Unable to get basic timeline to work with unpkg libr... | marmelab/EventDrops

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What you were expecting:
I tried to make a very simple timeline without a module bundler by following the instructions in the "Usage" section.

What happened instead:
I get the following console errors:

"ReferenceError: global is not defined
n              https://unpkg.com/event-drops:1
_initialize https://unpkg.com/event-drops:1
t               https://unpkg.com/event-drops:1
call           https://unpkg.com/d3:2"

"Source map error: Error: request failed with status 404
Resource URL: https://unpkg.com/event-drops
Source Map URL: index.js.map"

Steps to reproduce:

Put the code in the "Related code" section below in a file called "index.html" and open it in a Firefox or Chrome browser.

Related code:

<!DOCTYPE html>
<html>
    <head>
        <meta charset="utf-8">
        <title>Event Drops Demo</title>
        <link href="https://fonts.googleapis.com/css?family=Josefin+Sans:300" rel="stylesheet">
        <link href="https://fonts.googleapis.com/css?family=Muli" rel="stylesheet">
        <link href="https://unpkg.com/event-drops/dist/style.css" rel="stylesheet" />
    </head>

    <body>
        <h1>Event Drops Demo</h1>
        <div id="eventdrops-demo" style="width: 90%;"></div>
        <footer>
            <p>
                Released under MIT license, courtesy of <a href="http://marmelab.com/">marmelab</a>
                and <a href="https://github.com/canalplus">Canal Plus</a>. More details on our
                <a href="https://github.com/marmelab/EventDrops">GitHub repository</a>.
            </p>
        </footer>

        <script src="https://unpkg.com/d3"></script>
        <script src="https://unpkg.com/event-drops"></script>
        <script id='code'>

            const chart = eventDrops({});

            const repositoriesData = [
            {
                name: 'admin-on-rest',
                data: [{ date: new Date('2014/09/15 14:21:31') } /* ... */],
            },
            {
                name: 'event-drops',
                data: [{ date: new Date('2014/09/15 13:24:57') } /* ... */],
            },
            {
                name: 'sedy',
                data: [{ date: new Date('2014/09/15 13:25:12') } /* ... */],
            },
            ];

            d3
            .select('#eventdrops-demo')
            .data([repositoriesData])
            .call(chart);
        </script>
    </body>
</html>

Start with the Usage example and the related index.html, then reproduce the unpkg loading errors in Firefox or Chrome. Inspect how the published event-drops and d3 scripts load in a browser without a bundler; done means the basic timeline renders without the global ReferenceError or the reported source map error.

Written by the indexing model from the issue text.

Unable to get basic timeline to work with unpkg libraries

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