6.0.0 regression: GenerateMetadataError: Unknown type: NeverKeyword about tsoa

[WoH]

This was a bug in the old implementation, but we should support this.

[hpx7]

@WoH I'm happy to try and contribute support for this, would you be able to provide any guidance for how this should be done?

[WoH]

This should result in:

{
  "type": "object",
  "properties": {
  },
  "additionalProperties": false
}

Right?

[hpx7]

This is what it generates on 5.1.1:

	"Record_string.never_": {
		"properties": {},
		"type": "object",
		"description": "Construct a type with a set of properties K of type T"
	},

[WoH]

Since we are now trying to descend into the indexed type in a Mapped Type, we need to probably try to check if the indexType is the never type and handle that separately:
https://github.com/lukeautry/tsoa/blob/master/packages/cli/src/metadataGeneration/typeResolver.ts#L242

[hpx7]

Thanks for the tip, I created #1537

[WoH]

Resolved in v6.0.1