Executing a series of imported functions from a TypeScript module

I'm developing a program that requires importing multiple functions from a separate file and executing them all to add their return values to an expected output or data transformation. It's part of a larger project where I need these functions to seamlessly integrate without modifying the core library code.

For instance:

export function func1() : any {
    return {test1: "test1"}
}

export function func2() : any {
    return {test2: "test2"}
}

export function func3() : any {
    return {test3: "test3"}
}

Relevant Functions in Separate File

import * as val_funcs from "path/to/val_func/file"

function get_val_list() : any {
// Need to iterate through each function in val_funcs
// Executing each one, collecting the value, then returning it 
}

I'm uncertain about how to achieve this task or what specific keywords to search for answers. Despite trying different search queries like "how to run each function in a list in TypeScript", I haven't found a useful solution yet.

Answer №1

If you are looking for a solution, try implementing an approach similar to the following:


Object.values(val_funcs).forEach(function() {
  fn();
});

The Object.values function will list out all the values within the object. In case your file contains non-function elements, you can verify its type using the following code snippet:

.forEach(function(fn) {
  if(typeof fn === "function") 
    fn();
})

In situations where you need the values returned from the function, consider utilizing Array.map instead of forEach:


const values = Object.values(val_funcs)
                    .filter(function(fn) {
                      return typeof fn === "function";
                    })
                    .map(function(fn) {
                      return fn();
                    });

Similar questions

If you have not found the answer to your question or you are interested in this topic, then look at other similar questions below or use the search

Converting HTML templates into AMD modules using grunt-ts

When using the grunt-ts plugin and specifying the html: ["*.tpl.html"] option, it converts *.tpl.html files into *.tpl.html.js files at the end of the process, creating a global var. Is there a way to configure grunt-ts to output the final .js file in a d ...

Nestjs: Can't find property in Mongoose document

I am currently encountering some issues with the following code while using Nestjs along with Mongoose: import { Injectable } from '@nestjs/common'; import { Key, KeyDocument } from '@app/mongo'; import { Model } from 'mongoose&apo ...

Retrieving data from notifications without having to interact with them (using Firebase Cloud Messaging and React Native)

Currently, I am able to handle messages whether the app is open, minimized, or closed. However, how can I process a message if a user logs into the application without receiving a notification? useEffect(() => { messaging().setBackgroundMessageHa ...

Event emitters from Angular 4 are failing to receive emitted events after the page is refreshed

Hey there, I'm facing an unusual issue with event emitters not functioning correctly during page refreshes. Here's the scenario: First, the user lands on the login page. Upon successful login, they are directed to the home page where I need spec ...

Is Typescript capable of identifying void functions automatically?

Being new to Typescript and programming in general. Instead of using: function greet(greeting: string): void; Can I simplify it like this? Is there any type inference? function greet(greeting: string); ...

Is it correct to implement an interface with a constructor in TypeScript using this method?

I am completely new to TypeScript (and JavaScript for the most part). I recently came across the article discussing the differences between the static and instance sides of classes in the TypeScript handbook. It suggested separating the constructor into an ...

The concept of a singleton design pattern is like a hidden treasure waiting to be

My approach to implementing the singleton pattern in a typescript ( version 2.1.6 ) class is as follows: export class NotificationsViewModel { private _myService: NotificationService; private _myArray: []; private static _instance: Notificatio ...

Issue encountered: Nuxt 3 fails to locate the useRoute import

Recently, I updated to the latest version of Nuxt and encountered an issue with the useRoute method. Even though it works, I keep getting a "Cannot Find name useRoute" error message. Can anyone help me figure out what might be missing? <script lang=&quo ...

What is the best way to iterate through an array and dynamically output the values?

I am facing an issue with a function that retrieves values from an array, and I wish to dynamically return these values. const AvailableUserRoles = [ { label: 'Administrator', value: 1 }, { label: 'Count', value: ...

Tips for fixing the TS2345 compilation error when working with React

Attempting to implement the setState method in React has resulted in a compile error. Any solutions to this issue would be greatly appreciated. Frontend: react/typescript articleApi.tsx import axios from 'axios'; import {Article} from '../ ...

Exploring Angular: Embracing the Power of Query String Parameters

I've been struggling with subscribing to query string parameters in Angular 2+. Despite looking at various examples, I can't seem to make it work. For instance, on this Stack Overflow thread, the question is about obtaining query parameters from ...

How can I configure nest.js to route all requests to index.html in an Angular application?

I am developing an Angular and NestJS application, and my goal is to serve the index.html file for all routes. Main.ts File: async function bootstrap() { const app = await NestFactory.create(AppModule); app.useStaticAssets(join(__dirname, '..&ap ...

Exploring the JSON Array in Angular5 with the power of ngFor

Currently, I am working on a project using Angular5 and encountering an issue with the *ngFor directive. The model class I have defined looks like this: export class FetchApi { value: Array<String>; api_status: string; api_version: string; d ...

Using import statement is mandatory when loading ES Module in TS Node: server/src/index.ts

Attempting to kickstart a TypeScript Node project, I've gone ahead and added some essential dependencies (TypeScript, ESLint, Mongoose, and GraphQL). However, upon executing the command: ts-node-dev --respawn --transpile-only src/index.ts An error me ...

What is the process for defining a default value for a template-driven form input in Angular 2?

I have a simple input element in my form that requires a default initial value to be set. <input type="number" name="interest_rate" [(ngModel)]="interest_rate"> In my code, I included this.form.controls['interest_rate'].patchValue(this.a ...

Is it possible for Angular templates to be dynamic?

In my component, I have a variable named "myVar" that determines which ng-template should be displayed. Let's consider the following example of a component template: <div *ngIf="myVar; then myVar; else nothing"></div> <ng-template #foo ...

The Angular-slickgrid is encountering an issue where it is unable to access the property "hostView" as it

Hey there developers, I've been experimenting with the angular slickgrid library and attempting to incorporate the rowDetailView feature it offers. The issue I'm facing is that while I can expand the view by clicking on it, I'm unable to c ...

Issues arise in Typescript single-page applications due to the use of application insights

Currently, I am developing a single-page HTML application using TypeScript in VSCode. Initially, the app was running smoothly without any errors or warnings. However, I decided to incorporate Azure Application Insight into the project. To integrate it, I ...

Interface in React Typescript does not include the specified property

Just starting out with React after some previous experience with Angular. I've been trying to create a component that accepts a data model or object as a parameter. Here's what I have: import react from 'react' interface SmbListItem{ ...

Is it advisable to prevent Set and Map from having unspecified generics in TypeScript?

Upon reviewing some old code that I wrote, I realized that I had neglected to specify a generic type for a Set. The type was set as Set<unknown>. Strangely, despite this, I found that I could still utilize all the methods of the Set without encounter ...