Raise an error when config file is specified but not found

[Y--]

Hi!

A small contribution to explicitly raise an error if user specify a configuration file that cannot be resolved/found.

Please let me know:

• if it makes sense :-)
• if it is the right approach (I've tried to use the formatErrors utils but didn't seem to work in this case)
• how I can test it (not sure where to put the test)

Thanks!!

[johnnyreilly]

Thanks for contributing! Is the logic for your check definitely correct?

if (loaderOptions.configFile !== undefined) { // should this be === undefined?
  configFileError = new Error(`Cannot find '${loaderOptions.configFile }' in folder '${path.dirname(loader.resourcePath)}'`);
}

[Y--]

Thanks for contributing! Is the logic for your check definitely correct?

if (loaderOptions.configFile !== undefined) { // should this be === undefined?
  configFileError = new Error(`Cannot find '${loaderOptions.configFile }' in folder '${path.dirname(loader.resourcePath)}'`);
}

Well I want to throw an error if there is a file specified by the user (i.e. not undefined) but it is not found.

Basically I spent quite some time understanding why my config changes were not taken into account until I realized the file referenced in the loader did not exist, and the loader was instead creating a default configuration :-)