TypeError: Cannot set property 'tsLoaderFileVersion' of undefined

[quentincaffeino]

Compilation with TS enabled fails with this error:

 ERROR  Failed to compile with 1 errors

 error  in ./somefile.ts

Module build failed: TypeError: Cannot set property 'tsLoaderFileVersion' of undefined
    at successLoader (/var/www/html/node_modules/ts-loader/dist/index.js:49:54)
    at Object.loader (/var/www/html/node_modules/ts-loader/dist/index.js:21:12)

Found only one similar issue on github and it says that latest ts-loader doesn't support webpack <4.
So how about an upgrade then?

[quentincaffeino]

Ok, I found that you have an open PR.

[Lyrkan]

Hello @quentincaffeino,

There already is a PR related to the Webpack 4 update (#324), but since this version deprecates/introduces a lot of things it takes a bit of time to do it right.

In the meantime you should be able to use an old version of the ts-loader without any issue.

[quentincaffeino]

Thanks