forked from nodejs/node
/
resolve.js
1200 lines (1097 loc) · 38.1 KB
/
resolve.js
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
'use strict';
const {
ArrayIsArray,
ArrayPrototypeConcat,
ArrayPrototypeJoin,
ArrayPrototypeShift,
JSONParse,
JSONStringify,
ObjectFreeze,
ObjectGetOwnPropertyNames,
ObjectPrototypeHasOwnProperty,
RegExp,
RegExpPrototypeExec,
RegExpPrototypeSymbolReplace,
SafeMap,
SafeSet,
String,
StringPrototypeEndsWith,
StringPrototypeIncludes,
StringPrototypeIndexOf,
StringPrototypeLastIndexOf,
StringPrototypeReplace,
StringPrototypeSlice,
StringPrototypeSplit,
StringPrototypeStartsWith,
} = primordials;
const internalFS = require('internal/fs/utils');
const { BuiltinModule } = require('internal/bootstrap/loaders');
const {
realpathSync,
statSync,
Stats,
} = require('fs');
const { getOptionValue } = require('internal/options');
const pendingDeprecation = getOptionValue('--pending-deprecation');
// Do not eagerly grab .manifest, it may be in TDZ
const policy = getOptionValue('--experimental-policy') ?
require('internal/process/policy') :
null;
const { sep, relative, resolve } = require('path');
const preserveSymlinks = getOptionValue('--preserve-symlinks');
const preserveSymlinksMain = getOptionValue('--preserve-symlinks-main');
const experimentalNetworkImports =
getOptionValue('--experimental-network-imports');
const typeFlag = getOptionValue('--input-type');
const { URL, pathToFileURL, fileURLToPath } = require('internal/url');
const {
ERR_INPUT_TYPE_NOT_ALLOWED,
ERR_INVALID_ARG_VALUE,
ERR_INVALID_MODULE_SPECIFIER,
ERR_INVALID_PACKAGE_CONFIG,
ERR_INVALID_PACKAGE_TARGET,
ERR_MANIFEST_DEPENDENCY_MISSING,
ERR_MODULE_NOT_FOUND,
ERR_PACKAGE_IMPORT_NOT_DEFINED,
ERR_PACKAGE_PATH_NOT_EXPORTED,
ERR_UNSUPPORTED_DIR_IMPORT,
ERR_NETWORK_IMPORT_DISALLOWED,
ERR_UNSUPPORTED_ESM_URL_SCHEME,
} = require('internal/errors').codes;
const { Module: CJSModule } = require('internal/modules/cjs/loader');
const packageJsonReader = require('internal/modules/package_json_reader');
const { getPackageConfig, getPackageScopeConfig } = require('internal/modules/esm/package_config');
/**
* @typedef {import('internal/modules/esm/package_config.js').PackageConfig} PackageConfig
*/
const userConditions = getOptionValue('--conditions');
const noAddons = getOptionValue('--no-addons');
const addonConditions = noAddons ? [] : ['node-addons'];
const DEFAULT_CONDITIONS = ObjectFreeze([
'node',
'import',
...addonConditions,
...userConditions,
]);
const DEFAULT_CONDITIONS_SET = new SafeSet(DEFAULT_CONDITIONS);
const emittedPackageWarnings = new SafeSet();
function emitTrailingSlashPatternDeprecation(match, pjsonUrl, base) {
const pjsonPath = fileURLToPath(pjsonUrl);
if (emittedPackageWarnings.has(pjsonPath + '|' + match))
return;
emittedPackageWarnings.add(pjsonPath + '|' + match);
process.emitWarning(
`Use of deprecated trailing slash pattern mapping "${match}" in the ` +
`"exports" field module resolution of the package at ${pjsonPath}${
base ? ` imported from ${fileURLToPath(base)}` :
''}. Mapping specifiers ending in "/" is no longer supported.`,
'DeprecationWarning',
'DEP0155'
);
}
const doubleSlashRegEx = /[/\\][/\\]/;
function emitInvalidSegmentDeprecation(target, request, match, pjsonUrl, base) {
if (!pendingDeprecation) { return; }
const pjsonPath = fileURLToPath(pjsonUrl);
const double = RegExpPrototypeExec(doubleSlashRegEx, target) !== null;
process.emitWarning(
`Use of deprecated ${double ? 'double slash' :
