? name, b.id(name)));
}
if (props.length > 0) {
// This has no effect in runes mode other than throwing an error when someone passes
// undefined to a binding that has a default value.
template.body.push(b.stmt(b.call('$.bind_props', b.id('$$props'), b.object(props))));
}
const component_block = b.block([
.../** @type {Statement[]} */ (instance.body),
.../** @type {Statement[]} */ (template.body)
]);
let should_inject_context = dev || analysis.needs_context;
if (should_inject_context) {
component_block.body.unshift(b.stmt(b.call('$.push', dev && b.id(analysis.name))));
component_block.body.push(b.stmt(b.call('$.pop')));
}
if (analysis.uses_rest_props) {
/** @type {string[]} */
const named_props = analysis.exports.map(({ name, alias }) => alias ?? name);
for (const [name, binding] of analysis.instance.scope.declarations) {
if (binding.kind === 'bindable_prop') named_props.push(binding.prop_alias ?? name);
}
component_block.body.unshift(
b.const(
'$$restProps',
b.call(
'$.rest_props',
b.id('$$sanitized_props'),
b.array(named_props.map((name) => b.literal(name)))
)
)
);
}
if (analysis.uses_props || analysis.uses_rest_props) {
component_block.body.unshift(
b.const('$$sanitized_props', b.call('$.sanitize_props', b.id('$$props')))
);
}
if (analysis.uses_slots) {
component_block.body.unshift(b.const('$$slots', b.call('$.sanitize_slots', b.id('$$props'))));
}
const body = [...state.hoisted, ...module.body];
if (analysis.css.ast !== null && options.css === 'injected' && !options.customElement) {
const hash = b.literal(analysis.css.hash);
const code = b.literal(render_stylesheet(analysis.source, analysis, options).code);
body.push(b.const('$$css', b.object([b.init('hash', hash), b.init('code', code)])));
component_block.body.unshift(b.stmt(b.call('$$payload.css.add', b.id('$$css'))));
}
let should_inject_props =
should_inject_context ||
props.length > 0 ||
analysis.needs_props ||
analysis.uses_props ||
analysis.uses_rest_props ||
analysis.uses_slots ||
analysis.slot_names.size > 0;
const component_function = b.function_declaration(
b.id(analysis.name),
should_inject_props ? [b.id('$$payload'), b.id('$$props')] : [b.id('$$payload')],
component_block
);
if (options.compatibility.componentApi === 4) {
body.unshift(b.imports([['render', '$$_render']], 'svelte/server'));
body.push(
component_function,
b.stmt(
b.assignment(
'=',
b.member_id(`${analysis.name}.render`),
b.function(
null,
[b.id('$$props'), b.id('$$opts')],
b.block([
b.return(
b.call(
'$$_render',
b.id(analysis.name),
b.object([
b.init('props', b.id('$$props')),
b.init('context', b.member(b.id('$$opts'), 'context', false, true))
])
)
)
])
)
)
),
b.export_default(b.id(analysis.name))
);
} else if (dev) {
body.push(
component_function,
b.stmt(
b.assignment(
'=',
b.member_id(`${analysis.name}.render`),
b.function(
null,
[],
b.block([
b.throw_error(
`Component.render(...) is no longer valid in Svelte 5. ` +
'See https://svelte-5-preview.vercel.app/docs/breaking-changes#components-are-no-longer-classes for more information'
)
])
)
)
),
b.export_default(b.id(analysis.name))
);
} else {
body.push(b.export_default(component_function));
}
if (dev) {
// add `App[$.FILENAME] = 'App.svelte'` so that we can print useful messages later
body.unshift(
b.stmt(
b.assignment('=', b.member(b.id(analysis.name), '$.FILENAME', true), b.literal(filename))
)
);
}
return {
type: 'Program',
sourceType: 'module',
body
};
}
/**
* @param {Analysis} analysis
* @param {ValidatedModuleCompileOptions} options
* @returns {Program}
*/
export function server_module(analysis, options) {
/** @type {ServerTransformState} */
const state = {
analysis,
options,
scope: analysis.module.scope,
scopes: analysis.module.scopes,
// this is an anomaly — it can only be used in components, but it needs
// to be present for `javascript_visitors_legacy` and so is included in module
// transform state as well as component transform state
legacy_reactive_statements: new Map(),
private_derived: new Map()
};
const module = /** @type {Program} */ (
walk(/** @type {SvelteNode} */ (analysis.module.ast), state, global_visitors)
);
return {
type: 'Program',
sourceType: 'module',
body: [b.import_all('$', 'svelte/internal/server'), ...module.body]
};
}
|