When importing a non-existent index.module.less file, ts will crash.

[eightHundreds]

Describe the bug

When importing a non-existent index.module.less file, ts will crash.

The problematic import is in a third-party package (node_module).

To Reproduce
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1. Go to '...'
2. Click on '....'
3. Scroll down to '....'
4. See error

Expected behavior
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Desktop (please complete the following information):

• OS: [e.g. iOS]
• Browser [e.g. chrome, safari]
• Version [e.g. 22]

Smartphone (please complete the following information):

• Device: [e.g. iPhone6]
• OS: [e.g. iOS8.1]
• Browser [e.g. stock browser, safari]
• Version [e.g. 22]

Additional context
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[OrangeTimes]

same issues with sass

[mrmckeb]

The fix for this has been released as 5.0.1.