'leading or trailing slash matching'} resolving "${target}" for module ` +
`request "${request}" ${request !== match ? `matched to "${match}" ` : ''
}in the "exports" field module resolution of the package at ${pjsonPath}${
base ? ` imported from ${fileURLToPath(base)}` : ''}.`,
'DeprecationWarning',
'DEP0166'
);
}
/**
* @param {URL} url
* @param {URL} packageJSONUrl
* @param {string | URL | undefined} base
* @param {string} main
* @returns {void}
*/
function emitLegacyIndexDeprecation(url, packageJSONUrl, base, main) {
const format = defaultGetFormatWithoutErrors(url);
if (format !== 'module')
return;
const path = fileURLToPath(url);
const pkgPath = fileURLToPath(new URL('.', packageJSONUrl));
const basePath = fileURLToPath(base);
if (main)
process.emitWarning(
`Package ${pkgPath} has a "main" field set to ${JSONStringify(main)}, ` +
`excluding the full filename and extension to the resolved file at "${
StringPrototypeSlice(path, pkgPath.length)}", imported from ${
basePath}.\n Automatic extension resolution of the "main" field is ` +
'deprecated for ES modules.',
'DeprecationWarning',
'DEP0151'
);
else
process.emitWarning(
`No "main" or "exports" field defined in the package.json for ${pkgPath
} resolving the main entry point "${
StringPrototypeSlice(path, pkgPath.length)}", imported from ${basePath
}.\nDefault "index" lookups for the main are deprecated for ES modules.`,
'DeprecationWarning',
'DEP0151'
);
}
/**
* @param {string[]} [conditions]
* @returns {Set<string>}
*/
function getConditionsSet(conditions) {
if (conditions !== undefined && conditions !== DEFAULT_CONDITIONS) {
if (!ArrayIsArray(conditions)) {
throw new ERR_INVALID_ARG_VALUE('conditions', conditions,
'expected an array');
}
return new SafeSet(conditions);
}
return DEFAULT_CONDITIONS_SET;
}
const realpathCache = new SafeMap();
/**
* @param {string | URL} path
* @returns {import('fs').Stats}
*/
const tryStatSync =
(path) => statSync(path, { throwIfNoEntry: false }) ?? new Stats();
/**
* @param {string | URL} url
* @returns {boolean}
*/
function fileExists(url) {
return statSync(url, { throwIfNoEntry: false })?.isFile() ?? false;
}
/**
* Legacy CommonJS main resolution:
* 1. let M = pkg_url + (json main field)
* 2. TRY(M, M.js, M.json, M.node)
* 3. TRY(M/index.js, M/index.json, M/index.node)
* 4. TRY(pkg_url/index.js, pkg_url/index.json, pkg_url/index.node)
* 5. NOT_FOUND
* @param {URL} packageJSONUrl
* @param {PackageConfig} packageConfig
* @param {string | URL | undefined} base
* @returns {URL}
*/
function legacyMainResolve(packageJSONUrl, packageConfig, base) {
let guess;
if (packageConfig.main !== undefined) {
// Note: fs check redundances will be handled by Descriptor cache here.
if (fileExists(guess = new URL(`./${packageConfig.main}`,
packageJSONUrl))) {
return guess;
} else if (fileExists(guess = new URL(`./${packageConfig.main}.js`,
packageJSONUrl)));
else if (fileExists(guess = new URL(`./${packageConfig.main}.json`,
packageJSONUrl)));
else if (fileExists(guess = new URL(`./${packageConfig.main}.node`,
packageJSONUrl)));
else if (fileExists(guess = new URL(`./${packageConfig.main}/index.js`,
packageJSONUrl)));
else if (fileExists(guess = new URL(`./${packageConfig.main}/index.json`,
packageJSONUrl)));
else if (fileExists(guess = new URL(`./${packageConfig.main}/index.node`,
packageJSONUrl)));
else guess = undefined;
if (guess) {
emitLegacyIndexDeprecation(guess, packageJSONUrl, base,
packageConfig.main);
return guess;
}
// Fallthrough.
