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 | 2x 2x 2x 2x 2x 2x 2x 2x 2x 2x 2x 2x 2x 2x 2x 2x 2x 2x 2x 2x 2x 2x 666x 666x 666x 589x 666x 77x 77x 589x 589x 2x 2x 2x 2x 2x 2x 12415x 12415x 12415x 12415x 12415x 12415x 12415x 12415x 12415x 12415x 12415x 12415x 12415x 12415x 12415x 12415x 29183x 248x 248x 248x 434x 248x 248x 248x 248x 248x 248x 248x 248x 984x 984x 984x 816x 816x 816x 984x 248x 248x 248x 434x 434x 29183x 28935x 28935x 29183x 12415x 12415x 12300x 12300x 115x 115x 115x 115x 10481x 434x 1094x 58x 58x 1094x 434x 115x 115x 12415x 1x 1x 1x 114x 114x 114x 114x 114x 114x 464x 218x 218x 246x 464x 590x 590x 590x 246x 246x 246x 114x 10349x 432x 432x 114x 114x 114x 2x 2x 2x 2x 2x 2x 2x 2x 2x 2x 2x 2x 2x 2x 2x 2x 2x 15674x 15674x 15674x 15674x 15674x 15674x 15674x 15674x 15674x 15674x 15674x 15674x 12415x 12415x 15673x 15673x 15673x 15673x 15673x 15673x 15673x 15673x 37590x 89x 89x 37501x 37501x 37557x 37590x 37590x 37590x 37590x 37590x 37590x 37105x 37590x 478x 478x 37590x 37023x 37023x 37590x 15673x 15673x 15673x 15673x 15559x 15559x 15559x 15559x 15559x 15559x 15559x 11583x 15559x 8260x 8260x 15559x 15559x 3323x 3323x 3323x 15559x 15559x 15559x 15559x 6408x 15559x 3958x 3958x 15559x 15559x 2450x 2450x 2450x 15559x 15559x 15559x 15559x 15559x 15305x 7348x 7348x 7348x 7348x 7348x 7348x 7348x 7348x 15559x 15559x 15559x 15559x 15559x 15559x 15559x 24690x 24690x 24690x 24690x 24690x 8160x 6900x 6900x 6900x 6900x 6900x 6900x 6900x 6900x 6900x 6900x 6900x 8160x 6105x 6105x 6105x 8160x 8017x 8017x 24690x 16530x 16530x 24690x 15559x 15673x 15673x 15673x 15673x 15673x 15673x 15673x 15673x 15673x 15673x 15673x 15673x 15673x 10152x 10122x 10122x 743x 743x 15674x 15674x 15674x 15674x 15674x 15674x 15674x 15674x 15674x 5213x 15674x 15674x 2x 2x 2x 2x 2x 2x 2x 2x 8070x 8069x 8069x 8069x 132x 12x 12x 132x 132x 7937x 7937x 7937x 8069x 8069x 8069x 8069x 8069x 8069x 2382x 8069x 5643x 5643x 3975x 3975x 5643x 8069x 3963x 3963x 3963x 2x 2x 2x 2x 2x 2x 2x 2x 5643x 5643x 5643x 5643x 5643x 5643x 3993x 3887x 3887x 3993x 92x 92x 5643x 5643x 5643x 12173x 12173x 12173x 12173x 12173x 17211x 17211x 17211x 17211x 17211x 17211x 17211x 17211x 11126x 17211x 13468x 13468x 12173x 12173x 12173x 12173x 7383x 348x 348x 7383x 12173x 12173x 12173x 12173x 12173x 1756x 1756x 1756x 2x 2x 2x 2x 2x 2x 2x 2x 7742x 1x 1x 7741x 7741x 10x 10x 7731x 7741x 178x 178x 7553x 7742x 7742x 2x 2x 2x 2x 2x 2x 2x 24x 24x 24x 24x 22x 24x 4x 4x 4x 4x 4x 4x 4x 4x 4x 4x 4x 24x 18x 18x 18x 24x | /** @import { Context } from 'zimmerframe' */
/** @import { TransformState } from './types.js' */
/** @import * as Compiler from '#compiler' */
/** @import { Node, Expression, CallExpression } from 'estree' */
import {
regex_ends_with_whitespaces,
regex_not_whitespace,
regex_starts_with_whitespaces
} from '../patterns.js';
import * as b from '../../utils/builders.js';
import * as e from '../../errors.js';
import { walk } from 'zimmerframe';
import { extract_identifiers } from '../../utils/ast.js';
import check_graph_for_cycles from '../2-analyze/utils/check_graph_for_cycles.js';
import is_reference from 'is-reference';
