#25157 Repro - File 2

route.ts

import { PathPart, Route } from './interfaces/types';

export function isParam(i: any): i is PathParam<any> {
  return i.param != null;
}

export function param<T extends string>(t: T): PathParam<T> {
  return { param: t };
}

export interface RouteCreator {
  <K extends PathPart<any>>(ks: [K]): Route<K>;
  <K extends PathPart<any>, K1 extends PathPart<string>>(ks: [K, K1]): Route<K | K1>;
  <K extends PathPart<any>, K1 extends PathPart<any>, K2 extends PathPart<any>>(
    ks: [K, K1, K2]
  ): Route<K | K1 | K2>;
  <
    K extends PathPart<any>,
    K1 extends PathPart<any>,
    K2 extends PathPart<any>,
    K3 extends PathPart<any>
  >(
    ks: [K, K1, K2, K3]
  ): Route<K | K1 | K2 | K3>;
  <
    K extends PathPart<any>,
    K1 extends PathPart<any>,
    K2 extends PathPart<any>,
    K3 extends PathPart<any>,
    K4 extends PathPart<any>
  >(
    ks: [K, K1, K2, K3, K4]
  ): Route<K | K1 | K2 | K3 | K4>;
  <
    K extends PathPart<any>,
    K1 extends PathPart<any>,
    K2 extends PathPart<any>,
    K3 extends PathPart<any>,
    K4 extends PathPart<any>,
    K5 extends PathPart<any>
  >(
    ks: [K, K1, K2, K3, K4, K5]
  ): Route<K | K1 | K2 | K3 | K4 | K5>;
  <
    K extends PathPart<any>,
    K1 extends PathPart<any>,
    K2 extends PathPart<any>,
    K3 extends PathPart<any>,
    K4 extends PathPart<any>,
    K5 extends PathPart<any>,
    K6 extends PathPart<any>
  >(
    ks: [K, K1, K2, K3, K4, K5, K6]
  ): Route<K | K1 | K2 | K3 | K4 | K5 | K6>;
  <
    K extends PathPart<any>,
    K1 extends PathPart<any>,
    K2 extends PathPart<any>,
    K3 extends PathPart<any>,
    K4 extends PathPart<any>,
    K5 extends PathPart<any>,
    K6 extends PathPart<any>,
    K7 extends PathPart<any>
  >(
    ks: [K, K1, K2, K3, K4, K5, K6, K7]
  ): Route<K | K1 | K2 | K3 | K4 | K5 | K6 | K7>;
  <
    K extends PathPart<any>,
    K1 extends PathPart<any>,
    K2 extends PathPart<any>,
    K3 extends PathPart<any>,
    K4 extends PathPart<any>,
    K5 extends PathPart<any>,
    K6 extends PathPart<any>,
    K7 extends PathPart<any>
  >(
    ks: [K, K1, K2, K3, K4, K5, K6, K7]
  ): Route<K | K1 | K2 | K3 | K4 | K5 | K6 | K7>;
  <
    K extends PathPart<any>,
    K1 extends PathPart<any>,
    K2 extends PathPart<any>,
    K3 extends PathPart<any>,
    K4 extends PathPart<any>,
    K5 extends PathPart<any>,
    K6 extends PathPart<any>,
    K7 extends PathPart<any>,
    K8 extends PathPart<any>
  >(
    ks: [K, K1, K2, K3, K4, K5, K6, K7, K8]
  ): Route<K | K1 | K2 | K3 | K4 | K5 | K6 | K7 | K8>;
  <
    K extends PathPart<any>,
    K1 extends PathPart<any>,
    K2 extends PathPart<any>,
    K3 extends PathPart<any>,
    K4 extends PathPart<any>,
    K5 extends PathPart<any>,
    K6 extends PathPart<any>,
    K7 extends PathPart<any>,
    K8 extends PathPart<any>,
    K9 extends PathPart<any>
  >(
    ks: [K, K1, K2, K3, K4, K5, K6, K7, K8, K9]
  ): Route<K | K1 | K2 | K3 | K4 | K5 | K6 | K7 | K8 | K9>;
}

export const route: RouteCreator = (pathParts: Array<PathPart<any>>) => {
  return {
    template: () => {
      return (
        '/' + pathParts.map(part => (isParam(part) ? `:${part.param}` : part)).join('/')
      );
    },
    create: (params: any) => {
      return (
        '/' +
        pathParts
          .map(part => {
            if (isParam(part)) {
              const { param } = part;
              return params[param];
            }
            return part;
          })
          .join('/')
      );
    },
  };
};