rkaw92/index.html

## index.html
<!DOCTYPE html>
<html>
    <head>
        <title>Library test</title>
    </head>
    <body>
        <p id="datetime"></p>
        <script src="dist/main.js"></script>
        <script>
            function displayTime() {
                document.getElementById('datetime').textContent = myMoment().format();
            }
            setInterval(displayTime, 1000);
            displayTime();
        </script>
    </body>
</html>

## webpack.config.js
module.exports = {
    mode: 'production',
    entry:  './node_modules/moment/moment.js',
    output: {
        libraryTarget: 'var',
        library: 'myMoment'
    }
};
	<!DOCTYPE html>
	<html>
	<head>
	<title>Library test</title>
	</head>
	<body>
	<p id="datetime"></p>
	<script src="dist/main.js"></script>
	<script>
	function displayTime() {
	document.getElementById('datetime').textContent = myMoment().format();
	}
	setInterval(displayTime, 1000);
	displayTime();
	</script>
	</body>
	</html>
	module.exports = {
	mode: 'production',
	entry: './node_modules/moment/moment.js',
	output: {
	libraryTarget: 'var',
	library: 'myMoment'
	}
	};