}
if (fileExists(guess = new URL('./index.js', packageJSONUrl)));
// So fs.
else if (fileExists(guess = new URL('./index.json', packageJSONUrl)));
else if (fileExists(guess = new URL('./index.node', packageJSONUrl)));
else guess = undefined;
if (guess) {
emitLegacyIndexDeprecation(guess, packageJSONUrl, base, packageConfig.main);
return guess;
}
// Not found.
throw new ERR_MODULE_NOT_FOUND(
fileURLToPath(new URL('.', packageJSONUrl)), fileURLToPath(base));
}
/**
* @param {URL} search
* @returns {URL | undefined}
*/
function resolveExtensionsWithTryExactName(search) {
if (fileExists(search)) return search;
return resolveExtensions(search);
}
const extensions = ['.js', '.json', '.node', '.mjs'];
/**
* @param {URL} search
* @returns {URL | undefined}
*/
function resolveExtensions(search) {
for (let i = 0; i < extensions.length; i++) {
const extension = extensions[i];
const guess = new URL(`${search.pathname}${extension}`, search);
if (fileExists(guess)) return guess;
}
return undefined;
}
/**
* @param {URL} search
* @returns {URL | undefined}
*/
function resolveDirectoryEntry(search) {
const dirPath = fileURLToPath(search);
const pkgJsonPath = resolve(dirPath, 'package.json');
if (fileExists(pkgJsonPath)) {
const pkgJson = packageJsonReader.read(pkgJsonPath);
if (pkgJson.containsKeys) {
const { main } = JSONParse(pkgJson.string);
if (main != null) {
const mainUrl = pathToFileURL(resolve(dirPath, main));
return resolveExtensionsWithTryExactName(mainUrl);
}
}
}
return resolveExtensions(new URL('index', search));
}
const encodedSepRegEx = /%2F|%5C/i;
/**
* @param {URL} resolved
* @param {string | URL | undefined} base
* @param {boolean} preserveSymlinks
* @returns {URL | undefined}
*/
function finalizeResolution(resolved, base, preserveSymlinks) {
if (RegExpPrototypeExec(encodedSepRegEx, resolved.pathname) !== null)
throw new ERR_INVALID_MODULE_SPECIFIER(
resolved.pathname, 'must not include encoded "/" or "\\" characters',
fileURLToPath(base));
let path = fileURLToPath(resolved);
if (getOptionValue('--experimental-specifier-resolution') === 'node') {
let file = resolveExtensionsWithTryExactName(resolved);
// Directory
if (file === undefined) {
file = StringPrototypeEndsWith(path, '/') ?
(resolveDirectoryEntry(resolved) || resolved) : resolveDirectoryEntry(new URL(`${resolved}/`));
if (file === resolved) return file;
if (file === undefined) {
throw new ERR_MODULE_NOT_FOUND(
resolved.pathname, fileURLToPath(base), 'module');
}
}
path = file;
}
const stats = tryStatSync(StringPrototypeEndsWith(path, '/') ?
StringPrototypeSlice(path, -1) : path);
if (stats.isDirectory()) {
const err = new ERR_UNSUPPORTED_DIR_IMPORT(path, fileURLToPath(base));
err.url = String(resolved);
throw err;
} else if (!stats.isFile()) {
throw new ERR_MODULE_NOT_FOUND(
path || resolved.pathname, base && fileURLToPath(base), 'module');
}
if (!preserveSymlinks) {
const real = realpathSync(path, {
[internalFS.realpathCacheKey]: realpathCache
});
const { search, hash } = resolved;
resolved =
pathToFileURL(real + (StringPrototypeEndsWith(path, sep) ? '/' : ''));
resolved.search = search;
resolved.hash = hash;
}
return resolved;
}
/**
* @param {string} specifier
* @param {URL} packageJSONUrl
* @param {string | URL | undefined} base
*/
function throwImportNotDefined(specifier, packageJSONUrl, base) {
throw new ERR_PACKAGE_IMPORT_NOT_DEFINED(
specifier, packageJSONUrl && fileURLToPath(new URL('.', packageJSONUrl)),
fileURLToPath(base));
}
/**
* @param {string} subpath
* @param {URL} packageJSONUrl