import { set_scope } from '../scope.js';
/**
* @param {Node} node
* @returns {boolean}
*/
export function is_hoistable_function(node) {
if (
node.type === 'ArrowFunctionExpression' ||
node.type === 'FunctionExpression' ||
node.type === 'FunctionDeclaration'
) {
return node.metadata?.hoistable === true;
}
return false;
}
/**
* Match Svelte 4 behaviour by sorting ConstTag nodes in topological order
* @param {Compiler.SvelteNode[]} nodes
* @param {TransformState} state
*/
function sort_const_tags(nodes, state) {
/**
* @typedef {{
* node: Compiler.ConstTag;
* deps: Set<Compiler.Binding>;
* }} Tag
*/
const other = [];
/** @type {Map<Compiler.Binding, Tag>} */
const tags = new Map();
const { _ } = set_scope(state.scopes);
for (const node of nodes) {
if (node.type === 'ConstTag') {
const declaration = node.declaration.declarations[0];
const bindings = extract_identifiers(declaration.id).map((id) => {
return /** @type {Compiler.Binding} */ (state.scope.get(id.name));
});
/** @type {Set<Compiler.Binding>} */
const deps = new Set();
walk(declaration.init, state, {
_,
Identifier(node, context) {
const parent = /** @type {Expression} */ (context.path.at(-1));
if (is_reference(node, parent)) {
const binding = context.state.scope.get(node.name);
if (binding) deps.add(binding);
}
}
});
for (const binding of bindings) {
tags.set(binding, { node, deps });
}
} else {
other.push(node);
}
}
if (tags.size === 0) {
return nodes;
}
/** @type {Array<[Compiler.Binding, Compiler.Binding]>} */
const edges = [];
for (const [id, tag] of tags) {
for (const dep of tag.deps) {
if (tags.has(dep)) {
edges.push([id, dep]);
}
}
}
const cycle = check_graph_for_cycles(edges);
if (cycle?.length) {
const tag = /** @type {Tag} */ (tags.get(cycle[0]));
e.const_tag_cycle(tag.node, cycle.map((binding) => binding.node.name).join(' → '));
}
/** @type {Compiler.ConstTag[]} */
const sorted = [];
/** @param {Tag} tag */
function add(tag) {
if (sorted.includes(tag.node)) {
return;
}
for (const dep of tag.deps) {
const dep_tag = tags.get(dep);
if (dep_tag) add(dep_tag);
}
sorted.push(tag.node);
}
for (const tag of tags.values()) {
add(tag);
}
return [...sorted, ...other];
}
/**
* Extract nodes that are hoisted and trim whitespace according to the following rules:
* - trim leading and trailing whitespace, regardless of surroundings
* - keep leading / trailing whitespace of inbetween text nodes,
* unless it's whitespace-only, in which case collapse to a single whitespace for all cases
* except when it's children of certain elements where we know ignore whitespace (like td/option/head),
* in which case we remove it entirely
* @param {Compiler.SvelteNode} parent
* @param {Compiler.SvelteNode[]} nodes
* @param {Compiler.SvelteNode[]} path
* @param {Compiler.Namespace} namespace
* @param {TransformState & { options: Compiler.ValidatedCompileOptions }} state
* @param {boolean} preserve_whitespace
* @param {boolean} preserve_comments
*/
export function clean_nodes(
parent,
nodes,
path,
namespace = 'html',
state,
// TODO give these defaults (state.options.preserveWhitespace and state.options.preserveComments).
