Failed to load API definition when using "meta({swaggerHidden: true})"

[oren-z]

Issue

Environment

npx envinfo --npmPackages '*hapi*' --binaries

Binaries:
Node: 14.15.4
Yarn: 1.22.5
npm: 7.5.4
npmPackages:
hapi-auth-jwt2: ^10.2.0 => 10.2.0
hapi-swagger: ^14.1.0 => 14.1.0

Steps to Reproduce

Use .meta({ swaggerHidden: true }) as a chained command in the Joi validation

'x-something': Joi.string().meta({ swaggerHidden: true }),

Expected Behavior

A working swagger page without the specific Joi property using the swaggerHidden value as specified in the document.

Actual Behavior

Failed to load API definition.

Reproducible Demo

Latest library.

NOTE

A simple fix for this is to add the following line :
if (schemaObj.properties[key]=== undefined ) return ;
here

[AndriiNyzhnyk]

I will check it.