* @param {string | URL | undefined} base
*/
function throwExportsNotFound(subpath, packageJSONUrl, base) {
throw new ERR_PACKAGE_PATH_NOT_EXPORTED(
fileURLToPath(new URL('.', packageJSONUrl)), subpath,
base && fileURLToPath(base));
}
/**
*
* @param {string} request
* @param {string} match
* @param {URL} packageJSONUrl
* @param {boolean} internal
* @param {string | URL | undefined} base
*/
function throwInvalidSubpath(request, match, packageJSONUrl, internal, base) {
const reason = `request is not a valid match in pattern "${match}" for the "${
internal ? 'imports' : 'exports'}" resolution of ${
fileURLToPath(packageJSONUrl)}`;
throw new ERR_INVALID_MODULE_SPECIFIER(request, reason,
base && fileURLToPath(base));
}
function throwInvalidPackageTarget(
subpath, target, packageJSONUrl, internal, base) {
if (typeof target === 'object' && target !== null) {
target = JSONStringify(target, null, '');
} else {
target = `${target}`;
}
throw new ERR_INVALID_PACKAGE_TARGET(
fileURLToPath(new URL('.', packageJSONUrl)), subpath, target,
internal, base && fileURLToPath(base));
}
const invalidSegmentRegEx = /(^|\\|\/)((\.|%2e)(\.|%2e)?|(n|%6e|%4e)(o|%6f|%4f)(d|%64|%44)(e|%65|%45)(_|%5f)(m|%6d|%4d)(o|%6f|%4f)(d|%64|%44)(u|%75|%55)(l|%6c|%4c)(e|%65|%45)(s|%73|%53))?(\\|\/|$)/i;
const deprecatedInvalidSegmentRegEx = /(^|\\|\/)((\.|%2e)(\.|%2e)?|(n|%6e|%4e)(o|%6f|%4f)(d|%64|%44)(e|%65|%45)(_|%5f)(m|%6d|%4d)(o|%6f|%4f)(d|%64|%44)(u|%75|%55)(l|%6c|%4c)(e|%65|%45)(s|%73|%53))(\\|\/|$)/i;
const invalidPackageNameRegEx = /^\.|%|\\/;
const patternRegEx = /\*/g;
function resolvePackageTargetString(
target,
subpath,
match,
packageJSONUrl,
base,
pattern,
internal,
isPathMap,
conditions
) {
if (subpath !== '' && !pattern && target[target.length - 1] !== '/')
throwInvalidPackageTarget(match, target, packageJSONUrl, internal, base);
if (!StringPrototypeStartsWith(target, './')) {
if (internal && !StringPrototypeStartsWith(target, '../') &&
!StringPrototypeStartsWith(target, '/')) {
let isURL = false;
try {
new URL(target);
isURL = true;
} catch {
// Continue regardless of error.
}
if (!isURL) {
const exportTarget = pattern ?
RegExpPrototypeSymbolReplace(patternRegEx, target, () => subpath) :
target + subpath;
return packageResolve(
exportTarget, packageJSONUrl, conditions);
}
}
throwInvalidPackageTarget(match, target, packageJSONUrl, internal, base);
}
if (RegExpPrototypeExec(invalidSegmentRegEx,
StringPrototypeSlice(target, 2)) !== null) {
if (RegExpPrototypeExec(deprecatedInvalidSegmentRegEx,
StringPrototypeSlice(target, 2)) === null) {
if (!isPathMap) {
const request = pattern ?
StringPrototypeReplace(match, '*', () => subpath) :
match + subpath;
const resolvedTarget = pattern ?
RegExpPrototypeSymbolReplace(patternRegEx, target, () => subpath) :
target;
emitInvalidSegmentDeprecation(resolvedTarget, request, match,
packageJSONUrl, base);
}
} else {
throwInvalidPackageTarget(match, target, packageJSONUrl, internal, base);
}
}
const resolved = new URL(target, packageJSONUrl);
const resolvedPath = resolved.pathname;
const packagePath = new URL('.', packageJSONUrl).pathname;
if (!StringPrototypeStartsWith(resolvedPath, packagePath))
throwInvalidPackageTarget(match, target, packageJSONUrl, internal, base);
if (subpath === '') return resolved;
if (RegExpPrototypeExec(invalidSegmentRegEx, subpath) !== null) {
const request = pattern ?
StringPrototypeReplace(match, '*', () => subpath) : match + subpath;
if (RegExpPrototypeExec(deprecatedInvalidSegmentRegEx, subpath) === null) {
if (!isPathMap) {
const resolvedTarget = pattern ?