// first, we need to make `Component(Client|Server)TransformState` inherit from a new `ComponentTransformState`
// rather than from `ClientTransformState` and `ServerTransformState`
preserve_whitespace,
preserve_comments
) {
if (!state.analysis.runes) {
nodes = sort_const_tags(nodes, state);
}
/** @type {Compiler.SvelteNode[]} */
const hoisted = [];
/** @type {Compiler.SvelteNode[]} */
const regular = [];
for (const node of nodes) {
if (node.type === 'Comment' && !preserve_comments) {
continue;
}
if (
node.type === 'ConstTag' ||
node.type === 'DebugTag' ||
node.type === 'SvelteBody' ||
node.type === 'SvelteWindow' ||
node.type === 'SvelteDocument' ||
node.type === 'SvelteHead' ||
node.type === 'TitleElement' ||
node.type === 'SnippetBlock'
) {
// TODO others?
hoisted.push(node);
} else {
regular.push(node);
}
}
let trimmed = regular;
if (!preserve_whitespace) {
trimmed = [];
let first, last;
while (
(first = regular[0]) &&
first.type === 'Text' &&
!regex_not_whitespace.test(first.data)
) {
regular.shift();
}
if (first?.type === 'Text') {
first.raw = first.raw.replace(regex_starts_with_whitespaces, '');
first.data = first.data.replace(regex_starts_with_whitespaces, '');
}
while (
(last = regular.at(-1)) &&
last.type === 'Text' &&
!regex_not_whitespace.test(last.data)
) {
regular.pop();
}
if (last?.type === 'Text') {
last.raw = last.raw.replace(regex_ends_with_whitespaces, '');
last.data = last.data.replace(regex_ends_with_whitespaces, '');
}
const can_remove_entirely =
(namespace === 'svg' &&
(parent.type !== 'RegularElement' || parent.name !== 'text') &&
!path.some((n) => n.type === 'RegularElement' && n.name === 'text')) ||
(parent.type === 'RegularElement' &&
// TODO others?
(parent.name === 'select' ||
parent.name === 'tr' ||
parent.name === 'table' ||
parent.name === 'tbody' ||
parent.name === 'thead' ||
parent.name === 'tfoot' ||
parent.name === 'colgroup' ||
parent.name === 'datalist'));
// Replace any whitespace between a text and non-text node with a single spaceand keep whitespace
// as-is within text nodes, or between text nodes and expression tags (because in the end they count
// as one text). This way whitespace is mostly preserved when using CSS with `white-space: pre-line`
// and default slot content going into a pre tag (which we can't see).
for (let i = 0; i < regular.length; i++) {
const prev = regular[i - 1];
const node = regular[i];
const next = regular[i + 1];
if (node.type === 'Text') {
if (prev?.type !== 'ExpressionTag') {
const prev_is_text_ending_with_whitespace =
prev?.type === 'Text' && regex_ends_with_whitespaces.test(prev.data);
node.data = node.data.replace(
regex_starts_with_whitespaces,
prev_is_text_ending_with_whitespace ? '' : ' '
);
node.raw = node.raw.replace(
regex_starts_with_whitespaces,
prev_is_text_ending_with_whitespace ? '' : ' '
);
}
if (next?.type !== 'ExpressionTag') {
node.data = node.data.replace(regex_ends_with_whitespaces, ' ');
node.raw = node.raw.replace(regex_ends_with_whitespaces, ' ');
}
if (node.data && (node.data !== ' ' || !can_remove_entirely)) {
trimmed.push(node);
}
} else {
trimmed.push(node);
}
}
}
var first = trimmed[0];
return {
hoisted,
trimmed,
/**
* In a case like `{#if x}<Foo />{/if}`, we don't need to wrap the child in
* comments — we can just use the parent block's anchor for the component.
* TODO extend this optimisation to other cases
*/
is_standalone:
trimmed.length === 1 &&
((first.type === 'RenderTag' && !first.metadata.dynamic) ||
(first.type === 'Component' &&
!state.options.hmr &&
!first.attributes.some(
(attribute) => attribute.type === 'Attribute' && attribute.name.startsWith('--')
))),
/** if a component or snippet starts with text, we need to add an anchor comment so that its text node doesn't get fused with its surroundings */
is_text_first:
(parent.type === 'Fragment' ||
parent.type === 'SnippetBlock' ||
parent.type === 'SvelteComponent' ||
parent.type === 'Component' ||
parent.type === 'SvelteSelf') &&
first &&
(first?.type === 'Text' || first?.type === 'ExpressionTag')
};
}
/**
* Infers the namespace for the children of a node that should be used when creating the `$.template(...)`.
