Using Angular 2 (Typescript) to export variables from a separate file

Within my Node.js application, I have a file named variables.js. This file contains variables that are used throughout the application in one central location:

exports.var1= 'a';
exports.var2= 'b';

By requiring this file in another page using the following code:

var variables= require('./variables');

I am able to access these variables in that page like so:

alert(variables.var1);

I am now looking to achieve the same functionality in Angular 2 (TypeScript). I have attempted to work with exports and imports but have been unable to successfully implement it. How can I achieve this in Angular 2 using TypeScript?

javascripttypescriptangular

Answer №1

variables.ts

export var firstVariable:string = 'a';
export var secondVariable:string = 'b';

other-file.ts

import {firstVariable, secondVariable} from './variables';

alert(firstVariable);

or

import * as vars from './variables';

alert(vars.firstVariable);

Refer to the concept of a **Barrel** at https://angular.io/guide/glossary#barrel

Answer №2

I've been experimenting with exports and imports, but I'm having trouble making it work in an angular2 project using typescript. Can someone help me figure this out?

To handle exports and imports in Angular2 with TypeScript, simply utilize the export and import keywords. These are part of ES6 and seamlessly integrate with TypeScript. 🌹

Export:

export const variable = 'a'

Import:

import {variable} from './variables';

Additional Information

If you want to learn more about TypeScript modules, check out: https://basarat.gitbooks.io/typescript/content/docs/project/modules.html

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