What is the method for importing a JavaScript file into my TypeScript file?

Recently, I've encountered an issue while working with Typescript and angular 2. I have built an EncryptionService that looks like this:

import {Injectable} from 'angular2/core';
  import './lib/hmac256-enc64';

  @Injectable()
  export class EncryptionService {
    constructor() {
    }
    hmacSha256(message: string, secret: string) {
      return CryptoJS.HmacSHA256(message, secret).toString(CryptoJS.enc.Base64);
    }
  }

But when I try to include './lib/hmac256-enc64'; (CryptoJS) as a dependency, I encounter a runtime error message that says:

detected as register but didn't execute.

I am puzzled about how to properly include a JS file as a dependency in my EncryptionService. Any suggestions or solutions would be appreciated!

Answer №1

To obtain the CryptoJS type definitions, you must employ typings:

$ typings install cryptojs --ambient --save

Next, include a reference to the type definitions and import CryptoJS :

/// <reference path="./typings/main.d.ts" />

import * as CryptoJS from "cryptojs"

If the import feature is not functioning properly, resort to the older external modules:

import CryptoJS = require('cryptojs');

You can then utilize CryptoJS.HmacSHA256

It should be noted that I have never utilized CryptoJS in conjunction with TypeScript, so I cannot guarantee this method will work flawlessly...

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