How can moment.js be imported with typescript?

via typings

Moment.js now supports TypeScript in v2.14.1.

See: https://github.com/moment/moment/pull/3280

---

Directly

Might not be the best answer, but this is the brute force way, and it works for me.

1. Just download the actual moment.js file and include it in your project.
2. For example, my project looks like this:

$ tree . ├── main.js ├── main.js.map ├── main.ts └── moment.js

3. And here's a sample source code:

```

import * as moment from 'moment';

class HelloWorld {
    public hello(input:string):string {
        if (input === '') {
            return "Hello, World!";
        }
        else {
            return "Hello, " + input + "!";
        }
    }
}

let h = new HelloWorld();
console.log(moment().format('YYYY-MM-DD HH:mm:ss'));

4. Just use node to run main.js.

Update

Apparently, moment now provides its own type definitions (according to sivabudh at least from 2.14.1 upwards), thus you do not need typings or @types at all.

import * as moment from 'moment' should load the type definitions provided with the npm package.

That said however, as said in moment/pull/3319#issuecomment-263752265 the moment team seems to have some issues in maintaining those definitions (they are still searching someone who maintains them).

---

You need to install moment typings without the --ambient flag.

Then include it using import * as moment from 'moment'

You need to import moment() the function and Moment the class separately in TS.

I found a note in the typescript docs here.

/*~ Note that ES6 modules cannot directly export callable functions
*~ This file should be imported using the CommonJS-style:
*~ import x = require('someLibrary');

So the code to import moment js into typescript actually looks like this:

import { Moment } from 'moment'
....
let moment = require('moment');
...
interface SomeTime {
  aMoment: Moment,
}
...
fn() {
  ...
  someTime.aMoment = moment(...);
  ...
}

Not sure when this changed, but with the latest version of typescript, you just need to use import moment from 'moment'; and everything else should work as normal.

UPDATE:

Looks like moment recent fixed their import. As of at least 2.24.0 you'll want to use import * as moment from 'moment';