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export const METHOD_NAME_ALL = 'ALL' as constexport const METHOD_NAME_ALL_LOWERCASE = 'all' as constexport const METHODS = ['get', 'post', 'put', 'delete', 'options', 'patch'] as constexport const MESSAGE_MATCHER_IS_ALREADY_BUILT =  'Can not add a route since the matcher is already built.'
export interface Router<T> {  name: string  add(method: string, path: string, handler: T): void  match(method: string, path: string): Result<T>}
export type ParamIndexMap = Record<string, number>export type ParamStash = string[]export type Params = Record<string, string>export type Result<T> = [[T, ParamIndexMap][], ParamStash] | [[T, Params][]]/*The router returns the result of `match` in either format.
[[handler, paramIndexMap][], paramArray]e.g.[  [    [middlewareA, {}],                     // '*'    [funcA,       {'id': 0}],              // '/user/:id/*'    [funcB,       {'id': 0, 'action': 1}], // '/user/:id/:action'  ],  ['123', 'abc']]
[[handler, params][]]e.g.[  [    [middlewareA, {}],                             // '*'    [funcA,       {'id': '123'}],                  // '/user/:id/*'    [funcB,       {'id': '123', 'action': 'abc'}], // '/user/:id/:action'  ]]*/
export class UnsupportedPathError extends Error {}