export function regexpToPath(thing: any) {
    if (typeof thing === 'string') {
        return thing.split('/')
    } else if (thing.fast_slash) {
        return ''
    } else {
        var match = thing.toString()
            .replace('\\/?', '')
            .replace('(?=\\/|$)', '$')
            .match(/^\/\^((?:\\[.*+?^${}()|[\]\\\/]|[^.*+?^${}()|[\]\\\/])*)\$\//)
        return match
            ? match[1].replace(/\\(.)/g, '$1')
            : '<complex:' + thing.toString() + '>'
    }
}