convert uri-template replace :varname with {+varname} to make it RFC 6570 compatible
npm install router-uri-convertws-rest
``
yarn add router-uri-convert
`ts/users/:user
let source = ;
let actual = routerToRfc6570(source);
let expected = /users/{+user};
expect(actual).to.be.deep.equal(expected);
expect(rfc6570ToRouter(actual)).to.be.deep.equal(source);
``