RegExpPrototypeSymbolReplace(patternRegEx, target, () => subpath) :
target;
emitInvalidSegmentDeprecation(resolvedTarget, request, match,
packageJSONUrl, base);
}
} else {
throwInvalidSubpath(request, match, packageJSONUrl, internal, base);
}
}
if (pattern) {
return new URL(
RegExpPrototypeSymbolReplace(patternRegEx, resolved.href, () => subpath)
);
}
return new URL(subpath, resolved);
}
/**
* @param {string} key
* @returns {boolean}
*/
function isArrayIndex(key) {
const keyNum = +key;
if (`${keyNum}` !== key) return false;
return keyNum >= 0 && keyNum < 0xFFFF_FFFF;
}
function resolvePackageTarget(packageJSONUrl, target, subpath, packageSubpath,
base, pattern, internal, isPathMap, conditions) {
if (typeof target === 'string') {
return resolvePackageTargetString(
target, subpath, packageSubpath, packageJSONUrl, base, pattern, internal,
isPathMap, conditions);
} else if (ArrayIsArray(target)) {
if (target.length === 0) {
return null;
}
let lastException;
for (let i = 0; i < target.length; i++) {
const targetItem = target[i];
let resolveResult;
try {
resolveResult = resolvePackageTarget(
packageJSONUrl, targetItem, subpath, packageSubpath, base, pattern,
internal, isPathMap, conditions);
} catch (e) {
lastException = e;
if (e.code === 'ERR_INVALID_PACKAGE_TARGET') {
continue;
}
throw e;
}
if (resolveResult === undefined) {
continue;
}
if (resolveResult === null) {
lastException = null;
continue;
}
return resolveResult;
}
if (lastException === undefined || lastException === null)
return lastException;
throw lastException;
} else if (typeof target === 'object' && target !== null) {
const keys = ObjectGetOwnPropertyNames(target);
for (let i = 0; i < keys.length; i++) {
const key = keys[i];
if (isArrayIndex(key)) {
throw new ERR_INVALID_PACKAGE_CONFIG(
fileURLToPath(packageJSONUrl), base,
'"exports" cannot contain numeric property keys.');
}
}
for (let i = 0; i < keys.length; i++) {
const key = keys[i];
if (key === 'default' || conditions.has(key)) {
const conditionalTarget = target[key];
const resolveResult = resolvePackageTarget(
packageJSONUrl, conditionalTarget, subpath, packageSubpath, base,
pattern, internal, isPathMap, conditions);
if (resolveResult === undefined)
continue;
return resolveResult;
}
}
return undefined;
} else if (target === null) {
return null;
}
throwInvalidPackageTarget(packageSubpath, target, packageJSONUrl, internal,
base);
}
/**
*
* @param {import('internal/modules/esm/package_config.js').Exports} exports
* @param {URL} packageJSONUrl
* @param {string | URL | undefined} base
* @returns {boolean}
*/
function isConditionalExportsMainSugar(exports, packageJSONUrl, base) {
if (typeof exports === 'string' || ArrayIsArray(exports)) return true;
if (typeof exports !== 'object' || exports === null) return false;
const keys = ObjectGetOwnPropertyNames(exports);
let isConditionalSugar = false;
let i = 0;
for (let j = 0; j < keys.length; j++) {
const key = keys[j];
const curIsConditionalSugar = key === '' || key[0] !== '.';
if (i++ === 0) {
isConditionalSugar = curIsConditionalSugar;
} else if (isConditionalSugar !== curIsConditionalSugar) {
throw new ERR_INVALID_PACKAGE_CONFIG(
fileURLToPath(packageJSONUrl), base,
'"exports" cannot contain some keys starting with \'.\' and some not.' +
' The exports object must either be an object of package subpath keys' +
' or an object of main entry condition name keys only.');
}
}
return isConditionalSugar;
}
/**
* @param {URL} packageJSONUrl
* @param {string} packageSubpath
* @param {PackageConfig} packageConfig
* @param {string | URL | undefined} base
* @param {Set<string>} conditions
* @returns {URL}
*/
function packageExportsResolve(
packageJSONUrl, packageSubpath, packageConfig, base, conditions) {
let exports = packageConfig.exports;
if (isConditionalExportsMainSugar(exports, packageJSONUrl, base))
exports = { '.': exports };
if (ObjectPrototypeHasOwnProperty(exports, packageSubpath) &&
!StringPrototypeIncludes(packageSubpath, '*') &&
!StringPrototypeEndsWith(packageSubpath, '/')) {
const target = exports[packageSubpath];
const resolveResult = resolvePackageTarget(
packageJSONUrl, target, '', packageSubpath, base, false, false, false,
conditions
);
if (resolveResult == null) {
throwExportsNotFound(packageSubpath, packageJSONUrl, base);
}
return resolveResult;
}
let bestMatch = '';
let bestMatchSubpath;
const keys = ObjectGetOwnPropertyNames(exports);
for (let i = 0; i < keys.length; i++) {
const key = keys[i];
const patternIndex = StringPrototypeIndexOf(key, '*');
if (patternIndex !== -1 &&
StringPrototypeStartsWith(packageSubpath,
StringPrototypeSlice(key, 0, patternIndex))) {
// When this reaches EOL, this can throw at the top of the whole function:
//
// if (StringPrototypeEndsWith(packageSubpath, '/'))
// throwInvalidSubpath(packageSubpath)
//
// To match "imports" and the spec.
