What is the correct syntax for importing JSNLog using ES6?

Question

I can't seem to figure out how to import JSNLog into my ES6 (babel) based Aurelia project. I've tried:

import 'jsnlog';            // JL is undefined
import JL from 'jsnlog';    // JL is {}
import {JL} from 'jsnlog';  // JL is undefined

If it matters I've learned that the jsnlog.js file is generated from typescript source.

You could try to compile jsnlog from typescript to ES6, then let babel do the rest. — Bergi, Feb 28 '16 at 15:20
I'd prefer to consume the JSNLog distribution directly (if possible), without needing a custom build step for a dependency. — David Lynch, Feb 28 '16 at 15:30
In that case the first one should work - the lib defines a global. What code does babel create for this, what module loader/bundler are you using, how do you inject the distributed library in your module repository? — Bergi, Feb 28 '16 at 15:31
The JL variable is undefined when I use #1. The jsnlog.js file is a "format cjs" style CommonJS module that was directly generated by TypeScript. — David Lynch, Feb 28 '16 at 16:03
How did you install `jsnlog`? What version? which version of Babel? For me, `import { JL } from 'jsnlog'` works as expected after `npm install jsnlog`. I am using `babel-cli@6.5.1` and I installed `jsnlog@2.17.0`. — joews, Feb 28 '16 at 16:38
This is client\browser code so I installed with `jspm install npm:jsnlog`. — David Lynch, Feb 28 '16 at 16:49

score 2 · Answer 1 · answered Mar 05 '16 at 02:03

2

I am the author of JSNLog.

Just added info to the jsnlog.com site about using ES6 import to import JSNLog into an ES6 NodeJs application: http://jsnlog.com/Documentation/HowTo/LoadingJsFile#es6 (using Babel as the transpiler).

This uses:

import {JL} from 'jsnlog';

answered Mar 05 '16 at 02:03

user1147862

My issue is using jsnlog in a client application. Tracking the issue here: https://github.com/mperdeck/jsnlog.js/issues/24 – David Lynch Mar 15 '16 at 14:28

score 2 · Accepted Answer · answered Mar 19 '16 at 16:18

2

The author has fixed this issue with the v2.17.1 release.

answered Mar 19 '16 at 16:18

David Lynch

score 1 · Answer 3 · answered Feb 29 '16 at 21:47

1

According to this line from the source code the following

import {JL} from 'jsnlog';

should work. At least, it works for me.

If it doesn't, check out your SystemJS setup. The issue will be somewhere there.

answered Feb 29 '16 at 21:47

just-boris

3 Answers3