What is the best way to abstract out common api types in typescript -

i have 10+ search requests common request fields may abstracted. example, 2 fields common across them similar following:

for common search

{    name: 'purple',   guid: '1672d0cf-08dc-4c04-9ce2-a2e6e85d1d13',   searchtype: 'common'   } 

for details on visit

{    name: 'purple',   guid: '1672d0cf-08dc-4c04-9ce2-a2e6e85d1d13',   visitid: 35 } 

it nice following in apisearch.ts

    import { search } './apimodels.ts'      export class commonsearch extends search {       public searchtype?: string;     }      export class visitrequestsearch extends search {       public visitid: number;     } 

apimodals.ts

    export class search {       public name?: string;       public guid?: string;     } 

i following error when try include base search

[at-loader] checking finished 1 errors [at-loader] src\app\apimodels.ts:12:44     ts2507: type 'any' not constructor function type. 

my fiddler seems think abstraction if reasonable : https://jsfiddle.net/michael_shomsky/0bppt8dg/2/

so why error. started looking @ of documentation again (https://www.typescriptlang.org/docs/handbook/advanced-types.html) appears should using kind of intersection, i'm looking have library of available search requests, not factory; possibly there pattern or messed somewhere.

after fooling around various ways of doing realize there mistake in how file imported. apparently ts2507: type 'any' not constructor function type. response missing super class (well, @ least in case).:

the following import got ".ts" removed , began working expected (similar jsfiddle)

import { search } './apimodels.ts';  

needed

import { search } './apimodels';