if (StringPrototypeEndsWith(packageSubpath, '/'))
emitTrailingSlashPatternDeprecation(packageSubpath, packageJSONUrl,
base);
const patternTrailer = StringPrototypeSlice(key, patternIndex + 1);
if (packageSubpath.length >= key.length &&
StringPrototypeEndsWith(packageSubpath, patternTrailer) &&
patternKeyCompare(bestMatch, key) === 1 &&
StringPrototypeLastIndexOf(key, '*') === patternIndex) {
bestMatch = key;
bestMatchSubpath = StringPrototypeSlice(
packageSubpath, patternIndex,
packageSubpath.length - patternTrailer.length);
}
}
}
if (bestMatch) {
const target = exports[bestMatch];
const resolveResult = resolvePackageTarget(
packageJSONUrl,
target,
bestMatchSubpath,
bestMatch,
base,
true,
false,
StringPrototypeEndsWith(packageSubpath, '/'),
conditions);
if (resolveResult == null) {
throwExportsNotFound(packageSubpath, packageJSONUrl, base);
}
return resolveResult;
}
throwExportsNotFound(packageSubpath, packageJSONUrl, base);
}
function patternKeyCompare(a, b) {
const aPatternIndex = StringPrototypeIndexOf(a, '*');
const bPatternIndex = StringPrototypeIndexOf(b, '*');
const baseLenA = aPatternIndex === -1 ? a.length : aPatternIndex + 1;
const baseLenB = bPatternIndex === -1 ? b.length : bPatternIndex + 1;
if (baseLenA > baseLenB) return -1;
if (baseLenB > baseLenA) return 1;
if (aPatternIndex === -1) return 1;
if (bPatternIndex === -1) return -1;
if (a.length > b.length) return -1;
if (b.length > a.length) return 1;
return 0;
}
/**
* @param {string} name
* @param {string | URL | undefined} base
* @param {Set<string>} conditions
* @returns {URL}
*/
function packageImportsResolve(name, base, conditions) {
if (name === '#' || StringPrototypeStartsWith(name, '#/') ||
StringPrototypeEndsWith(name, '/')) {
const reason = 'is not a valid internal imports specifier name';
throw new ERR_INVALID_MODULE_SPECIFIER(name, reason, fileURLToPath(base));
}
let packageJSONUrl;
const packageConfig = getPackageScopeConfig(base);
if (packageConfig.exists) {
packageJSONUrl = pathToFileURL(packageConfig.pjsonPath);
const imports = packageConfig.imports;
if (imports) {
if (ObjectPrototypeHasOwnProperty(imports, name) &&
!StringPrototypeIncludes(name, '*')) {
const resolveResult = resolvePackageTarget(
packageJSONUrl, imports[name], '', name, base, false, true, false,
conditions
);
if (resolveResult != null) {
return resolveResult;
}
} else {
let bestMatch = '';
let bestMatchSubpath;
const keys = ObjectGetOwnPropertyNames(imports);
for (let i = 0; i < keys.length; i++) {
const key = keys[i];
const patternIndex = StringPrototypeIndexOf(key, '*');
if (patternIndex !== -1 &&
StringPrototypeStartsWith(name,
StringPrototypeSlice(key, 0,
patternIndex))) {
const patternTrailer = StringPrototypeSlice(key, patternIndex + 1);
if (name.length >= key.length &&
StringPrototypeEndsWith(name, patternTrailer) &&
patternKeyCompare(bestMatch, key) === 1 &&
StringPrototypeLastIndexOf(key, '*') === patternIndex) {
bestMatch = key;
bestMatchSubpath = StringPrototypeSlice(
name, patternIndex, name.length - patternTrailer.length);
}
}
}
if (bestMatch) {
const target = imports[bestMatch];
const resolveResult = resolvePackageTarget(packageJSONUrl, target,
bestMatchSubpath,
bestMatch, base, true,
true, false, conditions);
if (resolveResult != null) {
