QueryFilterFunction receives undefined for search

[byronferguson]

When declaring the filter option inside of the @Crud() decorator for a controller it is only working when provided as a static object. When I use the documented QueryFilterFunction, as described [in the docs (https://github.com/nestjsx/crud/wiki/Controllers#filter), the first parameter is receiving undefined and all filters are ignored.

I need to extend any incoming filters with some persisted filters based on the current date for the records. Using new Date() in the static object generates a matching static date-value and therefore breaks my intent. The solution makes sense to use a factory function to merge the search options, but so long as the incoming SCondition is empty that is impossible.

I'm using the latest releases for the following libraries.

"@nestjs/typeorm": "~7.1.0",
"@nestjsx/crud": "~4.6.2",
"@nestjsx/crud-typeorm": "~4.6.2",
"typeorm": "~0.2.25"