Rollup via CLI: Treating as external dependency

Question

I'm trying to bundle everything into one single file with rollupjs.

main.js file:

import * as ex from 'example-export';

ex.alertMe();

example-export.js file:

export function alertMe() {
    alert('alert!');
};

The command below and it's response:

karl@karl-ux303ln:~/dev/sketch/experiment/socketio$ rollup ./public/js/main.js --output ./public/js/bundle.js --format iife --sourcemap inline
Treating 'example-export' as external dependency
No name was provided for external module 'example-export' in options.globals – guessing 'ex'

The bundle.js file produced:

(function (ex) {
'use strict';

ex.alertMe();

}(ex));
//# sourceMappingURL=data:application/json;charset=utf-8;base64,eyJ2ZXJzaW9uIjozLCJmaWxlIjoiYnVuZGxlLmpzIiwic291cmNlcyI6WyJtYWluLmpzIl0sInNvdXJjZXNDb250ZW50IjpbImltcG9ydCAqIGFzIGV4IGZyb20gJ2V4YW1wbGUtZXhwb3J0JztcblxuZXguYWxlcnRNZSgpOyJdLCJuYW1lcyI6W10sIm1hcHBpbmdzIjoiOzs7QUFFQSxFQUFFLENBQUMsT0FBTyxFQUFFLDs7In0=

I was expecting the example-export module to be included in the bundle.js file. Since this is really new stuff the internet lacks proper examples of this.

I expect the issue has something to do with the --name argument https://github.com/rollup/rollup/wiki/Command-Line-Interface#usage. I cannot however figure out how it's supposed to be used. And let's say if I have multiple exports and imports, how will that look?

basickarl · Accepted Answer · 2016-10-17 07:51:41Z

4

Relative path

If the file is in the same directory:

import * as ex from './example-export';

Via NODE_PATH

If the NODE_PATH env variable is set, then you may add a path from that.

If the NODE_PATH is equal to /home/karl/myprojects/mynodeproject/
The library your trying to access is located at /home/karl/myprojects/mynodeproject/src/lib/my_library.js
And the file you are writing which is currently trying to import my_library is at /home/karl/myprojects/mynodeproject/src/index.js

Then you can use the following in index.js:

import * as ex from 'src/lib/example-export';

edited Oct 17, 2016 at 7:51

answered Aug 25, 2016 at 19:44

basickarl

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Michele Ricciardi · Accepted Answer · 2016-08-25 19:45:28Z

2

I have tried the example through the Rollup playground page, only thing I needed to change to get it working was change the

import * as ex from 'example-export';

to

import * as ex from './example-export';

Take a look here

answered Aug 25, 2016 at 19:45

Michele Ricciardi

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Rollup via CLI: Treating as external dependency

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Relative path

Via NODE_PATH

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