spec.yml

status: response.status
headers: response.headers
body: response.body

response:
    
    resolver: conditional   
    when:
        - matches: request.url.pathname
          pattern: '^/?$'
          use: helloWorld
        - matches: request.url.pathname
          pattern: '^/hello-world/?$'
          use: helloWorld
    default : notFound      
helloWorld:
    inline:
        status:
            resolver: inline
            inline: 200
        headers:
            resolver: inline
            inline:
                content-type:
                    resolver: inline
                    inline: 'text/html'
        body:
            resolver: template
            engine: mustache
            template: './templates/hello-world.mst'
            provide:
                title:
                    resolver: inline
                    inline: 'this is page title!'


notFound:
    inline:
        status:
          resolver: inline
          inline: 404
        headers:
            resolver: inline
            inline:
                content-type:
                    resolver: inline
                    inline: 'text/string'
        body:
                       resolver: inline
                       inline: 'Page not found!'