typescript - Angular - How to use arrow functions with arguments? -


i have angular 4 app, , i'm trying write queue of actions. each action fired after previous function finished , parameters.

public activeregistrationandsync() {      let actionstoperformbyorder = [         () => this.registrationcomponent.activeformvalidators.apply(null, arguments),         () => this.registrationcomponent.register.apply(null, arguments),         () => this.autologin.apply(null, arguments),         () => this.postlogin.apply(null, arguments),         () => this.checkout.apply(null, arguments)      ];        let defer = new deferred<void>();      let curpromise = defer.promise;        //build chain of acitons      actionstoperformbyorder.foreach(action => {        curpromise = curpromise          .then(action)          .catch(err => this.error.emit(err));      })        //active actions      defer.resolve();   }         export class deferred<t> {    promise: promise<t>;    resolve: (value?: t | promiselike<t>) => void;    reject:  (reason?: any) => void;      constructor() {      this.promise = new promise<t>((resolve, reject) => {        this.resolve = resolve;        this.reject  = reject;      });    }  }

my problem arrow functions doesn't support arguments , using function() {} instead change reference.

i suggest use async/await combine , run actions. it's easy read, here basic idea, modify specific case:

async function activeregistrationasync() {   const actionstoperformbyorder = [     async (r) => {       return promise.resolve(3)     },     async (r) => {       return promise.resolve(r + 5)     }   ];    let result;   (let action of actionstoperformbyorder) {     result = await action(result);   }   return result; }  activeregistrationasync().then((r) => {   console.log(r); });

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