feat(OpenAPI 3.1.0): add spec generator

Author: jefflembeck

packages/cli/src/swagger/specGenerator.ts

@@ -103,7 +103,9 @@ export abstract class SpecGenerator {
 
   protected abstract getSwaggerTypeForIntersectionType(type: Tsoa.IntersectionType, title?: string): Swagger.BaseSchema;
 
-  protected abstract buildProperties(properties: Tsoa.Property[]): { [propertyName: string]: Swagger.Schema2 } | { [propertyName: string]: Swagger.Schema3 };
+  protected abstract buildProperties(
+    properties: Tsoa.Property[],
+  ): { [propertyName: string]: Swagger.Schema2 } | { [propertyName: string]: Swagger.Schema3 } | { [propertyName: string]: Swagger.Schema31 };
 
   public getSwaggerTypeForObjectLiteral(objectLiteral: Tsoa.NestedObjectLiteralType, title?: string): Swagger.BaseSchema {
     const properties = this.buildProperties(objectLiteral.properties);