在Angular和nodeJS中使用常见的Javascript文件

Question

I have a javascript file named sum.js

var addNumber = function (a,b){
  return a + b;
}
exports.addNumber = addNumber;

I want to use same sum.js file's addNumber function in nodeJS and in Angular 5 . How can I do it. Is there any ways to do it?

Your help will be highly appreciated.

Answer 1

I am able to use it in NodeJS as

var sum = require('./sum.js');

But I was not able to use it in Angular , So I declared var require: any; on the top.

 declare var require: any;
 var sum = require('./sum.js');

I found this solution.

Answer 2

You can create an npm package and use it in both:

https://medium.freecodecamp.org/how-to-make-a-beautiful-tiny-npm-package-and-publish-it-2881d4307f78

Answer 3

You can give the reference of your js file in angular-cli.json like below

"scripts": [
    ....
    "./assets/js/sum.js"
],

and then in your .ts of angular you can directly use it by declaring it like

import * as sum from '../../........./sum.js' //ref of ur file

class xyz {
   let a = 0,b=1
   constructor() { sum.addNumber(a, b); }
}