Function newErrorWithDOMErrorAndProps

test/specs/singleton.spec.js:206–213

(domError)

      function someMethod () { return this.code; }

      function newErrorWithDOMErrorAndProps (domError) {
        return ono(domError, {
          code: 404,
          text: "Not Found",
          timestamp: now,
          someMethod
        });
      }

      let err = newErrorWithDOMErrorAndProps(makeDOMError());