Speculative fix for #568

[johnnyreilly]

No description provided.

[johnnyreilly]

@donaldpipowitch I've included the change we discussed about dropping this piece of code:

        // do any necessary config massaging		
        if (loaderOptions.transpileOnly) {		
            configFile.config.compilerOptions.isolatedModules = true;		
        }

This can still be set via tsconfig.json if desired. It just won't be set by default anymore (since it's not useful with fork-ts-checker-webpack-plugin in the mix anyway)

[donaldpipowitch]

Thank you for pinging 👍