Errors/warnings added by ts-loader do not respect webpack API

[lorenzodallavecchia]

I'm processing webpack errors/warnings in the compilation results.

Expected Behaviour

The errors and warnings reported by ts-loader through webpack should implement the WebpackError interface.
Starting from webpack 5 the interface is part of webpack's official typings.

Actual Behaviour

Instead of including the loc property with start/end positions of the error, the object added by ts-loader includes a location property with just the starting position. This is easily seen in the webpack stats object produced by the compilation.

stats.compilation.errors; // each error misses the 'loc' property
stats.compilation.warnings; // each warning misses the 'loc' property

Probably as a consequence of this, when I transform the stats into JSON, there is no location information for the errors.

const json = stats.toJson({ all: false, errors: true, warnings: true });
json.errors; // 'loc' missing in errors
json.warnings; // 'loc' missing in warnings

[stale]

This issue has been automatically marked as stale because it has not had recent activity. It will be closed if no further activity occurs. Thank you for your contributions.

[lorenzodallavecchia]

The problem is still present, no reason to close this.

[johnnyreilly]

Would you like to work on this?

[lorenzodallavecchia]

Yes, I would like to. I hope to find some time to do a PR in the coming days.

[johnnyreilly]

Thanks for contributing! Should be released in the next 20 mins https://github.com/TypeStrong/ts-loader/releases/tag/v8.0.17