"File name X differs from Y only in casing." problem when using webpack style path alias

Type: Bug

I am using webpack-style path aliases for Javascript imports. For example:

import { Pricing } from 'SRC/pricing.mjs';

with a jsconfig.json that looks like this:

{
    "compilerOptions": {
      "module": "es6",
      "target": "es6",
    },
    "baseUrl": ".",
    "paths": {
      "SRC/*": ["./src/*"]
    }
}

With the result that SRC/pricing.mjs is replaced with {baseurl}/src/pricing.mjs no matter what directory the importing code lives in.

This works fine, however I get warnings like the following in the 'Problems' view:

File name '<path to project>/SRC/pricing.mjs' differs from already included file name '<path to project>/src/pricing.mjs' only in casing.
  The file is in the program because:
    Matched by default include pattern '**/*'
    Imported via 'SRC/pricing.mjs' from file '<path to project>/src/page/index-client.js'
    Imported via 'SRC/pricing.mjs' from file '<path to project>/src/page/index-html.js'
    Imported via 'SRC/pricing.mjs' from file '<path to project>/src/page/pricing-calculator-client.js'
    Imported via 'SRC/pricing.mjs' from file '<path to project>/src/page/pricing-calculator-html.js'

I think the code that checks for case insensitivity issues might not be fully / correctly aware of how jsconfig.son path aliases work.

I can workaround the issue by adding "forceConsistentCasingInFileNames": false to compilerOptions however then I don't get the general benefit of this problem detection.

If I use SRC2 or $SRC instead of SRC everything is fine.

VS Code version: Code 1.77.3 (Universal) (704ed70d4fd1c6bd6342c436f1ede30d1cff4710, 2023-04-12T09:19:37.325Z)
OS version: Darwin arm64 22.4.0
Modes:
Sandboxed: Yes

vsliv368cf:30146710
vsreu685:30147344
python383:30185418
vspor879:30202332
vspor708:30202333
vspor363:30204092
vslsvsres303:30308271
vserr242cf:30382550
pythontb:30283811
vsjup518:30340749
pythonptprofiler:30281270
vshan820:30294714
vstes263cf:30335440
vscorecescf:30445987
pythondataviewer:30285071
vscod805cf:30301675
binariesv615:30325510
bridge0708:30335490
bridge0723:30353136
cmake_vspar411:30581797
vsaa593cf:30376535
pythonvs932:30410667
cppdebug:30492333
vscaac:30438847
vsclangdc:30486549
c4g48928:30535728
dsvsc012:30540252
pynewext54:30695312
azure-dev_surveyonecf:30548226
nodejswelcome1cf:30587006
2e4cg342:30602488
pyind779:30671433
89544117:30613380
vscrp:30673768
pythonsymbol12:30671437
2i9eh265:30646982
vsctsb:30705553
pythonb192:30669360
defaultazurewalk:30687958
pythonms35:30701012
pythonclientmv:30708685

Beginne damit, die Diagnose mit der gezeigten jsconfig.json und den Importen aus SRC/pricing.mjs zu reproduzieren. Vergleiche, wie der aliasierte Pfad und der tatsächliche Pfad src/pricing.mjs gemeldet werden, während forceConsistentCasingInFileNames aktiviert bleibt. Als erledigt gilt die Aufgabe, wenn gültige webpack-artige Aliase keine Warnung zur Groß-/Kleinschreibung mehr erzeugen, ohne die allgemeinen Prüfungen der Groß-/Kleinschreibung zu deaktivieren.