TypeScript error in undefined(undefined,undefined)

Question

I am stuck with TypeScript error:

Failed to compile.

undefined
TypeScript error in undefined(undefined,undefined):
File name '/path/to/file/MyFileName.types.tsx' differs from already included file name '/path/to/file/myFileName.types.tsx' only in casing.  TS1149

Spot the difference in first letter between myFileName and MyFileName. I have not idea how this happened and I don't know how to fix it. I have never seen this error before. I am using TypeScript Version 3.5.3. If someone can at least point me into direction what to do, it would be super helpful.

For a similar issue I had to rm -rf node_modules and then yarn install again. Not quite sure what the issue was — Elie Steinbock
– Elie Steinbock, Commented Feb 11, 2021 at 16:45

kodek-sleuth · Accepted Answer · 2019-11-11 09:00:46Z

5

For my case, I just installed packages with this command

npm i

answered Nov 11, 2019 at 9:00

kodek-sleuth

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Comments

Marek · Accepted Answer · 2019-09-28 14:55:05Z

3

Oh crap. There was a lowercased import somewhere in my code:

import { TSomething } from './myFileName.types'

while real file name was uppercased:

MyFileName.types.tsx

I still don't know why TypeScript compiler didn't tell me where was that.

answered Sep 28, 2019 at 14:55

Marek

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Comments

Thiago Leite · Accepted Answer · 2020-05-14 17:42:06Z

2

Just run:
"yarn tsc" or npm. Works!

answered May 14, 2020 at 17:42

Thiago Leite

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JuroOravec · Accepted Answer · 2021-10-29 11:17:01Z

Ok, this is probably the craziest error I've ever seen.

Context

vue 2.6.10
typescript 4.4.3
Built using webpack via vue-cli-service build.

I was getting following error on build:

⠼  Building for production...

 ERROR  Failed to compile with 1 errors                                                                                                   10:49:11

 error  in [internal]

INTERNAL ERROR(undefined,undefined) Debug Failure.
stack trace:
Error: Debug Failure.
    at /Users/user/path/to/repo/node_modules/typescript/lib/typescript.js:19487:89
    at String.replace (<anonymous>)
    at formatStringFromArgs (/Users/user/path/to/repo/node_modules/typescript/lib/typescript.js:19487:21)
    at Object.createDetachedDiagnostic (/Users/user/path/to/repo/node_modules/typescript/lib/typescript.js:19503:20)
    at parseErrorAtPosition (/Users/user/path/to/repo/node_modules/typescript/lib/typescript.js:30898:42)
    at parseErrorAt (/Users/user/path/to/repo/node_modules/typescript/lib/typescript.js:30905:13)
    at parseErrorAtCurrentToken (/Users/user/path/to/repo/node_modules/typescript/lib/typescript.js:30892:13)
    at parseErrorForInvalidName (/Users/user/path/to/repo/node_modules/typescript/lib/typescript.js:31130:17)
    at parseErrorForMissingSemicolonAfter (/Users/user/path/to/repo/node_modules/typescript/lib/typescript.js:31102:21)
    at parseExpressionOrLabeledStatement (/Users/user/path/to/repo/node_modules/typescript/lib/typescript.js:34993:21)

 ERROR  Build failed with errors.

Solution

The error was an HTML text in Vue template.

<template>
  ...
  Please type "{{ listName }}" to confirm.
  ...
</template>

I had to replace the word type with something else to fix the TypeScript error:

Please write "{{ listName }}" to confirm.

Update

After further experimenting, what's causing the issue is the following pattern in HTML text:

type "

Where anything can be between the double quotes, so type "", type "hello", etc, all cause this error.

Conversely, when I put anything between the type and ", it builds again, eg type a ".

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