* @param {Compiler.Namespace} namespace
* @param {Compiler.SvelteNode} parent
* @param {Compiler.SvelteNode[]} nodes
*/
export function infer_namespace(namespace, parent, nodes) {
if (namespace !== 'foreign') {
if (parent.type === 'RegularElement' && parent.name === 'foreignObject') {
return 'html';
}
if (parent.type === 'RegularElement' || parent.type === 'SvelteElement') {
if (parent.metadata.svg) {
return 'svg';
}
return parent.metadata.mathml ? 'mathml' : 'html';
}
// Re-evaluate the namespace inside slot nodes that reset the namespace
if (
parent.type === 'Fragment' ||
parent.type === 'Root' ||
parent.type === 'Component' ||
parent.type === 'SvelteComponent' ||
parent.type === 'SvelteFragment' ||
parent.type === 'SnippetBlock' ||
parent.type === 'SlotElement'
) {
const new_namespace = check_nodes_for_namespace(nodes, 'keep');
if (new_namespace !== 'keep' && new_namespace !== 'maybe_html') {
return new_namespace;
}
}
}
return namespace;
}
/**
* Heuristic: Keep current namespace, unless we find a regular element,
* in which case we always want html, or we only find svg nodes,
* in which case we assume svg.
* @param {Compiler.SvelteNode[]} nodes
* @param {Compiler.Namespace | 'keep' | 'maybe_html'} namespace
*/
function check_nodes_for_namespace(nodes, namespace) {
/**
* @param {Compiler.SvelteElement | Compiler.RegularElement} node}
* @param {{stop: () => void}} context
*/
const RegularElement = (node, { stop }) => {
if (!node.metadata.svg && !node.metadata.mathml) {
namespace = 'html';
stop();
} else if (namespace === 'keep') {
namespace = node.metadata.svg ? 'svg' : 'mathml';
}
};
for (const node of nodes) {
walk(
node,
{},
{
_(node, { next }) {
if (
node.type === 'EachBlock' ||
node.type === 'IfBlock' ||
node.type === 'AwaitBlock' ||
node.type === 'Fragment' ||
node.type === 'KeyBlock' ||
node.type === 'RegularElement' ||
node.type === 'SvelteElement' ||
node.type === 'Text'
) {
next();
}
},
SvelteElement: RegularElement,
RegularElement,
Text(node) {
if (node.data.trim() !== '') {
namespace = 'maybe_html';
}
}
}
);
if (namespace === 'html') return namespace;
}
return namespace;
}
/**
* Determines the namespace the children of this node are in.
* @param {Compiler.RegularElement | Compiler.SvelteElement} node
* @param {Compiler.Namespace} namespace
* @returns {Compiler.Namespace}
*/
export function determine_namespace_for_children(node, namespace) {
if (namespace === 'foreign') {
return namespace;
}
if (node.name === 'foreignObject') {
return 'html';
}
if (node.metadata.svg) {
return 'svg';
}
return node.metadata.mathml ? 'mathml' : 'html';
}
/**
* @template {TransformState} T
* @param {CallExpression} node
* @param {Context<any, T>} context
*/
export function transform_inspect_rune(node, context) {
const { state, visit } = context;
const as_fn = state.options.generate === 'client';
if (!state.options.dev) return b.unary('void', b.literal(0));
if (node.callee.type === 'MemberExpression') {
const raw_inspect_args = /** @type {CallExpression} */ (node.callee.object).arguments;
const inspect_args =
/** @type {Array<Expression>} */
(raw_inspect_args.map((arg) => visit(arg)));
const with_arg = /** @type {Expression} */ (visit(node.arguments[0]));
return b.call(
'$.inspect',
as_fn ? b.thunk(b.array(inspect_args)) : b.array(inspect_args),
with_arg
);
} else {
const arg = node.arguments.map((arg) => /** @type {Expression} */ (visit(arg)));
return b.call('$.inspect', as_fn ? b.thunk(b.array(arg)) : b.array(arg));
}
}
|