No error is thrown when file is not generated due to minRatio check

[chestozo]

Currently if the ratio of generated file size compared to original file size is greater than options.minRatio - compressed file is not being generated and no error is thrown.

Here is the check

if (result.length / originalSize > minRatio) {
  return cb();
}

https://github.com/webpack-contrib/compression-webpack-plugin/blob/master/src/index.js#L138

Expected Behavior / Situation

Error is thrown.

Actual Behavior / Situation

webpack build finishes without any trace of file not being generated (no error, no message).

Modification Proposal

Default behavior:
throw error File not generated due to file size being too big.

Add option to support current behavior. Not sure about the name for example option.dropBigFiles.

[alexander-akait]

It is expected behavior and no errors should be generated. You can use minRatio to compress all assets. Also you can use test/include/exclude option to filter files.