TYPO3 Core

Found by Oliver Bartsch:

Running "exec:ts" (exec) task
    Sources/TypeScript/backend/form-engine.ts:626:14 - error TS1261: Already included file name '/var/www/html/Build/Sources/TypeScript/backend/input/clearable.ts' differs from file name '/var/www/html/Build/Sources/TypeScript/backend/Input/clearable.ts' only in casing.
      The file is in the program because:
        Imported via '@typo3/backend/input/clearable' from file '/var/www/html/Build/Sources/TypeScript/backend/form-engine.ts'
        Imported via '@typo3/backend/input/clearable' from file '/var/www/html/Build/Sources/TypeScript/backend/login.ts'
        Imported via '../input/clearable' from file '/var/www/html/Build/Sources/TypeScript/backend/toolbar/live-search.ts'
        Imported via '@typo3/backend/input/clearable' from file '/var/www/html/Build/Sources/TypeScript/belog/backend-log.ts'
        Imported via '@typo3/backend/input/clearable' from file '/var/www/html/Build/Sources/TypeScript/beuser/backend-user-listing.ts'
        Imported via '@typo3/backend/input/clearable' from file '/var/www/html/Build/Sources/TypeScript/extensionmanager/repository.ts'
        Imported via '@typo3/backend/input/clearable' from file '/var/www/html/Build/Sources/TypeScript/extensionmanager/main.ts'
        Imported via '@typo3/backend/input/clearable' from file '/var/www/html/Build/Sources/TypeScript/lowlevel/query-generator.ts'
        Imported via '@typo3/backend/input/clearable' from file '/var/www/html/Build/Sources/TypeScript/recycler/recycler.ts'
        Imported via '@typo3/backend/input/clearable' from file '/var/www/html/Build/Sources/TypeScript/tstemplate/typo-script-object-browser.ts'
        Imported via '@typo3/backend/input/clearable' from file '/var/www/html/Build/Sources/TypeScript/workspaces/backend.ts'
        Matched by include pattern '**/*' in 'tsconfig.json'

    626       import('@typo3/backend/input/clearable').then(function() {
                     ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

      Sources/TypeScript/backend/login.ts:16:8
        16 import '@typo3/backend/input/clearable';
                  ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
        File is included via import here.
      Sources/TypeScript/backend/toolbar/live-search.ts:18:8
        18 import '../input/clearable';
                  ~~~~~~~~~~~~~~~~~~~~
        File is included via import here.
      Sources/TypeScript/belog/backend-log.ts:16:8
        16 import '@typo3/backend/input/clearable';
                  ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
        File is included via import here.
      Sources/TypeScript/beuser/backend-user-listing.ts:14:8
        14 import '@typo3/backend/input/clearable';
                  ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
        File is included via import here.
      Sources/TypeScript/extensionmanager/repository.ts:20:8
        20 import '@typo3/backend/input/clearable';
                  ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
        File is included via import here.
      Sources/TypeScript/extensionmanager/main.ts:25:8
        25 import '@typo3/backend/input/clearable';
                  ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
        File is included via import here.
      Sources/TypeScript/lowlevel/query-generator.ts:15:8
        15 import '@typo3/backend/input/clearable';
                  ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
        File is included via import here.
      Sources/TypeScript/recycler/recycler.ts:16:8
        16 import '@typo3/backend/input/clearable';
                  ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
        File is included via import here.
      Sources/TypeScript/tstemplate/typo-script-object-browser.ts:14:8
        14 import '@typo3/backend/input/clearable';
                  ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
        File is included via import here.
      Sources/TypeScript/workspaces/backend.ts:18:8
        18 import '@typo3/backend/input/clearable';
                  ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
        File is included via import here.

    Found 1 error.

    >> Exited with code: 2.
    >> Error executing child process: Error: Process exited with code 2.
    Warning: Task "exec:ts" failed. Use --force to continue.

    Aborted due to warnings.