return resolveResult;
}
}
}
}
}
throwImportNotDefined(name, packageJSONUrl, base);
}
/**
* @param {URL} url
* @returns {import('internal/modules/esm/package_config.js').PackageType}
*/
function getPackageType(url) {
const packageConfig = getPackageScopeConfig(url);
return packageConfig.type;
}
/**
* @param {string} specifier
* @param {string | URL | undefined} base
* @returns {{ packageName: string, packageSubpath: string, isScoped: boolean }}
*/
function parsePackageName(specifier, base) {
let separatorIndex = StringPrototypeIndexOf(specifier, '/');
let validPackageName = true;
let isScoped = false;
if (specifier[0] === '@') {
isScoped = true;
if (separatorIndex === -1 || specifier.length === 0) {
validPackageName = false;
} else {
separatorIndex = StringPrototypeIndexOf(
specifier, '/', separatorIndex + 1);
}
}
const packageName = separatorIndex === -1 ?
specifier : StringPrototypeSlice(specifier, 0, separatorIndex);
// Package name cannot have leading . and cannot have percent-encoding or
// \\ separators.
if (RegExpPrototypeExec(invalidPackageNameRegEx, packageName) !== null)
validPackageName = false;
if (!validPackageName) {
throw new ERR_INVALID_MODULE_SPECIFIER(
specifier, 'is not a valid package name', fileURLToPath(base));
}
const packageSubpath = '.' + (separatorIndex === -1 ? '' :
StringPrototypeSlice(specifier, separatorIndex));
return { packageName, packageSubpath, isScoped };
}
/**
* @param {string} specifier
* @param {string | URL | undefined} base
* @param {Set<string>} conditions
* @returns {resolved: URL, format? : string}
*/
function packageResolve(specifier, base, conditions) {
if (BuiltinModule.canBeRequiredByUsers(specifier) &&
BuiltinModule.canBeRequiredWithoutScheme(specifier)) {
return new URL('node:' + specifier);
}
const { packageName, packageSubpath, isScoped } =
parsePackageName(specifier, base);
// ResolveSelf
const packageConfig = getPackageScopeConfig(base);
if (packageConfig.exists) {
const packageJSONUrl = pathToFileURL(packageConfig.pjsonPath);
if (packageConfig.name === packageName &&
packageConfig.exports !== undefined && packageConfig.exports !== null) {
return packageExportsResolve(
packageJSONUrl, packageSubpath, packageConfig, base, conditions);
}
}
let packageJSONUrl =
new URL('./node_modules/' + packageName + '/package.json', base);
let packageJSONPath = fileURLToPath(packageJSONUrl);
let lastPath;
do {
const stat = tryStatSync(StringPrototypeSlice(packageJSONPath, 0,
packageJSONPath.length - 13));
if (!stat.isDirectory()) {
lastPath = packageJSONPath;
packageJSONUrl = new URL((isScoped ?
'../../../../node_modules/' : '../../../node_modules/') +
packageName + '/package.json', packageJSONUrl);
packageJSONPath = fileURLToPath(packageJSONUrl);
continue;
}
// Package match.
const packageConfig = getPackageConfig(packageJSONPath, specifier, base);
if (packageConfig.exports !== undefined && packageConfig.exports !== null) {
return packageExportsResolve(
packageJSONUrl, packageSubpath, packageConfig, base, conditions);
}
if (packageSubpath === '.') {
return legacyMainResolve(
packageJSONUrl,
packageConfig,
base
);
}
return new URL(packageSubpath, packageJSONUrl);
// Cross-platform root check.
} while (packageJSONPath.length !== lastPath.length);
// eslint can't handle the above code.
