import * as plugins from './typedrequest.plugins'; import { TypedResponseError } from './typedrequest.classes.typedresponseerror'; type THandlerFunction = ( requestArg: T['request'] ) => Promise; /** * typed handler for dealing with typed requests */ export class TypedHandler { public method: string; private handlerFunction: THandlerFunction; constructor(methodArg: T['method'], handlerFunctionArg: THandlerFunction) { this.method = methodArg; this.handlerFunction = handlerFunctionArg; } /** * adds a response to the typedRequest * @param typedRequestArg */ public async addResponse(typedRequestArg: T) { if (typedRequestArg.method !== this.method) { throw new Error( 'this handler has been given a wrong method to answer to. Please use a TypedRouter to filter requests' ); } let typedResponseError: TypedResponseError; const response = await this.handlerFunction(typedRequestArg.request).catch(e => { if (e instanceof TypedResponseError) { typedResponseError = e; } else { throw e; } }); if (typedResponseError) { typedRequestArg.error = { text: typedResponseError.errorText, data: typedResponseError.errorData }; } if (response) { typedRequestArg.response = response; } return typedRequestArg; } }