js-parser-combinators example 1

const { exhaustive, and, literal, param, optional } = require('js-parser-combinators') // A parser that can parse paths such as: // /user/1234 // /user/1234/details const parser = exhaustive( and( and( literal('/user/'), param('userid', /^\d+/, parseInt) ), optional(literal('/details')) ) ); parser({ input: '/user/1234/details' }).ast