// eslint-disable-next-line no-unreachable
throw new ERR_MODULE_NOT_FOUND(packageName, fileURLToPath(base));
}
/**
* @param {string} specifier
* @returns {boolean}
*/
function isBareSpecifier(specifier) {
return specifier[0] && specifier[0] !== '/' && specifier[0] !== '.';
}
function isRelativeSpecifier(specifier) {
if (specifier[0] === '.') {
if (specifier.length === 1 || specifier[1] === '/') return true;
if (specifier[1] === '.') {
if (specifier.length === 2 || specifier[2] === '/') return true;
}
}
return false;
}
function shouldBeTreatedAsRelativeOrAbsolutePath(specifier) {
if (specifier === '') return false;
if (specifier[0] === '/') return true;
return isRelativeSpecifier(specifier);
}
/**
* @param {string} specifier
* @param {string | URL | undefined} base
* @param {Set<string>} conditions
* @param {boolean} preserveSymlinks
* @returns {url: URL, format?: string}
*/
function moduleResolve(specifier, base, conditions, preserveSymlinks) {
const isRemote = base.protocol === 'http:' ||
base.protocol === 'https:';
// Order swapped from spec for minor perf gain.
// Ok since relative URLs cannot parse as URLs.
let resolved;
if (shouldBeTreatedAsRelativeOrAbsolutePath(specifier)) {
resolved = new URL(specifier, base);
} else if (!isRemote && specifier[0] === '#') {
resolved = packageImportsResolve(specifier, base, conditions);
} else {
try {
resolved = new URL(specifier);
} catch {
if (!isRemote) {
resolved = packageResolve(specifier, base, conditions);
}
}
}
if (resolved.protocol !== 'file:') {
return resolved;
}
return finalizeResolution(resolved, base, preserveSymlinks);
}
/**
* Try to resolve an import as a CommonJS module
* @param {string} specifier
* @param {string} parentURL
* @returns {boolean|string}
*/
function resolveAsCommonJS(specifier, parentURL) {
try {
const parent = fileURLToPath(parentURL);
const tmpModule = new CJSModule(parent, null);
tmpModule.paths = CJSModule._nodeModulePaths(parent);
let found = CJSModule._resolveFilename(specifier, tmpModule, false);
// If it is a relative specifier return the relative path
// to the parent
if (isRelativeSpecifier(specifier)) {
found = relative(parent, found);
// Add '.separator if the path does not start with '..separator'
// This should be a safe assumption because when loading
// esm modules there should be always a file specified so
// there should not be a specifier like '..' or '.'
if (!StringPrototypeStartsWith(found, `..${sep}`)) {
found = `.${sep}${found}`;
}
} else if (isBareSpecifier(specifier)) {
// If it is a bare specifier return the relative path within the
// module
const pkg = StringPrototypeSplit(specifier, '/')[0];
const index = StringPrototypeIndexOf(found, pkg);
if (index !== -1) {
found = StringPrototypeSlice(found, index);
}
}
// Normalize the path separator to give a valid suggestion
// on Windows
if (process.platform === 'win32') {
found = RegExpPrototypeSymbolReplace(new RegExp(`\\${sep}`, 'g'),
found, '/');
}
return found;
} catch {
return false;
}
}
// TODO(@JakobJingleheimer): de-dupe `specifier` & `parsed`
function checkIfDisallowedImport(specifier, parsed, parsedParentURL) {
if (parsedParentURL) {
if (
parsedParentURL.protocol === 'http:' ||
parsedParentURL.protocol === 'https:'
) {
if (shouldBeTreatedAsRelativeOrAbsolutePath(specifier)) {
// data: and blob: disallowed due to allowing file: access via
// indirection
if (parsed &&
parsed.protocol !== 'https:' &&
parsed.protocol !== 'http:'
) {
throw new ERR_NETWORK_IMPORT_DISALLOWED(
specifier,
parsedParentURL,
'remote imports cannot import from a local location.'
);
}
return { url: parsed.href };
}
if (BuiltinModule.canBeRequiredByUsers(specifier) &&
BuiltinModule.canBeRequiredWithoutScheme(specifier)) {
throw new ERR_NETWORK_IMPORT_DISALLOWED(
specifier,
parsedParentURL,
'remote imports cannot import from a local location.'
);
}